What is the most punctual flight time for Washington, D.C. to Lisbon flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

How often are flights from Washington, D.C. to Lisbon delayed?

About 28% of weekly flights between Washington, D.C. and Lisbon have experienced delays in the past year, with the average delay time being 136 minutes.

Which airline has the best punctuality record on Washington, D.C. to Lisbon flights?

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 26% of flights being delayed.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

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 20h 35m. Airlines will cover a distance of 3580 mi.

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 $447. Other airlines that can offer you cheap pricing are British Airways, from $480, and Scandinavian Airlines, from $504. TAP AIR PORTUGAL is currently priced 50% 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 $339. 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.

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

The most flights from IAD to LIS are scheduled on a Monday (5 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 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 $252. On average you can expect to pay $1,162. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $450.

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 Air Canada (76%), United Airlines (76%) and Lufthansa (76%).

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 TAP AIR PORTUGAL, United Airlines or Royal Air Maroc as they are the most popular for this route.

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Lisbon flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Washington, D.C. Dulles Intl Airport-Lisbon flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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 4 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.

$257+ Flights from Washington, D.C. Dulles Intl Airport to Lisbon

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

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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 January, booked 88 days in advance, depart on a Monday or Tuesday and return on a Sunday

Cheap 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 diciembre 9, 2025.

lun. 12/88:45 pmIAD - LIS

1 stop9h 50mMultiple Airlines

jue. 1/297:00 amLIS - IAD

2 stops21h 12mMultiple Airlines

Deal found 12/8

$746

mié. 12/318:45 pmIAD - LIS

1 stop9h 50mMultiple Airlines

vie. 5/18:25 amLIS - IAD

1 stop12h 05mMultiple Airlines

Deal found 12/8

$749

dom. 12/710:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

dom. 12/145:10 pmLIS - IAD

Nonstop8h 50mTAP AIR PORTUGAL

Deal found 12/6

$768

dom. 12/76:00 pmIAD - LIS

1 stop11h 25mMultiple Airlines

dom. 12/147:45 amLIS - IAD

1 stop13h 45mMultiple Airlines

Deal found 12/6

$789

mar. 12/308:30 pmIAD - LIS

2 stops34h 30mMultiple Airlines

vie. 5/16:35 amLIS - IAD

1 stop13h 55mMultiple Airlines

Deal found 12/8

$811

mié. 12/107:40 pmIAD - LIS

1 stop19h 40mIcelandair

dom. 12/149:20 pmLIS - IAD

1 stop26h 10mIcelandair

Deal found 12/7

$825

dom. 12/2810:55 pmIAD - LIS

2 stops17h 20mMultiple Airlines

vie. 5/16:35 amLIS - IAD

1 stop13h 55mMultiple Airlines

Deal found 12/8

$849

lun. 12/88:45 pmIAD - LIS

1 stop9h 50mMultiple Airlines

lun. 12/1510:00 pmLIS - IAD

2 stops49h 45mMultiple Airlines

Deal found 12/7

$851

mié. 12/3110:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

sáb. 1/109:00 pmLIS - IAD

2 stops39h 20mTAP AIR PORTUGAL

Deal found 12/7

$858

lun. 12/88:45 pmIAD - LIS

1 stop9h 50mMultiple Airlines

vie. 12/129:00 amLIS - IAD

2 stops40h 24mMultiple Airlines

Deal found 12/7

$861

lun. 12/292:09 pmIAD - LIS

2 stops40h 16mMultiple Airlines

vie. 5/16:35 amLIS - IAD

1 stop13h 55mMultiple Airlines

Deal found 12/8

$863

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 diciembre 9, 2025.

jue. 3/58:30 pmIAD - LIS

2 stops20h 20mMultiple Airlines

mié. 3/117:00 pmLIS - IAD

1 stop27h 15mMultiple Airlines

Deal found 12/7

$653

mar. 1/61:30 pmIAD - LIS

1 stop20h 35mTurkish Airlines

mar. 1/274:05 pmLIS - IAD

1 stop32h 15mTurkish Airlines

Deal found 12/7

$662

sáb. 1/318:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

mar. 2/312:45 pmLIS - IAD

2 stops33h 30mScandinavian Airlines

Deal found 12/6

$733

jue. 2/1212:23 pmIAD - LIS

2 stops22h 17mMultiple Airlines

mié. 2/187:00 pmLIS - IAD

2 stops29h 09mMultiple Airlines

Deal found 12/7

$687

mar. 2/1012:23 pmIAD - LIS

2 stops22h 17mMultiple Airlines

lun. 2/166:45 amLIS - IAD

1 stop15h 30mMultiple Airlines

Deal found 12/7

$701

lun. 2/912:23 pmIAD - LIS

2 stops28h 07mMultiple Airlines

dom. 2/157:00 pmLIS - IAD

1 stop27h 15mMultiple Airlines

Deal found 12/8

$702

dom. 5/38:20 pmIAD - LIS

1 stop14h 25mMultiple Airlines

sáb. 5/97:00 amLIS - IAD

2 stops17h 16mMultiple Airlines

Deal found 12/7

$746

jue. 5/78:20 pmIAD - LIS

2 stops20h 45mMultiple Airlines

mié. 5/132:35 pmLIS - IAD

2 stops31h 15mMultiple Airlines

Deal found 12/7

$749

lun. 5/48:20 pmIAD - LIS

2 stops20h 45mMultiple Airlines

mié. 5/132:35 pmLIS - IAD

2 stops31h 15mMultiple Airlines

Deal found 12/8

$751

mié. 4/1512:30 pmIAD - LIS

2 stops22h 30mMultiple Airlines

dom. 4/197:15 amLIS - IAD

1 stop14h 35mMultiple Airlines

Deal found 12/8

$766

mar. 3/312:23 pmIAD - LIS

2 stops22h 17mMultiple Airlines

lun. 3/96:45 amLIS - IAD

1 stop15h 30mMultiple Airlines

Deal found 12/7

$771

dom. 2/2212:23 pmIAD - LIS

2 stops22h 17mMultiple Airlines

sáb. 2/287:05 amLIS - IAD

1 stop16h 45mMultiple Airlines

Deal found 12/7

$771

Last-minute flights from Dulles Intl to Lisbon
Discover last-minute flight deals from Dulles Intl to Lisbon. Data last updated diciembre 9, 2025 and is based on user searches.

jue. 1/88:30 pmIAD - LIS

1 stop14h 20mScandinavian Airlines

vie. 1/304:40 pmLIS - IAD

1 stop31h 10mScandinavian Airlines

Deal found 12/7

$629

mié. 1/1412:23 pmIAD - LIS

2 stops39h 32mScandinavian Airlines

lun. 2/164:55 pmLIS - IAD

2 stops47h 46mScandinavian Airlines

Deal found 12/8

$616

mié. 1/1412:23 pmIAD - LIS

2 stops39h 32mScandinavian Airlines

jue. 1/226:55 pmLIS - IAD

2 stops45h 48mScandinavian Airlines

Deal found 12/8

$627

jue. 1/151:30 pmIAD - LIS

1 stop20h 35mTurkish Airlines

sáb. 2/1411:40 amLIS - IAD

1 stop29h 05mTurkish Airlines

Deal found 12/8

$617

dom. 1/1812:23 pmIAD - LIS

2 stops22h 42mScandinavian Airlines

jue. 1/226:55 pmLIS - IAD

2 stops45h 48mScandinavian Airlines

Deal found 12/8

$614

lun. 1/197:49 pmIAD - LIS

2 stops39h 16mScandinavian Airlines

mar. 1/2712:45 pmLIS - IAD

2 stops57h 30mScandinavian Airlines

Deal found 12/8

$613

lun. 1/197:49 pmIAD - LIS

2 stops39h 16mScandinavian Airlines

lun. 2/166:45 amLIS - IAD

1 stop15h 30mScandinavian Airlines

Deal found 12/8

$628

mar. 1/201:30 pmIAD - LIS

1 stop20h 35mTurkish Airlines

mar. 1/276:00 amLIS - IAD

1 stop18h 20mTurkish Airlines

Deal found 12/8

$619

mié. 1/2112:23 pmIAD - LIS

2 stops39h 32mScandinavian Airlines

mar. 1/2712:45 pmLIS - IAD

2 stops57h 30mScandinavian Airlines

Deal found 12/8

$632

jue. 1/2212:23 pmIAD - LIS

2 stops39h 32mScandinavian Airlines

jue. 1/296:55 pmLIS - IAD

2 stops29h 14mScandinavian Airlines

Deal found 12/8

$622

jue. 1/229:15 pmIAD - LIS

1 stop32h 25mTurkish Airlines

mar. 1/276:00 amLIS - IAD

1 stop18h 20mTurkish Airlines

Deal found 12/8

$633

sáb. 1/317:40 pmIAD - LIS

3 stops19h 45mMultiple Airlines

vie. 2/68:50 pmLIS - IAD

2 stops26h 40mMultiple Airlines

Deal found 12/6

$634

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 diciembre 9, 2025.

lun. 3/239:58 pmIAD - LIS

2 stops41h 12mMultiple Airlines

Deal found 12/7

$257

lun. 1/261:31 pmIAD - LIS

2 stops26h 04mMultiple Airlines

Deal found 12/9

$261

vie. 2/69:35 amIAD - LIS

2 stops42h 30mMultiple Airlines

Deal found 12/8

$264

vie. 1/239:35 amIAD - LIS

2 stops42h 30mMultiple Airlines

Deal found 12/9

$270

mar. 1/2011:00 amIAD - LIS

3 stops48h 45mMultiple Airlines

Deal found 12/9

$284

dom. 3/86:00 amIAD - LIS

3 stops46h 45mMultiple Airlines

Deal found 12/8

$310

sáb. 1/3111:39 amIAD - LIS

2 stops43h 01mMultiple Airlines

Deal found 12/7

$311

Find flight deals from Dulles Intl to Lisbon

Most accurate provider	Justfly.com 3 stars
Most trusted provider	Justfly.com 3 stars
Round-trip from	$612 (oojo)
One-way from	$257 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$1,099
Good round-trip deal	$533 or less
Good one-way deal	$313 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. 16% potential increase in price ($183 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 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

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. 3/5

8:30 pm-9:50 pm

2 stops20h 20m

Lisbon Humberto Delgado

mié. 3/11

7:00 pm-6:15 pm

1 stop27h 15m

$653

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mar. 1/6

1:30 pm-3:05 pm

1 stop20h 35m

Lisbon Humberto Delgado

mar. 1/27

4:05 pm-7:20 pm

1 stop32h 15m

$662

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 2/12

12:23 pm-3:40 pm

2 stops22h 17m

Lisbon Humberto Delgado

mié. 2/18

7:00 pm-7:09 pm

2 stops29h 09m

$687

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mar. 2/10

12:23 pm-3:40 pm

2 stops22h 17m

Lisbon Humberto Delgado

lun. 2/16

6:45 am-5:15 pm

1 stop15h 30m

$701

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

lun. 2/9

12:23 pm-9:30 pm

2 stops28h 07m

Lisbon Humberto Delgado

dom. 2/15

7:00 pm-5:15 pm

1 stop27h 15m

$702

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

sáb. 1/31

8:30 pm-4:05 pm

1 stop14h 35m

Lisbon Humberto Delgado

mar. 2/3

12:45 pm-5:15 pm

2 stops33h 30m

$733

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

dom. 5/3

8:20 pm-3:45 pm

1 stop14h 25m

Lisbon Humberto Delgado

sáb. 5/9

7:00 am-7:16 pm

2 stops17h 16m

$746

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 5/7

8:20 pm-10:05 pm

2 stops20h 45m

Lisbon Humberto Delgado

mié. 5/13

2:35 pm-4:50 pm

2 stops31h 15m

$749

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

lun. 5/4

8:20 pm-10:05 pm

2 stops20h 45m

Lisbon Humberto Delgado

mié. 5/13

2:35 pm-4:50 pm

2 stops31h 15m

$751

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mié. 4/15

12:30 pm-4:00 pm

2 stops22h 30m

Lisbon Humberto Delgado

dom. 4/19

7:15 am-4:50 pm

1 stop14h 35m

$766

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 22 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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Justfly.com	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 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 Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Washington, D.C. Dulles Intl Airport-Lisbon flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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.

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

Delays

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, July is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $345). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in March is currently the most expensive (average of $550). 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 21% on the cost of your flight, compared to a flight in the evening.

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

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

9,089 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

United Airlines

7.4

Good

9,089 reviews

United Airlines

7.4

Good

9,089 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Turkish Airlines

7.3

Good

4,086 reviews

United Airlines

7.4

Good

9,089 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

TAP AIR PORTUGAL

7.1

Good

2,086 reviews

United Airlines

7.4

Good

9,089 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Lufthansa

6.8

Okay

7,619 reviews

United Airlines

7.4

Good

9,089 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Royal Air Maroc

6.2

Okay

535 reviews

United Airlines

7.4

Good

9,089 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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 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 20h 35m. Airlines will cover a distance of 3580 mi.
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 $447. Other airlines that can offer you cheap pricing are British Airways, from $480, and Scandinavian Airlines, from $504. TAP AIR PORTUGAL is currently priced 50% 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 $339. 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 Air Canada (76%), United Airlines (76%) and Lufthansa (76%).
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 $1,162. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $450.
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, July is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $345). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in March is currently the most expensive (average of $550). 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.

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Other flights to Lisbon

Top 10 airlines flying from Dulles Intl to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest$504	Average$599	FlexibilityNo cancel fee	On-time77%
American Airlines	Cheapest$508	Average$646	FlexibilityNo cancel fee	On-time71%
TAP AIR PORTUGAL	Cheapest$509	Average$887	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$510	Average$674	FlexibilityNo cancel fee	On-time70%
Royal Air Maroc	Cheapest$551	Average$669	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$563	Average$816	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$580	Average$667	FlexibilityNo cancel fee	On-time77%
Iberia	Cheapest$592	Average$770	FlexibilityNo cancel fee	On-time77%
Aer Lingus	Cheapest$666	Average$1,116	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$707	Average$1,148	FlexibilityNo cancel fee	On-time62%

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$257+ 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 3/23. 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 January, booked 88 days in advance, depart on a Monday or Tuesday and return on a Sunday

Cheap 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 diciembre 9, 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 diciembre 9, 2025.

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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 December.

Best time to book a flight from Dulles Intl to Lisbon

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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?

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?

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

How often are flights from Washington, D.C. to Lisbon delayed?

What is the most punctual flight time for Washington, D.C. to Lisbon flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Washington, D.C. to Lisbon flights?

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

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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

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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.

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?

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

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?

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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 diciembre 9, 2025.