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Cheap flights from Portugal to Washington, D.C. from $462

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Washington, D.C. departing on 1/13. 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 Portugal to Washington, D.C.

Recent round-trip flight deals from Portugal to Washington, D.C.

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Air Canada Logo
6:00 am - 8:55 am
OPO
-
DCA
31h 55m2 stops
Air Canada Logo
4:15 pm - 11:10 am
DCA
-
OPO
37h 55m2 stops
$590Air Canada
Thu, Jan 15 - Wed, Jan 28
United Airlines Logo
6:00 am - 6:05 pm
OPO
-
DCA
41h 05m2 stops
United Airlines Logo
6:00 pm - 9:30 am
DCA
-
OPO
11h 30m1 stop
$593United Airlines
Thu, Mar 5 - Mon, Mar 9
Air Canada Logo
6:00 am - 7:45 pm
OPO
-
DCA
42h 45m2 stops
Air Canada Logo
6:00 am - 12:50 pm
DCA
-
OPO
26h 50m2 stops
$599Air Canada
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
5:00 am - 7:35 pm
LIS
-
DCA
18h 35m2 stops
United Airlines Logo
4:30 pm - 8:10 am
DCA
-
LIS
11h 40m1 stop
$599United Airlines
Thu, Mar 12 - Mon, Mar 16
Air Canada Logo
6:00 am - 8:55 am
OPO
-
DCA
31h 55m2 stops
Air Canada Logo
6:00 am - 12:50 pm
DCA
-
OPO
26h 50m2 stops
$600Air Canada
Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
6:00 am - 8:55 am
OPO
-
DCA
31h 55m2 stops
Multiple Airlines Logo
6:50 pm - 3:25 pm
DCA
-
OPO
15h 35m2 stops
$604Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Delta Logo
5:00 am - 5:53 pm
LIS
-
DCA
17h 53m2 stops
Delta Logo
5:00 pm - 3:10 pm
DCA
-
LIS
17h 10m2 stops
$609Delta
Thu, Jan 15 - Wed, Jan 28
Delta Logo
5:30 am - 4:29 pm
LIS
-
DCA
15h 59m2 stops
Delta Logo
5:00 pm - 3:10 pm
DCA
-
LIS
17h 10m2 stops
$611Delta
Thu, Jan 15 - Wed, Jan 28
American Airlines Logo
8:20 am - 9:50 am
LIS
-
DCA
29h 30m2 stops
American Airlines Logo
6:14 pm - 2:55 pm
DCA
-
LIS
16h 41m2 stops
$612American Airlines
Thu, Mar 12 - Mon, Mar 16
Multiple Airlines Logo
8:45 am - 8:55 am
OPO
-
DCA
29h 10m3 stops
Multiple Airlines Logo
4:15 pm - 5:35 pm
DCA
-
OPO
20h 20m2 stops
$768Multiple Airlines
Thu, Jan 15 - Wed, Jan 28

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

Our best KLM deals on Portugal to Washington, D.C. Reagan-National Airport flight tickets
KLM
Dec 26
LIS10:55 amLisbon Humberto Delgado
12h 24m
1 stop
DCA6:19 pmWashington, D.C. Reagan-National
Jan 11
DCA6:00 amWashington, D.C. Reagan-National
21h 00m
1 stop
LIS8:00 amLisbon Humberto Delgado
$619
Find similar
KLM
Dec 26
LIS10:55 amLisbon Humberto Delgado
12h 24m
1 stop
DCA6:19 pmWashington, D.C. Reagan-National
Jan 10
DCA6:00 amWashington, D.C. Reagan-National
21h 00m
1 stop
LIS8:00 amLisbon Humberto Delgado
$643
Find similar
KLM
Dec 27
LIS11:15 amLisbon Humberto Delgado
12h 04m
1 stop
DCA6:19 pmWashington, D.C. Reagan-National
Jan 11
DCA6:00 amWashington, D.C. Reagan-National
21h 00m
1 stop
LIS8:00 amLisbon Humberto Delgado
$727
Find similar

TAP AIR PORTUGAL flights from Portugal to Washington, D.C. Reagan-National Airport

