Question 1

Which airport is the most popular layover for flights between Washington, D.C. and Lisbon?

Accepted Answer

Casablanca (CMN) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Question 2

What is the cheapest month to fly to Lisbon?

Accepted Answer

In general, February is the cheapest month to fly from Washington, D.C. to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $705. If you are unable to visit Lisbon during the month of February, then departing from Washington, D.C. during the month January is also very affordable. Most momondo users find prices during this month for around $758.

Question 3

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

Accepted Answer

Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $711. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Lisbon for around $876.

Question 4

What is the cheapest Washington, D.C. to Lisbon Humberto Delgado flight route?

Accepted Answer

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

Question 5

How have Washington, D.C. to Lisbon flight prices changed over time?

Accepted Answer

As of December 2025, prices for Washington, D.C. to Lisbon flights are approximately 45% more expensive when compared to flights at the same time last year.

Question 6

What airlines fly to Lisbon?

Accepted Answer

TAP AIR PORTUGAL, United Airlines and Royal Air Maroc are the top three most popular airlines that fly to Lisbon from Washington, D.C. according to our data. TAP AIR PORTUGAL is the first choice among our users, with 76% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 13 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Question 7

Can stopping save me money on Washington, D.C. to Lisbon flights?

Accepted Answer

You could potentially save up to 13% on your flight if you consider stops on a Washington, D.C. to Lisbon flight.

Question 8

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

Accepted Answer

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.

Question 9

How many flights depart from Washington, D.C. to Lisbon on average per week?

Accepted Answer

As of December 2025, there are 35 flights per week flying from Washington, D.C. to Lisbon. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

Question 10

Which layover airport offers the lowest fares from Washington, D.C. to Lisbon?

Accepted Answer

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $379.

Question 11

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

Accepted Answer

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.

Question 12

Which layover airport has the shortest travel time from Washington, D.C. to Lisbon?

Accepted Answer

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 10h 29m.

Question 13

How long does it take to fly to Lisbon?

Accepted Answer

Average flight duration from Washington, D.C. to Lisbon depends on which airport you fly into and out of. Flying from Washington, D.C. to Lisbon is 9h 17m on average, while flying from Baltimore to Lisbon is 10h 19m on average. Lisbon is the most popular airport in Lisbon.

Question 14

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

Accepted Answer

The cheapest time of day to fly to Lisbon is in the afternoon when flights can be purchased for as low as $758. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $867 on average. Flights to Lisbon from Washington, D.C. at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Question 15

What is the typical price of a round-trip flight between Washington, D.C. and Lisbon?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from $832 to $1,546.
The lowest price recently found on this route was $532.

Question 16

Which layover airport has the shortest connection time from Washington, D.C. to Lisbon?

Accepted Answer

Paris (CDG) has the shortest average layover time for this route: 1h 10m.

Question 17

How many flights depart from Washington, D.C. to Lisbon on average per day?

Accepted Answer

5 flights are operational daily from Washington, D.C. to Lisbon as of December 2025. The most popular departure time for this route is 10:00PM, with 77% of flights per day taking off in the evening.

Question 18

What cabin class options are available on Washington, D.C. to Lisbon Humberto Delgado flights?

Accepted Answer

There are 3 cabin classes available to choose from on Washington, D.C. to Lisbon Humberto Delgado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 19

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

Accepted Answer

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

Question 20

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

Accepted Answer

You are more likely to see cheaper flights to Lisbon from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $906 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Washington, D.C. for as low as $747 on momondo.

Question 21

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

Accepted Answer

Historically, on average around 28% of flights between Washington, D.C. and Lisbon have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

Question 22

When did momondo last update prices for flights from Washington, D.C. to Lisbon Humberto Delgado Airport?

Accepted Answer

Prices for flights from Washington, D.C. to Lisbon Humberto Delgado Airport were last updated today.

Question 23

How many operators does momondo search for flights from Washington, D.C. to Lisbon Humberto Delgado Airport?

Accepted Answer

As of December 2025, there are 13 operators available to choose from for flights from Washington, D.C. to Lisbon Humberto Delgado Airport.

Question 24

How old do you have to be to fly from Washington, D.C. to Lisbon Humberto Delgado Airport?

Accepted Answer

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 Washington, D.C. to Lisbon Humberto Delgado Airport.

Question 25

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

Accepted Answer

The required travel and health documents for your Lisbon Humberto Delgado 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 Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best Price Found	$372
Fastest flight time	7h 05m
Direct flights	Every day
Airports in Lisbon	1 airport

Airline	Rating	Free Cancellation	Price
PLAY	PriceFrom $345	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $504	Free Cancellation	Rating 7.4 1,617 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom $506	Free Cancellation	Rating 7.2 2,094 reviews	Search TAP AIR PORTUGAL flights
American Airlines	PriceFrom $508	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 7,602 reviews	Search British Airways flights
Royal Air Maroc	PriceFrom $551	Free Cancellation	Rating 6.2 541 reviews	Search Royal Air Maroc flights
Delta	PriceFrom $563	Free Cancellation	Rating 7.9 8,013 reviews	Search Delta flights
Turkish Airlines	PriceFrom $585	Free Cancellation	Rating 7.3 4,106 reviews	Search Turkish Airlines flights
Iberia	PriceFrom $592	Free Cancellation	Rating 7.0 3,055 reviews	Search Iberia flights
Aer Lingus	PriceFrom $666	Free Cancellation	Rating 7.2 1,408 reviews	Search Aer Lingus flights

Cheap flights from Washington, D.C. to Lisbon from $246

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Lisbon departing on 1/19. 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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