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$247+ Cheap flights from Dulles Intl (IAD) to Spain

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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — MAD
Jan 31 — Feb 71
Sat 1/31
Sat 2/7
1 adult, Economy
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Cheap flight deals from Dulles Intl to Spain

Cheapest flights from Dulles Intl to Spain
Explore the most affordable flight options available from Dulles Intl to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

This Kiwi.com deal was found by Cheapflights users on 12/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:30 pmIAD - MAD
1 stop12h 40mTAP AIR PORTUGAL
Wed 1/149:10 pmMAD - IAD
1 stop24h 05mTAP AIR PORTUGAL
Deal found 12/29$475
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Wed 12/319:45 amIAD - MAD
1 stop16h 15mUnited Airlines
Thu 1/156:00 amMAD - IAD
1 stop15h 50mUnited Airlines
Deal found 12/29$478
This FlightHub deal was found by Cheapflights users on 12/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 amIAD - MAD
1 stop16h 15mMultiple Airlines
Tue 1/137:35 pmMAD - IAD
1 stop25h 55mMultiple Airlines
Deal found 12/29$480
This Delta deal was found by Cheapflights users on 12/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:40 pmIAD - MAD
1 stop14h 00mDelta
Mon 1/121:05 pmMAD - IAD
1 stop33h 00mDelta
Deal found 12/30$482
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Tue 12/3010:17 pmIAD - MAD
2 stops27h 43mUnited Airlines
Thu 1/156:00 amMAD - IAD
1 stop20h 15mUnited Airlines
Deal found 12/29$483
This Air Canada deal was found by Cheapflights users on 12/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 amIAD - MAD
1 stop16h 15mAir Canada
Wed 1/148:30 amMAD - IAD
2 stops33h 18mAir Canada
Deal found 12/29$485
This KAYAK deal was found by Cheapflights users on 12/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:30 pmIAD - MAD
1 stop30h 50mSWISS
Wed 1/1410:10 amMAD - IAD
1 stop35h 20mSWISS
Deal found 12/29$486
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Tue 12/3010:17 pmIAD - MAD
2 stops27h 43mUnited Airlines
Wed 1/148:30 amMAD - IAD
2 stops33h 18mUnited Airlines
Deal found 12/29$489
This KAYAK deal was found by Cheapflights users on 12/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:20 pmIAD - MAD
2 stops33h 00mSWISS
Tue 1/137:35 pmMAD - IAD
1 stop25h 55mSWISS
Deal found 12/29$494
This KAYAK deal was found by Cheapflights users on 12/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:55 pmIAD - MAD
1 stop18h 40mLufthansa
Wed 1/146:35 pmMAD - IAD
1 stop27h 00mLufthansa
Deal found 12/29$499
This KAYAK deal was found by Cheapflights users on 12/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:55 pmIAD - MAD
1 stop18h 40mLufthansa
Thu 1/157:25 amMAD - IAD
2 stops18h 50mLufthansa
Deal found 12/29$510
This KAYAK deal was found by Cheapflights users on 12/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:20 pmIAD - MAD
2 stops33h 00mSWISS
Thu 1/157:35 pmMAD - IAD
2 stops25h 00mSWISS
Deal found 12/30$514

Find flight deals from Dulles Intl to Spain

Keep the following information in mind while searching for Dulles Intl to Spain flight deals. Data was last updated January 1, 2026.

Round-trip from

$404
(oojo)

One-way from

$247
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$590

Good round-trip deal

$577 or less

Good one-way deal

$424 or less
From Washington, D.C. Dulles Intl to Spain
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Spain
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Spain.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Spain.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Spain 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 2,558,603 searches. Data last updated January 1, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Spain that are best for you.