Our best TAP AIR PORTUGAL deals on Portugal to Washington, D.C. Reagan-National Airport flight tickets
TAP AIR PORTUGAL
Dec 15
OPO6:40 pmPorto
18h 49m
1 stop
DCA8:29 amWashington, D.C. Reagan-National
Dec 31
DCA2:00 pmWashington, D.C. Reagan-National
15h 15m
2 stops
OPO10:15 amPorto
$1,078
Find similar
TAP AIR PORTUGAL
Dec 15
OPO6:40 pmPorto
18h 49m
1 stop
DCA8:29 amWashington, D.C. Reagan-National
Dec 31
DCA8:10 pmWashington, D.C. Reagan-National
10h 45m
1 stop
OPO11:55 amPorto
$1,123
Find similar
TAP AIR PORTUGAL
Jan 8
OPO8:00 pmPorto
27h 49m
2 stops
DCA6:49 pmWashington, D.C. Reagan-National
Jan 15
DCA12:59 pmWashington, D.C. Reagan-National
17h 51m
1 stop
OPO11:50 amPorto
$1,233
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to Washington, D.C. Reagan-National Airport 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 December 11, 2025.
Use the filters below to find and compare flights from Portugal to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 1/15

6:00 am-8:55 am

2 stops31h 55m

Washington, D.C. Reagan-National

Wed 1/28

4:15 pm-11:10 am

2 stops37h 55m

$590

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 3/5

6:00 am-6:05 pm

2 stops41h 05m

Washington, D.C. Reagan-National

Mon 3/9

6:00 pm-9:30 am

1 stop11h 30m

$593

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 3/5

6:00 am-7:45 pm

2 stops42h 45m

Washington, D.C. Reagan-National

Mon 3/9

6:00 am-12:50 pm

2 stops26h 50m

$599

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 3/12

5:00 am-7:35 pm

2 stops18h 35m

Washington, D.C. Reagan-National

Mon 3/16

4:30 pm-8:10 am

1 stop11h 40m

$599

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 3/5

6:00 am-8:55 am

2 stops31h 55m

Washington, D.C. Reagan-National

Mon 3/9

6:00 am-12:50 pm

2 stops26h 50m

$600

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 1/15

6:00 am-8:55 am

2 stops31h 55m

Washington, D.C. Reagan-National

Wed 1/28

6:50 pm-3:25 pm

2 stops15h 35m

$604

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 1/15

5:00 am-5:53 pm

2 stops17h 53m

Washington, D.C. Reagan-National

Wed 1/28

5:00 pm-3:10 pm

2 stops17h 10m

$609

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 1/15

5:30 am-4:29 pm

2 stops15h 59m

Washington, D.C. Reagan-National

Wed 1/28

5:00 pm-3:10 pm

2 stops17h 10m

$611

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 3/12

8:20 am-9:50 am

2 stops29h 30m

Washington, D.C. Reagan-National

Mon 3/16

6:14 pm-2:55 pm

2 stops16h 41m

$612

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 1/15

8:45 am-8:55 am

3 stops29h 10m

Washington, D.C. Reagan-National

Wed 1/28

4:15 pm-5:35 pm

2 stops20h 20m

$768

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Portugal to Washington, D.C. Reagan-National Airport

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

Can stopping save me money on Portugal to Washington, D.C. Reagan-National Airport flights?

You could potentially save up to 40% on your flight if you consider stops on a Portugal to Washington, D.C. Reagan-National Airport flight.

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

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

Fastest flight time

10h 55m

Direct flights

None
The fastest flight from Portugal to Washington, D.C. Reagan-National Airport takes 10h 55m
There are no direct flights from Portugal to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Portugal to Washington, D.C. Reagan-National Airport.
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  • When did momondo last update prices for flights from Portugal to Washington, D.C. Reagan-National Airport?

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

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

    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 Portugal to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The required travel and health documents for your Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Gaithersburg
Reston
Manassas
Fairfax
Glen Burnie
Linthicum Heights
Springfield

Why use momondo?

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

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

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

Yes. All flights to Washington, D.C. from Portugal on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Washington, D.C. from Portugal. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Portugal to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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