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 $509. Other airlines that can offer you cheap pricing are Icelandair, from $551, and Turkish Airlines, from $597. TAP AIR PORTUGAL is currently priced 43% 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 $350. However, be on the lookout for offers from Royal Air Maroc and Scandinavian Airlines, 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 $247. On average you can expect to pay $2,005. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $460.

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 (76%), JetBlue (63%) and Air Canada (48%).

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 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 $902 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 43% 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 4 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.

$347+ 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 Thursday

Cheap flight deals from Dulles Intl to Lisbon

Round-trip from	$509 (Trip.com)
One-way from	$347 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$1,252
Good round-trip deal	$612 or less
Good one-way deal	$342 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. 18% potential increase in price ($199 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).

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Average for round-trip flights in June 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 June 12, 2025.

Tue 11/46:00 pmIAD - LIS

1 stop19h 05mIberia

Thu 11/68:20 amLIS - IAD

1 stop13h 10mIberia

Deal found 6/9

$502

Sun 11/26:15 pmIAD - LIS

1 stop18h 30mAmerican Airlines

Wed 11/198:45 pmLIS - IAD

1 stop24h 45mAmerican Airlines

Deal found 6/9

$503

Mon 9/15:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Mon 9/85:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 6/9

$509

Sun 11/26:15 pmIAD - LIS

1 stop18h 30mBritish Airways

Wed 11/58:45 pmLIS - IAD

1 stop24h 45mBritish Airways

Deal found 6/9

$521

Wed 9/249:45 amIAD - LIS

2 stops31h 05mMultiple Airlines

Mon 9/2910:10 pmLIS - IAD

2 stops27h 55mMultiple Airlines

Deal found 6/10

$537

Wed 10/158:30 pmIAD - LIS

1 stop19h 50mIcelandair

Sun 10/269:20 pmLIS - IAD

1 stop26h 00mIcelandair

Deal found 6/11

$575

Thu 11/68:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Sun 11/164:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 6/9

$577

Tue 9/309:40 pmIAD - LIS

1 stop20h 55mTurkish Airlines

Thu 10/164:45 pmLIS - IAD

1 stop24h 00mTurkish Airlines

Deal found 6/10

$597

Wed 10/89:05 pmIAD - LIS

1 stop19h 00mRoyal Air Maroc

Thu 10/305:55 pmLIS - IAD

1 stop29h 45mRoyal Air Maroc

Deal found 6/11

$599

Sun 11/210:05 pmIAD - LIS

Nonstop7h 10mUnited Airlines

Wed 11/195:00 amLIS - IAD

1 stop15h 50mUnited Airlines

Deal found 6/9

$682

Mon 8/48:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Wed 8/1310:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 6/10

$683

Sun 11/239:55 amIAD - LIS

2 stops18h 25mAir Canada

Tue 12/25:00 amLIS - IAD

2 stops20h 29mAir Canada

Deal found 6/10

$695

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 June 12, 2025.

Mon 9/15:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Mon 9/85:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 6/9

$509

Wed 9/109:45 amIAD - LIS

3 stops27h 55mMultiple Airlines

Thu 9/187:05 pmLIS - IAD

2 stops25h 45mMultiple Airlines

Deal found 6/10

$538

Sat 8/1611:15 pmIAD - LIS

1 stop17h 05mIcelandair

Sun 8/2410:20 pmLIS - IAD

1 stop28h 50mIcelandair

Deal found 6/12

$551

Mon 9/11:30 pmIAD - LIS

1 stop20h 45mTurkish Airlines

Thu 9/115:55 amLIS - IAD

1 stop18h 50mTurkish Airlines

Deal found 6/10

$597

Mon 8/48:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Wed 8/1310:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 6/10

$683

Mon 8/119:45 amIAD - LIS

1 stop18h 35mUnited Airlines

Wed 8/2011:25 amLIS - IAD

2 stops29h 30mUnited Airlines

Deal found 6/12

$736

Tue 8/512:31 pmIAD - LIS

2 stops15h 49mAir Canada

Wed 9/311:25 amLIS - IAD

1 stop14h 40mAir Canada

Deal found 6/10

$752

Mon 9/14:30 pmIAD - LIS

2 stops17h 45mITA Airways

Wed 10/17:40 amLIS - IAD

2 stops36h 00mITA Airways

Deal found 6/10

$759

Tue 8/1212:39 pmIAD - LIS

2 stops17h 06mVirgin Atlantic

Thu 8/2112:45 pmLIS - IAD

2 stops16h 36mVirgin Atlantic

Deal found 6/10

$768

Wed 8/610:15 pmIAD - LIS

Nonstop7h 15mLufthansa

Wed 8/2012:15 pmLIS - IAD

1 stop32h 35mLufthansa

Deal found 6/10

$776

Wed 8/610:25 amIAD - LIS

2 stops16h 20mAmerican Airlines

Wed 8/2011:05 amLIS - IAD

2 stops16h 51mAmerican Airlines

Deal found 6/10

$779

Sat 7/198:31 pmIAD - LIS

1 stop30h 29mDelta

Wed 8/205:00 amLIS - IAD

1 stop15h 35mDelta

Deal found 6/11

$795

Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated June 12, 2025 and is based on user searches.

Tue 6/178:18 amIAD - LIS

3 stops17h 12mMultiple Airlines

Tue 6/2411:35 amLIS - IAD

1 stop32h 31mMultiple Airlines

Deal found 6/10

$932

Thu 6/199:05 pmIAD - LIS

1 stop15h 35mRoyal Air Maroc

Tue 6/246:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 6/10

$1,140

Thu 6/194:20 pmIAD - LIS

2 stops33h 10mPorter Airlines

Thu 7/38:15 amLIS - IAD

2 stops31h 01mPorter Airlines

Deal found 6/10

$1,355

Fri 6/2010:15 amIAD - LIS

1 stop19h 50mAir Canada

Fri 6/2712:55 pmLIS - IAD

1 stop25h 42mAir Canada

Deal found 6/11

$1,160

Sat 6/218:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Fri 8/1510:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 6/11

$1,157

Sat 6/2111:15 pmIAD - LIS

1 stop16h 40mIcelandair

Sat 8/237:00 amLIS - IAD

2 stops17h 20mIcelandair

Deal found 6/10

$1,639

Sun 6/225:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Wed 7/28:15 amLIS - IAD

2 stops28h 05mTAP AIR PORTUGAL

Deal found 6/11

$1,169

Mon 6/239:05 pmIAD - LIS

1 stop15h 35mRoyal Air Maroc

Mon 6/306:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 6/11

$903

Tue 7/18:45 pmIAD - LIS

2 stops21h 10mMultiple Airlines

Tue 7/87:10 pmLIS - IAD

2 stops23h 20mMultiple Airlines

Deal found 6/10

$679

Thu 7/101:30 pmIAD - LIS

1 stop21h 00mTurkish Airlines

Tue 7/154:45 pmLIS - IAD

1 stop24h 00mTurkish Airlines

Deal found 6/11

$631

Tue 7/1510:40 pmIAD - LIS

1 stop19h 20mBritish Airways

Wed 8/66:40 pmLIS - IAD

1 stop30h 30mBritish Airways

Deal found 6/10

$851

Sat 7/198:31 pmIAD - LIS

1 stop30h 29mDelta

Wed 8/205:00 amLIS - IAD

1 stop15h 35mDelta

Deal found 6/11

$795

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 June 12, 2025.

Mon 8/48:30 pmIAD - LIS

2 stops18h 30mMultiple Airlines

Deal found 6/12

$347

Thu 7/1710:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 6/10

$350

Wed 10/19:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Deal found 6/11

$396

Sat 12/68:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Deal found 6/10

$418

Mon 12/19:55 pmIAD - LIS

1 stop12h 00mBritish Airways

Deal found 6/10

$433

Sat 7/2611:15 pmIAD - LIS

1 stop18h 00mIcelandair

Deal found 6/11

$440

Tue 8/122:25 pmIAD - LIS

1 stop15h 40mAir Canada

Deal found 6/12

$446

Tue 10/145:20 pmIAD - LIS

1 stop23h 15mAer Lingus

Deal found 6/12

$496

Sun 7/610:20 pmIAD - LIS

Nonstop7h 20mJetBlue

Deal found 6/9

$547

Wed 7/210:15 pmIAD - LIS

Nonstop7h 15mLufthansa

Deal found 6/11

$575

Mon 6/3012:13 pmIAD - LIS

1 stop14h 47mDelta

Deal found 6/10

$583

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

Mon 9/1

5:45 pm-6:05 am

Nonstop7h 20m

Lisbon Humberto Delgado

Mon 9/8

5:30 pm-8:50 pm

Nonstop8h 20m

$509

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 9/10

9:45 am-6:40 pm

3 stops27h 55m

Lisbon Humberto Delgado

Thu 9/18

7:05 pm-3:50 pm

2 stops25h 45m

$538

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 8/16

11:15 pm-9:20 pm

1 stop17h 05m

Lisbon Humberto Delgado

Sun 8/24

10:20 pm-10:10 pm

1 stop28h 50m

$551

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/1

1:30 pm-3:15 pm

1 stop20h 45m

Lisbon Humberto Delgado

Thu 9/11

5:55 am-7:45 pm

1 stop18h 50m

$597

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 8/4

8:25 pm-9:35 pm

1 stop20h 10m

Lisbon Humberto Delgado

Wed 8/13

10:15 pm-6:55 pm

1 stop25h 40m

$683

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 8/11

9:45 am-9:20 am

1 stop18h 35m

Lisbon Humberto Delgado

Wed 8/20

11:25 am-11:55 am

2 stops29h 30m

$736

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 8/5

12:31 pm-9:20 am

2 stops15h 49m

Lisbon Humberto Delgado

Wed 9/3

11:25 am-9:05 pm

1 stop14h 40m

$752

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/1

4:30 pm-3:15 pm

2 stops17h 45m

Lisbon Humberto Delgado

Wed 10/1

7:40 am-2:40 pm

2 stops36h 00m

$759

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 8/12

12:39 pm-10:45 am

2 stops17h 06m

Lisbon Humberto Delgado

Thu 8/21

12:45 pm-12:21 am

2 stops16h 36m

$768

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 8/6

10:15 pm-10:30 am

Nonstop7h 15m

Lisbon Humberto Delgado

Wed 8/20

12:15 pm-3:50 pm

1 stop32h 35m

$776

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 22 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

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 $1,136). 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 23% on the cost of your flight, compared to a flight in the evening.

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

To help decide which airline to fly from Washington, D.C. to Lisbon, see what other customers have to say about Delta, United Airlines and Virgin Atlantic. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

652 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

JetBlue

7.3

Good

2,925 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Turkish Airlines

7.3

Good

3,848 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 4 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 $509. Other airlines that can offer you cheap pricing are Icelandair, from $551, and Turkish Airlines, from $597. TAP AIR PORTUGAL is currently priced 43% 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 $350. However, be on the lookout for offers from Royal Air Maroc and Scandinavian Airlines, 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 (76%), JetBlue (63%) and Air Canada (48%).
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 $247. On average you can expect to pay $2,005. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $460.
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 $1,136). 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$332	Average$384	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$508	Average$652	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$510	Average$693	FlexibilityNo cancel fee	On-time70%
TAP AIR PORTUGAL	Cheapest$513	Average$891	FlexibilityNo cancel fee	On-timeN/A
Royal Air Maroc	Cheapest$552	Average$644	FlexibilityNo cancel fee	On-time75%
Air France	Cheapest$554	Average$813	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$563	Average$864	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$586	Average$669	FlexibilityNo cancel fee	On-time77%
Iberia	Cheapest$592	Average$748	FlexibilityNo cancel fee	On-time77%
Aer Lingus	Cheapest$655	Average$1,116	FlexibilityNo cancel fee	On-timeN/A

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$347+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.

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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 Thursday

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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 June 12, 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 June 12, 2025.

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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

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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 June 9, 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 June 12, 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

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated June 12, 2025.

To help decide which airline to fly from Washington, D.C. to Lisbon, see what other customers have to say about Delta, United Airlines and Virgin Atlantic. You can also see how each airline stacks up 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.

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?

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

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

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

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Alternative routes for Dulles Intl to Lisbon

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Top 10 airlines flying from Dulles Intl to Lisbon

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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 June 12, 2025.