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$273+ Cheap flights from Dulles Intl (IAD) to Portugal

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LIS
nov. 5 — nov. 121
1 adult
mar. 11/5
mar. 11/12
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Find flight deals from Dulles Intl to Portugal

Cheapest flights from Dulles Intl to Portugal
Explore the most affordable flight options available from Dulles Intl to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 31, 2024.

This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/27:15 pmIAD - OPO
1 stop12h 50mTAP AIR PORTUGAL
lun. 12/98:00 pmOPO - IAD
1 stop23h 30mTAP AIR PORTUGAL
Deal found 10/30$458
This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/255:10 pmIAD - FAO
1 stop13h 45mScandinavian Airlines
mar. 12/1012:45 pmFAO - IAD
1 stop31h 55mScandinavian Airlines
Deal found 10/30$483
This Gotogate deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/55:30 pmIAD - FAO
1 stop25h 20mTAP AIR PORTUGAL
jue. 12/124:35 pmFAO - IAD
1 stop33h 25mTAP AIR PORTUGAL
Deal found 10/30$524
This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/273:55 pmIAD - OPO
2 stops15h 10mMultiple Airlines
mié. 12/412:05 pmOPO - IAD
1 stop33h 20mMultiple Airlines
Deal found 10/30$563
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/285:30 pmIAD - LIS
Nonstop7h 05mTAP AIR PORTUGAL
mar. 12/1010:45 amLIS - IAD
Nonstop8h 45mTAP AIR PORTUGAL
Deal found 10/31$568
This SWISS deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/38:45 pmIAD - OPO
1 stop33h 30mSWISS
lun. 12/912:00 pmOPO - IAD
1 stop33h 25mSWISS
Deal found 10/31$575
This KLM deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/146:30 pmIAD - OPO
1 stop11h 20mKLM
dom. 11/175:00 amOPO - IAD
1 stop15h 45mKLM
Deal found 10/31$578
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1412:15 pmIAD - OPO
2 stops17h 35mDelta
dom. 11/175:00 amOPO - IAD
1 stop15h 45mDelta
Deal found 10/31$582
This KLM deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/95:35 pmIAD - FAO
1 stop20h 20mKLM
mar. 12/177:45 pmFAO - IAD
1 stop25h 00mKLM
Deal found 10/31$583
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/271:05 pmIAD - OPO
2 stops21h 10mUnited Airlines
mié. 12/412:30 pmOPO - IAD
2 stops37h 08mUnited Airlines
Deal found 10/30$588
This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/176:10 pmIAD - LIS
3 stops22h 15mMultiple Airlines
lun. 11/258:05 pmLIS - IAD
3 stops25h 55mMultiple Airlines
Deal found 10/30$589
This Gotogate deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/110:30 pmIAD - PDL
1 stop16h 00mTAP AIR PORTUGAL
lun. 12/97:25 pmPDL - IAD
1 stop23h 05mTAP AIR PORTUGAL
Deal found 10/30$595

Find flights from Dulles Intl to Portugal within your budget

Customize your flight search to find flights from Dulles Intl to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,570,725 searches. Data last updated octubre 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

lun. 1/6

7:40 pm-6:25 pm

2 stops17h 45m

$288

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 11/13

10:30 pm-7:00 pm

1 stop15h 30m

$354

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

dom. 12/29

8:40 pm-11:35 am

1 stop9h 55m

$360

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

dom. 12/1

6:10 pm-8:15 pm

1 stop21h 05m

$379

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mié. 11/27

5:10 pm-8:55 am

1 stop34h 45m

$393

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 11/13

8:29 am-11:15 am

2 stops21h 46m

$446

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

vie. 12/27

5:50 pm-3:15 pm

1 stop16h 25m

$447

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mar. 12/24

5:35 pm-11:45 am

1 stop13h 10m

$450

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

mar. 1/28

6:00 pm-9:45 pm

1 stop22h 45m

$500

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

jue. 1/2

7:40 pm-8:20 pm

1 stop19h 40m

$505

Flights are sorted by cheapest first

Deals found on 10/29

Showing 1-10 of 60 results
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Best time to book a flight from Dulles Intl to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal 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.

Travel insights for flights from Dulles Intl to Portugal

Get recent, data-driven insights about flights from Dulles Intl to Portugal including ideal travel times, pricing trends, and more.

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

Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portugal (average of $575). Flying from Washington, D.C. Dulles Intl Airport to Portugal in June is currently the most expensive (average of $1,182). 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 PT?

Find hourly flight availability from Dulles Intl to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 31, 2024.

When flying from Washington, D.C. Dulles Intl Airport to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal 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 Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated octubre 31, 2024.
Read reviews from past customers who have flown Turkish Airlines, Aer Lingus and Air Canada from Washington, D.C. to Portugal. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,835 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,835 reviews
Delta
8.0
Very good
8,835 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,352 reviews
Delta
8.0
Very good
8,835 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.7
Good
829 reviews
Delta
8.0
Very good
8,835 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.6
Good
1,644 reviews
Delta
8.0
Very good
8,835 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,531 reviews
Delta
8.0
Very good
8,835 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

  • Can I find flights from Washington, D.C. Dulles Intl Airport to Portugal for under $400 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Portugal for under $400. The cheapest flight booked recently is on PLAY for just $338, but on average you can expect to pay $552.

