What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon round-trip?

Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Lisbon round-trip from $682. Other airlines that can offer you cheap pricing are Aer Lingus, from $728, and Turkish Airlines, from $777. Royal Air Maroc is currently priced 24% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Lisbon one-way?

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $390. However, be on the lookout for offers from Royal Air Maroc and JetBlue, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Lisbon for a low price.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Lisbon?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Lisbon flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon?

The cheapest flight price from Washington, D.C. Dulles Intl Airport to Lisbon is $275. On average you can expect to pay $1,713. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $510.

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?

The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Lisbon are TAP AIR PORTUGAL (83%), JetBlue (78%) and Air Canada (69%).

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Lisbon?

When booking a flight from Washington, D.C. Dulles Intl Airport to Lisbon, you may want to consider flying on American Airlines, Air France or Royal Air Maroc as they are the most popular for this route.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Lisbon?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 20% when planning your travel around this day of the week.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Lisbon?

February is one of the best times of the year to fly to Lisbon from Washington, D.C. Dulles Intl Airport. Prices for February average $914 per person but you can even find prices for as low as $349. The most expensive prices can be found in the month of December. Opting for a February flight can save you 41% on your journey compared to booking in December

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-Lisbon flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Lisbon flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?

Most people fly into Lisbon Humberto Delgado (LIS) if they book a flight to Lisbon from Washington, D.C. Dulles Intl. On average, Humberto Delgado has 5 inbound flights from Washington, D.C. Dulles Intl per day from 13 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.

Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?

Yes. In addition to deals on Dulles Intl to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to Lisbon?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Lisbon.

Can I find deals for business class flights from Dulles Intl to Lisbon?

Yes. Cheapflights offers flight deals from Dulles Intl to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$371+ Flights from Washington, D.C. Dulles Intl Airport to Lisbon

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Dulles Intl to Lisbon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in February or November, booked 49 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from Dulles Intl to Lisbon

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$682 (oojo)
One-way from	$390 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$881
Good round-trip deal	$606 or less
Good one-way deal	$375 or less

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Lisbon Humberto Delgado flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Lisbon Humberto Delgado flights.

Search Deals

From Washington, D.C. Dulles Intl to Lisbon Humberto Delgado

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($211 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado.

Search Deals

Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado.

Search Deals

Find flight deals from Dulles Intl to Lisbon

Cheapest flights from Dulles Intl to Lisbon
Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 28, 2025.

mar. 11/258:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

lun. 12/14:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 4/28

$473

jue. 10/235:50 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

jue. 10/3011:25 amLIS - IAD

Nonstop8h 50mTAP AIR PORTUGAL

Deal found 4/28

$514

dom. 11/98:30 pmIAD - LIS

1 stop14h 35mMultiple Airlines

mar. 11/186:10 pmLIS - IAD

2 stops28h 05mMultiple Airlines

Deal found 4/27

$565

vie. 11/78:40 pmIAD - LIS

1 stop9h 55mRoyal Air Maroc

mar. 11/115:55 pmLIS - IAD

1 stop29h 45mRoyal Air Maroc

Deal found 4/27

$594

jue. 10/91:30 pmIAD - LIS

1 stop29h 05mTurkish Airlines

mar. 10/145:55 amLIS - IAD

1 stop18h 50mTurkish Airlines

Deal found 4/27

$676

sáb. 9/68:30 pmIAD - LIS

1 stop19h 50mIcelandair

jue. 9/1110:20 pmLIS - IAD

1 stop26h 00mIcelandair

Deal found 4/27

$749

lun. 7/148:25 pmIAD - LIS

1 stop20h 10mAer Lingus

mié. 7/2310:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 4/28

$759

Best flights from Dulles Intl to Lisbon
Discover carefully curated flight deals from Dulles Intl to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 28, 2025.

mié. 5/149:05 pmIAD - LIS

1 stop19h 00mRoyal Air Maroc

lun. 6/21:15 pmLIS - IAD

1 stop10h 50mRoyal Air Maroc

Deal found 4/28

$682

lun. 6/94:20 pmIAD - LIS

2 stops33h 10mMultiple Airlines

lun. 6/168:15 amLIS - IAD

2 stops35h 51mMultiple Airlines

Deal found 4/28

$705

mar. 5/69:00 pmIAD - LIS

1 stop19h 35mAer Lingus

mié. 5/1410:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 4/27

$728

mié. 7/231:30 pmIAD - LIS

1 stop20h 45mTurkish Airlines

jue. 8/710:55 amLIS - IAD

1 stop29h 50mTurkish Airlines

Deal found 4/28

$777

mar. 6/34:20 pmIAD - LIS

2 stops33h 10mPorter Airlines

lun. 6/98:15 amLIS - IAD

2 stops35h 51mPorter Airlines

Deal found 4/28

$794

lun. 6/25:12 pmIAD - LIS

2 stops35h 08mAir Canada

lun. 6/911:25 amLIS - IAD

2 stops27h 16mAir Canada

Deal found 4/28

$835

mar. 5/610:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

jue. 5/1512:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/27

$868

Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated abril 28, 2025 and is based on user searches.

