How long is the flight from Washington, D.C. Dulles Intl Airport to Lisbon?

Departing from Washington, D.C. Dulles Intl Airport to Lisbon will take you 15h 35m. Airlines will cover a distance of 3580 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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 $338. Other airlines that can offer you cheap pricing are British Airways, from $480, and TAP AIR PORTUGAL, from $507. PLAY is currently priced 62% below the average price you’ll pay for this route.

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.

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

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

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.

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).

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 $211. On average you can expect to pay $1,373. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $451.

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 JetBlue (57%), Air Canada (55%) and United Airlines (55%).

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, Royal Air Maroc or JetBlue 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 Sunday is a good option for securing a great price. You can expect to save up to 21% 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 $909 per person but you can even find prices for as low as $350. The most expensive prices can be found in the month of December. Opting for a February flight can save you 45% on your journey compared to booking in December

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 6 inbound flights from Washington, D.C. Dulles Intl per day from 12 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.

$335+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Lisbon

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in February or November, booked 88 days in advance, depart on a Monday or Tuesday and return on a Sunday

Cheap flight deals from Dulles Intl to Lisbon

Round-trip from	$620 (Gotogate)
One-way from	$335 (FlightHub)
Popular in	June
Cheapest in	February
Average price	$871
Good round-trip deal	$585 or less
Good one-way deal	$293 or less

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

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

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Highest demand for flights based on searches. 16% potential increase in price ($182 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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

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

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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 septiembre 15, 2025.

jue. 10/231:30 pmIAD - LIS

1 stop21h 00mTurkish Airlines

jue. 10/304:05 pmLIS - IAD

1 stop24h 40mTurkish Airlines

Deal found 9/14

$622

dom. 10/1210:20 amIAD - LIS

3 stops19h 00mMultiple Airlines

sáb. 10/258:30 pmLIS - IAD

2 stops25h 20mMultiple Airlines

Deal found 9/14

$623

jue. 11/131:30 pmIAD - LIS

1 stop20h 35mTurkish Airlines

dom. 11/165:55 amLIS - IAD

1 stop18h 20mTurkish Airlines

Deal found 9/13

$624

dom. 11/99:00 amIAD - LIS

3 stops20h 25mMultiple Airlines

sáb. 11/1510:00 pmLIS - IAD

2 stops23h 40mMultiple Airlines

Deal found 9/15

$625

jue. 10/2310:20 amIAD - LIS

3 stops23h 55mMultiple Airlines

jue. 10/307:40 amLIS - IAD

2 stops17h 25mMultiple Airlines

Deal found 9/15

$626

jue. 10/1610:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

mié. 11/55:15 pmLIS - IAD

Nonstop8h 45mTAP AIR PORTUGAL

Deal found 9/12

$627

sáb. 11/158:30 pmIAD - LIS

1 stop13h 35mScandinavian Airlines

vie. 11/213:45 pmLIS - IAD

1 stop32h 05mScandinavian Airlines

Deal found 9/14

$629

mar. 11/115:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

mié. 11/195:15 pmLIS - IAD

Nonstop8h 45mTAP AIR PORTUGAL

Deal found 9/13

$632

dom. 11/21:30 pmIAD - LIS

1 stop28h 55mTurkish Airlines

sáb. 11/811:40 amLIS - IAD

1 stop29h 05mTurkish Airlines

Deal found 9/14

$634

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 septiembre 15, 2025.

