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DCA - LHR

$357 Find cheap flights from Reagan Washington National Airport to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Heathrow departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 7/10
Wed 7/17

Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to London.
In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

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Cheap flight deals from Reagan-National to Heathrow (DCA-LHR)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:05 am - 7:10 amDCA-LHR
15h 05m1 stop
11:10 am - 9:45 pmLHR-DCA
15h 35m2 stops
Wed, Nov 6 - Wed, Nov 13
11:00 am - 6:30 amDCA-LHR
14h 30m1 stop
7:40 am - 6:03 pmLHR-DCA
15h 23m2 stops
Sun, Oct 13 - Thu, Nov 7
4:55 pm - 10:00 amDCA-LHR
12h 05m1 stop
2:30 pm - 9:45 pmLHR-DCA
11h 15m1 stop
$547Air Canada
Find Deal
Wed, Sep 25 - Wed, Oct 30
4:55 pm - 10:00 amDCA-LHR
12h 05m1 stop
9:30 am - 7:55 pmLHR-DCA
15h 25m2 stops
$555Air Canada
Find Deal
Wed, Sep 25 - Wed, Oct 2
7:45 pm - 10:30 amDCA-LHR
9h 45m1 stop
7:35 pm - 7:15 pmLHR-DCA
28h 40m2 stops
$580British Airways
Find Deal
Wed, Oct 2 - Mon, Oct 7
11:48 am - 6:30 amDCA-LHR
14h 42m1 stop
5:05 pm - 11:32 pmLHR-DCA
11h 27m1 stop
$582British Airways
Find Deal
Wed, Oct 30 - Tue, Nov 5
5:06 pm - 9:25 amDCA-LHR
11h 19m1 stop
6:15 am - 4:59 pmLHR-DCA
15h 44m2 stops
$606Delta
Find Deal
Wed, Aug 7 - Thu, Aug 22
6:08 am - 8:10 pmDCA-LHR
9h 02m1 stop
9:40 am - 4:17 pmLHR-DCA
11h 37m1 stop
$608Delta
Find Deal
Mon, Aug 12 - Tue, Aug 27
5:59 am - 10:10 pmDCA-LHR
11h 11m1 stop
12:15 pm - 6:59 pmLHR-DCA
11h 44m1 stop
$633American Airlines
Find Deal
Sat, Sep 21 - Fri, Sep 27
6:00 am - 10:10 pmDCA-LHR
11h 10m1 stop
3:15 pm - 11:01 pmLHR-DCA
12h 46m1 stop
$713American Airlines
Find Deal
Fri, Aug 16 - Sun, Aug 25

Flights from Reagan-National to Heathrow - Travel Insights & Trends

Get data-powered insights and trends into flights from Reagan-National to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Reagan Washington National Airport to London Heathrow Airport?

The average price of all flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to London Heathrow Airport on a Tuesday and more expensive on a Monday. On your return trip to Reagan Washington National Airport, you should consider flying back on a Sunday, and avoid Mondays for better deals.

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport is November, where tickets cost $652 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,093 and $944 respectively.

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 27 days before departure.

Which airlines provide the cheapest flights from Reagan Washington National Airport to London Heathrow Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Reagan Washington National Airport to London Heathrow Airport found on KAYAK was with JetBlue for $357. Air Canada proposed a round-trip connection from $547 and United Airlines from $549.

Good to know

Low season

May

High season

June

Cheapest flight

$357
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 36% increase in price.
Flight from Reagan Washington National Airport to London Heathrow Airport

When to book flights from Reagan-National to Heathrow

Are your dates flexible? Find out the best times to travel from Reagan-National to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Reagan Washington National Airport to London Heathrow Airport flights

  • What is the cheapest flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport was $357 for a one-way ticket and $535 for a round-trip.

  • Do I need a passport to fly between Reagan Washington National Airport and London Heathrow Airport?

    Yes, you’ll need a passport to travel to London Heathrow Airport from Reagan Washington National Airport.

  • Which airports will I be using when flying from Reagan Washington National Airport to London Heathrow Airport?

