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Cheap flights from Portugal to Washington, D.C. from $329

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 4/17. 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.

Enter your travel dates to find the best prices.
Delta Logo
11:55 am - 11:24 pm
LIS
-
DCA
16h 29m
2 stops
Delta Logo
11:00 am - 8:50 am
DCA
-
LIS
16h 50m
2 stops
$582Delta
Thu, May 21 - Wed, May 27
Delta Logo
11:15 am - 11:43 pm
OPO
-
DCA
17h 28m
2 stops
Delta Logo
6:30 pm - 3:25 pm
DCA
-
OPO
16h 55m
2 stops
$585Delta
Mon, Mar 2 - Mon, Mar 16
Delta Logo
10:00 am - 11:24 pm
LIS
-
DCA
18h 24m
1 stop
Delta Logo
11:00 am - 8:50 am
DCA
-
LIS
16h 50m
2 stops
$597Delta
Thu, May 21 - Wed, May 27
Air Canada Logo
6:00 am - 10:43 pm
OPO
-
DCA
21h 43m
2 stops
Air Canada Logo
11:05 am - 6:15 pm
DCA
-
OPO
26h 10m
2 stops
$605Air Canada
Wed, Apr 15 - Sun, Apr 19
Delta Logo
12:15 pm - 11:42 pm
LIS
-
DCA
16h 27m
2 stops
Delta Logo
5:00 pm - 2:55 pm
DCA
-
LIS
16h 55m
2 stops
$605Delta
Fri, May 15 - Mon, May 25
Air Canada Logo
6:00 am - 10:43 pm
OPO
-
DCA
21h 43m
2 stops
Air Canada Logo
6:00 am - 6:15 pm
DCA
-
OPO
31h 15m
2 stops
$607Air Canada
Wed, Apr 15 - Sun, Apr 19
United Airlines Logo
5:05 am - 5:25 pm
LIS
-
DCA
17h 20m
2 stops
United Airlines Logo
6:00 pm - 8:20 am
DCA
-
LIS
9h 20m
1 stop
$609United Airlines
Wed, Apr 22 - Sun, Apr 26
United Airlines Logo
5:05 am - 5:25 pm
LIS
-
DCA
17h 20m
2 stops
United Airlines Logo
6:00 pm - 8:20 am
DCA
-
LIS
9h 20m
1 stop
$610United Airlines
Wed, Apr 22 - Sun, Apr 26
American Airlines Logo
10:55 am - 8:37 pm
LIS
-
DCA
13h 42m
1 stop
American Airlines Logo
2:16 pm - 8:55 am
DCA
-
LIS
14h 39m
1 stop
$636American Airlines
Thu, Mar 12 - Wed, Mar 18
Multiple Airlines Logo
6:00 am - 8:53 am
OPO
-
DCA
31h 53m
2 stops
Multiple Airlines Logo
11:00 am - 5:35 pm
DCA
-
OPO
25h 35m
2 stops
$638Multiple Airlines
Tue, May 5 - Tue, May 12

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

Our best Delta deals on Portugal to Washington, D.C. Reagan-National Airport flight tickets
Delta
May 21
LIS11:55 amLisbon Humberto Delgado
16h 29m
2 stops
DCA11:24 pmWashington, D.C. Reagan-National
May 27
DCA11:00 amWashington, D.C. Reagan-National
16h 50m
2 stops
LIS8:50 amLisbon Humberto Delgado
$582
Delta
Mar 2
OPO11:15 amPorto
17h 28m
2 stops
DCA11:43 pmWashington, D.C. Reagan-National
Mar 16
DCA6:30 pmWashington, D.C. Reagan-National
16h 55m
2 stops
OPO3:25 pmPorto
$585
Delta
May 21
LIS10:00 amLisbon Humberto Delgado
18h 24m
1 stop
DCA11:24 pmWashington, D.C. Reagan-National
May 27
DCA11:00 amWashington, D.C. Reagan-National
16h 50m
2 stops
LIS8:50 amLisbon Humberto Delgado
$597

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

Our best Air Canada deals on Portugal to Washington, D.C. Reagan-National Airport flight tickets
Air Canada
Apr 15
OPO6:00 amPorto
21h 43m
2 stops
DCA10:43 pmWashington, D.C. Reagan-National
Apr 19
DCA11:05 amWashington, D.C. Reagan-National
26h 10m
2 stops
OPO6:15 pmPorto
$605
Air Canada
Apr 15
OPO6:00 amPorto
21h 43m
2 stops
DCA10:43 pmWashington, D.C. Reagan-National
Apr 19
DCA6:00 amWashington, D.C. Reagan-National
31h 15m
2 stops
OPO6:15 pmPorto
$607
Air Canada
Apr 15
OPO6:00 amPorto
18h 53m
2 stops
DCA7:53 pmWashington, D.C. Reagan-National
Apr 19
DCA6:00 amWashington, D.C. Reagan-National
31h 30m
2 stops
OPO6:30 pmPorto
$608

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 February 20, 2026.
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

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 5/21

11:55 am-11:24 pm

2 stops16h 29m

Washington, D.C. Reagan-National

Wed 5/27

11:00 am-8:50 am

2 stops16h 50m

$582

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 3/2

11:15 am-11:43 pm

2 stops17h 28m

Washington, D.C. Reagan-National

Mon 3/16

6:30 pm-3:25 pm

2 stops16h 55m

$585

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 5/21

10:00 am-11:24 pm

1 stop18h 24m

Washington, D.C. Reagan-National

Wed 5/27

11:00 am-8:50 am

2 stops16h 50m

$597

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 4/15

6:00 am-10:43 pm

2 stops21h 43m

Washington, D.C. Reagan-National

Sun 4/19

11:05 am-6:15 pm

2 stops26h 10m

$605

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Fri 5/15

12:15 pm-11:42 pm

2 stops16h 27m

Washington, D.C. Reagan-National

Mon 5/25

5:00 pm-2:55 pm

2 stops16h 55m

$605

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 4/15

6:00 am-10:43 pm

2 stops21h 43m

Washington, D.C. Reagan-National

Sun 4/19

6:00 am-6:15 pm

2 stops31h 15m

$607

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Wed 4/22

5:05 am-5:25 pm

2 stops17h 20m

Washington, D.C. Reagan-National

Sun 4/26

6:00 pm-8:20 am

1 stop9h 20m

$609

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Wed 4/22

5:05 am-5:25 pm

2 stops17h 20m

Washington, D.C. Reagan-National

Sun 4/26

6:00 pm-8:20 am

1 stop9h 20m

$610

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 3/12

10:55 am-8:37 pm

1 stop13h 42m

Washington, D.C. Reagan-National

Wed 3/18

2:16 pm-8:55 am

1 stop14h 39m

$636

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Tue 5/5

6:00 am-8:53 am

2 stops31h 53m

Washington, D.C. Reagan-National

Tue 5/12

11:00 am-5:35 pm

2 stops25h 35m

$638

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 29% 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

11h 27m

Direct flights

None
The fastest flight from Portugal to Washington, D.C. Reagan-National Airport takes 11h 27m
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.
Search flight deals

  • 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
Waldorf
Woodbridge
Colonial Beach
Laurel
Silver Spring
Tysons
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Fairfax
Bethesda
Linthicum Heights
College Park

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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