jue. 10/231:30 pmIAD - LIS

1 stop21h 00mTurkish Airlines

jue. 10/304:05 pmLIS - IAD

1 stop24h 40mTurkish Airlines

Deal found 9/15

$630

vie. 10/179:05 pmIAD - LIS

1 stop15h 35mRoyal Air Maroc

mar. 10/285:55 pmLIS - IAD

1 stop29h 50mRoyal Air Maroc

Deal found 9/15

$652

jue. 3/129:30 pmIAD - LIS

2 stops44h 30mScandinavian Airlines

mar. 3/178:05 amLIS - IAD

2 stops38h 10mScandinavian Airlines

Deal found 9/15

$670

vie. 10/171:30 pmIAD - LIS

1 stop20h 45mTurkish Airlines

mié. 10/225:55 amLIS - IAD

1 stop18h 50mTurkish Airlines

Deal found 9/15

$702

vie. 11/288:45 pmIAD - LIS

1 stop9h 50mRoyal Air Maroc

dom. 12/75:55 pmLIS - IAD

1 stop29h 50mRoyal Air Maroc

Deal found 9/14

$707

lun. 10/1310:05 pmIAD - LIS

2 stops19h 00mScandinavian Airlines

jue. 10/237:00 amLIS - IAD

2 stops17h 18mScandinavian Airlines

Deal found 9/14

$755

sáb. 10/189:40 pmIAD - LIS

1 stop36h 50mTurkish Airlines

mié. 10/2210:55 amLIS - IAD

1 stop29h 50mTurkish Airlines

Deal found 9/15

$702

sáb. 10/189:40 pmIAD - LIS

1 stop36h 50mTurkish Airlines

mar. 10/284:05 pmLIS - IAD

1 stop24h 40mTurkish Airlines

Deal found 9/15

$702

jue. 3/51:30 pmIAD - LIS

1 stop20h 35mTurkish Airlines

sáb. 3/711:40 amLIS - IAD

1 stop29h 05mTurkish Airlines

Deal found 9/14

$712

vie. 10/31:30 pmIAD - LIS

1 stop20h 45mTurkish Airlines

mar. 10/145:55 amLIS - IAD

1 stop18h 50mTurkish Airlines

Deal found 9/13

$742

mar. 10/211:30 pmIAD - LIS

1 stop29h 05mTurkish Airlines

sáb. 10/255:55 amLIS - IAD

1 stop35h 50mTurkish Airlines

Deal found 9/15

$762

vie. 11/211:30 pmIAD - LIS

1 stop16h 10mTurkish Airlines

dom. 11/304:05 pmLIS - IAD

1 stop24h 40mTurkish Airlines

Deal found 9/14

$762

Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated septiembre 15, 2025 and is based on user searches.

sáb. 9/271:30 pmIAD - LIS

1 stop21h 00mTurkish Airlines

mié. 10/84:30 pmLIS - IAD

1 stop32h 15mTurkish Airlines

Deal found 9/14

$634

dom. 10/1210:20 amIAD - LIS

3 stops19h 00mMultiple Airlines

sáb. 10/258:30 pmLIS - IAD

2 stops25h 20mMultiple Airlines

Deal found 9/14

$623

dom. 10/129:45 amIAD - LIS

2 stops26h 20mMultiple Airlines

lun. 10/2010:10 pmLIS - IAD

2 stops27h 55mMultiple Airlines

Deal found 9/14

$629

jue. 10/165:50 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

mié. 11/55:15 pmLIS - IAD

Nonstop8h 45mTAP AIR PORTUGAL

Deal found 9/14

$627

jue. 10/169:40 pmIAD - LIS

1 stop31h 15mTurkish Airlines

vie. 10/2411:00 amLIS - IAD

1 stop37h 45mTurkish Airlines

Deal found 9/13

$635

jue. 10/231:30 pmIAD - LIS

1 stop21h 00mTurkish Airlines

jue. 10/304:05 pmLIS - IAD

1 stop24h 40mTurkish Airlines

Deal found 9/14

$622

jue. 10/2310:20 amIAD - LIS

3 stops23h 55mMultiple Airlines

jue. 10/307:40 amLIS - IAD

2 stops17h 25mMultiple Airlines

Deal found 9/15

$626

jue. 10/302:30 pmIAD - LIS

1 stop20h 35mTurkish Airlines

dom. 11/95:55 amLIS - IAD

1 stop34h 50mTurkish Airlines

Deal found 9/14

$624

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 septiembre 15, 2025.