sáb. 5/38:30 pmIAD - LIS

1 stop19h 50mIcelandair

jue. 5/810:20 pmLIS - IAD

1 stop26h 00mIcelandair

Deal found 4/28

$1,033

mar. 5/69:00 pmIAD - LIS

1 stop19h 35mAer Lingus

mié. 5/1410:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 4/27

$728

mar. 5/64:30 pmIAD - LIS

2 stops25h 35mMultiple Airlines

lun. 5/1210:45 pmLIS - IAD

2 stops20h 55mMultiple Airlines

Deal found 4/26

$735

mar. 5/610:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

jue. 5/1512:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/27

$868

mié. 5/79:05 pmIAD - LIS

1 stop19h 00mRoyal Air Maroc

dom. 5/186:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 4/27

$760

lun. 5/121:30 pmIAD - LIS

2 stops42h 55mTurkish Airlines

mar. 5/272:40 pmLIS - IAD

2 stops26h 05mTurkish Airlines

Deal found 4/26

$881

mié. 5/149:05 pmIAD - LIS

1 stop19h 00mRoyal Air Maroc

lun. 6/21:15 pmLIS - IAD

1 stop10h 50mRoyal Air Maroc

Deal found 4/28

$682

lun. 5/264:20 pmIAD - LIS

2 stops33h 10mPorter Airlines

lun. 6/28:15 amLIS - IAD

2 stops35h 51mPorter Airlines

Deal found 4/28

$803

One-way flights from Dulles Intl to Lisbon
Search for one-way flight options from Dulles Intl to Lisbon. Find affordable one-way fares based on user searches. Data last updated abril 28, 2025.

lun. 7/75:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 4/28

$390

dom. 6/229:57 pmIAD - LIS

2 stops39h 48mMultiple Airlines

Deal found 4/27

$391

mié. 5/79:05 pmIAD - LIS

1 stop19h 00mRoyal Air Maroc

Deal found 4/28

$392

sáb. 7/55:00 pmIAD - LIS

Nonstop7h 20mJetBlue

Deal found 4/27

$547

lun. 5/1910:05 pmIAD - LIS

2 stops19h 00mScandinavian Airlines

Deal found 4/28

$661

dom. 7/205:20 pmIAD - LIS

1 stop12h 25mAer Lingus

Deal found 4/28

$678

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

dom. 10/19

10:05 pm-3:45 pm

1 stop12h 40m

Lisbon Humberto Delgado

lun. 10/27

4:55 pm-6:15 pm

1 stop29h 20m

$511

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 10/23

5:50 pm-6:10 am

Nonstop7h 20m

Lisbon Humberto Delgado

jue. 10/30

11:25 am-4:15 pm

Nonstop8h 50m

$514

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mié. 9/24

9:05 pm-9:05 pm

1 stop19h 00m

Lisbon Humberto Delgado

jue. 10/2

10:05 pm-7:05 pm

1 stop26h 00m

$594

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mié. 10/8

10:05 pm-10:05 pm

2 stops43h 00m

Lisbon Humberto Delgado

mié. 10/15

7:15 am-7:59 pm

1 stop17h 44m

$633

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 10/9

1:30 pm-11:35 pm

1 stop29h 05m

Lisbon Humberto Delgado

mar. 10/14

5:55 am-7:45 pm

1 stop18h 50m

$676

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

sáb. 9/6

8:30 pm-9:20 pm

1 stop19h 50m

Lisbon Humberto Delgado

jue. 9/11

10:20 pm-7:20 pm

1 stop26h 00m

$749

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

lun. 7/14

8:25 pm-9:35 pm

1 stop20h 10m

Lisbon Humberto Delgado

mié. 7/23

10:15 pm-6:55 pm

1 stop25h 40m

$759

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mar. 6/3

4:20 pm-6:30 am

2 stops33h 10m

Lisbon Humberto Delgado

lun. 6/9

8:15 am-3:06 pm

2 stops35h 51m

$794

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 9/25

8:30 pm-9:05 pm

2 stops19h 35m

$371

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

dom. 10/12

9:05 pm-12:15 pm

1 stop10h 10m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 15 results

Compare providers for flights from Dulles Intl to Lisbon

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Lisbon in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightsMojo	Price Accuracy-	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-Lisbon flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Lisbon flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Washington, D.C. Dulles Intl Airport to Lisbon flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Lisbon trip

Airports

IAD

For evening departures, expect crowded check-in areas at IAD. Arrive early to navigate the busy terminals smoothly.

