What airlines fly to Portugal?

TAP AIR PORTUGAL, United Airlines and Lufthansa are the top three most popular airlines that fly to Portugal from Washington, D.C. Dulles Intl Airport according to our data. TAP AIR PORTUGAL is the first choice among our users, with 78% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 14 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

How often are flights from Washington, D.C. to Portugal delayed?

Historically, on average around 28% of flights between Washington, D.C. and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

What is the most punctual flight time for Washington, D.C. to Portugal flights?

Generally, flights departing in the evening tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Portugal?

Royal Air Maroc, TAP AIR PORTUGAL, and KLM are the most popular carriers operating from Washington, D.C. Dulles Intl to Portugal

Which airline has the best punctuality record on Washington, D.C. to Portugal flights?

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 26% of their flights experiencing any sort of delay.

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Portugal?

Prices for flights from Washington, D.C. Dulles Intl Airport to Portugal are refreshed on a daily basis.

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Portugal?

As of February 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Portugal.

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Portugal?

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 Washington, D.C. Dulles Intl Airport to Portugal.

What documentation or ID do you need to fly to Portugal?

The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$270 Cheap Flights from Washington, D.C. Dulles Intl Airport to Portugal in 2026

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average per day?

The number of flights available between Washington, D.C. Dulles Intl Airport and Portugal is 1 per day as of February 2026. The most frequent departure time is 5:00PM, with 60% of daily flights leaving in the afternoon.

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average per week?

As of February 2026, 12 flights take off from Washington, D.C. Dulles Intl Airport and land in Portugal each week. The most common flight departure day for this route is Tue, with 17% of weekly flights taking off on this day.

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Portugal

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:35 pm - 5:20 pm

IAD

FAO

13h 45m

1 stop

6:10 pm - 3:05 pm

FAO

IAD

25h 55m

1 stop

$391TAP AIR PORTUGAL

Mon, Apr 13 - Wed, Apr 22

5:30 pm - 11:00 am

IAD

OPO

12h 30m

1 stop

6:55 am - 2:35 pm

OPO

IAD

12h 40m

1 stop

$461TAP AIR PORTUGAL

Tue, Feb 24 - Tue, Mar 3

8:20 pm - 3:35 pm

IAD

LIS

14h 15m

1 stop

4:25 pm - 4:50 pm

LIS

IAD

29h 25m

1 stop

$509Scandinavian Airlines

Mon, Apr 6 - Tue, Apr 14

8:20 pm - 3:35 pm

IAD

LIS

14h 15m

1 stop

4:25 pm - 4:50 pm

LIS

IAD

29h 25m

1 stop

$513Scandinavian Airlines

Mon, Apr 6 - Wed, Apr 15

9:00 pm - 5:40 pm

IAD

LIS

15h 40m

1 stop

12:50 pm - 7:00 pm

LIS

IAD

11h 10m

1 stop

$531Royal Air Maroc

Mon, Apr 20 - Mon, Apr 27

9:00 pm - 5:40 pm

IAD

LIS

15h 40m

1 stop

12:50 pm - 7:00 pm

LIS

IAD

11h 10m

1 stop

$532Royal Air Maroc

Mon, Apr 13 - Mon, Apr 20

7:05 pm - 6:05 pm

IAD

FAO

19h 00m

1 stop

7:45 pm - 5:05 pm

FAO

IAD

25h 20m

1 stop

$533KLM

Tue, Mar 17 - Tue, Mar 24

7:05 pm - 6:05 pm

IAD

FAO

19h 00m

1 stop

10:20 am - 5:05 pm

FAO

IAD

34h 45m

1 stop

$535KLM

Tue, Mar 17 - Wed, Mar 25

12:45 pm - 10:05 pm

IAD

LIS

28h 20m

2 stops

4:25 pm - 4:50 pm

LIS

IAD

29h 25m

1 stop

$548Multiple Airlines

Tue, Apr 28 - Tue, May 12

9:55 am - 11:05 pm

IAD

FNC

33h 10m

3 stops

12:05 pm - 4:50 pm

FNC

IAD

32h 45m

2 stops

$685Multiple Airlines

Tue, Mar 17 - Tue, Mar 24

Royal Air Maroc flights from Washington, D.C. Dulles Intl Airport to Portugal

Our best Royal Air Maroc deals on Washington, D.C. Dulles Intl Airport to Portugal flight tickets

Royal Air Maroc

Apr 20

IAD9:00 pmWashington, D.C. Dulles Intl

15h 40m

1 stop

LIS5:40 pmLisbon Humberto Delgado

Apr 27

LIS12:50 pmLisbon Humberto Delgado

11h 10m

1 stop

IAD7:00 pmWashington, D.C. Dulles Intl

$531

Royal Air Maroc

Feb 8

IAD8:45 pmWashington, D.C. Dulles Intl

9h 50m

1 stop

LIS11:35 amLisbon Humberto Delgado

Feb 17

LIS5:55 pmLisbon Humberto Delgado

29h 50m

1 stop

IAD6:45 pmWashington, D.C. Dulles Intl

$546

Royal Air Maroc

Apr 26

IAD9:00 pmWashington, D.C. Dulles Intl

15h 40m

1 stop

LIS5:40 pmLisbon Humberto Delgado

May 4

LIS12:50 pmLisbon Humberto Delgado

11h 10m

1 stop

IAD7:00 pmWashington, D.C. Dulles Intl

$549

Scandinavian Airlines flights from Washington, D.C. Dulles Intl Airport to Portugal

Our best Scandinavian Airlines deals on Washington, D.C. Dulles Intl Airport to Portugal flight tickets

Scandinavian Airlines

Apr 20

IAD8:20 pmWashington, D.C. Dulles Intl

14h 15m

1 stop

LIS3:35 pmLisbon Humberto Delgado

Apr 29

LIS4:25 pmLisbon Humberto Delgado

29h 25m

1 stop

IAD4:50 pmWashington, D.C. Dulles Intl

$520

Scandinavian Airlines

Apr 19

IAD8:20 pmWashington, D.C. Dulles Intl

32h 20m

1 stop

FAO9:40 amFaro

Apr 25

FAO7:35 pmFaro

26h 15m

2 stops

IAD4:50 pmWashington, D.C. Dulles Intl

$531

Scandinavian Airlines

Mar 7

IAD8:30 pmWashington, D.C. Dulles Intl

15h 40m

1 stop

LIS5:10 pmLisbon Humberto Delgado

Mar 15

LIS6:00 pmLisbon Humberto Delgado

28h 15m

1 stop

IAD6:15 pmWashington, D.C. Dulles Intl

$534

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Mon 4/13

10:35 pm-5:20 pm

1 stop13h 45m

Faro

Wed 4/22

6:10 pm-3:05 pm

1 stop25h 55m

$391

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/24

5:30 pm-11:00 am

1 stop12h 30m

Porto

Tue 3/3

6:55 am-2:35 pm

1 stop12h 40m

$461

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 4/6

8:20 pm-3:35 pm

1 stop14h 15m

Lisbon Humberto Delgado

Tue 4/14

4:25 pm-4:50 pm

1 stop29h 25m

$509

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 4/6

8:20 pm-3:35 pm

1 stop14h 15m

Lisbon Humberto Delgado

Wed 4/15

4:25 pm-4:50 pm

1 stop29h 25m

$513

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 4/20

9:00 pm-5:40 pm

1 stop15h 40m

Lisbon Humberto Delgado

Mon 4/27

12:50 pm-7:00 pm

1 stop11h 10m

$531

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 4/13

9:00 pm-5:40 pm

1 stop15h 40m

Lisbon Humberto Delgado

Mon 4/20

12:50 pm-7:00 pm

1 stop11h 10m

$532

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 3/17

7:05 pm-6:05 pm

1 stop19h 00m

Faro

Tue 3/24

7:45 pm-5:05 pm

1 stop25h 20m

$533

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 3/17

7:05 pm-6:05 pm

1 stop19h 00m

Faro

Wed 3/25

10:20 am-5:05 pm

1 stop34h 45m

$535

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 4/28

12:45 pm-10:05 pm

2 stops28h 20m

Lisbon Humberto Delgado

Tue 5/12

4:25 pm-4:50 pm

1 stop29h 25m

$548

Washington, D.C.Funchal

IAD - FNC

IADFNC

Washington, D.C. Dulles Intl

Tue 3/17

9:55 am-11:05 pm

3 stops33h 10m

Funchal Madeira

Tue 3/24

12:05 pm-4:50 pm

2 stops32h 45m

$685

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Portugal

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

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Washington, D.C. Dulles Intl Airport is in January. Flight prices, which tend to average around $663, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Washington, D.C. Dulles Intl Airport during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $718.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Monday is the cheapest day to fly to Portugal from Washington, D.C. Dulles Intl Airport. The lowest ticket price found for a Monday departure recently was $693. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $854.

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

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from Washington, D.C. Dulles Intl Airport to Portugal during this time can be as low as $740. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $814 per ticket.

What is the cheapest Washington, D.C. Dulles Intl to Portugal flight route?

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

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $909 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Washington, D.C. Dulles Intl Airport for as low as $751 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Portugal flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl to Portugal 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 Washington, D.C. Dulles Intl Airport to Portugal flights?

You could potentially save up to 31% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Portugal flight.

Cheap Washington, D.C. Dulles Intl Airport to Portugal flight deals and tips

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

Best Price Found	$388
Fastest flight time	7h 05m
Direct flights	Every day
Airports in Portugal	99 airports

The best one-way flight to Portugal from Washington, D.C. Dulles Intl Airport in the past 72 hours is $388. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Portugal found on momondo in the last 72 hours is $540.