mié. 11/510:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

Deal found 9/13

$335

jue. 10/98:02 pmIAD - LIS

2 stops44h 18mMultiple Airlines

Deal found 9/12

$336

vie. 10/37:14 pmIAD - LIS

2 stops43h 46mMultiple Airlines

Deal found 9/13

$338

vie. 10/178:04 pmIAD - LIS

3 stops33h 01mMultiple Airlines

Deal found 9/15

$339

mar. 10/149:00 amIAD - LIS

2 stops44h 50mMultiple Airlines

Deal found 9/13

$340

vie. 9/267:14 pmIAD - LIS

2 stops57h 41mMultiple Airlines

Deal found 9/14

$349

sáb. 12/136:00 amIAD - LIS

3 stops33h 20mMultiple Airlines

Deal found 9/13

$350

dom. 10/59:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Deal found 9/14

$351

sáb. 10/1112:35 pmIAD - LIS

3 stops28h 00mMultiple Airlines

Deal found 9/13

$357

lun. 10/135:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 9/14

$359

jue. 10/236:15 amIAD - LIS

2 stops47h 35mMultiple Airlines

Deal found 9/13

$360

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

jue. 10/23

1:30 pm-3:30 pm

1 stop21h 00m

Lisbon Humberto Delgado

jue. 10/30

4:05 pm-12:45 pm

1 stop24h 40m

$630

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

vie. 10/17

9:05 pm-5:40 pm

1 stop15h 35m

Lisbon Humberto Delgado

mar. 10/28

5:55 pm-7:45 pm

1 stop29h 50m

$652

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 3/12

9:30 pm-10:00 pm

2 stops44h 30m

Lisbon Humberto Delgado

mar. 3/17

8:05 am-6:15 pm

2 stops38h 10m

$670

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

vie. 10/17

1:30 pm-3:15 pm

1 stop20h 45m

Lisbon Humberto Delgado

mié. 10/22

5:55 am-7:45 pm

1 stop18h 50m

$702

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

sáb. 10/18

9:40 pm-3:30 pm

1 stop36h 50m

Lisbon Humberto Delgado

mié. 10/22

10:55 am-11:45 am

1 stop29h 50m

$702

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

sáb. 10/18

9:40 pm-3:30 pm

1 stop36h 50m

Lisbon Humberto Delgado

mar. 10/28

4:05 pm-12:45 pm

1 stop24h 40m

$702

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

vie. 11/28

8:45 pm-11:35 am

1 stop9h 50m

Lisbon Humberto Delgado

dom. 12/7

5:55 pm-6:45 pm

1 stop29h 50m

$707

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 3/5

1:30 pm-3:05 pm

1 stop20h 35m

Lisbon Humberto Delgado

sáb. 3/7

11:40 am-11:45 am

1 stop29h 05m

$712

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

vie. 10/3

1:30 pm-3:15 pm

1 stop20h 45m

Lisbon Humberto Delgado

mar. 10/14

5:55 am-7:45 pm

1 stop18h 50m

$742

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

lun. 10/13

10:05 pm-10:05 pm

2 stops19h 00m

Lisbon Humberto Delgado

jue. 10/23

7:00 am-7:18 pm

2 stops17h 18m

$755

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 24 results

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 the check-in area to be crowded. Arrive early to navigate the bustling terminal efficiently.

LIS

Upon arrival at LIS, use the metro line for a quick 20-minute trip 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

Prices

Airlines

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 88 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 $1,127). 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 22% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Lisbon

See what other customers who have flown with United Airlines, Turkish Airlines, and TAP AIR PORTUGAL from Washington, D.C. Dulles Intl Airport to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,929 reviews

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Turkish Airlines

7.3

Good

3,968 reviews

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

TAP AIR PORTUGAL

7.1

Good

1,975 reviews

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Lufthansa

6.8

Okay

7,407 reviews

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Royal Air Maroc

6.2

Okay

511 reviews

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 6 inbound flights from Washington, D.C. Dulles Intl per day from 12 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.
How long is the flight from Washington, D.C. Dulles Intl Airport to Lisbon?
Departing from Washington, D.C. Dulles Intl Airport to Lisbon will take you 15h 35m. Airlines will cover a distance of 3580 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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 $338. Other airlines that can offer you cheap pricing are British Airways, from $480, and TAP AIR PORTUGAL, from $507. PLAY is currently priced 62% below the average price you’ll pay for this route.
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 JetBlue (57%), Air Canada (55%) and United Airlines (55%).
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 $211. On average you can expect to pay $1,373. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $451.
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 $1,127). 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

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Alternative routes for Dulles Intl to Lisbon

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Other flights to Lisbon

Top 10 airlines flying from Dulles Intl to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$338	Average$391	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$480	Average$693	FlexibilityNo cancel fee	On-time70%
TAP AIR PORTUGAL	Cheapest$507	Average$889	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$508	Average$646	FlexibilityNo cancel fee	On-time71%
Royal Air Maroc	Cheapest$552	Average$653	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$563	Average$755	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$586	Average$667	FlexibilityNo cancel fee	On-time77%
Iberia	Cheapest$592	Average$770	FlexibilityNo cancel fee	On-time77%
Lufthansa	Cheapest$665	Average$1,078	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$666	Average$1,109	FlexibilityNo cancel fee	On-timeN/A

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$335+ 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 11/4. 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

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in February or November, booked 88 days in advance, depart on a Monday or Tuesday and return on a Sunday

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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 septiembre 15, 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 septiembre 15, 2025.

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

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See what other customers who have flown with United Airlines, Turkish Airlines, and TAP AIR PORTUGAL from Washington, D.C. Dulles Intl Airport to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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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 septiembre 15, 2025.