LIS

Upon arrival at LIS, use the metro line for a quick 20-minute ride to downtown Lisbon from Terminal 1.

Our travel experts

Ramsey Qubein

Expert on LIS and IAD

Best time to book a flight from Dulles Intl to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Dulles Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Lisbon

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $612). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to LIS?

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Lisbon at noon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Lisbon

The most flights from IAD to LIS are scheduled on a Thursday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Lisbon

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Porter Airlines

8.0

Very good

285 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

JetBlue

7.3

Good

2,922 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Turkish Airlines

7.3

Good

3,785 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Scandinavian Airlines

7.3

Good

1,349 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

TAP AIR PORTUGAL

7.1

Good

1,850 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Related info for your journey

What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?
Most people fly into Lisbon Humberto Delgado (LIS) if they book a flight to Lisbon from Washington, D.C. Dulles Intl. On average, Humberto Delgado has 5 inbound flights from Washington, D.C. Dulles Intl per day from 13 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon round-trip?
Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Lisbon round-trip from $682. Other airlines that can offer you cheap pricing are Aer Lingus, from $728, and Turkish Airlines, from $777. Royal Air Maroc is currently priced 24% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Lisbon one-way?
The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $390. However, be on the lookout for offers from Royal Air Maroc and JetBlue, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Lisbon for a low price.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?
The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Lisbon are TAP AIR PORTUGAL (83%), JetBlue (78%) and Air Canada (69%).
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon?
The cheapest flight price from Washington, D.C. Dulles Intl Airport to Lisbon is $275. On average you can expect to pay $1,713. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $510.
Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Lisbon?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Lisbon.
Can I find deals for business class flights from Dulles Intl to Lisbon?
Yes. Cheapflights offers flight deals from Dulles Intl to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $612). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Sintra

Beja

Nazaré

Costa da Caparica

Evora

Torres Vedras

Oeiras

Sesimbra

Fátima

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Lisbon

Reagan-National to Lisbon flights

Baltimore to Lisbon flights

Dulles Intl to Porto flights

Reagan-National to Porto flights

Baltimore to Porto flights

Dulles Intl to Faro flights

Dulles Intl to Funchal flights

Dulles Intl to Ponta Delgada flights

Reagan-National to Faro flights

Baltimore to Faro flights

Reagan-National to Funchal flights

Reagan-National to Ponta Delgada flights

Baltimore to Ponta Delgada flights

Baltimore to Funchal flights

Dulles Intl to Porto Santo flights

Dulles Intl to Horta flights

Baltimore to Lajes flights

Dulles Intl to Pico Island flights

Dulles Intl to Lajes flights

Other flights to Lisbon

Top 10 airlines flying from Dulles Intl to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$333	Average$393	FlexibilityNo cancel fee	On-timeN/A
TAP AIR PORTUGAL	Cheapest$504	Average$890	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$536	Average$767	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$551	Average$745	FlexibilityNo cancel fee	On-time70%
Royal Air Maroc	Cheapest$552	Average$637	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$563	Average$864	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$586	Average$670	FlexibilityNo cancel fee	On-time77%
Iberia	Cheapest$592	Average$770	FlexibilityNo cancel fee	On-time77%
Air France	Cheapest$631	Average$918	FlexibilityNo cancel fee	On-time77%
Aer Lingus	Cheapest$655	Average$1,157	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$371+ Cheap flights from Dulles Intl (IAD) to Lisbon (LIS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Lisbon with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in February or November, booked 49 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from Dulles Intl to Lisbon

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Dulles Intl to Lisbon

Cheapest flights from Dulles Intl to LisbonExplore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 28, 2025.

Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 28, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Lisbon that are best for you.

Compare providers for flights from Dulles Intl to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Lisbon in April.

The best insider tips for Washington, D.C. Dulles Intl Airport to Lisbon flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Lisbon trip

Airports

IAD

LIS

Our travel experts

Best time to book a flight from Dulles Intl to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Lisbon

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Lisbon. Price data was last updated on April 25, 2025.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

What is the cheapest time of day to fly from IAD to LIS?

Find hourly flight availability from Dulles Intl to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 28, 2025.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Lisbon

Explore weekly flight availability from Dulles Intl to Lisbon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated abril 28, 2025.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

Reviews of airlines servicing Lisbon

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon round-trip?

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Lisbon one-way?

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon?

Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?

How can I find direct flights from Dulles Intl to Lisbon?

Can I find deals for business class flights from Dulles Intl to Lisbon?

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Dulles Intl to Lisbon

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to Lisbon
Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 28, 2025.