S$499 Cheap Flights from Washington to Lisbon

View S$499 flight on Wed, 15 Oct, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Humberto Delgado Airport (LIS)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Washington to Lisbon (IAD-LIS)

Prices were available within the past 7 days and start at S$499 for one-way flights and S$1,079 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,079 Return, found 22 hours ago
S$1,079
Return
found 22 hours ago
Select British Airways flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,079 found 22 hours ago
Royal Air Maroc
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,227 Return, found 22 hours ago
S$1,227
Return
found 22 hours ago
Select Royal Air Maroc flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,227 found 22 hours ago
Royal Air Maroc
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,250 Return, found 22 hours ago
S$1,250
Return
found 22 hours ago
Select Royal Air Maroc flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,250 found 22 hours ago
Royal Air Maroc
Sat, 6 Sep - Fri, 12 Sep
IAD
Washington
LIS
Lisbon
S$1,268 Return, found 3 days ago
S$1,268
Return
found 3 days ago
Select Royal Air Maroc flight, departing Sat, 6 Sep from Washington to Lisbon, returning Fri, 12 Sep, priced at S$1,268 found 3 days ago
Air Canada
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,272 Return, found 22 hours ago
S$1,272
Return
found 22 hours ago
Select Air Canada flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,272 found 22 hours ago
United
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,286 Return, found 22 hours ago
S$1,286
Return
found 22 hours ago
Select United flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,286 found 22 hours ago
Royal Air Maroc
Sat, 6 Sep - Fri, 12 Sep
IAD
Washington
LIS
Lisbon
S$1,291 Return, found 3 days ago
S$1,291
Return
found 3 days ago
Select Royal Air Maroc flight, departing Sat, 6 Sep from Washington to Lisbon, returning Fri, 12 Sep, priced at S$1,291 found 3 days ago
British Airways
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,293 Return, found 22 hours ago
S$1,293
Return
found 22 hours ago
Select British Airways flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,293 found 22 hours ago
Air Canada
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,294 Return, found 22 hours ago
S$1,294
Return
found 22 hours ago
Select Air Canada flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,294 found 22 hours ago
Swiss International Air Lines
Wed, 15 Oct - Sun, 26 Oct
IAD
Washington
LIS
Lisbon
S$1,320 Return, found 22 hours ago
S$1,320
Return
found 22 hours ago
Select Swiss International Air Lines flight, departing Wed, 15 Oct from Washington to Lisbon, returning Sun, 26 Oct, priced at S$1,320 found 22 hours ago

Find the cheapest month to fly from Washington (IAD) to Lisbon (LIS)

November is typically the cheapest month to fly

From S$575 - S$1,222 per traveller.

Graph displaying average flight prices per month

Washington to Lisbon route information
Origin airport
Washington Dulles Intl.
Destination airport
Humberto Delgado
Airlines serving
Aer Lingus, Air Canada, Air France, British Airways, Delta, Iberia, KLM, Lufthansa, Swiss International Air Lines, United
Return price
S$1,078
Distance
5732 km
Average flight time
12 hours 18 mins

Perfect flights from Washington to Lisbon

Your Journey from Washington to Lisbon

Start your unforgettable journey with Expedia. Our broad selection of flights from Washington to Lisbon caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Royal Air Maroc, Delta, British Airways, United, Air Canada, Air France, Swiss International Air Lines, Lufthansa. Our selection of flights from Washington Dulles Intl. to Humberto Delgado caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Washington to Lisbon Flights

Experience the joy of finding cheap flights from Washington Dulles Intl. to Humberto Delgado that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$499 and roundtrip prices from S$1,079*.
 

Pre-Flight Essentials

Ensure a smooth journey from Washington to Lisbon with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Lisbon

Picture yourself stepping off the plane in Lisbon and immersing yourself in the unique atmosphere of Lisbon District. From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Washington to Lisbon Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to Lisbon.
 

Beyond the Flight – Exploring Lisbon

With Expedia, your adventure extends beyond the flight. Explore Lisbon at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Washington to Lisbon with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Washington to Lisbon with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from IAD to LIS?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from IAD to Lisbon/Portela Airport was S$1,079. Fares this good don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to Humberto Delgado Airport (LIS)?
This differs from airline to airline, as each has its own set of terms and conditions. Visit the Customer Service Portal, where you'll find simple instructions on how to cancel online.
How do I find cheap flights from Dulles Intl. Airport to Humberto Delgado Airport (LIS) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for IAD to LIS flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Lisbon/Portela Airport?
You'll have 5,800 kilometres to cover on the long-haul Chantilly to Lisbon District route. Dress in layers of comfortable clothes and consider taking a pair of noise-cancelling earphones.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Humberto Delgado Airport (LIS)?
Flying directly from IAD to LIS is simple with TAP Portugal (TP). This popular airline operates 30 flights every month.
Are Dulles Intl. Airport to Lisbon Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so there are no guarantees. While last-minute flight deals between IAD and Humberto Delgado Airport (LIS) are possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some airlines advertise their prices up to a year ahead of the departure date. Expedia is continuously updating the best airfare bargains around, so keep checking back and be ready to lock in your seat when fare prices drop.

Explore a world of travel with Expedia

*Available to Expedia members.