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Cheap flights from Portugal to District of Columbia from $387

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 5/12. 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
10:30 pm - 3:10 pm
OPO
-
IAD
21h 40m
1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 3:00 pm
IAD
-
OPO
11h 25m
1 stop
$549TAP AIR PORTUGAL
Mon, Apr 13 - Sun, Apr 26
TAP AIR PORTUGAL Logo
7:00 am - 3:10 pm
OPO
-
IAD
13h 10m
1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 8:25 pm
IAD
-
OPO
16h 50m
1 stop
$560TAP AIR PORTUGAL
Fri, Apr 17 - Sat, Apr 25
TAP AIR PORTUGAL Logo
7:00 am - 3:10 pm
OPO
-
IAD
13h 10m
1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 5:00 pm
IAD
-
OPO
13h 25m
1 stop
$570TAP AIR PORTUGAL
Fri, Apr 17 - Mon, Apr 27
Lufthansa Logo
5:05 am - 3:05 pm
LIS
-
IAD
15h 00m
1 stop
Lufthansa Logo
10:20 pm - 10:45 pm
IAD
-
LIS
19h 25m
1 stop
$626Lufthansa
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
6:00 am - 3:05 pm
OPO
-
IAD
14h 05m
1 stop
Multiple Airlines Logo
8:20 pm - 6:30 pm
IAD
-
OPO
17h 10m
1 stop
$631Multiple Airlines
Fri, Apr 17 - Fri, Apr 24
Lufthansa Logo
6:45 am - 4:05 pm
LIS
-
IAD
14h 20m
1 stop
Lufthansa Logo
10:20 pm - 10:45 pm
IAD
-
LIS
19h 25m
1 stop
$633Lufthansa
Wed, Apr 8 - Fri, Apr 24
Scandinavian Airlines Logo
5:00 pm - 5:00 pm
LIS
-
IAD
29h 00m
1 stop
Scandinavian Airlines Logo
8:20 pm - 3:35 pm
IAD
-
LIS
14h 15m
1 stop
$635Scandinavian Airlines
Tue, Apr 21 - Sun, Apr 26
Multiple Airlines Logo
10:10 am - 2:35 pm
OPO
-
IAD
33h 25m
1 stop
Multiple Airlines Logo
8:20 pm - 7:55 am
IAD
-
OPO
30h 35m
1 stop
$642Multiple Airlines
Mon, Apr 13 - Sun, Apr 26
United Airlines Logo
5:05 am - 3:15 pm
LIS
-
IAD
15h 10m
1 stop
United Airlines Logo
10:25 pm - 10:30 am
IAD
-
LIS
7h 05mnonstop
$645United Airlines
Tue, Aug 25 - Tue, Sep 8
United Airlines Logo
7:25 am - 7:55 pm
LIS
-
IAD
17h 30m
1 stop
United Airlines Logo
10:30 pm - 10:30 am
IAD
-
LIS
7h 00mnonstop
$648United Airlines
Fri, Apr 3 - Sun, Apr 12

Lufthansa flights from Portugal to District of Columbia

Our best Lufthansa deals on Portugal to District of Columbia flight tickets
Lufthansa
Apr 16
LIS5:05 amLisbon Humberto Delgado
15h 00m
1 stop
IAD3:05 pmWashington, D.C. Dulles Intl
Apr 23
IAD10:20 pmWashington, D.C. Dulles Intl
19h 25m
1 stop
LIS10:45 pmLisbon Humberto Delgado
$626
Lufthansa
Apr 8
LIS6:45 amLisbon Humberto Delgado
14h 20m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
Apr 24
IAD10:20 pmWashington, D.C. Dulles Intl
19h 25m
1 stop
LIS10:45 pmLisbon Humberto Delgado
$633
Lufthansa
Apr 3
LIS5:05 amLisbon Humberto Delgado
19h 50m
1 stop
IAD7:55 pmWashington, D.C. Dulles Intl
Apr 12
IAD10:30 pmWashington, D.C. Dulles Intl
7h 00m
LIS10:30 amLisbon Humberto Delgado
$638

SWISS flights from Portugal to District of Columbia

Our best SWISS deals on Portugal to District of Columbia flight tickets
SWISS
Apr 3
LIS6:15 pmLisbon Humberto Delgado
27h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
Apr 12
IAD8:20 pmWashington, D.C. Dulles Intl
22h 05m
1 stop
LIS11:25 pmLisbon Humberto Delgado
$644
SWISS
May 19
OPO8:40 amPorto
13h 05m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
Jun 9
IAD8:20 pmWashington, D.C. Dulles Intl
30h 35m
1 stop
OPO7:55 amPorto
$657
SWISS
May 19
OPO12:15 pmPorto
33h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
Jun 9
IAD8:20 pmWashington, D.C. Dulles Intl
30h 35m
1 stop
OPO7:55 amPorto
$666

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 March 22, 2026.
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

Cheapest round-trip

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 4/13

10:30 pm-3:10 pm

1 stop21h 40m

Washington, D.C. Dulles Intl

Sun 4/26

10:35 pm-3:00 pm

1 stop11h 25m

$549

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 4/17

7:00 am-3:10 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Sat 4/25

10:35 pm-8:25 pm

1 stop16h 50m

$560

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 4/17

7:00 am-3:10 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Mon 4/27

10:35 pm-5:00 pm

1 stop13h 25m

$570

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 4/16

5:05 am-3:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Thu 4/23

10:20 pm-10:45 pm

1 stop19h 25m

$626

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 4/17

6:00 am-3:05 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Fri 4/24

8:20 pm-6:30 pm

1 stop17h 10m

$631

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 4/8

6:45 am-4:05 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Fri 4/24

10:20 pm-10:45 pm

1 stop19h 25m

$633

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 4/21

5:00 pm-5:00 pm

1 stop29h 00m

Washington, D.C. Dulles Intl

Sun 4/26

8:20 pm-3:35 pm

1 stop14h 15m

$635

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 4/13

10:10 am-2:35 pm

1 stop33h 25m

Washington, D.C. Dulles Intl

Sun 4/26

8:20 pm-7:55 am

1 stop30h 35m

$642
Quickest round-trip

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 8/25

5:05 am-3:15 pm

1 stop15h 10m

Washington, D.C. Dulles Intl

Tue 9/8

10:25 pm-10:30 am

Nonstop7h 05m

$645

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 4/3

7:25 am-7:55 pm

1 stop17h 30m

Washington, D.C. Dulles Intl

Sun 4/12

10:30 pm-10:30 am

Nonstop7h 00m

$648

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 $524. If you don’t want to visit District of Columbia in September, then you should wait until January to fly from Portugal, when ticket prices are also cheap, with an average price of $602.

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 Sunday when prices can be found for as low as $670. 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 $1,005.

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 $855. 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 22% 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

$596

Fastest flight time

7h 55m

Direct flights

Every day

Airports in District of Columbia

2 airports
The best one-way flight to District of Columbia from Portugal in the past 72 hours is $596. The best round-trip flight deal from Portugal to District of Columbia found on momondo in the last 72 hours is $798.
The fastest flight from Portugal to District of Columbia takes 7h 55m
Direct flights go from Portugal to District of Columbia every day.
There are 2 airports in District of Columbia. From Portugal there are direct flights to Washington, D.C. Dulles Intl (IAD).
Search flight deals

  • 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 $492Free CancellationRating
7.1
2,172 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom $497Free CancellationRating
7.4
9,455 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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