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 3/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Lufthansa Logo
5:00 am - 2:35 pm
LIS
-
IAD
14h 35m1 stop
Lufthansa Logo
5:40 pm - 1:20 pm
IAD
-
LIS
14h 40m1 stop
$486Lufthansa
Thu, Jan 15 - Wed, Jan 28
Lufthansa Logo
5:00 am - 2:35 pm
LIS
-
IAD
14h 35m1 stop
Lufthansa Logo
5:40 pm - 1:20 pm
IAD
-
LIS
14h 40m1 stop
$493Lufthansa
Thu, Jan 15 - Wed, Jan 28
Lufthansa Logo
5:00 am - 2:35 pm
LIS
-
IAD
14h 35m1 stop
Lufthansa Logo
5:40 pm - 1:20 pm
IAD
-
LIS
14h 40m1 stop
$494Lufthansa
Thu, Jan 15 - Wed, Jan 28
United Airlines Logo
6:00 am - 2:35 pm
OPO
-
IAD
13h 35m1 stop
United Airlines Logo
5:35 pm - 9:30 am
IAD
-
OPO
11h 55m1 stop
$502United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
6:00 am - 8:15 pm
OPO
-
IAD
19h 15m1 stop
United Airlines Logo
6:00 pm - 11:40 am
IAD
-
OPO
12h 40m1 stop
$507United Airlines
Thu, Jan 15 - Wed, Jan 28
American Airlines Logo
8:20 am - 4:30 pm
LIS
-
IAD
13h 10m1 stop
American Airlines Logo
6:20 pm - 9:50 pm
IAD
-
LIS
22h 30m1 stop
$507American Airlines
Thu, Jan 15 - Wed, Jan 28
American Airlines Logo
8:20 am - 4:30 pm
OPO
-
IAD
13h 10m1 stop
American Airlines Logo
10:45 pm - 7:40 am
IAD
-
OPO
28h 55m2 stops
$513American Airlines
Thu, Mar 5 - Mon, Mar 9
British Airways Logo
11:15 am - 8:48 pm
LIS
-
DCA
13h 33m1 stop
British Airways Logo
10:30 pm - 11:00 pm
DCA
-
LIS
19h 30m2 stops
$516British Airways
Wed, Mar 11 - Thu, Apr 2
TAP AIR PORTUGAL Logo
9:00 am - 3:15 pm
OPO
-
IAD
11h 15m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 9:55 am
IAD
-
OPO
30h 25m1 stop
$518TAP AIR PORTUGAL
Thu, Jan 15 - Wed, Jan 28
TAP AIR PORTUGAL Logo
7:00 am - 6:55 pm
OPO
-
DCA
16h 55m2 stops
TAP AIR PORTUGAL Logo
8:10 pm - 11:50 am
DCA
-
OPO
11h 40m1 stop
$1,101TAP AIR PORTUGAL
Thu, Mar 5 - Mon, Mar 9

Lufthansa flights from Portugal to District of Columbia

Our best Lufthansa deals on Portugal to District of Columbia flight tickets
Lufthansa
Jan 15
LIS5:00 amLisbon Humberto Delgado
14h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Jan 28
IAD5:40 pmWashington, D.C. Dulles Intl
14h 40m
1 stop
LIS1:20 pmLisbon Humberto Delgado
Lufthansa
Jan 15
LIS5:00 amLisbon Humberto Delgado
14h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Jan 28
IAD5:40 pmWashington, D.C. Dulles Intl
14h 40m
1 stop
LIS1:20 pmLisbon Humberto Delgado
Lufthansa
Jan 15
LIS5:00 amLisbon Humberto Delgado
14h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Jan 28
IAD5:40 pmWashington, D.C. Dulles Intl
14h 40m
1 stop
LIS1:20 pmLisbon Humberto Delgado

United Airlines flights from Portugal to District of Columbia

Our best United Airlines deals on Portugal to District of Columbia flight tickets
United Airlines
Mar 5
OPO6:00 amPorto
13h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Mar 9
IAD5:35 pmWashington, D.C. Dulles Intl
11h 55m
1 stop
OPO9:30 amPorto
United Airlines
Jan 15
OPO6:00 amPorto
19h 15m
1 stop
IAD8:15 pmWashington, D.C. Dulles Intl
Jan 28
IAD6:00 pmWashington, D.C. Dulles Intl
12h 40m
1 stop
OPO11:40 amPorto
United Airlines
Jan 15
LIS5:00 amLisbon Humberto Delgado
20h 15m
1 stop
IAD8:15 pmWashington, D.C. Dulles Intl
Jan 28
IAD5:38 pmWashington, D.C. Dulles Intl
9h 32m
1 stop
LIS8:10 amLisbon Humberto Delgado

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 December 4, 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

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/15

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 1/28

5:40 pm-1:20 pm

1 stop14h 40m

$486

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/15

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 1/28

5:40 pm-1:20 pm

1 stop14h 40m

$493

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/15

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 1/28

5:40 pm-1:20 pm

1 stop14h 40m

$494

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 3/5

6:00 am-2:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Mon 3/9

5:35 pm-9:30 am

1 stop11h 55m

$502

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 1/15

6:00 am-8:15 pm

1 stop19h 15m

Washington, D.C. Dulles Intl

Wed 1/28

6:00 pm-11:40 am

1 stop12h 40m

$507

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/15

8:20 am-4:30 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Wed 1/28

6:20 pm-9:50 pm

1 stop22h 30m

$507

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 3/5

8:20 am-4:30 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Mon 3/9

10:45 pm-7:40 am

2 stops28h 55m

$513

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Wed 3/11

11:15 am-8:48 pm

1 stop13h 33m

Washington, D.C. Reagan-National

Thu 4/2

10:30 pm-11:00 pm

2 stops19h 30m

$516

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 1/15

9:00 am-3:15 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Wed 1/28

10:30 pm-9:55 am

1 stop30h 25m

$518

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 3/5

7:00 am-6:55 pm

2 stops16h 55m

Washington, D.C. Reagan-National

Mon 3/9

8:10 pm-11:50 am

1 stop11h 40m

$1,101

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 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 $556.

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 $712. 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 $903.

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 $812. 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

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 20% 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

$593

Fastest flight time

8h 15m

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 $593. The best round-trip flight deal from Portugal to District of Columbia found on momondo in the last 72 hours is $817.
The fastest flight from Portugal to District of Columbia takes 8h 15m
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
2,081 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $493Free CancellationRating
6.7
7,559 reviews
Search British Airways flights
United AirlinesPriceFrom $573Free CancellationRating
7.4
9,063 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
Sat 1/3
Sat 1/10

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