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Find cheap flights from Maryland to Portugal from $260

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Maryland to Portugal departing on 8/18. 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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In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

July

Cheapest flight

$260
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Washington Dulles Airport to Porto

FAQs for booking flights from Maryland to Portugal

  • How does KAYAK find such low prices on flights from Maryland to Portugal?

    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 Maryland to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portugal from Maryland 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 Maryland to Portugal?

    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 Portugal with an airline and back to Maryland with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maryland to Portugal?

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

See more FAQs

Book cheap flights from Maryland to Portugal

Recent round-trip flight deals

12/5Thu
1 stopPLAY
21h 10mIAD-LIS
12/9Mon
1 stopPLAY
24h 40mLIS-IAD
$378
12/5Thu
1 stopPLAY
21h 10mIAD-LIS
12/16Mon
1 stopPLAY
24h 40mLIS-IAD
$381
8/13Tue
1 stopTAP AIR PORTUGAL
11h 00mIAD-OPO
9/5Thu
1 stopTAP AIR PORTUGAL
13h 20mOPO-IAD
$402
9/30Mon
1 stopTAP AIR PORTUGAL
17h 05mIAD-OPO
10/21Mon
1 stopTAP AIR PORTUGAL
26h 20mOPO-IAD
$406
11/11Mon
2 stopsKLM
15h 25mBWI-OPO
11/18Mon
2 stopsKLM
16h 01mOPO-BWI
$450
12/1Sun
2 stopsDelta
17h 09mBWI-OPO
12/4Wed
2 stopsDelta
18h 46mOPO-BWI
$453
11/5Tue
1 stopAmerican Airlines
22h 25mIAD-LIS
11/12Tue
2 stopsAmerican Airlines
26h 18mLIS-IAD
$473
11/5Tue
1 stopAmerican Airlines
16h 26mDCA-LIS
11/20Wed
2 stopsAmerican Airlines
16h 02mLIS-DCA
$474
11/16Sat
2 stopsKLM
16h 16mBWI-OPO
11/23Sat
2 stopsKLM
16h 01mOPO-BWI
$515
11/15Fri
2 stopsDelta
16h 10mBWI-OPO
11/24Sun
2 stopsDelta
18h 46mOPO-BWI
$518

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Recent one-way flight deals

8/18Sun
1 stopTAP AIR PORTUGAL
10h 20mIAD-OPO
$260
7/22Mon
nonstopTAP AIR PORTUGAL
7h 30mIAD-LIS
$264
9/16Mon
2 stops
23h 40mBWI-LIS
$275
9/24Tue
2 stops
31h 00mBWI-LIS
$277
10/13Sun
1 stopPLAY
20h 30mIAD-LIS
$323
8/19Mon
1 stopPLAY
20h 10mBWI-OPO
$336
9/16Mon
1 stopRoyal Air Maroc
15h 40mIAD-OPO
$363
9/4Wed
1 stopRoyal Air Maroc
10h 00mIAD-LIS
$363
11/13Wed
2 stopsScandinavian Airlines
24h 00mIAD-LIS
$440
11/14Thu
2 stopsScandinavian Airlines
24h 30mIAD-LIS
$519

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Search by price

Last minute flights from Maryland to Portugal

Last minute flight, train and bus deals

6/12Wed
multi-stopUnited Airlines
11h 21mPHL-LIS
6/19Wed
multi-stopUnited Airlines
30h 34mLIS-PHL
$913
6/11Tue
multi-stopBritish Airways
14h 10mIAD-LIS
6/18Tue
multi-stopBritish Airways
18h 15mLIS-IAD
$936
6/11Tue
multi-stopDelta
19h 54mPHL-LIS
6/18Tue
multi-stopDelta
13h 39mLIS-PHL
$947
6/11Tue
multi-stopDelta
19h 54mPHL-LIS
6/18Tue
multi-stopDelta
18h 09mLIS-PHL
$951
6/11Tue
multi-stop
25h 26mDCA-LIS
7/2Tue
multi-stop
25h 13mLIS-DCA
$968
6/11Tue
multi-stopLufthansa
16h 55mPHL-LIS
6/18Tue
multi-stopLufthansa
15h 30mLIS-PHL
$1,007
6/12Wed
multi-stopLufthansa
16h 40mPHL-LIS
6/19Wed
multi-stopLufthansa
14h 45mLIS-PHL
$1,026
6/12Wed
multi-stop
35h 41mIAD-LIS
6/19Wed
multi-stop
17h 15mLIS-IAD
$1,051
6/13Thu
multi-stopPLAY
20h 30mBWI-LIS
6/24Mon
multi-stopPLAY
25h 10mLIS-BWI
$1,137
6/13Thu
multi-stopPLAY
20h 30mBWI-LIS
6/24Mon
multi-stopPLAY
25h 10mLIS-BWI
$1,183

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Flights to Portugal

Return flight deals:

Portugal - Maryland

Cabin classes: