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Find cheap flights from District of Columbia to Portugal from $355

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from District of Columbia to Portugal departing on 7/15. 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
Sat 6/29
Sat 7/6

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In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

July

Cheapest flight

$355
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Washington Dulles Airport to Porto

FAQs for booking flights from District of Columbia to Portugal

  • How does KAYAK find such low prices on flights from District of Columbia 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 District of Columbia to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portugal from District of Columbia 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 District of Columbia 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 District of Columbia with another airline.

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

Recent round-trip flight deals

11/3Sun
1 stopPLAY
21h 10mIAD-LIS
11/11Mon
1 stopPLAY
24h 40mLIS-IAD
$400
9/8Sun
1 stopPLAY
20h 30mIAD-LIS
9/16Mon
1 stopPLAY
25h 10mLIS-IAD
$413
10/8Tue
nonstopTAP AIR PORTUGAL
7h 10mIAD-LIS
10/16Wed
nonstopTAP AIR PORTUGAL
8h 20mLIS-IAD
$483
10/17Thu
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
10/24Thu
nonstopTAP AIR PORTUGAL
8h 20mLIS-IAD
$498
11/6Wed
1 stopRoyal Air Maroc
10h 05mIAD-LIS
11/25Mon
1 stopRoyal Air Maroc
10h 55mLIS-IAD
$546
11/1Fri
1 stopRoyal Air Maroc
10h 05mIAD-LIS
11/6Wed
1 stopRoyal Air Maroc
12h 10mLIS-IAD
$547
10/9Wed
nonstop
7h 15mIAD-LIS
10/16Wed
2 stops
17h 55mLIS-IAD
$605
11/5Tue
1 stopBritish Airways
12h 45mIAD-LIS
11/11Mon
1 stopBritish Airways
26h 10mLIS-IAD
$613
9/1Sun
nonstop
7h 30mIAD-LIS
12/7Sat
2 stops
24h 40mLIS-IAD
$622
8/6Tue
2 stopsBritish Airways
20h 30mDCA-OPO
8/19Mon
2 stopsBritish Airways
26h 26mOPO-DCA
$635

Search by stops

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Recent one-way flight deals

7/15Mon
1 stopPLAY
20h 10mIAD-OPO
$355
10/10Thu
1 stop
21h 05mIAD-FNC
$379
7/21Sun
1 stopTAP AIR PORTUGAL
23h 50mIAD-OPO
$416
7/31Wed
1 stopRoyal Air Maroc
15h 20mIAD-LIS
$441
7/11Thu
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
$442
7/17Wed
1 stopRoyal Air Maroc
10h 00mIAD-LIS
$446
7/21Sun
2 stopsAmerican Airlines
27h 55mDCA-OPO
$484
7/15Mon
1 stopUnited Airlines
9h 30mDCA-OPO
$507
11/3Sun
2 stopsAmerican Airlines
20h 09mDCA-LIS
$602
11/24Sun
1 stopUnited Airlines
10h 40mDCA-LIS
$627

Search by stops

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Search by price

Last minute flights from District of Columbia to Portugal

Last minute flight, train and bus deals

6/3Mon
multi-stop
26h 05mIAD-LIS
6/11Tue
multi-stop
36h 00mLIS-IAD
$820
6/1Sat
multi-stopKLM
16h 50mIAD-OPO
6/8Sat
multi-stopKLM
16h 00mOPO-IAD
$839
6/1Sat
multi-stopKLM
11h 50mIAD-OPO
6/8Sat
multi-stopKLM
17h 27mOPO-IAD
$849
6/4Tue
multi-stop
33h 25mIAD-LIS
6/11Tue
multi-stop
21h 40mLIS-IAD
$916
6/3Mon
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
6/11Tue
nonstopTAP AIR PORTUGAL
8h 20mLIS-IAD
$957
6/2Sun
multi-stopPLAY
20h 30mIAD-LIS
6/10Mon
multi-stopPLAY
25h 10mLIS-IAD
$973
6/3Mon
nonstopTAP AIR PORTUGAL
7h 30mIAD-LIS
6/11Tue
multi-stopTAP AIR PORTUGAL
26h 29mLIS-IAD
$977
5/31Fri
multi-stopRoyal Air Maroc
11h 35mIAD-LIS
6/7Fri
multi-stopRoyal Air Maroc
29h 40mLIS-IAD
$1,078
6/1Sat
multi-stopDelta
14h 50mIAD-OPO
6/8Sat
multi-stopDelta
22h 58mOPO-IAD
$1,240
5/31Fri
multi-stopRoyal Air Maroc
11h 35mIAD-LIS
6/8Sat
multi-stopRoyal Air Maroc
26h 50mLIS-IAD
$1,490

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Flights to Portugal

Return flight deals:

Portugal - District of Columbia

Cabin classes:

$5,346
$1,763
$1,583
$437