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Cheap flights from Madrid, Spain to Seattle from £428

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 29/12. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — SEA
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Madrid to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Madrid (MAD) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 November 2025.

Round-trip from

£441

One-way from

£428

Popular in

August

Cheapest in

February

Average price

£586
23/4-10/5
  • 23/4-10/5
  • 2 total stops
  • 36h 50m total
  • Madrid to Seattle
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29/12
  • 29/12
  • 1 total stop
  • 17h 31m total
  • Madrid to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£50 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find flight deals from Madrid to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Madrid to Seattle
Explore the most affordable flight options available from Madrid to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 November 2025.

Fri 12/1208:35MAD - SEA
2 stops23h 40mUnited Airlines
Thu 15/107:00SEA - MAD
2 stops17h 15mUnited Airlines
Deal found 4/11£601
Sat 13/1206:00MAD - SEA
1 stop15h 10mUnited Airlines
Fri 16/108:10SEA - MAD
2 stops23h 00mUnited Airlines
Deal found 4/11£614
Thu 20/1106:00MAD - SEA
1 stop15h 10mUnited Airlines
Wed 3/1207:00SEA - MAD
1 stop17h 15mUnited Airlines
Deal found 4/11£620
Thu 27/1106:00MAD - SEA
1 stop14h 45mDelta
Mon 8/1211:50SEA - MAD
2 stops18h 30mDelta
Deal found 5/11£624
Thu 27/1106:00MAD - SEA
1 stop14h 45mMultiple Airlines
Tue 9/1213:40SEA - MAD
1 stop19h 00mMultiple Airlines
Deal found 5/11£625
Tue 25/1106:00MAD - SEA
1 stop14h 45mDelta
Mon 8/1214:05SEA - MAD
1 stop16h 15mDelta
Deal found 3/11£626
Mon 1/1207:05MAD - SEA
1 stop17h 35mMultiple Airlines
Thu 4/1217:40SEA - MAD
1 stop19h 15mMultiple Airlines
Deal found 4/11£628
Thu 27/1106:00MAD - SEA
2 stops22h 00mDelta
Sun 30/1109:43SEA - MAD
2 stops21h 22mDelta
Deal found 5/11£633
Wed 26/1113:45MAD - SEA
1 stop31h 25mUnited Airlines
Tue 9/1208:10SEA - MAD
1 stop14h 55mUnited Airlines
Deal found 5/11£634

Cheapflights Fare Finder

 
Customise your flight search to find flights from Madrid to Seattle 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 858,174 searches. Data last updated 6 November 2025.
Use the filters below to find and compare flights from Madrid to Seattle that are best for you.

Fly from

Madrid

Fly to

Seattle

Route

Depart

Return

Price

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Tue 13/1

16:50-11:50

1 stop28h 00m

Seattle/Tacoma Intl

Mon 19/1

14:10-17:40

1 stop18h 30m

£554

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Tue 13/1

11:00-21:49

2 stops19h 49m

Seattle/Tacoma Intl

Mon 19/1

06:05-11:30

2 stops20h 25m

£558

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Thu 26/3

06:00-12:35

1 stop14h 35m

Seattle/Tacoma Intl

Thu 9/4

13:30-15:35

1 stop17h 05m

£599

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Thu 26/3

06:00-18:58

2 stops20h 58m

Seattle/Tacoma Intl

Thu 9/4

14:10-23:30

1 stop24h 20m

£618

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Thu 26/3

06:00-13:10

1 stop15h 10m

Seattle/Tacoma Intl

Sat 11/4

23:50-06:40

2 stops21h 50m

£619

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Thu 26/3

06:00-13:10

1 stop15h 10m

Seattle/Tacoma Intl

Mon 6/4

23:50-06:40

2 stops21h 50m

£619

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Mon 29/12

12:40-21:11

1 stop17h 31m

£428

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Sun 28/12

05:55-21:07

3 stops24h 12m

£4,161

MadridSeattle

MAD - SEA

MADSEA

Madrid Barajas

Wed 25/3

17:20-21:54

3 stops36h 34m

£7,697

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Best time to book a flight from Madrid to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Madrid with our price prediction graph.
Estimated return 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 Madrid to Seattle

How far ahead should I book a flight from Madrid to Seattle?

Use this chart to determine the optimal time to book a return flight from Madrid to Seattle. Price data was last updated on 31 October 2025.

Booking 13 days in advance of your planned departure date is, on average, the best time to get cheap flights from Madrid to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Madrid to Seattle?

Currently, February is the cheapest month in which you can book a flight from Madrid to Seattle (average of £433). Flying from Madrid to Seattle in July is currently the most expensive (average of £666). 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.

How much does it cost for a return flight from Madrid to Seattle?

Related info for your journey

Find useful and relevant information for your journey from Madrid to Seattle. 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 Madrid to Seattle?

    Airlines like Delta fly from Madrid to Seattle in about 19h 49m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 5292 mi.

  • Can I find deals for flights from Madrid to Seattle that include hotel bookings?

    Yes. In addition to deals on Madrid to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Madrid to Seattle?

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

  • Can I find deals for business class flights from Madrid to Seattle?

    Yes. Cheapflights offers flight deals from Madrid to Seattle 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 Madrid to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Madrid to Seattle (average of £433). Flying from Madrid to Seattle in July is currently the most expensive (average of £666). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

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Why should you use Cheapflights to find cheap flight tickets from Madrid to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Madrid to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Madrid to Seattle with no change fees?

Yes, we can. To see specific flights from Madrid to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Madrid to Seattle become cheaper?

Of course! You can now track prices for flights from Madrid to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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