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Find cheap flights from London to the United States from $153

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to the United States departing on 9/3. 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

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Best United States Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

New York
New York1 stop$349
Los Angeles
Los Angeles1 stop$399
Las Vegas
Las Vegas1 stop$294
Miami
Miami1 stop$449
San Francisco
San Francisco1 stop$372
Boston
Boston1 stop$387
Seattle
Seattle1 stop$376
Fort Lauderdale
Fort Lauderdale1 stop$324
Tampa
Tampa1 stop$682
Honolulu
Honolulu1 stop$545

Good to know

Low season

October

High season

February

Cheapest flight

$153
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from London to Los Angeles

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from London to the United States?

    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 London to the United States.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to the United States?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to the United States from London 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 London to the United States?

    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 the United States with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to the United States?

    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 the United States from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to the United States

  • Morning departure is around 29% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 3 airlines serving from London to the United States

Need help choosing which airline to fly with from London to the United States? 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.
7.0
Air CanadaOverall score based on 7070 reviews
6.2Food
7.0Comfort
7.2Boarding
6.8Entertainment
7.8Crew
Airline reviews

Experienced flight cancelations and delays in 5 days. They seem pretty common to AC. Experienced with one of AC's check-in agents at the counter of a big liar. She lied and acted (yes like acting in a movie) that an early flight was fully booked and refused to rebook me, but my flight was delayed two hours so I could not make my connection. Later, I got help at the gate to switch the early flight (Big thanks to that agent). Ater boading, I found the early flight was only 2/3 full meaning there was almost one vacant seat in a 3-person seater, and multiple empty 3-seaters. AC is wired that it is filled with good and bad employees. BTW, AC employees seem never smile, or they don't know how.

2.0 MediocreJ, Jun 2024YYZ - SFO
Read more about Air Canada reviews

Experienced flight cancelations and delays in 5 days. They seem pretty common to AC. Experienced with one of AC's check-in agents at the counter of a big liar. She lied and acted (yes like acting in a movie) that an early flight was fully booked and refused to rebook me, but my flight was delayed two hours so I could not make my connection. Later, I got help at the gate to switch the early flight (Big thanks to that agent). Ater boading, I found the early flight was only 2/3 full meaning there was almost one vacant seat in a 3-person seater, and multiple empty 3-seaters. AC is wired that it is filled with good and bad employees. BTW, AC employees seem never smile, or they don't know how.

Not much food/snacks. I had just tea and it was so bitter.

My mother, 80years old, had arranged for wheelchair assist to and from the aircraft cabin and in the airport but, no one showed up for her to de-plane. Apart from Air Canada having a reputation of being late for every leg of its flight so nothing was new this time so this time they did worse by not assisting seniors. I guess our whole family is done with this airline

Seating for almost 3 hours in the plan before aircraft takeoff. Very exhausted .

The bathroom did not have hand soap. That is unacceptable.

I was seated next to someone who was, to be polite, not a small person. I had to press myself against the wall as I had no personal space. Aside from that the crew was wonderful and they got me home safely, which is the most important part of my journey. I am very appreciative to your air crews for the job they have, which isn't easy, and appreciative of the fact that they are professional and courteous. The employees I encountered on my journey, with the few exceptions I mentioned in a previous review, are a credit to Air Canada.

Air Canada had a lot of delays on our flight going back to Seattle. So much inconvenience for a long trip.

The Carry-on luggage that approved by TSA and all other airlines,- always an issue with Air Canada. This is inappropriate as my carry on suitcase meets the requirements however it always asked to check in on AC flight on the gate. Yes I have it for free, but it takes extra time to pick up on the carousel. Apparently it fit the overhead space, so why AC has this issue all the time?

The terminal this flight boarded from was so far away, poorly temperature controlled, and generally uncomfortable. The plane was small but the flight was short, so it wasn't so bad.

Seriously need to improve the time schedule and the plans

Flight was good and staff was efficient and friendly. Being a discount airline, they charge for carry on, food and beverages. I did not partake, but your survey doesn't have a n/a button. My only thing was that it felt like I was sitting on a cement block. My behind was sore after a couple of hours. I was not able to check in on line, so very thankful that the linecat the airport moved quickly. I think I will use Swoop in future if I just need to get somewhere and don't need to bring carry on bags.

Bring your own water, do not expect and comfort on the plan, and over priced gross processed food. Drinks were could (paid for) and saw we needed to bring our own water for a 5 hour flight. Kinda shitty you have to pay for carry on- same price and stowaway luggage. The luggage cost more than 2 round trips from Toronto to Victoria bc. Shocked at that

Airline did Not inform us is further delays to an already cancelled flight. Big chaos prior to boarding.

I would take swoop for a 1, maybe 2 hour flight MAX. Every thing is an up charge, even water. The seats don’t recline so it makes it very tough sitting in that small space. The crew was amazing though, they went above and beyond to try and make the experience comfortable. Also, we were delayed a total of 4 times - 5 hours.

I've flown with swoop a few times and always had a good experience. The crew are pleasant and helpful. Thanks

It’s a no frills airline, professional and gets the job done well.

Nothing at all. The flight attendants couldn’t care less about the passengers. Overheard 2 complaint about being “too tired to bother or care about anything”. Complaining about working 2 jobs and was even too tired to care about returning a lost pair of glasses that they just threw away. Never flying this crappy airline again.

Really nice flight barring a one hour delay, which was already informed. Staff at abbottsford check in counter was very friendly and helpful. Her name was Robin.

