Cheap flights from Lisbon to Washington, D.C. from $390
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Lisbon to Washington, D.C. departing on 9/28. 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 Lisbon to Washington, D.C.
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Delta flights from Lisbon to Washington, D.C. Dulles Intl Airport
Our best Delta deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines flights from Lisbon to Washington, D.C. Dulles Intl Airport
Our best American Airlines deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Lisbon to Washington, D.C. Dulles Intl Airport
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 Washington, D.C. Dulles Intl Airport?
In general, November is the cheapest month to fly from Lisbon to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $568. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $600.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $732. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Lisbon to Washington, D.C. Dulles Intl Airport for around $881.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from Lisbon 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. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $788 on average. Flights to Washington, D.C. Dulles Intl Airport from Lisbon in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Lisbon Humberto Delgado to Washington, D.C. Dulles Intl flight route?
Fly from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl for the best Lisbon Humberto Delgado - Washington, D.C. Dulles Intl flight prices
How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?
You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Lisbon when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $712 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Lisbon for as low as $581 on momondo.
What cabin class options are available on Lisbon Humberto Delgado to Washington, D.C. Dulles Intl flights?
There are 3 cabin classes available to choose from on Lisbon Humberto Delgado to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from Lisbon to Washington, D.C. Dulles Intl Airport on average per day?
As of June 2025, there are 6 flights per day flying from Lisbon to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 12:00PM, with 100% of flights taking off in the afternoon.
How many flights depart from Lisbon to Washington, D.C. Dulles Intl Airport on average per week?
As of June 2025, there are 42 flights per week flying from Lisbon to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.
When to book flights from Lisbon to Washington, D.C. Dulles Intl Airport
Cheap Lisbon to Washington, D.C. Dulles Intl Airport (LIS to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Lisbon to Washington, D.C. Dulles Intl Airport
How far is Lisbon Humberto Delgado to Washington, D.C. Dulles Intl by plane?
A flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl will travel around 3581.5 mi. A reasonable flight in good conditions will take 8h 15m.
When did momondo last update prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport are updated daily.
How many operators does momondo search for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport?
As of June 2025, there are 2 operators available to choose from for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Lisbon to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Lisbon to Washington, D.C. Dulles Intl Airport is Boeing 767-400 (40.58% of total bookings). The next most popular plane models are Airbus A321neo (26.94%), Airbus A321-100/200 (12.60%), and Boeing 767-300 (7.17%).
What is the most popular airline from Lisbon to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Lisbon and Washington, D.C. Dulles Intl Airport, the leading airline is TAP AIR PORTUGAL, making up 57% of the total bookings. Other popular airlines include United Airlines with 43%.
Best airlines flying from Lisbon to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Lisbon to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $534 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $548 | Free Cancellation | Rating 7.1 1,885 reviews |
United Airlines Flights From Lisbon to Washington, D.C. Dulles Intl Airport
United Airlines flies from Lisbon to Washington, D.C. Dulles Intl Airport around 6 times per week, with 8,790 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Lisbon to Washington, D.C. Dulles Intl Airport in the last 72 hours was $534 (round-trip), much lower than the average airfare cost of $636 for United Airlines flights on this route.
TAP AIR PORTUGAL Flights From Lisbon to Washington, D.C. Dulles Intl Airport
Across 1,885 TAP AIR PORTUGAL reviews on momondo, the average score is 7.1/10. TAP AIR PORTUGAL flies from Lisbon to Washington, D.C. Dulles Intl Airport about 12 times each week, with ticket deals ranging from $548 to $734. Price data is based on momondo searches in the last 72 hours.
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Lisbon to Washington, D.C.?
Finding the right flight to Washington, D.C. from Lisbon is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.
Can I find flights from Lisbon to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Washington, D.C. from Lisbon with this policy.
How can momondo help me find flights from Lisbon to Washington, D.C.?
Once all potential Lisbon to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Lisbon to Washington, D.C. right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Washington, D.C. from Lisbon. 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.