The fastest flight from Washington, D.C. Dulles Intl Airport to Portugal takes 7h 05m

Direct flights go from Washington, D.C. Dulles Intl Airport to Portugal every day.

There are 99 airports in Portugal. From Washington, D.C. Dulles Intl Airport there are direct flights to Lisbon Humberto Delgado (LIS).

Search flight deals

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Portugal?
Prices for flights from Washington, D.C. Dulles Intl Airport to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Portugal?
As of February 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Portugal.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Portugal?
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 Washington, D.C. Dulles Intl Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Portugal?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. Dulles Intl Airport to Portugal is Boeing 767-400, representing 24.41% of all bookings. The subsequent popular models are Boeing 777 at 19.13%, Airbus A321neo at 18.77%, and Boeing 767-300 at 9.52%.

Best airlines flying from Washington, D.C. Dulles Intl Airport to Portugal

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Portugal with momondo

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $437	Free Cancellation	Rating 7.1 2,133 reviews	Search TAP AIR PORTUGAL flights
Delta	PriceFrom $439	Free Cancellation	Rating 7.9 8,129 reviews	Search Delta flights
SWISS	PriceFrom $444	Free Cancellation	Rating 7.6 1,864 reviews	Search SWISS flights
KLM	PriceFrom $477	Free Cancellation	Rating 7.7 1,446 reviews	Search KLM flights
British Airways	PriceFrom $480	Free Cancellation	Rating 6.7 7,709 reviews	Search British Airways flights
Scandinavian Airlines	PriceFrom $481	Free Cancellation	Rating 7.3 1,676 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom $494	Free Cancellation	Rating 7.4 9,226 reviews	Search United Airlines flights
American Airlines	PriceFrom $508	Free Cancellation	Rating 7.2 11,211 reviews	Search American Airlines flights
Lufthansa	PriceFrom $514	Free Cancellation	Rating 6.8 7,758 reviews	Search Lufthansa flights
Iberia	PriceFrom $515	Free Cancellation	Rating 7.0 3,100 reviews	Search Iberia flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portugal from Washington, D.C..

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

Yes. momondo allows you to filter the results for Washington, D.C. to Portugal flights to just show those with flexible booking policies.

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

Once you have performed a search for Washington, D.C. to Portugal 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 Washington, D.C. to Portugal right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Portugal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in Portugal

Flights to Lisbonfrom $367

Flights to Portofrom $350

Flights to Funchalfrom $377

Flights to Farofrom $373

Flights to Ponta Delgadafrom $392

Flights to Lajesfrom $391

Flights to Hortafrom $559

Flights to Pico Islandfrom $587

Flights to Porto Santofrom $392

Flights to Velasfrom $588

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Cheap flights from Washington, D.C. Dulles Intl Airport to Portugal from $270

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Royal Air Maroc flights from Washington, D.C. Dulles Intl Airport to Portugal

Our best Royal Air Maroc deals on Washington, D.C. Dulles Intl Airport to Portugal flight tickets

Scandinavian Airlines flights from Washington, D.C. Dulles Intl Airport to Portugal

Our best Scandinavian Airlines deals on Washington, D.C. Dulles Intl Airport to Portugal flight tickets

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Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Portugal that are best for you.

See travel insights to Portugal from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Portugal

What is the cheapest month to fly to Portugal?

What is the cheapest day to depart on your flight to Portugal?

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

What is the cheapest Washington, D.C. Dulles Intl to Portugal flight route?

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

How far in advance should I book a flight to Portugal?

What cabin class options are available on Washington, D.C. Dulles Intl to Portugal flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl to Portugal 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 Washington, D.C. Dulles Intl Airport to Portugal flights?

You could potentially save up to 31% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Portugal flight.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Portugal?

Royal Air Maroc, TAP AIR PORTUGAL, and KLM are the most popular carriers operating from Washington, D.C. Dulles Intl to Portugal

What airlines fly to Portugal?

How often are flights from Washington, D.C. to Portugal delayed?

Historically, on average around 28% of flights between Washington, D.C. and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

What is the most punctual flight time for Washington, D.C. to Portugal flights?

Generally, flights departing in the evening tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Washington, D.C. to Portugal flights?

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 26% of their flights experiencing any sort of delay.

How many flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average per day?

The number of flights available between Washington, D.C. Dulles Intl Airport and Portugal is 1 per day as of February 2026. The most frequent departure time is 5:00PM, with 60% of daily flights leaving in the afternoon.

How many flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average per week?

As of February 2026, 12 flights take off from Washington, D.C. Dulles Intl Airport and land in Portugal each week. The most common flight departure day for this route is Tue, with 17% of weekly flights taking off on this day.

Cheap Washington, D.C. Dulles Intl Airport to Portugal flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Portugal

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Portugal?

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Portugal?

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Portugal?

What documentation or ID do you need to fly to Portugal?

What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Portugal?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Portugal

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Portugal with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo