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Cheap flights from Washington, D.C. Reagan-National Airport to Portugal from $306

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Portugal departing on 9/16. 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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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Portugal

Cheap round-trip flights

American Airlines Logo
12:59 pm - 7:35 amDCA-OPO
13h 36m2 stops
American Airlines Logo
8:20 am - 8:59 pmOPO-DCA
16h 39m2 stops
$559American Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
United Airlines Logo
2:00 pm - 11:20 amDCA-OPO
16h 20m2 stops
United Airlines Logo
12:35 pm - 8:38 pmOPO-DCA
12h 03m1 stop
$570United Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
British Airways Logo
10:00 pm - 4:40 pmDCA-OPO
37h 40m2 stops
British Airways Logo
8:20 am - 7:14 pmOPO-DCA
15h 54m2 stops
$586British Airways
Find Deal
Sat, Dec 13 - Wed, Jan 14
British Airways Logo
10:15 pm - 7:15 pmDCA-OPO
40h 00m2 stops
British Airways Logo
12:25 pm - 4:51 pmOPO-DCA
33h 26m2 stops
$591British Airways
Find Deal
Thu, Nov 6 - Tue, Nov 11
Air Canada Logo
6:00 am - 11:10 amDCA-OPO
24h 10m2 stops
Air Canada Logo
6:00 am - 8:40 pmOPO-DCA
19h 40m2 stops
$602Air Canada
Find Deal
Fri, Nov 7 - Sat, Nov 15
Air Canada Logo
6:00 am - 11:30 amDCA-OPO
24h 30m2 stops
Air Canada Logo
11:05 am - 10:20 amOPO-DCA
28h 15m2 stops
$606Air Canada
Find Deal
Tue, Oct 7 - Tue, Oct 14
Delta Logo
12:05 pm - 10:30 amDCA-OPO
17h 25m2 stops
Delta Logo
11:25 am - 10:50 pmOPO-DCA
16h 25m2 stops
$610Delta
Find Deal
Wed, Dec 17 - Wed, Dec 24
Delta Logo
5:00 pm - 3:25 pmDCA-OPO
17h 25m2 stops
Delta Logo
11:15 am - 6:06 pmOPO-DCA
35h 51m2 stops
$622Delta
Find Deal
Mon, Dec 15 - Thu, Jan 8
TAP AIR PORTUGAL Logo
4:55 pm - 6:35 pmDCA-PDL
21h 40m2 stops
TAP AIR PORTUGAL Logo
9:30 am - 2:59 pmPDL-DCA
33h 29m2 stops
$802TAP AIR PORTUGAL
Find Deal
Mon, Nov 10 - Wed, Nov 19
TAP AIR PORTUGAL Logo
6:05 am - 1:30 pmDCA-FNC
26h 25m2 stops
TAP AIR PORTUGAL Logo
4:10 am - 6:59 pmFNC-DCA
19h 49m2 stops
$992TAP AIR PORTUGAL
Find Deal
Thu, Feb 19 - Tue, Feb 24

Air Canada flights from Washington, D.C. Reagan-National Airport to Portugal

Our best Air Canada deals on Washington, D.C. Reagan-National Airport to Portugal flight tickets
Air Canada
Nov 7
DCA6:00 amWashington, D.C. Reagan-National
24h 10m
2 stops
OPO11:10 amPorto
Nov 15
OPO6:00 amPorto
19h 40m
2 stops
DCA8:40 pmWashington, D.C. Reagan-National
$602
Find similar
Air Canada
Oct 7
DCA6:00 amWashington, D.C. Reagan-National
24h 30m
2 stops
OPO11:30 amPorto
Oct 14
OPO11:05 amPorto
28h 15m
2 stops
DCA10:20 amWashington, D.C. Reagan-National
$606
Find similar
Air Canada
Oct 16
DCA6:59 amWashington, D.C. Reagan-National
27h 46m
2 stops
OPO3:45 pmPorto
Oct 21
OPO6:00 amPorto
38h 51m
2 stops
DCA3:51 pmWashington, D.C. Reagan-National
$609
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British Airways flights from Washington, D.C. Reagan-National Airport to Portugal