    On your way to London Heathrow Airport, you’ll fly out from Washington, D.C. Reagan-National. You’ll be landing at London Heathrow.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Reagan Washington National Airport to London Heathrow Airport?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Reagan Washington National Airport and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to London, Delta or Finnair?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to London are Delta and Finnair. With an average price for the route of $785 and an overall rating of 8.0, Delta is the most popular choice. Finnair is also a great choice for the route, with an average price of $812 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Reagan Washington National Airport to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Reagan Washington National Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Reagan Washington National Airport to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Reagan Washington National Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Reagan-National to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Reagan-National to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10295 reviews
8.2Boarding
7.4Food
8.0Entertainment
7.9Comfort
8.6Crew
Airline reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

2.0 MediocreCraig, Jun 2024CVG - LGA
Read more about Delta reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

I flew Delta last week and United Airlines is a poor substitute mechanical problems with the plane and shitty food among other things made my travel experience what’s become to be expected from United no way is it ever worth the money they make us pay

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Food was terrible Not many options Stewards dont care Delay

The ride was good but no food ot entertainment hence, it was just over an hour flight.

they made me check my carryon. There was space in the overhead bins.

The Polaris experience is top notch. From departure lounge to arrival lounge. Everything was top notch. One of the best first class experience

The plane was delayed 2 hours. The wifi did not work. The seat in first class was not comfortable because the bottom felt like it lost all of its padding. And I did not like when the flight attendant made me wait at my seat to use the bathroom and didn't tell me why. If there were too many people using the 1st Class bathroom, she should have told me to go in the back, coach bathrooms. I guess I have to feel fortunate that they found 2 local pilots to still fly the plane tonight after the original pilots ended up at an airport 60 miles away due to high winds.

EWR terminal C United Club is great. Flight and everything else mediocre

This is by far the worst experience I have had with American Airlines. The start of this trip was a complete disaster. I purposely planned my trip so that I would weather any delays so that I could make very important meeting at the Pentagon. My flight was cancelled because of maintenance and I was put on the first flight the next day but I was late to the meeting. After a long week at the Pentagon I just wanted to go home and my flight home which was early in the day was delayed. Eventually the flight was delayed until the next day. I was not authorized a hotel room because DCA was my point of origin. So I paid for a hotel out of pocket. The flight this morning was boarded then deplaned because the aircraft was hot. The flow of information was not happening in DCA and made it worse when the news was bad. I am going to take a break from American for my next few military flights. Hopefully whatever has been going on with American Airlines will be resolved.

Information when booking said the flight would be with American Airlines but the flight was actualy with British Airways. Check in from Orlando was nice and quick. I agreed to put my cabin case in the checked luggage as it was a full flight. Case came back damaged (unable to put the handle down) so will have to dispose of it. Seats were quite cramped with very little leg room, even for economy. This was the experience of both the outgoing and return flight. Cabin crew were ok and flight time was punctual.

Missed this flight due to the first AA flight delay

Missed connection from Philadelphia to London because flight from DC was seriously delayed. Was re-routed the next day (had to pay for hotel) to Zurich and was given a main cabin middle seat while I had paid for premium. Great job AA!!!

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

very very tight seats unfriendly crew who do not seem to care about the comfort of their passengers and do not know how to smile poor ground staff support at LHR and PHX

AA1537 the AC was not working properly. It was very hot and uncomfortable.

So uncomfortable to sit in the tiny space on a long, international. Food was rough. Please, less white flour and processed food.

Our flight was delayed 2.5 hrs due to plane being too hot! After 1.5 hrs, airline decided to use another plane but had to wait for gate, baggage transfer & beverage transfer. Anyone could tell after first half hour that another plane was required and although did not affect us many would miss connecting flights at Heathrow. I have found the stewards are not the friendliest in the industry and the food is questionable, even as I like airplane food normally, the best of the 2 flights was the yogurt & granola for breakfast.

Terrible boarding , Business class seats are sub standard. As usual crew will miss your food too

My flight got canceled. Then AC rebooked me to a next day flight. No compensation no apology. It almost messed up my entire trip and schedule. However, all the unexpepected seems routine and ordinary to AC, so customers need to get used to.

The food was horrible the flying attendance hardly made any checks and the seats were very tied ..

I love air Canada. The staff is so helpful and friendly and attentive. I paid for extra room but chose a ser near a person who took up a lot of space which gave me less space than regular economy, I was sad I did that!

I appreciated the flight was on schedule but the crew told us that the flight would be delayed because of an air craft queue to take off. Instead of us arriving at 11.55pm, we were in Toronto at something past 2am which was a massive disadvantage on my part.

For such a long flight they should offer tea or coffee in between two meals.

