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Cheap flights from District of Columbia to Portugal from $252

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Portugal departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from District of Columbia to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:50 pm - 10:30 amIAD-OPO
10h 40m1 stop
Delta Logo
11:25 am - 11:53 amOPO-IAD
28h 28m2 stops
$493Delta
Find Deal
Tue, Mar 10 - Wed, Mar 18
Delta Logo
6:05 pm - 3:25 pmIAD-OPO
16h 20m1 stop
Delta Logo
6:30 am - 7:12 pmOPO-IAD
40h 42m2 stops
$494Delta
Find Deal
Sun, Mar 1 - Fri, Mar 13
Air Canada Logo
6:00 am - 12:50 pmDCA-OPO
25h 50m2 stops
Air Canada Logo
6:00 am - 10:21 amOPO-DCA
57h 21m2 stops
$495Air Canada
Find Deal
Mon, Dec 1 - Mon, Dec 8
TAP AIR PORTUGAL Logo
10:30 pm - 6:00 pmIAD-OPO
14h 30m1 stop
TAP AIR PORTUGAL Logo
11:00 am - 9:00 pmOPO-IAD
15h 00m1 stop
$497TAP AIR PORTUGAL
Find Deal
Fri, Dec 5 - Fri, Dec 12
United Airlines Logo
4:10 pm - 11:40 amDCA-OPO
38h 30m2 stops
United Airlines Logo
6:00 am - 7:07 pmOPO-DCA
18h 07m2 stops
$499United Airlines
Find Deal
Mon, Dec 1 - Fri, Dec 12
Multiple Airlines Logo
6:00 pm - 11:40 amIAD-OPO
12h 40m1 stop
Multiple Airlines Logo
6:00 am - 8:59 pmOPO-IAD
43h 59m2 stops
$499Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
TAP AIR PORTUGAL Logo
10:30 pm - 5:00 pmIAD-OPO
13h 30m1 stop
TAP AIR PORTUGAL Logo
8:55 am - 9:00 pmOPO-IAD
17h 05m1 stop
$500TAP AIR PORTUGAL
Find Deal
Fri, Dec 5 - Wed, Dec 10
Multiple Airlines Logo
11:05 am - 12:50 pmDCA-OPO
20h 45m2 stops
Multiple Airlines Logo
8:40 am - 9:56 pmOPO-DCA
18h 16m2 stops
$504Multiple Airlines
Find Deal
Mon, Dec 1 - Fri, Dec 12
United Airlines Logo
2:00 pm - 11:40 amDCA-OPO
16h 40m2 stops
United Airlines Logo
12:35 pm - 9:35 pmOPO-DCA
13h 00m1 stop
$515United Airlines
Find Deal
Sun, Feb 15 - Tue, Mar 24
Air Canada Logo
11:05 am - 12:05 pmDCA-OPO
20h 00m2 stops
Air Canada Logo
6:00 am - 7:59 pmOPO-DCA
42h 59m2 stops
$534Air Canada
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Thu, Feb 12 - Wed, Feb 18

Royal Air Maroc flights from District of Columbia to Portugal

Our best Royal Air Maroc deals on District of Columbia to Portugal flight tickets
Royal Air Maroc
Dec 5
IAD8:45 pmWashington, D.C. Dulles Intl
9h 50m
1 stop
LIS11:35 amLisbon Humberto Delgado
Dec 12
LIS5:55 pmLisbon Humberto Delgado
29h 50m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$636
Find similar
Royal Air Maroc
Jan 9
IAD8:45 pmWashington, D.C. Dulles Intl
9h 50m
1 stop
LIS11:35 amLisbon Humberto Delgado
Jan 23
LIS12:30 pmLisbon Humberto Delgado
11h 15m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$640
Find similar
Royal Air Maroc
Nov 30
IAD8:45 pmWashington, D.C. Dulles Intl
9h 50m
1 stop
LIS11:35 amLisbon Humberto Delgado
Dec 3
LIS11:35 amLisbon Humberto Delgado
12h 10m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$657
Find similar

Turkish Airlines flights from District of Columbia to Portugal

Our best Turkish Airlines deals on District of Columbia to Portugal flight tickets
Turkish Airlines
Jan 1
IAD1:30 pmWashington, D.C. Dulles Intl
20h 35m
1 stop
LIS3:05 pmLisbon Humberto Delgado
Feb 19
LIS6:00 amLisbon Humberto Delgado
18h 20m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$638
Find similar
Turkish Airlines
Apr 9
IAD9:40 pmWashington, D.C. Dulles Intl
36h 55m
1 stop
LIS3:35 pmLisbon Humberto Delgado
Apr 19
LIS6:05 amLisbon Humberto Delgado
34h 30m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$644
Find similar
Turkish Airlines
Nov 23
IAD1:30 pmWashington, D.C. Dulles Intl
16h 10m
1 stop
LIS10:40 amLisbon Humberto Delgado
Nov 30
LIS4:05 pmLisbon Humberto Delgado
24h 40m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$698
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 17, 2025.
Use the filters below to find and compare flights from District of Columbia to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/10

