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 $584. Other airlines that can offer you cheap pricing are Royal Air Maroc, from $635, and TAP AIR PORTUGAL, from $645. Turkish Airlines is currently priced 35% 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.

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 $252. On average you can expect to pay $2,007. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $390.

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 (64%), JetBlue (64%) and Air Canada (46%).

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 22% 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 $901 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 44% 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 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.

$304+ 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	$540 (Mytrip)
One-way from	$304 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$1,102
Good round-trip deal	$568 or less
Good one-way deal	$330 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 ($204 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 3, 2025.

Wed 8/275:20 pmIAD - LIS

1 stop19h 30mMultiple Airlines

Wed 9/37:10 amLIS - IAD

1 stop17h 20mMultiple Airlines

Deal found 7/1

$540

Thu 11/278:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Sun 11/304:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 7/1

$542

Wed 8/209:40 pmIAD - LIS

1 stop36h 50mTurkish Airlines

Wed 8/275:55 amLIS - IAD

1 stop34h 50mTurkish Airlines

Deal found 7/3

$584

Fri 11/78:45 pmIAD - LIS

1 stop9h 50mRoyal Air Maroc

Thu 11/135:55 pmLIS - IAD

1 stop29h 50mRoyal Air Maroc

Deal found 7/1

$608

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 July 3, 2025.

Wed 8/275:20 pmIAD - LIS

1 stop19h 30mMultiple Airlines

Wed 9/37:10 amLIS - IAD

1 stop17h 20mMultiple Airlines

Deal found 7/1

$540

Wed 8/209:40 pmIAD - LIS

1 stop36h 50mTurkish Airlines

Wed 8/275:55 amLIS - IAD

1 stop34h 50mTurkish Airlines

Deal found 7/3

$584

Sun 9/219:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Thu 10/210:05 pmLIS - IAD

1 stop26h 00mRoyal Air Maroc

Deal found 7/2

$635

Sun 8/1710:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Tue 8/2612:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 7/2

$645

Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated July 3, 2025 and is based on user searches.

Wed 7/99:05 pmIAD - LIS

1 stop19h 00mRoyal Air Maroc

Mon 7/211:15 pmLIS - IAD

1 stop10h 50mRoyal Air Maroc

Deal found 7/1

$923

Thu 7/104:10 pmIAD - LIS

2 stops33h 20mMultiple Airlines

Tue 7/158:15 amLIS - IAD

2 stops35h 41mMultiple Airlines

Deal found 7/2

$895

Fri 7/115:20 pmIAD - LIS

1 stop23h 15mAer Lingus

Wed 8/2010:15 pmLIS - IAD

1 stop22h 35mAer Lingus

Deal found 7/1

$1,033

Sun 7/1310:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Thu 7/1712:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 7/1

$1,030

Sun 8/1710:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Tue 8/2612:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 7/2

$645

Tue 8/199:00 pmIAD - LIS

1 stop19h 35mAer Lingus

Tue 8/2610:15 pmLIS - IAD

1 stop26h 15mAer Lingus

Deal found 7/2

$670

Wed 8/209:40 pmIAD - LIS

1 stop36h 50mTurkish Airlines

Wed 8/275:55 amLIS - IAD

1 stop34h 50mTurkish Airlines

Deal found 7/3

$584

Wed 8/275:20 pmIAD - LIS

1 stop19h 30mMultiple Airlines

Wed 9/37:10 amLIS - IAD

1 stop17h 20mMultiple Airlines

Deal found 7/1

$540

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 July 3, 2025.

Mon 9/111:15 pmIAD - LIS

2 stops37h 10mMultiple Airlines

Deal found 7/2

$304

Sun 8/315:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 7/1

$327

Wed 10/19:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Deal found 7/2

$358

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

Wed 8/27

5:20 pm-5:50 pm

1 stop19h 30m

Lisbon Humberto Delgado

Wed 9/3

7:10 am-7:30 pm

1 stop17h 20m

$540

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 11/27

8:30 pm-4:05 pm

1 stop14h 35m

Lisbon Humberto Delgado

Sun 11/30

4:55 pm-5:15 pm

1 stop29h 20m

$542

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 8/20

9:40 pm-3:30 pm

1 stop36h 50m

Lisbon Humberto Delgado

Wed 8/27

5:55 am-11:45 am

1 stop34h 50m

$584

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Fri 11/7

8:45 pm-11:35 am

1 stop9h 50m

Lisbon Humberto Delgado

Wed 11/12

11:35 am-6:45 pm

1 stop12h 10m

$608

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/1

11:15 pm-5:25 pm

2 stops37h 10m

$304

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 8/31

5:45 pm-6:05 am

Nonstop7h 20m

$327

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 10/1

9:05 pm-12:15 pm

1 stop10h 10m

$358

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 $1,130). 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.

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 Saturday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Lisbon

See what other customers who have flown with Turkish Airlines, TAP AIR PORTUGAL, and Royal Air Maroc 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.

Turkish Airlines

7.3

Good

3,895 reviews

Reviews

1 / 20

2.0

Mediocre

Luoai,May 2025

SFO - IST

I had the worst experience with Turkish airline I started when I got to the counter late but an hour before the flight going to San Francisco they wouldn’t let me check in but it’s ok I understand but for you to cancel my ticket and not Ofer my any kind of refund I had to buy another one way to San Francisco only to figure out that even the return ticket is cancelled so I had to buy another ticket going back it was my mistake for using them it’s my last time I used them twice a year for the same trip and I did not find the treatment of a loyal customer the original ticket they canceled was $1488 and I bought one was from Istanbul for $1025 and returned for $711 + $330 for two bags so I lost more then $2000 in the stupid trip and they lost me as a customer

Turkish Airlines

7.3

Good

3,895 reviews

Turkish Airlines

7.3

Good

3,895 reviews

Reviews

1 / 20

2.0

Mediocre

Luoai,May 2025

SFO - IST

TAP AIR PORTUGAL

7.1

Good

1,912 reviews

Turkish Airlines

7.3

Good

3,895 reviews

Reviews

1 / 20

2.0

Mediocre

Luoai,May 2025

SFO - IST

Royal Air Maroc

6.1

Okay

480 reviews

Turkish Airlines

7.3

Good

3,895 reviews

Reviews

1 / 20

2.0

Mediocre

Luoai,May 2025

SFO - IST

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 $584. Other airlines that can offer you cheap pricing are Royal Air Maroc, from $635, and TAP AIR PORTUGAL, from $645. Turkish Airlines is currently priced 35% 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 TAP AIR PORTUGAL (64%), JetBlue (64%) and Air Canada (46%).
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 $252. On average you can expect to pay $2,007. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $390.
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 $1,130). 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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Other flights to Lisbon

Top 10 airlines flying from Dulles Intl to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$333	Average$384	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$508	Average$652	FlexibilityNo cancel fee	On-time71%
TAP AIR PORTUGAL	Cheapest$508	Average$893	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$510	Average$693	FlexibilityNo cancel fee	On-time70%
Royal Air Maroc	Cheapest$552	Average$651	FlexibilityNo cancel fee	On-time75%
Air France	Cheapest$554	Average$696	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$563	Average$864	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$586	Average$674	FlexibilityNo cancel fee	On-time77%
Iberia	Cheapest$592	Average$748	FlexibilityNo cancel fee	On-time77%
Aer Lingus	Cheapest$666	Average$1,051	FlexibilityNo cancel fee	On-timeN/A

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$304+ 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 9/1. 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 Thursday

Cheap flight deals from Dulles Intl to Lisbon

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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 July 3, 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 July 3, 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.

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 June 27, 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 July 3, 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 July 3, 2025.

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 July 3, 2025.

See what other customers who have flown with Turkish Airlines, TAP AIR PORTUGAL, and Royal Air Maroc 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.

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 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?

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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 July 3, 2025.