No seat assignment . Last on board . Though I would not receive any boarding pass

last minute was rebooked. This rebooking made me miss my connection, added a stop in my itinerary without my approval, and had me arriving 10 hours later to my destination...for a delay that was 2 hours. To boot, my final flight from London to Athens booked me in a middle seat, where I originally booked all aisle seats. This was incredibly uncomfortable for a 24 hour journey and made me incredibly upset.

Did not appreciate “hidden fees” to check a bag for international flight and purchase a seat to be next to my spouse. Won’t choose this airline again.

The flight left over 2 hours late and caused me to miss my connecting flight. Consequently, I missed my cruise ship out of Barcelona. The cost associated with this miss was as follows: Airfare to Sicily Italy to get on the ship TWO days late - $232.30 Taxi from Airport to hotel $35 Dinner at hotel $38 Hotel in Barcelona - $208 Taxi from Sicily to hotel $70 Hotel in Sicily - $148 Prorated time missed on cruise $ 1,143

No meal. Flight crew was wonderful, happily finding me storage for my guitar. THANK YOU!!!

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

Very bed boarding, there was overbooked and make a lot of problems and noises

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

Liked that my American Airlines status seamlessly transferred to BA so luggage check was free. Flights were on time, boarding quick. Wish they didn’t assign connecting gate so late at Heathrow.

The entire process was flawless and as expected flying first class. The only thing that I have a complaint on...when first boarding, the plane was EXTREMELY cold; then when we were trying to sleep, it was way too hot - just better regulating (especially trying to sleep) would have made it perfect.

Book cheap flights from Washington, D.C. to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to London found on KAYAK in the last 72 hours.
10/14Mon
1 stopJetBlue
12h 00mDCA-LHR
$357
9/19Thu
1 stopJetBlue
13h 00mDCA-LHR
$367
10/14Mon
2 stopsAir Canada
12h 35mDCA-LHR
$401
10/29Tue
2 stopsUnited Airlines
13h 10mDCA-LHR
$405
10/28Mon
2 stopsAir Canada
13h 35mDCA-LHR
$407
7/22Mon
2 stopsUnited Airlines
13h 30mDCA-LHR
$418
7/8Mon
1 stopBritish Airways
10h 05mDCA-LHR
$447
7/10Wed
2 stopsBritish Airways
18h 07mDCA-LHR
$452
8/2Fri
1 stopDelta
11h 40mDCA-LHR
$478
6/28Fri
1 stopDelta
9h 05mDCA-LHR
$867

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Last minute flights from Reagan-National to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to London that are departing in the next 10 days.
6/12Wed
multi-stopJetBlue
12h 00mDCA-LHR
6/20Thu
multi-stopJetBlue
11h 20mLHR-DCA
$939
6/11Tue
multi-stopJetBlue
14h 00mDCA-LHR
6/19Wed
multi-stopJetBlue
11h 20mLHR-DCA
$973
6/15Sat
multi-stopJetBlue
12h 25mDCA-LHR
6/20Thu
multi-stopJetBlue
11h 20mLHR-DCA
$981
6/15Sat
multi-stopAir Canada
28h 50mDCA-LHR
11/16Sat
multi-stopAir Canada
11h 53mLHR-DCA
$1,169
6/15Sat
multi-stopAir Canada
31h 55mDCA-LHR
11/16Sat
multi-stopAir Canada
24h 55mLHR-DCA
$1,171
6/15Sat
multi-stopDelta
9h 05mDCA-LHR
6/19Wed
multi-stopDelta
12h 46mLHR-DCA
$1,333
6/13Thu
multi-stopBritish Airways
14h 15mDCA-LHR
6/17Mon
multi-stopBritish Airways
24h 54mLHR-DCA
$1,451
6/14Fri
multi-stopBritish Airways
11h 10mDCA-LHR
6/19Wed
multi-stopBritish Airways
11h 17mLHR-DCA
$1,489
6/15Sat
multi-stopAmerican Airlines
11h 10mDCA-LHR
6/19Wed
multi-stopAmerican Airlines
15h 28mLHR-DCA
$1,663
6/12Wed
multi-stopAmerican Airlines
11h 10mDCA-LHR
6/21Fri
multi-stopAmerican Airlines
11h 29mLHR-DCA
$1,712

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Reagan Washington National Airport - London Heathrow Airport Flights

Departure:

Reagan Washington National Airport (DCA)United States

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Reagan Washington National Airport

Cabin classes: