$353 Cheap Flights from Washington to Lisbon

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Find The Best Dates To Fly from Washington Dulles Intl. to Humberto Delgado

Amazing IAD to LIS Flight Deals

The cheapest flights to Humberto Delgado found within the past 7 days were $359 round trip and $353 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for IAD to LIS

CarrierFlightDepart IADArrive LISWed
TP23410:00 pm10:15 amCheck Fare
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UA94210:20 pm10:40 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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TP23205:35 pm05:50 am
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Frequently asked questions

Can I catch a flight from IAD to LIS right now?
Make sure you check out the Covid-19 Travel Advisor to discover if there are any current quarantine requirements and travel advice reports in effect in Lisbon/Portela Airport when flying from IAD.
Are there direct flights from IAD to Lisbon/Portela Airport?
If you’re eager to fly directly from Dulles Intl. Airport to Humberto Delgado Airport (LIS), try TAP Air Portugal. This airline will be perfect for you if you prefer to travel from A to B with minimum fuss.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to LIS, please visit our Customer Service Portal.
How long is the flight from Washington Dulles Intl. Airport (IAD) to Humberto Delgado Airport (LIS)?
It’s a good idea to hop up and walk around during your flight from IAD to Humberto Delgado Airport (LIS). You’ll be in the air for 11 hours and 2 minutes, so stretching your muscles will keep you comfortable during this lengthy journey.
What is the flight distance from Dulles Intl. Airport to Lisbon Airport?
With 3,600 mi separating Sterling and Lisbon District, you’ll have ample time to kick back and unwind. Make use of the entertainment on board, finish a crossword or have a snooze.
What airlines fly from Dulles Intl. Airport to Lisbon Airport?
Hoping to fly nonstop from Sterling to Lisbon District? You’re in luck. TAP Air Portugal offers as many as 30 flights per month and is the number one choice for many well-traveled wanderers.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with TAP Air Portugal, Ryanair or EasyJet you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From Washington Dulles Intl.
Traveling To Humberto Delgado
Shortest Flight Time 17 hours 15 mins
Earliest Departure Time 5:35PM WEST
Latest Departure Time 10:20PM WEST
Lowest Flight Price $359

Route Info

Flight path for flights from Washington Dulles International Airport to Lisbon Portela Airport.

4,651.00 miles

Discover our best flights from Washington IAD to Lisbon LIS. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from Washington IAD to Lisbon LIS at the right price  

Airfares to Lisbon LIS from Washington IAD currently cost between $359 and $479. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from Washington IAD to Lisbon LIS 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Washington IAD to Lisbon LIS on Travelocity starting at $353. Prices and availability subject to change. Additional terms may apply. 


Get to Lisbon LIS from Washington IAD quicker with direct flights. 

Get to Lisbon faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to LIS from IAD to take around 17 hour(s) 15 min(s).  


Find our cheapest airfares for flights from Washington IAD to Lisbon LIS

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to LIS from IAD. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from Washington IAD to Lisbon LIS today 

If you’re flexible about when you travel, March is usually the cheapest month to fly from Washington IAD to Lisbon LIS. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to Lisbon LIS from Washington IAD 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to LIS from IAD have this option.  


Travel with confidence when you book flights to Lisbon LIS from Washington IAD with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.