HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$351+ Cheap flights from Spain to Dulles Intl (IAD)

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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — IAD
May 7 — May 141
Thu 5/7
Thu 5/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Spain to Dulles Intl with Cheapflights

1. Tell us where you want to go

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

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Spain to Dulles Intl

Cheapest flights from Spain to Dulles Intl
Explore the most affordable flight options available from Spain to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 7, 2026.

This Mytrip deal was found by Cheapflights users on 4/2. 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.
Thu 4/166:00 am
BCN
-
IAD
1 stop15h 10m
TAP AIR PORTUGAL
Thu 4/3010:35 pm
IAD
-
BCN
1 stop17h 15m
TAP AIR PORTUGAL
Deal found 4/2$520
This Flightnetwork deal was found by Cheapflights users on 4/3. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 am
BCN
-
IAD
1 stop15h 10m
TAP AIR PORTUGAL
Thu 4/305:45 pm
IAD
-
BCN
1 stop19h 35m
TAP AIR PORTUGAL
Deal found 4/3$522
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 4/276:15 am
VLC
-
IAD
1 stop15h 15m
Iberia
Mon 5/115:00 pm
IAD
-
VLC
1 stop10h 05m
Iberia
Deal found 4/4$538
This British Airways deal was found by Cheapflights users on 4/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/79:15 am
BIO
-
IAD
1 stop12h 15m
Multiple Airlines
Mon 5/115:00 pm
IAD
-
BIO
1 stop13h 45m
Multiple Airlines
Deal found 4/5$539
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:15 am
VLC
-
IAD
1 stop15h 15m
American Airlines
Mon 5/115:00 pm
IAD
-
VLC
1 stop10h 05m
American Airlines
Deal found 4/6$539
This American Airlines deal was found by Cheapflights users on 4/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:45 am
ALC
-
IAD
1 stop11h 45m
Multiple Airlines
Mon 4/275:00 pm
IAD
-
ALC
1 stop10h 10m
Multiple Airlines
Deal found 4/3$540
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:10 am
AGP
-
IAD
1 stop12h 20m
Iberia
Thu 5/285:00 pm
IAD
-
AGP
1 stop13h 45m
Iberia
Deal found 4/6$541
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Thu 4/236:00 am
BCN
-
IAD
1 stop15h 10m
TAP AIR PORTUGAL
Sun 4/2610:35 pm
IAD
-
BCN
1 stop12h 20m
TAP AIR PORTUGAL
Deal found 4/5$542
This American Airlines deal was found by Cheapflights users on 4/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:45 am
ALC
-
IAD
1 stop11h 45m
American Airlines
Mon 4/275:00 pm
IAD
-
ALC
1 stop14h 05m
American Airlines
Deal found 4/2$543
This British Airways deal was found by Cheapflights users on 4/4. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:15 am
VLC
-
IAD
1 stop15h 15m
Multiple Airlines
Mon 5/115:35 pm
IAD
-
VLC
1 stop20h 10m
Multiple Airlines
Deal found 4/4$544
This Expedia deal was found by Cheapflights users on 4/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/219:10 am
AGP
-
IAD
1 stop12h 20m
Iberia
Tue 5/265:00 pm
IAD
-
AGP
2 stops17h 00m
Iberia
Deal found 4/3$544
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:55 pm
AGP
-
IAD
1 stop21h 50m
Aer Lingus
Sat 5/165:15 pm
IAD
-
AGP
1 stop12h 15m
Aer Lingus
Deal found 4/6$545

Find flight deals from Spain to Dulles Intl

Keep the following information in mind while searching for Spain to Dulles Intl flight deals. Data was last updated April 7, 2026.

Round-trip from

$522
(Flightnetwork)

One-way from

$351
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$623

Good round-trip deal

$803 or less

Good one-way deal

$409 or less
From Spain to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Spain to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 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 Spain to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Spain to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Spain to Dulles Intl 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 7, 2026.
Use the filters below to find and compare flights from Spain to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BilbaoWashington, D.C.

BIO - IAD

BIOIAD

Bilbao

Thu 5/7

9:15 am-3:30 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

Mon 5/11

5:00 pm-12:45 pm

1 stop13h 45m

$539

AlicanteWashington, D.C.

ALC - IAD

ALCIAD

Alicante

Mon 4/20

9:45 am-3:30 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Mon 4/27

5:00 pm-1:05 pm

1 stop14h 05m

$543

ValenciaWashington, D.C.

VLC - IAD

VLCIAD

Valencia

Mon 4/27

6:15 am-3:30 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Mon 5/11

5:35 pm-7:45 pm

1 stop20h 10m

$544

AlicanteWashington, D.C.

ALC - IAD

ALCIAD

Alicante

Mon 4/20

9:30 pm-6:41 pm

2 stops27h 11m

Washington, D.C. Dulles Intl

Mon 4/27

5:00 pm-9:10 am

1 stop10h 10m

$549

BilbaoWashington, D.C.

