Cheap flights from Portugal to District of Columbia from $338

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 District of Columbia departing on 12/23. 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 Portugal to District of Columbia

Recent round-trip flight deals from Portugal to District of Columbia

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
5:55 pm - 2:35 pmOPO-IAD
25h 40m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 5:00 pmIAD-OPO
13h 30m1 stop
$485TAP AIR PORTUGAL
Find Deal
Mon, Nov 3 - Sun, Nov 16
TAP AIR PORTUGAL Logo
8:00 pm - 2:35 pmOPO-IAD
23h 35m1 stop
TAP AIR PORTUGAL Logo
5:30 pm - 10:10 amIAD-OPO
11h 40m1 stop
$500TAP AIR PORTUGAL
Find Deal
Mon, Nov 3 - Tue, Nov 18
Delta Logo
5:00 am - 4:05 pmLIS-IAD
16h 05m1 stop
Delta Logo
6:50 pm - 3:10 pmIAD-LIS
15h 20m1 stop
$568Delta
Find Deal
Fri, Nov 7 - Sun, Nov 23
Delta Logo
11:25 am - 7:15 pmOPO-IAD
12h 50m1 stop
Delta Logo
12:11 pm - 10:30 amIAD-OPO
17h 19m2 stops
$571Delta
Find Deal
Tue, Nov 4 - Thu, Nov 20
Lufthansa Logo
5:00 am - 2:35 pmLIS-IAD
14h 35m1 stop
Lufthansa Logo
10:55 pm - 11:30 pmIAD-LIS
19h 35m1 stop
$582Lufthansa
Find Deal
Thu, Nov 6 - Wed, Nov 19
United Airlines Logo
6:00 am - 3:05 pmOPO-IAD
14h 05m1 stop
United Airlines Logo
5:20 pm - 9:45 amIAD-OPO
11h 25m1 stop
$586United Airlines
Find Deal
Wed, Apr 1 - Sun, Apr 5
Lufthansa Logo
6:00 am - 3:50 pmOPO-IAD
14h 50m1 stop
Lufthansa Logo
6:00 pm - 11:40 amIAD-OPO
12h 40m1 stop
$592Lufthansa
Find Deal
Fri, Feb 13 - Fri, Feb 20
United Airlines Logo
5:00 am - 3:50 pmLIS-IAD
15h 50m1 stop
United Airlines Logo
10:05 pm - 10:15 amIAD-LIS
7h 10mnonstop
$593United Airlines
Find Deal
Tue, Nov 18 - Mon, Dec 8
British Airways Logo
7:00 am - 3:35 pmLIS-IAD
13h 35m1 stop
British Airways Logo
6:20 pm - 12:05 pmIAD-LIS
12h 45m1 stop
$595British Airways
Find Deal
Thu, Jan 8 - Mon, Jan 12
British Airways Logo
10:55 am - 8:58 pmLIS-DCA
15h 03m1 stop
British Airways Logo
1:44 pm - 8:55 amDCA-LIS
14h 11m1 stop
$649British Airways
Find Deal
Thu, Nov 6 - Wed, Nov 19

Air France flights from Portugal to District of Columbia

Our best Air France deals on Portugal to District of Columbia flight tickets
Air France
Oct 30
OPO11:20 amPorto
12h 55m
1 stop
IAD8:15 pmWashington, D.C. Dulles Intl
Nov 2
IAD9:25 pmWashington, D.C. Dulles Intl
32h 05m
1 stop
OPO10:30 amPorto
Air France
Oct 29
LIS6:30 pmLisbon Humberto Delgado
27h 05m
1 stop
IAD5:35 pmWashington, D.C. Dulles Intl
Nov 5
IAD9:25 pmWashington, D.C. Dulles Intl
15h 05m
1 stop
LIS5:30 pmLisbon Humberto Delgado
Air France
Oct 27
LIS6:30 pmLisbon Humberto Delgado
27h 05m
1 stop
IAD5:35 pmWashington, D.C. Dulles Intl
Nov 3
IAD6:50 pmWashington, D.C. Dulles Intl
11h 30m
1 stop
LIS11:20 amLisbon Humberto Delgado

TAP AIR PORTUGAL flights from Portugal to District of Columbia

Our best TAP AIR PORTUGAL deals on Portugal to District of Columbia flight tickets
TAP AIR PORTUGAL
Nov 3
OPO5:55 pmPorto
25h 40m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Nov 16
IAD10:30 pmWashington, D.C. Dulles Intl
13h 30m
1 stop
OPO5:00 pmPorto
TAP AIR PORTUGAL
Nov 3
OPO8:00 pmPorto
23h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Nov 18
IAD5:30 pmWashington, D.C. Dulles Intl
11h 40m
1 stop
OPO10:10 amPorto
TAP AIR PORTUGAL
Nov 3
OPO8:00 pmPorto
23h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Nov 18
IAD5:30 pmWashington, D.C. Dulles Intl
11h 40m
1 stop
OPO10:10 amPorto

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to District of Columbia 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 October 14, 2025.
Use the filters below to find and compare flights from Portugal to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 11/3

5:55 pm-2:35 pm

1 stop25h 40m

Washington, D.C. Dulles Intl

Sun 11/16

10:30 pm-5:00 pm

1 stop13h 30m

$485

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 11/3

8:00 pm-2:35 pm

1 stop23h 35m

Washington, D.C. Dulles Intl

Tue 11/18

5:30 pm-10:10 am

1 stop11h 40m

$500

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 11/7

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sun 11/23

6:50 pm-3:10 pm

1 stop15h 20m

$568

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 11/4

11:25 am-7:15 pm

1 stop12h 50m

Washington, D.C. Dulles Intl

Thu 11/20

12:11 pm-10:30 am

2 stops17h 19m

$571

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 11/6

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 11/19

10:55 pm-11:30 pm

1 stop19h 35m

$582

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 4/1

6:00 am-3:05 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Sun 4/5

5:20 pm-9:45 am

1 stop11h 25m

$586

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 2/13

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Fri 2/20

6:00 pm-11:40 am

1 stop12h 40m

$592

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 11/18

5:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Mon 12/8

10:05 pm-10:15 am

Nonstop7h 10m

$593

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/8

7:00 am-3:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Mon 1/12

6:20 pm-12:05 pm

1 stop12h 45m

$595

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Thu 11/6

10:55 am-8:58 pm

1 stop15h 03m

Washington, D.C. Reagan-National

Wed 11/19

1:44 pm-8:55 am

1 stop14h 11m

$649

Flights are sorted by cheapest round-trip flights first.

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See travel insights to District of Columbia from

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

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 District of Columbia?

In general, September is the cheapest month to fly from Portugal to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $537. If you don’t want to visit District of Columbia in September, then you should wait until February to fly from Portugal, when ticket prices are also cheap, with an average price of $558.

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Wednesday when prices can be found for as low as $710. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Portugal because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $882.

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

Flying to District of Columbia from Portugal at noon is the least expensive time of day to depart. momondo users have found prices as low as $484 when looking at flights departing at noon. Flights to District of Columbia are more costly in the morning, with an average ticket price of $787. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to District of Columbia?

You are more likely to see cheaper flights to District of Columbia from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $728 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Portugal for as low as $581 on momondo.

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

There are 3 cabin classes available to choose from on Portugal to District of Columbia 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 Portugal to District of Columbia flights?

You could potentially save up to 1% on your flight if you consider stops on a Portugal to District of Columbia flight.

Cheap Portugal to District of Columbia flight deals and tips

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

Best Price Found

$545

Fastest flight time

8h 20m

Direct flights

Every day

Airports in District of Columbia

1 airport
The best one-way flight to District of Columbia from Portugal in the past 72 hours is $545. The best round-trip flight deal from Portugal to District of Columbia found on momondo in the last 72 hours is $690.
The fastest flight from Portugal to District of Columbia takes 8h 20m
Direct flights go from Portugal to District of Columbia every day.
There is 1 airport near District of Columbia: Washington, D.C. Dulles Intl (IAD)
  • When did momondo last update prices for flights from Portugal to District of Columbia?

    Prices for flights from Portugal to District of Columbia were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to District of Columbia.

  • What documentation or ID do you need to fly to District of Columbia?

    The required travel and health documents for your District of Columbia 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 District of Columbia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Portugal to District of Columbia

Compare and see reviews for airlines that fly from Portugal to District of Columbia with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $480Free CancellationRating
7.1
2,015 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $493Free CancellationRating
6.7
7,456 reviews
Search British Airways flights
United AirlinesPriceFrom $534Free CancellationRating
7.4
8,976 reviews
Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portugal to District of Columbia. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Portugal to District of Columbia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Portugal to District of Columbia 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 Portugal to District of Columbia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to District of Columbia from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Thu 11/13
Thu 11/20

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