Cheap flights from Washington, D.C. Dulles Intl Airport to Lisbon from $245
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. Dulles Intl Airport to Lisbon departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Scandinavian Airlines flights from Washington, D.C. Dulles Intl Airport to Lisbon
Our best Scandinavian Airlines deals on Washington, D.C. Dulles Intl Airport to Lisbon flight tickets
TAP AIR PORTUGAL flights from Washington, D.C. Dulles Intl Airport to Lisbon
Our best TAP AIR PORTUGAL deals on Washington, D.C. Dulles Intl Airport to Lisbon flight tickets
See travel insights to Lisbon from
How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Lisbon
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 Lisbon?
In general, February is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $667. If you are unable to visit Lisbon during the month of February, then departing from Washington, D.C. Dulles Intl Airport during the month November is also very affordable. Most momondo users find prices during this month for around $711.
What is the cheapest day to depart on your flight to Lisbon?
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 $754. 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. Dulles Intl Airport to Lisbon for around $926.
What is the cheapest time of day to depart on your flight to Lisbon?
The cheapest time of day to fly to Lisbon is in the morning when flights can be purchased for as low as $775. 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. Dulles Intl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Washington, D.C. Dulles Intl to Lisbon Humberto Delgado flight route?
Fly from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado for the best Washington, D.C. Dulles Intl - Lisbon Humberto Delgado flight prices
How far in advance should I book a flight to Lisbon?
You are more likely to see cheaper flights to Lisbon from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $900 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. Dulles Intl Airport for as low as $760 on momondo.
What cabin class options are available on Washington, D.C. Dulles Intl to Lisbon Humberto Delgado flights?
There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl 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.
Can stopping save me money on Washington, D.C. Dulles Intl Airport to Lisbon flights?
No. A direct flight is the cheapest option for a flight between Washington, D.C. Dulles Intl Airport to Lisbon.
How have Washington, D.C. Dulles Intl Airport to Lisbon flight prices changed over time?
As of July 2025, prices for Washington, D.C. Dulles Intl Airport to Lisbon flights are approximately 37% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado?
TAP AIR PORTUGAL and Royal Air Maroc are the most popular carriers operating from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado
What airlines fly to Lisbon?
TAP AIR PORTUGAL, United Airlines and Royal Air Maroc are the top three most popular airlines that fly to Lisbon from Washington, D.C. Dulles Intl Airport according to our data. TAP AIR PORTUGAL is the first choice among our users, with 75% 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.
How many flights depart from Washington, D.C. Dulles Intl Airport to Lisbon on average per day?
4 flights are operational daily from Washington, D.C. Dulles Intl Airport to Lisbon as of July 2025. The most popular departure time for this route is 10:00PM, with 77% of flights per day taking off in the evening.
How many flights depart from Washington, D.C. Dulles Intl Airport to Lisbon on average per week?
As of July 2025, 31 flights take off from Washington, D.C. Dulles Intl Airport and land in Lisbon each week. The most common flight departure day for this route is Wed, with 23% of weekly flights taking off on this day.
When to book flights from Washington, D.C. Dulles Intl Airport to Lisbon
Cheap Washington, D.C. Dulles Intl Airport to Lisbon (IAD to LIS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Lisbon
How far is Washington, D.C. Dulles Intl to Lisbon Humberto Delgado by plane?
The straight-line distance from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado is 3581.5 mi. Typically, this will take 7h 05m by plane in normal conditions.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport?
As of July 2025, there are 13 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Lisbon?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. Dulles Intl Airport to Lisbon is Boeing 767-400 (43.34% of total bookings). The next most popular plane models are Airbus A321neo (30.58%), Boeing 767-300 (11.01%), and Boeing 777 (3.65%).
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to Lisbon is TAP AIR PORTUGAL (69% of total bookings). The next most popular airlines are United Airlines (18%), Royal Air Maroc (3%), and Lufthansa (2%).
Best airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon
Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Lisbon with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $333 | Free Cancellation | Rating 7.0 102 reviews | |||
| PriceFrom $508 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $508 | Free Cancellation | Rating 7.1 1,912 reviews | |||
| PriceFrom $510 | Free Cancellation | Rating 6.6 7,093 reviews | |||
| PriceFrom $552 | Free Cancellation | Rating 6.1 480 reviews | |||
| PriceFrom $554 | Free Cancellation | Rating 7.5 1,473 reviews | |||
| PriceFrom $563 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.3 3,895 reviews | |||
| PriceFrom $592 | Free Cancellation | Rating 7.0 2,819 reviews | |||
| PriceFrom $666 | Free Cancellation | Rating 7.1 1,144 reviews |
United Airlines Flights From Washington, D.C. Dulles Intl Airport to Lisbon
The lowest priced United Airlines flight from Washington, D.C. Dulles Intl Airport to Lisbon from the last 72 hours was $697. Generally, United Airlines has 5 flights on this route every week with an average price of $1,131. United Airlines is rated 7.4/10 by our users.
JetBlue Flights From Washington, D.C. Dulles Intl Airport to Lisbon
The best JetBlue deal for Washington, D.C. Dulles Intl Airport to Lisbon flight tickets found on momondo in the last 72 hours was $870, round-trip. It should be noted that an average JetBlue flight deal for this route in this time was higher, at $1,227 round-trip. JetBlue operates 8 flights out of Washington, D.C. Dulles Intl Airport into Lisbon in an average week, so prices vary by time and availability. 2,916 JetBlue reviews by users on momondo have scored the airline at 7.3/10.
Traveling to a place near Lisbon?
Book flights to Lisbon if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Lisbon?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Lisbon for you.
Can I find flights from Washington, D.C. to Lisbon with flexible booking policies on momondo?
Yes. All flights to Lisbon from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Washington, D.C. to Lisbon?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Lisbon.
I’m not ready to book a flight from Washington, D.C. to Lisbon right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Washington, D.C. to Lisbon now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Lisbon and let you know when they change.