  • Are there nonstop flights from Washington, D.C. Dulles Intl Airport to Portugal for under $600 on Cheapflights?

    Cheapflights has at least 3 direct flights from Washington, D.C. Dulles Intl Airport to Portugal under $600. A good price for a nonstop flight from Washington, D.C. Dulles Intl Airport to Portugal is less than $681.

  • Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Portugal for under $600?

    There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to Portugal within the next 7 days for less than $600.

  • What days are nonstop flights available from Washington, D.C. Dulles Intl Airport to Portugal?

    Nonstop flights can be found on the following days: Thursday.

  • How many flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average per day?

    Per day, 3 flights depart from Washington, D.C. Dulles Intl Airport to Portugal on average.
    Evening (6pm - Midnight) - 100% of flight departures

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

    PLAY, TAP AIR PORTUGAL, and Scandinavian Airlines can get you from Washington, D.C. Dulles Intl Airport to Portugal in just under 13h 45m. Your travel time can differ by up to 7h 20m. The distance between Washington, D.C. Dulles Intl Airport and Portugal is about 3602 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Portugal are PLAY ($340), TAP AIR PORTUGAL ($342), and Royal Air Maroc ($360).

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Portugal?

    While some choose either Washington, D.C. Dulles Intl - Porto or Washington, D.C. Dulles Intl - Funchal Madeira, Washington, D.C. Dulles Intl - Lisbon Humberto Delgado is the most popular route from Washington, D.C. Dulles Intl Airport to Portugal.

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

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Portugal are JetBlue (72%), TAP AIR PORTUGAL (72%) and Air Canada (68%).

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

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Portugal? While on average our users pay $1,531, our data indicates the cheapest price to be $301. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $377.

  • What does IAD to LIS mean?

    IAD and LIS are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. IAD to LIS refers to a flight route from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Porto Airport (OPO), Funchal Madeira Airport (FNC), Faro Airport (FAO), Ponta Delgada Nordela Airport (PDL), Lajes Airport (TER).

  • Can I find deals for flights from Dulles Intl to Portugal that include extra baggage allowance?

    The amount of baggage you can bring on your Dulles Intl to Portugal flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Dulles Intl to Portugal with specific airlines?

    Yes, Cheapflights allows you to browse and filter Dulles Intl to Portugal flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

  • How can I find direct flights from Dulles Intl to Portugal?

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

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

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

  • Can I find deals for flights from Dulles Intl to Portugal that allow pets onboard?

    Many airlines flying from Dulles Intl to Portugal offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Dulles Intl to Portugal?

    Yes, you can often find last-minute deals on Dulles Intl to Portugal flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Washington, D.C. Dulles Intl Airport to Portugal flight deals updated?

    The Washington, D.C. Dulles Intl Airport to Portugal flight deals you see on this page were last updated on 10/31.

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

    Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portugal (average of $575). Flying from Washington, D.C. Dulles Intl Airport to Portugal in June is currently the most expensive (average of $1,182). 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 Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Dulles Intl to Charles de Gaulle flights
Baltimore to Heathrow flights
Dulles Intl to Istanbul flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to Madrid flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Dulles Intl to London City flights
Dulles Intl to Frankfurt flights
Reagan-National to Charles de Gaulle flights
Baltimore to Gatwick flights
Baltimore to Charles de Gaulle flights
Dulles Intl to Orly flights
Reagan-National to Orly flights
Reagan-National to Gatwick flights
Dulles Intl to Dublin flights
Dulles Intl to Lisbon flights
Baltimore to Stansted flights
Reagan-National to Istanbul flights
Reagan-National to Madrid flights
Dulles Intl to Amsterdam flights
Baltimore to Madrid flights
Dulles Intl to Barcelona-El Prat flights
Baltimore to Istanbul flights
Dulles Intl to Bruxelles-National flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Keflavik Intl flights
Reagan-National to Lisbon flights
Dulles Intl to Stansted flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Reagan-National to Frankfurt flights
Dulles Intl to Munich flights
Baltimore to Frankfurt flights
Baltimore to Lisbon flights
Baltimore to Keflavik Intl flights
Reagan-National to Keflavik Intl flights
Dulles Intl to Luton flights
Dulles Intl to Copenhagen flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Sabiha Gokcen flights
Dulles Intl to Zurich flights
Baltimore to Dublin flights
Dulles Intl to Geneva flights
Baltimore to Orly flights
Dulles Intl to Athens flights
Reagan-National to London City flights
Dulles Intl to Malpensa flights
Baltimore to Luton flights
Dulles Intl to Vienna flights

Top 10 airlines flying from Dulles Intl to Portugal

Discover the top 10 airlines that operate flights from Dulles Intl to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,570,725 searches. Data last updated octubre 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$296Average$369FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$418Average$749FlexibilityNo cancel feeOn-time77%
DeltaCheapest$419Average$808FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$428Average$676FlexibilityNo cancel feeOn-time75%
IberiaCheapest$430Average$705FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$459Average$917FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$483Average$779FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$485Average$978FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$499Average$881FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$503Average$702FlexibilityNo cancel feeOn-time70%
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