Our best British Airways deals on Washington, D.C. Reagan-National Airport to Portugal flight tickets
British Airways
Dec 13
DCA10:00 pmWashington, D.C. Reagan-National
37h 40m
2 stops
OPO4:40 pmPorto
Jan 14
OPO8:20 amPorto
15h 54m
2 stops
DCA7:14 pmWashington, D.C. Reagan-National
$586
Find similar
British Airways
Nov 6
DCA10:15 pmWashington, D.C. Reagan-National
40h 00m
2 stops
OPO7:15 pmPorto
Nov 11
OPO12:25 pmPorto
33h 26m
2 stops
DCA4:51 pmWashington, D.C. Reagan-National
$591
Find similar
British Airways
Nov 7
DCA2:00 pmWashington, D.C. Reagan-National
21h 00m
2 stops
OPO4:00 pmPorto
Nov 11
OPO12:25 pmPorto
26h 43m
2 stops
DCA10:08 amWashington, D.C. Reagan-National
$592
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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 August 24, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 10/22

12:59 pm-7:35 am

2 stops13h 36m

Porto

Wed 10/29

8:20 am-8:59 pm

2 stops16h 39m

$559

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 10/22

2:00 pm-11:20 am

2 stops16h 20m

Porto

Wed 10/29

12:35 pm-8:38 pm

1 stop12h 03m

$570

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sat 12/13

10:00 pm-4:40 pm

2 stops37h 40m

Porto

Wed 1/14

8:20 am-7:14 pm

2 stops15h 54m

$586

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Thu 11/6

10:15 pm-7:15 pm

2 stops40h 00m

Porto

Tue 11/11

12:25 pm-4:51 pm

2 stops33h 26m

$591

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Fri 11/7

6:00 am-11:10 am

2 stops24h 10m

Porto

Sat 11/15

6:00 am-8:40 pm

2 stops19h 40m

$602

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 10/7

6:00 am-11:30 am

2 stops24h 30m

Porto

Tue 10/14

11:05 am-10:20 am

2 stops28h 15m

$606

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 12/17

12:05 pm-10:30 am

2 stops17h 25m

Porto

Wed 12/24

11:25 am-10:50 pm

2 stops16h 25m

$610

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 12/15

5:00 pm-3:25 pm

2 stops17h 25m

Porto

Thu 1/8

11:15 am-6:06 pm

2 stops35h 51m

$622

Washington, D.C.Ponta Delgada

DCA - PDL

DCAPDL

Washington, D.C. Reagan-National

Mon 11/10

4:55 pm-6:35 pm

2 stops21h 40m

Ponta Delgada Nordela

Wed 11/19

9:30 am-2:59 pm

2 stops33h 29m

$802

Washington, D.C.Funchal

DCA - FNC

DCAFNC

Washington, D.C. Reagan-National

Thu 2/19

6:05 am-1:30 pm

2 stops26h 25m

Funchal Madeira

Tue 2/24

4:10 am-6:59 pm

2 stops19h 49m

$992

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 Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport is in January. Flight prices, which tend to average around $700, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Washington, D.C. Reagan-National Airport during November instead. Flights to Portugal in November, while not as cheap as those in January, still average around $797.

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 Washington, D.C. Reagan-National Airport. The lowest ticket price found for a Monday departure recently was $881. 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 $1,225.

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 in the evening. Flights from Washington, D.C. Reagan-National Airport to Portugal during this time can be as low as $1,008. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,302 per ticket.

Cheap Washington, D.C. Reagan-National Airport to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Portugal

Direct flights

None
There are no direct flights from Washington, D.C. Reagan-National Airport to Portugal. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Portugal.
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  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Portugal?

    Prices for flights from Washington, D.C. Reagan-National Airport to Portugal are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Portugal?

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Portugal?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Reagan-National Airport to Portugal.

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

    The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Washington, D.C. Reagan-National Airport to Portugal

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $520Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
TAP AIR PORTUGALPriceFrom $561Free CancellationRating
7.1
1,961 reviews
Search TAP AIR PORTUGAL flights
DeltaPriceFrom $600Free CancellationRating
7.9
7,980 reviews
Search Delta flights
LufthansaPriceFrom $968Free CancellationRating
6.8
7,351 reviews
Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Portugal?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Portugal. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Portugal with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Portugal?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Portugal.

I’m not ready to book a flight from Washington, D.C. to Portugal right now. Can momondo alert me if prices change?

Price alerts on flights to Portugal from Washington, D.C. 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.

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Find better results for your trip to Portugal

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