Lack of staff Airplane (even with upgraded seats) was not comfortable Boarding took extremely long, no system in place Inconsistent messaging on reason for delay

I sat near a man who continually took his mask off. He was told to put it on 3 different times. He would say “ oh sorry” then remove it as soon as they walked away. By the end of the flight they had given up and they all walked by him “maskless” and didn’t say anything. He coughed and sneezed throughout the flight

The crew of this flight, specially the flight attendant in the front were the sweetest I’ve had in all my life, I genuinely hope they get a race or sum cuz of their efforts. It was just quite unsettling that the flight took so long to departure. It was supposed to leave at 10:35pm and we ended up taking off at 11:22pm…👎🏻👎🏻👎🏻

It’s bare bones but was on time so can’t complain.

Of all the countries I've flown to and airlines from around the world, I have never had such a dismissive an arrogant employee during boarding. After waiting in line for 20 minutes to board, I was sent to a second line for Passport verification. Natalie from Flair, repeatedly tried to scan my passport which didn't work for some reason but was too lazy to input my information manually. Bar code scanners aren't 100% reliable as we all know. She asked me my birthdate 3 times, made me wait to be the last person aboard and then smugly threatened me that my only bag could be charged for (same backpack I used as on my arrival as carry on). Natalie working in Ft. Lauderdale and the was the epitome of lobotomized tiktok brain with the charm of junk mail.

Food selection is very poor and sears are very uncomfortable.

Flight was 3 hrs late and another 2 hrs wait for baggage to arrive on carousel and a $7.00 food voucher that arrived as we were boarding our flight.

Seat rows so close together no one dares to put their seats back. Knees pressed against the seat in front, had to find a position putting my legs under the seat in front. But for 6 hours keeping that one position was ridiculous. All savings on the purchase price are taken back through charge backs for luggage $200 each way, Seat selection $44 per seat or you are seated by a computer randomly. Wife sat 5 rows away. Would avoid Flair in the future

The flight was safe (priority). Everything else is low-cost: too hard, delays, mediocre boarding, cost for carry-on and checked luggage.

Flair flight was 4 hours late due to not having a crew and the plane was filthy. Just water service Terrible experience flight 1513

Flair did not notify you when they changed gate number!

Can't be happy with a 5 hour delay. Only given $10 voucher for food and still EVERYTHING was an upcharge during the flight.

Book cheap flights from London to the United States

Recent round-trip flight deals

9/9Mon
1 stopAir Canada
9h 22mYXU-LAS
9/14Sat
2 stopsAir Canada
8h 47mLAS-YXU
$294
9/1Sun
1 stopAir Canada
9h 27mYXU-LAS
9/7Sat
1 stopAir Canada
7h 17mLAS-YXU
$295
7/10Wed
2 stopsUnited Airlines
18h 18mYXU-LAS
7/12Fri
2 stopsUnited Airlines
10h 46mLAS-YXU
$300
8/20Tue
2 stopsAir Canada
9h 52mYXU-LAS
8/24Sat
2 stopsAir Canada
11h 46mLAS-YXU
$319
7/10Wed
2 stopsUnited Airlines
18h 18mYXU-LAS
7/13Sat
2 stopsUnited Airlines
19h 53mLAS-YXU
$345
7/10Wed
1 stop
4h 58mYXU-LGA
7/17Wed
1 stop
6h 15mLGA-YXU
$349
7/16Tue
1 stopWestJet
14h 07mYXU-SEA
7/23Tue
1 stopWestJet
8h 59mSEA-YXU
$376
10/19Sat
2 stops
12h 33mYXU-BNA
10/23Wed
2 stops
9h 37mBNA-YXU
$389
7/10Wed
2 stopsWestJet
27h 05mYXU-LAX
7/31Wed
2 stopsWestJet
33h 48mLAX-YXU
$421
7/19Fri
2 stopsDelta
13h 09mYXU-SEA
7/27Sat
1 stopDelta
8h 59mSEA-YXU
$505

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Recent one-way flight deals

9/3Tue
1 stopAir Canada
7h 58mYXU-LAX
$153
9/3Tue
2 stopsAir Canada
9h 39mYXU-LAX
$168
7/15Mon
1 stopFlair Airlines
17h 50mYXU-LAX
$195
6/15Sat
1 stopWestJet
9h 41mYXU-SEA
$199
7/1Mon
2 stopsUnited Airlines
16h 30mYXU-MIA
$203
9/3Tue
3 stopsWestJet
16h 50mYXU-LAX
$211
7/12Fri
1 stopFlair Airlines
17h 50mYXU-LAX
$215
7/15Mon
2 stops
23h 22mYXU-LAX
$218
10/30Wed
2 stopsUnited Airlines
13h 08mYXU-BNA
$228
7/13Sat
2 stops
17h 43mYXU-ORD
$279

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Last minute flights from London to the United States

Last minute flight, train and bus deals

6/15Sat
multi-stopWestJet
10h 36mYXU-LAX
6/22Sat
multi-stopWestJet
21h 54mLAX-YXU
$699
6/15Sat
multi-stopWestJet
10h 36mYXU-LAX
6/22Sat
multi-stopWestJet
18h 59mLAX-YXU
$787
6/15Sat
multi-stopWestJet
16h 50mYXU-LAX
6/22Sat
multi-stopWestJet
18h 59mLAX-YXU
$800
6/15Sat
multi-stopWestJet
18h 02mYXU-LAX
6/22Sat
multi-stopWestJet
29h 18mLAX-YXU
$1,226

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