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Find cheap flights from District of Columbia to Portugal from $242

This is the cheapest round-trip 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 9/18. 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
Thu 7/4
Thu 7/11

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In the last 7 days travelers have searched 44,060,346 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

July

Cheapest flight

$242
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 Lisbon

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

9/18Wed
1 stopTurkish Airlines
17h 40mIAD-LIS
9/23Mon
1 stopTurkish Airlines
27h 20mLIS-IAD
$242
10/12Sat
1 stopTAP AIR PORTUGAL
21h 10mIAD-OPO
10/14Mon
1 stopTAP AIR PORTUGAL
21h 25mOPO-IAD
$403
10/8Tue
1 stopSWISS
12h 55mIAD-LIS
10/15Tue
1 stopSWISS
15h 20mLIS-IAD
$404
11/10Sun
1 stopPLAY
21h 10mIAD-LIS
11/18Mon
1 stopPLAY
24h 40mLIS-IAD
$412
10/20Sun
1 stopPLAY
20h 30mIAD-LIS
11/8Fri
1 stopPLAY
24h 40mLIS-IAD
$419
11/24Sun
1 stopScandinavian Airlines
17h 25mIAD-LIS
12/8Sun
1 stopScandinavian Airlines
26h 05mLIS-IAD
$421
12/1Sun
1 stopDelta
11h 05mIAD-OPO
12/8Sun
1 stopDelta
15h 45mOPO-IAD
$425
11/9Sat
2 stopsDelta
17h 10mIAD-OPO
11/13Wed
1 stopDelta
12h 40mOPO-IAD
$440
11/8Fri
1 stopSWISS
33h 30mIAD-OPO
11/14Thu
1 stopSWISS
26h 05mOPO-IAD
$514
11/16Sat
1 stopScandinavian Airlines
23h 20mIAD-LIS
11/19Tue
1 stopScandinavian Airlines
31h 50mLIS-IAD
$528

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Recent one-way flight deals

7/14Sun
3 stops
57h 55mIAD-LIS
$295
7/14Sun
3 stops
57h 55mIAD-LIS
$300
11/13Wed
2 stops
19h 30mIAD-LIS
$302
9/25Wed
nonstopTAP AIR PORTUGAL
7h 15mIAD-LIS
$328
10/13Sun
1 stopPLAY
20h 30mIAD-LIS
$329
10/8Tue
nonstopTAP AIR PORTUGAL
7h 30mIAD-LIS
$330
10/13Sun
1 stopPLAY
20h 30mIAD-LIS
$336
9/17Tue
1 stopAustrian Airlines
35h 05mIAD-OPO
$346
9/2Mon
1 stopRoyal Air Maroc
15h 20mIAD-LIS
$362
9/7Sat
1 stopRoyal Air Maroc
15h 20mIAD-LIS
$376

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Last minute flights from District of Columbia to Portugal

Last minute flight, train and bus deals

6/6Thu
multi-stopAir France
16h 05mIAD-OPO
6/12Wed
multi-stopAir France
14h 55mOPO-IAD
$824
6/6Thu
multi-stopDelta
16h 05mIAD-OPO
6/10Mon
multi-stopDelta
15h 35mOPO-IAD
$825
6/5Wed
multi-stop
18h 55mIAD-LIS
6/11Tue
multi-stop
24h 20mLIS-IAD
$931
6/5Wed
multi-stop
17h 05mIAD-LIS
6/11Tue
multi-stop
25h 40mLIS-IAD
$963
6/6Thu
multi-stopUnited Airlines
11h 55mDCA-OPO
6/10Mon
multi-stopUnited Airlines
12h 27mOPO-DCA
$978
6/9Sun
multi-stopTAP AIR PORTUGAL
10h 20mIAD-OPO
6/26Wed
multi-stopTAP AIR PORTUGAL
11h 20mOPO-IAD
$989
6/6Thu
multi-stopSWISS
36h 00mIAD-OPO
6/10Mon
multi-stopSWISS
30h 40mOPO-IAD
$997
6/6Thu
nonstopTAP AIR PORTUGAL
7h 30mIAD-LIS
6/10Mon
nonstopTAP AIR PORTUGAL
8h 20mLIS-IAD
$1,039
6/6Thu
multi-stopUnited Airlines
11h 55mDCA-OPO
6/10Mon
multi-stopUnited Airlines
16h 56mOPO-DCA
$1,082
6/9Sun
multi-stopSWISS
19h 45mIAD-OPO
6/26Wed
multi-stopSWISS
32h 50mOPO-IAD
$1,101

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Flights to Portugal

Return flight deals:

Portugal - District of Columbia

Cabin classes:

$5,346
$1,384
$1,555
$463