7:50 pm-10:30 am

1 stop10h 40m

Porto

Wed 3/18

11:25 am-11:53 am

2 stops28h 28m

$493

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 3/1

6:05 pm-3:25 pm

1 stop16h 20m

Porto

Fri 3/13

6:30 am-7:12 pm

2 stops40h 42m

$494

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 12/1

6:00 am-12:50 pm

2 stops25h 50m

Porto

Mon 12/8

6:00 am-10:21 am

2 stops57h 21m

$495

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Fri 12/5

10:30 pm-6:00 pm

1 stop14h 30m

Porto

Fri 12/12

11:00 am-9:00 pm

1 stop15h 00m

$497

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 12/1

4:10 pm-11:40 am

2 stops38h 30m

Porto

Fri 12/12

6:00 am-7:07 pm

2 stops18h 07m

$499

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 12/1

6:00 pm-11:40 am

1 stop12h 40m

Porto

Mon 12/8

6:00 am-8:59 pm

2 stops43h 59m

$499

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Fri 12/5

10:30 pm-5:00 pm

1 stop13h 30m

Porto

Wed 12/10

8:55 am-9:00 pm

1 stop17h 05m

$500

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 12/1

11:05 am-12:50 pm

2 stops20h 45m

Porto

Fri 12/12

8:40 am-9:56 pm

2 stops18h 16m

$504

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 2/15

2:00 pm-11:40 am

2 stops16h 40m

Porto

Tue 3/24

12:35 pm-9:35 pm

1 stop13h 00m

$515

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Thu 2/12

11:05 am-12:05 pm

2 stops20h 00m

Porto

Wed 2/18

6:00 am-7:59 pm

2 stops42h 59m

$534

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

How to get the cheapest flight ticket from District of Columbia to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from District of Columbia is in February. Flight prices, which tend to average around $683, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from District of Columbia during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $735.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Monday is the cheapest day to fly to Portugal from District of Columbia. The lowest ticket price found for a Monday departure recently was $708. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $885.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is at noon. Flights from District of Columbia to Portugal during this time can be as low as $661. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $838 per ticket.

What is the cheapest District of Columbia to Portugal flight route?

Fly from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado for the best District of Columbia - Portugal flight prices

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $906 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from District of Columbia for as low as $733 on momondo.

What cabin class options are available on District of Columbia to Portugal flights?

There are 3 cabin classes available to choose from on District of Columbia to Portugal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on District of Columbia to Portugal flights?

You could potentially save up to 40% on your flight if you consider stops on a District of Columbia to Portugal flight.

Cheap District of Columbia to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Portugal

Best Price Found

$290

Fastest flight time

7h 05m

Direct flights

Every day

Airports in Portugal

1 airport
The best one-way flight to Portugal from District of Columbia in the past 72 hours is $290. The best round-trip flight deal from District of Columbia to Portugal found on momondo in the last 72 hours is $486.
The fastest flight from District of Columbia to Portugal takes 7h 05m
Direct flights go from District of Columbia to Portugal every day.
There is 1 airport near Portugal: Lisbon Humberto Delgado (LIS)
Search flight deals

  • When did momondo last update prices for flights from District of Columbia to Portugal?

    Prices for flights from District of Columbia to Portugal are updated daily.

  • How many operators does momondo search for flights from District of Columbia to Portugal?

  • How old do you have to be to fly from District of Columbia to Portugal?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from District of Columbia to Portugal?

Best airlines flying from District of Columbia to Portugal

Compare and see reviews for airlines that fly from District of Columbia to Portugal with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $345Free CancellationRating
7.0
103 reviews
Search PLAY flights
United AirlinesPriceFrom $493Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $504Free CancellationRating
7.4
1,577 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom $505Free CancellationRating
7.1
2,062 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom $508Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
British AirwaysPriceFrom $510Free CancellationRating
6.7
7,527 reviews
Search British Airways flights
IberiaPriceFrom $515Free CancellationRating
7.0
3,018 reviews
Search Iberia flights
DeltaPriceFrom $529Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Royal Air MarocPriceFrom $552Free CancellationRating
6.2
530 reviews
Search Royal Air Maroc flights
KLMPriceFrom $555Free CancellationRating
7.7
1,411 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Portugal?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portugal from District of Columbia.

Can I find flights from District of Columbia to Portugal with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portugal from District of Columbia with this policy.

How can momondo help me find flights from District of Columbia to Portugal?

Once you have performed a search for District of Columbia to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from District of Columbia to Portugal right now. Can momondo alert me if prices change?

Price alerts on flights to Portugal from District of Columbia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Portugal trip

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Find better results for your trip to Portugal

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