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Find cheap flights from District of Columbia to Portugal from $319

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 9/22. 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
Tue 7/2
Tue 7/9

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In the last 7 days travelers have searched 42,335,261 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

July

Cheapest flight

$319
Best time to beat the crowds with an average 28% 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
$391
11/3Sun
1 stopPLAY
21h 10mIAD-LIS
11/11Mon
1 stopPLAY
24h 40mLIS-IAD
$396
10/7Mon
1 stopTAP AIR PORTUGAL
13h 40mIAD-OPO
10/14Mon
1 stopTAP AIR PORTUGAL
21h 25mOPO-IAD
$428
9/23Mon
1 stopTAP AIR PORTUGAL
12h 20mIAD-OPO
10/2Wed
1 stopTAP AIR PORTUGAL
33h 20mOPO-IAD
$433
11/27Wed
2 stopsDelta
17h 30mDCA-OPO
12/2Mon
2 stopsDelta
17h 18mOPO-DCA
$452
11/13Wed
1 stopUnited Airlines
16h 35mIAD-OPO
11/26Tue
2 stopsUnited Airlines
39h 24mOPO-IAD
$493
11/13Wed
2 stops
16h 05mIAD-OPO
11/26Tue
1 stop
14h 50mOPO-IAD
$497
11/13Wed
2 stopsUnited Airlines
25h 56mIAD-OPO
11/26Tue
2 stopsUnited Airlines
51h 53mOPO-IAD
$503
10/22Tue
2 stops
20h 35mIAD-OPO
10/31Thu
2 stops
43h 53mOPO-IAD
$533
10/13Sun
1 stopDelta
13h 10mIAD-OPO
10/16Wed
1 stopDelta
11h 55mOPO-IAD
$553

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Recent one-way flight deals

9/22Sun
2 stops
18h 45mIAD-OPO
$319
7/15Mon
2 stops
17h 10mIAD-FAO
$336
9/22Sun
1 stopTAP AIR PORTUGAL
23h 50mIAD-OPO
$357
7/15Mon
1 stopSWISS
30h 50mIAD-FAO
$357
9/18Wed
1 stopTAP AIR PORTUGAL
11h 20mIAD-OPO
$362
7/15Mon
1 stopPLAY
20h 10mIAD-OPO
$414
7/31Wed
1 stopRoyal Air Maroc
15h 20mIAD-LIS
$440
7/17Wed
1 stopRoyal Air Maroc
15h 20mIAD-LIS
$445
7/1Mon
1 stopPLAY
20h 10mIAD-OPO
$460
6/7Fri
1 stopSWISS
16h 35mIAD-FAO
$957

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Search by price

Last minute flights from District of Columbia to Portugal

Last minute flight, train and bus deals

6/6Thu
multi-stopTAP AIR PORTUGAL
13h 45mIAD-OPO
6/12Wed
multi-stopTAP AIR PORTUGAL
18h 20mOPO-IAD
$773
6/6Thu
multi-stopDelta
14h 50mIAD-OPO
6/12Wed
multi-stopDelta
11h 55mOPO-IAD
$828
6/3Mon
multi-stopKLM
17h 15mIAD-OPO
6/9Sun
multi-stopKLM
15h 35mOPO-IAD
$838
6/6Thu
multi-stopDelta
15h 20mDCA-OPO
6/12Wed
multi-stopDelta
18h 16mOPO-DCA
$838
6/3Mon
multi-stopKLM
15h 13mDCA-OPO
6/8Sat
multi-stopKLM
16h 11mOPO-DCA
$853
6/4Tue
nonstop
7h 35mIAD-LIS
6/12Wed
multi-stop
40h 15mLIS-IAD
$907
6/3Mon
multi-stop
42h 55mIAD-OPO
6/9Sun
multi-stop
27h 55mOPO-IAD
$912
6/6Thu
multi-stopUnited Airlines
11h 55mDCA-OPO
6/12Wed
multi-stopUnited Airlines
12h 27mOPO-DCA
$928
6/6Thu
multi-stopUnited Airlines
11h 55mDCA-OPO
6/12Wed
multi-stopUnited Airlines
15h 27mOPO-DCA
$969
6/5Wed
multi-stopLufthansa
19h 25mIAD-OPO
6/10Mon
multi-stopLufthansa
31h 20mOPO-IAD
$1,003

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Flights to Portugal

Return flight deals:

Portugal - District of Columbia

Cabin classes:

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