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$229+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — MAD
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
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 July 23, 2026.

This Gotogate deal was found by Cheapflights users on 7/20. 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.
Mon 8/2410:35 pm
IAD
-
SVQ
1 stop28h 55m
TAP AIR PORTUGAL
Wed 9/910:15 am
SVQ
-
IAD
1 stop10h 55m
TAP AIR PORTUGAL
Deal found 7/20$572
This Cheapflightsfares deal was found by Cheapflights users on 7/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:35 pm
IAD
-
SVQ
1 stop19h 50m
TAP AIR PORTUGAL
Fri 9/186:30 am
SVQ
-
IAD
1 stop13h 55m
TAP AIR PORTUGAL
Deal found 7/19$575
This oojo deal was found by Cheapflights users on 7/19. 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.
Wed 10/145:45 pm
IAD
-
BIO
1 stop11h 45m
TAP AIR PORTUGAL
Sun 11/16:40 pm
BIO
-
IAD
1 stop26h 35m
TAP AIR PORTUGAL
Deal found 7/19$575
This oojo deal was found by Cheapflights users on 7/21. 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 10/65:05 pm
IAD
-
SVQ
1 stop25h 20m
TAP AIR PORTUGAL
Wed 10/146:30 am
SVQ
-
IAD
1 stop14h 40m
TAP AIR PORTUGAL
Deal found 7/21$578
This oojo deal was found by Cheapflights users on 7/22. 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 10/1310:35 pm
IAD
-
ALC
1 stop13h 30m
TAP AIR PORTUGAL
Wed 10/217:05 pm
ALC
-
IAD
1 stop26h 05m
TAP AIR PORTUGAL
Deal found 7/22$578
This oojo deal was found by Cheapflights users on 7/21. 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 8/1710:35 pm
IAD
-
BIO
1 stop13h 25m
TAP AIR PORTUGAL
Sun 8/237:45 pm
BIO
-
IAD
1 stop25h 25m
TAP AIR PORTUGAL
Deal found 7/21$578
This lol.travel deal was found by Cheapflights users on 7/22. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/710:35 pm
IAD
-
BIO
1 stop13h 25m
TAP AIR PORTUGAL
Tue 9/226:50 pm
BIO
-
IAD
1 stop26h 20m
TAP AIR PORTUGAL
Deal found 7/22$579
This FlightHub deal was found by Cheapflights users on 7/19. 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.
Fri 11/610:30 pm
IAD
-
SVQ
1 stop19h 15m
TAP AIR PORTUGAL
Sun 11/1510:00 am
SVQ
-
IAD
1 stop16h 35m
TAP AIR PORTUGAL
Deal found 7/19$583
This FlightHub deal was found by Cheapflights users on 7/22. 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 10/125:40 pm
IAD
-
ALC
1 stop10h 50m
TAP AIR PORTUGAL
Wed 10/217:05 pm
ALC
-
IAD
1 stop26h 05m
TAP AIR PORTUGAL
Deal found 7/22$583
This FlightHub deal was found by Cheapflights users on 7/19. 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.
Sun 9/135:40 pm
IAD
-
BIO
1 stop12h 00m
TAP AIR PORTUGAL
Sun 9/277:45 pm
BIO
-
IAD
1 stop25h 25m
TAP AIR PORTUGAL
Deal found 7/19$583
This Travelis deal was found by Cheapflights users on 7/19. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:40 pm
IAD
-
TFS
1 stop13h 35m
TAP AIR PORTUGAL
Tue 9/221:05 pm
TFS
-
IAD
1 stop12h 30m
TAP AIR PORTUGAL
Deal found 7/19$584
This oojo deal was found by Cheapflights users on 7/22. 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.
Wed 10/2811:30 pm
IAD
-
SVQ
1 stop19h 15m
TAP AIR PORTUGAL
Wed 11/114:00 pm
SVQ
-
IAD
1 stop29h 15m
TAP AIR PORTUGAL
Deal found 7/22$585

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 July 23, 2026.