BIO - IAD

BIOIAD

Bilbao

Mon 4/20

9:35 pm-3:30 pm

1 stop23h 55m

Washington, D.C. Dulles Intl

Mon 4/27

5:00 pm-4:55 pm

1 stop17h 55m

$550
Quickest round-trip

ValenciaWashington, D.C.

VLC - IAD

VLCIAD

Valencia

Sat 5/2

6:15 am-3:30 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Sat 5/9

5:00 pm-9:05 am

1 stop10h 05m

$574

AlicanteWashington, D.C.

ALC - IAD

ALCIAD

Alicante

Thu 5/7

9:30 pm-11:59 pm

2 stops32h 29m

Washington, D.C. Dulles Intl

Mon 5/11

9:19 am-9:10 am

2 stops17h 51m

$574

AlicanteWashington, D.C.

ALC - IAD

ALCIAD

Alicante

Tue 5/5

9:45 am-8:20 pm

2 stops16h 35m

Washington, D.C. Dulles Intl

Tue 5/12

5:00 pm-1:05 pm

1 stop14h 05m

$578

ValenciaWashington, D.C.

VLC - IAD

VLCIAD

Valencia

Thu 9/10

5:25 pm-2:30 pm

1 stop27h 05m

Washington, D.C. Dulles Intl

Sat 9/19

4:30 pm-4:35 pm

1 stop18h 05m

$583

ValenciaWashington, D.C.

VLC - IAD

VLCIAD

Valencia

Thu 4/30

5:40 pm-3:30 pm

1 stop27h 50m

Washington, D.C. Dulles Intl

Sun 5/3

5:00 pm-9:05 am

1 stop10h 05m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Spain to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Spain 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 Spain to Washington, D.C. Dulles Intl Airport

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

Currently, September is the cheapest month in which you can book a flight from Spain to Washington, D.C. Dulles Intl Airport (average of $307). Flying from Spain to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $627). 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 ES to IAD?

Find hourly flight availability from Spain to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 7, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Spain to Washington, D.C. Dulles Intl Airport as you normally would.

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

Explore weekly flight availability from Spain to Dulles Intl. 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 7, 2026.

The most flights from ES0 to IAD are scheduled on a Monday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

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

About 14% of weekly flights between Spain and Washington, D.C. have experienced delays in the past year, with the average delay time being 169 minutes.

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

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

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

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

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

Over the last year, Iberia have had the lowest number of delays on this route, with just 8% of flights being delayed.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated April 7, 2026.
See what other customers who have flown with United Airlines,TAP AIR PORTUGAL, andIberia from Spain to Washington, D.C. Dulles Intl Airport 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
9,548 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,548 reviews
United Airlines
7.4
Good
9,548 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
TAP AIR PORTUGAL
7.1
Good
2,190 reviews
United Airlines
7.4
Good
9,548 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Iberia
7.0
Good
3,165 reviews
United Airlines
7.4
Good
9,548 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Lufthansa
6.8
Okay
7,894 reviews
United Airlines
7.4
Good
9,548 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Spain to Dulles Intl. 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 Spain to Washington, D.C. Dulles Intl Airport?

    Airlines like TAP AIR PORTUGAL, American Airlines, and ITA Airways fly from Spain to Washington, D.C. Dulles Intl Airport in about 11h 45m. The time it takes to get you to your destination can typically vary by up to 15h 55m. Airlines will cover a distance of 4014 mi. This flight may include one or multiple stops.

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

    $286 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on American Airlines and Iberia, with prices starting from $287 and $323, respectively.

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

    When deciding which route to take from Spain to Washington, D.C. Dulles Intl Airport consider Madrid Barajas - Washington, D.C. Dulles Intl, Barcelona-El Prat - Washington, D.C. Dulles Intl or Malaga - Washington, D.C. Dulles Intl as they are the most popular.

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

    The top 3 most reliable airlines when flying from Spain to Washington, D.C. Dulles Intl Airport are American Airlines (93%), Qatar Airways (93%) and Aer Lingus (93%).

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

    While on average a flight from Spain to Washington, D.C. Dulles Intl Airport is generally $1,424, our data shows the cheapest flight currently is $370. When looking at the most popular route, (Madrid Barajas - Washington, D.C. Dulles Intl), you can expect to pay $525 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Spain to Dulles Intl 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 Spain to Washington, D.C. Dulles Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Spain to Washington, D.C. Dulles Intl Airport (average of $307). Flying from Spain to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $627). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Owings Mills
Springfield
Arlington
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Largo
Bowie
Clinton
Towson
Cordova
Manassas
Falls Church

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 4 airlines flying from Spain to Dulles Intl

Discover the top 4 airlines that operate flights from Spain to Dulles Intl. 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 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$477Average$680FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$498Average$727FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$554Average$946FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$593Average$886FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights