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$339+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — MAD
May 11 — May 181
Mon 5/11
Mon 5/18
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 April 11, 2026.

This Mytrip deal was found by Cheapflights users on 4/7. 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.
Sun 4/2610:35 pm
IAD
-
SVQ
1 stop10h 30m
TAP AIR PORTUGAL
Tue 5/1210:10 am
SVQ
-
IAD
1 stop11h 00m
TAP AIR PORTUGAL
Deal found 4/7$489
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:35 pm
IAD
-
MAD
1 stop16h 55m
TAP AIR PORTUGAL
Mon 5/48:10 pm
MAD
-
IAD
1 stop25h 00m
TAP AIR PORTUGAL
Deal found 4/6$511
This oojo deal was found by Cheapflights users on 4/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:35 pm
IAD
-
MAD
1 stop14h 35m
TAP AIR PORTUGAL
Tue 9/87:40 am
MAD
-
IAD
1 stop18h 55m
TAP AIR PORTUGAL
Deal found 4/8$514
This FlightHub deal was found by Cheapflights users on 4/8. 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 11/1810:30 pm
IAD
-
MAD
1 stop15h 50m
TAP AIR PORTUGAL
Fri 11/272:55 pm
MAD
-
IAD
1 stop11h 40m
TAP AIR PORTUGAL
Deal found 4/8$527
This FlightHub deal was found by Cheapflights users on 4/8. 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.
Tue 12/15:25 pm
IAD
-
MAD
1 stop17h 45m
TAP AIR PORTUGAL
Tue 12/87:40 am
MAD
-
IAD
1 stop12h 55m
TAP AIR PORTUGAL
Deal found 4/8$531
This FlightHub deal was found by Cheapflights users on 4/10. 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.
Mon 8/1710:35 pm
IAD
-
MAD
1 stop14h 35m
TAP AIR PORTUGAL
Mon 9/78:10 pm
MAD
-
IAD
1 stop25h 00m
TAP AIR PORTUGAL
Deal found 4/10$532
This Super.com deal was found by Cheapflights users on 4/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:40 pm
IAD
-
MAD
1 stop10h 25m
TAP AIR PORTUGAL
Wed 9/91:40 pm
MAD
-
IAD
1 stop12h 55m
TAP AIR PORTUGAL
Deal found 4/9$533
This oojo deal was found by Cheapflights users on 4/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:25 pm
IAD
-
MAD
1 stop17h 45m
TAP AIR PORTUGAL
Tue 12/17:40 am
MAD
-
IAD
1 stop12h 55m
TAP AIR PORTUGAL
Deal found 4/8$534
This oojo deal was found by Cheapflights users on 4/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:25 pm
IAD
-
MAD
1 stop11h 55m
TAP AIR PORTUGAL
Mon 11/239:10 pm
MAD
-
IAD
1 stop23h 25m
TAP AIR PORTUGAL
Deal found 4/10$535
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 11/1810:30 pm
IAD
-
MAD
1 stop12h 40m
TAP AIR PORTUGAL
Wed 11/252:55 pm
MAD
-
IAD
1 stop11h 40m
TAP AIR PORTUGAL
Deal found 4/8$537
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Mon 4/2710:35 pm
IAD
-
MAD
1 stop29h 30m
TAP AIR PORTUGAL
Mon 5/118:10 pm
MAD
-
IAD
1 stop25h 00m
TAP AIR PORTUGAL
Deal found 4/7$538
This Kiwi.com deal was found by Cheapflights users on 4/7. 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 11/1810:30 pm
IAD
-
MAD
1 stop12h 40m
TAP AIR PORTUGAL
Tue 11/247:40 am
MAD
-
IAD
1 stop12h 55m
TAP AIR PORTUGAL
Deal found 4/7$540

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 April 11, 2026.

Round-trip from

$489
(Mytrip)

One-way from

$339
(Priceline)

Popular in

June

Cheapest in

January

Average price

$819

Good round-trip deal

$795 or less

Good one-way deal

$543 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. 25% potential increase in price ($253 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
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 April 11, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Sat 4/25

1:20 pm-5:20 pm

1 stop22h 00m

Bilbao

Tue 5/5

12:10 pm-11:35 am

1 stop29h 25m

$632

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Sat 9/19

9:45 pm-9:55 am

1 stop30h 10m

Valencia

Wed 9/23

11:05 am-11:35 am

1 stop30h 30m

$680

Washington, D.C.Palma de Mallorca

IAD - PMI

IADPMI

Washington, D.C. Dulles Intl

Sun 9/20

8:20 pm-9:05 am

1 stop30h 45m

Palma de Mallorca Son Sant Joan

Wed 9/23

9:55 am-5:00 pm

1 stop13h 05m

$723

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Fri 5/1

1:20 pm-11:10 am

1 stop15h 50m

Bilbao

Sat 5/9

12:10 pm-11:35 am

1 stop29h 25m

$742

Washington, D.C.Palma de Mallorca

IAD - PMI

IADPMI

Washington, D.C. Dulles Intl

Sun 9/20

6:15 am-3:20 pm

2 stops27h 05m

Palma de Mallorca Son Sant Joan

Wed 9/23

10:00 am-4:35 pm

1 stop12h 35m

$752

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Thu 5/7

10:35 pm-5:35 pm

1 stop37h 00m

Bilbao

Mon 5/11

12:25 pm-3:10 pm

1 stop32h 45m

$757

Washington, D.C.Madrid

IAD - MAD

IADMAD

Washington, D.C. Dulles Intl

Thu 4/16

6:15 pm-4:45 pm

1 stop16h 30m

Madrid Barajas

Thu 4/23

6:00 am-4:15 pm

2 stops16h 15m

$762

Washington, D.C.Madrid

IAD - MAD

IADMAD

Washington, D.C. Dulles Intl

Sun 4/26

12:45 pm-12:10 pm

2 stops17h 25m

Madrid Barajas

Thu 5/7

6:00 am-3:35 pm

1 stop15h 35m

$766

Washington, D.C.Palma de Mallorca

IAD - PMI

IADPMI

Washington, D.C. Dulles Intl

Wed 8/19

6:15 am-8:30 am

2 stops20h 15m

Palma de Mallorca Son Sant Joan

Sun 8/23

12:00 pm-8:00 pm

1 stop14h 00m

$768

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Sat 9/19

9:30 pm-8:25 pm

1 stop16h 55m

Valencia

Wed 9/23

11:25 am-8:20 pm

1 stop14h 55m

$781

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Spain (average of $337). Flying from Washington, D.C. Dulles Intl Airport to Spain in June is currently the most expensive (average of $499). 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 April 11, 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.

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

Explore weekly flight availability from Dulles Intl to Spain. 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 April 11, 2026.

The most flights from IAD to ES0 are scheduled on a Monday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).

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

About 19% of weekly flights between Washington, D.C. and Spain have experienced delays in the past year, with the average delay time being 178 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 Friday 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 14% 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 April 11, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Spain, such as United Airlines,TAP AIR PORTUGAL, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,569 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,569 reviews
United Airlines
7.4
Good
9,569 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
TAP AIR PORTUGAL
7.1
Good
2,197 reviews
United Airlines
7.4
Good
9,569 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Iberia
7.0
Good
3,178 reviews
United Airlines
7.4
Good
9,569 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,909 reviews
United Airlines
7.4
Good
9,569 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,871 reviews
United Airlines
7.4
Good
9,569 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 12h 15m. The distance from Washington, D.C. Dulles Intl Airport to Spain is about 3871 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 American Airlines (85%), Qatar Airways (85%) or Aer Lingus (85%) 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 $387. On average you can expect to pay $836. The most popular route, (Washington, D.C. Dulles Intl - Madrid Barajas), can usually be booked for $499.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Spain (average of $337). Flying from Washington, D.C. Dulles Intl Airport to Spain in June is currently the most expensive (average of $499). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 April 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$198Average$724FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$312Average$777FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$322Average$718FlexibilityNo cancel feeOn-time79%
IberiaCheapest$380Average$775FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$389Average$462FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$406Average$751FlexibilityNo cancel feeOn-time69%
KLMCheapest$409Average$558FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$417Average$570FlexibilityNo cancel feeOn-time77%
FinnairCheapest$423Average$547FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$430Average$700FlexibilityNo cancel feeOn-time77%

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