Fly from

Dulles Intl

Fly to

Spain

Route

Depart

Return

Price

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 3/2

5:30 pm-5:55 pm

1 stop18h 25m

Bilbao

Sun 3/15

6:40 pm-4:15 pm

1 stop26h 35m

$404

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Sat 4/25

10:35 pm-6:05 pm

1 stop13h 30m

Bilbao

Tue 5/5

6:50 pm-3:05 pm

1 stop26h 15m

$404

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Thu 1/22

5:30 pm-11:30 pm

1 stop24h 00m

Valencia

Mon 1/26

5:55 am-3:15 pm

1 stop15h 20m

$405

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Tue 2/3

5:30 pm-11:15 am

1 stop11h 45m

Valencia

Tue 2/17

6:15 pm-9:00 pm

1 stop32h 45m

$411

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Thu 3/5

5:30 pm-11:15 am

1 stop11h 45m

Valencia

Thu 3/12

6:00 am-4:15 pm

1 stop15h 15m

$425

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Wed 1/21

10:30 pm-11:15 am

1 stop30h 45m

Valencia

Tue 1/27

6:15 pm-9:00 pm

1 stop32h 45m

$434

Washington, D.C.Madrid

IAD - MAD

IADMAD

Washington, D.C. Dulles Intl

Sun 3/22

6:00 am-7:00 am

2 stops20h 00m

Madrid Barajas

Thu 4/2

8:25 am-4:05 pm

1 stop13h 40m

$483

Washington, D.C.Madrid

IAD - MAD

IADMAD

Washington, D.C. Dulles Intl

Tue 2/24

5:45 pm-4:40 pm

1 stop16h 55m

Madrid Barajas

Thu 4/9

11:15 am-2:00 pm

Nonstop8h 45m

$483

Washington, D.C.Palma de Mallorca

IAD - PMI

IADPMI

Washington, D.C. Dulles Intl

Sun 4/12

8:20 pm-9:05 am

1 stop30h 45m

Palma de Mallorca Son Sant Joan

Fri 4/24

9:55 am-4:50 pm

1 stop12h 55m

$486

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 4/18

8:20 pm-6:10 pm

1 stop15h 50m

Barcelona-El Prat

Wed 4/22

7:00 pm-4:50 pm

1 stop27h 50m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

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

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

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

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Spain (average of $347). Flying from Washington, D.C. Dulles Intl Airport to Spain in June is currently the most expensive (average of $598). 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 ES?

Find hourly flight availability from Dulles Intl to Spain. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 1, 2026.

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

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

About 21% of weekly flights between Washington, D.C. and Spain have experienced delays in the past year, with the average delay time being 174 minutes.

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

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

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

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

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

Over the last year, Iberia have had the lowest number of delays on this route, with just 13% of flights being delayed.

Reviews of airlines servicing Spain

Get insights into the airlines that provide service to Spain. 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 Spain. Reviews last updated January 1, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Spain, such as United Airlines, TAP AIR PORTUGAL, and Iberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,128 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,128 reviews
United Airlines
7.4
Good
9,128 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
TAP AIR PORTUGAL
7.1
Good
2,104 reviews
United Airlines
7.4
Good
9,128 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Iberia
7.0
Good
3,058 reviews
United Airlines
7.4
Good
9,128 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Lufthansa
6.8
Okay
7,675 reviews
United Airlines
7.4
Good
9,128 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
British Airways
6.7
Okay
7,631 reviews
United Airlines
7.4
Good
9,128 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

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

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

    Departing from Washington, D.C. Dulles Intl Airport to Spain will take you 18h 25m. The distance from Washington, D.C. Dulles Intl Airport to Spain is about 3757 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $184. However, be on the lookout for offers from Icelandair and Turkish Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Spain for a low price.

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

    The most popular route from Washington, D.C. Dulles Intl Airport to Spain is Washington, D.C. Dulles Intl - Madrid Barajas. You may also consider Washington, D.C. Dulles Intl - Barcelona-El Prat or Washington, D.C. Dulles Intl - Malaga.

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

    Consider United Airlines (91%), American Airlines (84%) or Qatar Airways (84%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Spain.

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Spain is $374. On average you can expect to pay $1,227. The most popular route, (Washington, D.C. Dulles Intl - Madrid Barajas), can usually be booked for $381.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Spain 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 Spain?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Spain (average of $347). Flying from Washington, D.C. Dulles Intl Airport to Spain in June is currently the most expensive (average of $598). 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 Spain

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 Leonardo da Vinci/Fiumicino flights
Dulles Intl to Istanbul flights
Dulles Intl to Lisbon flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
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Dulles Intl to Dublin flights
Dulles Intl to London City flights
Baltimore to Gatwick flights
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Reagan-National to Gatwick flights
Baltimore to Charles de Gaulle flights
Dulles Intl to Stansted flights
Reagan-National to Charles de Gaulle flights
Dulles Intl to Frankfurt flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Zurich flights
Reagan-National to Madrid flights
Dulles Intl to Edinburgh flights
Dulles Intl to Keflavik Intl flights
Baltimore to Madrid flights
Baltimore to Athens flights
Dulles Intl to Bruxelles-National flights
Reagan-National to Orly flights
Reagan-National to Athens flights
Reagan-National to Istanbul flights
Baltimore to Keflavik Intl flights
Baltimore to Lisbon flights
Dulles Intl to Luton flights
Reagan-National to Lisbon flights
Baltimore to Istanbul flights
Dulles Intl to Sabiha Gokcen flights
Reagan-National to Keflavik Intl flights
Reagan-National to Dublin flights
Baltimore to Barcelona-El Prat flights
Baltimore to Dublin flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Munich flights
Dulles Intl to Malpensa flights
Dulles Intl to Vienna flights
Dulles Intl to Copenhagen flights
Reagan-National to Amsterdam flights
Baltimore to Amsterdam flights

Top 10 airlines flying from Dulles Intl to Spain

Discover the top 10 airlines that operate flights from Dulles Intl to Spain. 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 2,558,603 searches. Data last updated January 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$198Average$731FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$200Average$762FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$316Average$699FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$353Average$510FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$385Average$529FlexibilityNo cancel feeOn-time76%
IberiaCheapest$387Average$738FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$398Average$616FlexibilityNo cancel feeOn-time77%
KLMCheapest$409Average$682FlexibilityNo cancel feeOn-time75%
FinnairCheapest$423Average$565FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$424Average$745FlexibilityNo cancel feeOn-time69%

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