Round-trip from

$572
(Gotogate)

One-way from

$229
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,195

Good round-trip deal

$803 or less

Good one-way deal

$468 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. 29% potential increase in price ($339 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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.
Search Deals

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 July 23, 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.Madrid

IAD - MAD

IADMAD

Washington, D.C. Dulles Intl

Wed 10/14

8:15 am-9:35 am

2 stops19h 20m

Madrid Barajas

Wed 10/21

12:45 pm-4:01 pm

2 stops33h 16m

$694

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 11/4

6:40 pm-5:00 pm

1 stop16h 20m

Barcelona-El Prat

Wed 11/11

6:00 am-3:55 pm

1 stop15h 55m

$709

Washington, D.C.Madrid

IAD - MAD

IADMAD

Washington, D.C. Dulles Intl

Sun 10/11

6:15 pm-8:05 am

Nonstop7h 50m

Madrid Barajas

Mon 10/19

8:25 am-1:35 pm

1 stop35h 10m

$715

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Sun 1/17

6:05 pm-3:50 pm

1 stop15h 45m

Valencia

Thu 1/21

12:00 pm-3:40 pm

1 stop33h 40m

$731

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Wed 10/28

7:59 pm-4:10 pm

2 stops15h 11m

Valencia

Wed 11/18

6:00 am-3:55 pm

1 stop15h 55m

$735

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Tue 10/20

6:15 pm-11:35 am

1 stop11h 20m

Valencia

Tue 10/27

6:00 am-11:11 pm

2 stops22h 11m

$740

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 11/10

7:59 pm-5:25 pm

2 stops15h 26m

Bilbao

Wed 11/18

6:50 am-7:10 pm

2 stops18h 20m

$740

Washington, D.C.Alicante

IAD - ALC

IADALC

Washington, D.C. Dulles Intl

Thu 8/20

10:35 pm-6:05 pm

1 stop13h 30m

Alicante

Mon 8/31

7:35 pm-3:10 pm

1 stop25h 35m

$742

Washington, D.C.Valencia

IAD - VLC

IADVLC

Washington, D.C. Dulles Intl

Tue 9/8

9:45 pm-9:55 am

1 stop30h 10m

Valencia

Tue 10/6

6:55 pm-7:50 pm

1 stop30h 55m

$744

Washington, D.C.Madrid

IAD - MAD

IADMAD

Washington, D.C. Dulles Intl

Tue 10/13

6:15 pm-8:05 am

Nonstop7h 50m

Madrid Barajas

Sat 10/17

5:55 am-8:00 pm

1 stop20h 05m

$746

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Spain (average of $587). Flying from Washington, D.C. Dulles Intl Airport to Spain in June is currently the most expensive (average of $1,162). 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 July 23, 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 July 23, 2026.

The most flights from IAD to ES0 are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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

About 17% of weekly flights between Washington, D.C. and Spain have experienced delays in the past year, with the average delay time being 192 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?

Monday 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 12% of flights being delayed.

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Spain?

The best time to book flights from Washington, D.C. Dulles Intl Airport to Spain is 14 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 July 23, 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
10,024 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
10,024 reviews
United Airlines
7.4
Good
10,024 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
TAP AIR PORTUGAL
7.2
Good
2,342 reviews
United Airlines
7.4
Good
10,024 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Iberia
7.0
Good
3,258 reviews
United Airlines
7.4
Good
10,024 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Lufthansa
6.8
Okay
8,159 reviews
United Airlines
7.4
Good
10,024 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
British Airways
6.7
Okay
8,127 reviews
United Airlines
7.4
Good
10,024 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 16h 20m. The distance from Washington, D.C. Dulles Intl Airport to Spain is about 4046 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 Turkish Airlines and Royal Air Maroc, 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 (87%), Qatar Airways (87%) or Aer Lingus (87%) 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 $324. On average you can expect to pay $2,557. The most popular route, (Washington, D.C. Dulles Intl - Madrid Barajas), can usually be booked for $498.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Spain (average of $587). Flying from Washington, D.C. Dulles Intl Airport to Spain in June is currently the most expensive (average of $1,162). 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

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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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$312Average$779FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$389Average$746FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$390Average$463FlexibilityNo cancel feeOn-time76%
KLMCheapest$409Average$558FlexibilityNo cancel feeOn-time75%
IberiaCheapest$417Average$866FlexibilityNo cancel feeOn-time77%
FinnairCheapest$423Average$642FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$435Average$842FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$439Average$620FlexibilityNo cancel feeOn-time77%
DeltaCheapest$455Average$844FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$462Average$518FlexibilityNo cancel feeOn-time72%

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