MAD - SEA

$348 Find Cheap Flights from Madrid to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Madrid to Seattle departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Madrid to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Madrid to Seattle, as well as popular online travel agencies
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Cheap Flights from Madrid to Seattle (MAD-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Madrid to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Madrid to Seattle

Tue, Sep 9 - Tue, Sep 30
Brussels Airlines Logo
12:30 pm - 10:59 amMAD-SEA
31h 29m1 stop
Brussels Airlines Logo
12:00 pm - 8:20 amSEA-MAD
35h 20m1 stop
$663Brussels Airlines
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Wed, Aug 27 - Sun, Sep 7
United Airlines Logo
6:00 am - 11:55 amMAD-SEA
14h 55m1 stop
United Airlines Logo
10:55 pm - 8:05 amSEA-MAD
24h 10m1 stop
$673United Airlines
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Mon, Sep 29 - Mon, Oct 6
British Airways Logo
1:45 pm - 10:04 pmMAD-SEA
17h 19m1 stop
British Airways Logo
8:20 pm - 7:40 pmSEA-MAD
14h 20m1 stop
$681British Airways
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Mon, Aug 25 - Wed, Sep 3
KLM Logo
8:25 pm - 3:55 pmMAD-SEA
28h 30m1 stop
KLM Logo
2:10 pm - 1:40 pmSEA-MAD
14h 30m1 stop
$684KLM
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Tue, Oct 7 - Wed, Nov 19
Delta Logo
6:00 am - 4:20 pmMAD-SEA
19h 20m2 stops
Delta Logo
11:15 am - 3:25 pmSEA-MAD
19h 10m2 stops
$685Delta
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Tue, Oct 7 - Wed, Nov 19
Air Canada Logo
12:45 pm - 7:31 pmMAD-SEA
15h 46m1 stop
Air Canada Logo
8:20 pm - 8:05 amSEA-MAD
26h 45m2 stops
$687Air Canada
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Wed, Sep 3 - Sun, Sep 21
Delta Logo
6:00 am - 11:45 amMAD-SEA
14h 45m1 stop
Delta Logo
9:55 pm - 7:50 amSEA-MAD
24h 55m1 stop
$688Delta
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Mon, Aug 25 - Fri, Sep 5
KLM Logo
8:25 pm - 3:55 pmMAD-SEA
28h 30m1 stop
KLM Logo
1:55 pm - 1:40 pmSEA-MAD
14h 45m1 stop
$701KLM
Find Deal
Fri, Sep 5 - Sat, Sep 13
Air Canada Logo
12:45 pm - 6:36 pmMAD-SEA
38h 51m2 stops
Air Canada Logo
7:15 pm - 8:20 amSEA-MAD
28h 05m2 stops
$716Air Canada
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Mon, Aug 25 - Mon, Sep 1
British Airways Logo
12:10 pm - 11:10 amMAD-SEA
32h 00m1 stop
British Airways Logo
8:20 pm - 9:40 amSEA-MAD
28h 20m1 stop
$736British Airways
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KAYAK's insights & trends for Madrid to Seattle flights

Get data-powered insights and trends into flights from Madrid to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Madrid to Seattle?

The average price of all round-trip flights from Madrid to Seattle clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Seattle on a Saturday and more expensive on a Tuesday. On your return trip to Madrid, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

What is the cheapest month to fly from Madrid to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Madrid to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Madrid to Seattle is February, where tickets cost $654 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,054 and $990 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Madrid to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Madrid to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonMarch
High seasonAugust
Cheapest flight$348
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Madrid to Seattle

When to book flights from Madrid to Seattle

Are your dates flexible? Find out the best times to travel from Madrid to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Madrid to Seattle

  • Which other cities can I connect from Seattle-Tacoma International Airport?

    Apart from Seattle, a number of other cities are served by Seattle-Tacoma International Airport (SEA). Three of these cities, which you can easily connect to from SEA, include Bellevue, Tacoma, and Everett. Car rentals provide the most convenient means of transport from the airport to these cities.

  • What special services are available in flights from Madrid to Seattle?

    If you book American Airlines, you will have the opportunity to get special diets or kids’ meals for your young ones when flying from MAD to SEA. All airlines along this route offer wheelchair services, which makes them accommodating to persons with reduced mobility.

  • How eco-friendly are flights from Madrid to Seattle?

    Delta and American Airlines are among the most eco-friendly airlines flying from Madrid to Seattle. These airlines have a clear program aimed at reducing its carbon emission by adopting fuel efficient engines for all its planes. Therefore, if you are booking any of these, you can fly to Seattle from Madrid while reducing your carbon print.

  • How do travelers landing to Seattle International Airport (SEA) from Madrid International Airport get out of the airport?

    When planning your flight from Madrid to Seattle you will need to know what transport alternatives are available once you arrive at Seattle-Tacoma International Airport (SEA). Passengers leaving the airport can take buses, car rental, or taxis. If you prefer to rent a car, try making a reservation before arriving at the airport.

  • What is the cheapest flight from Madrid to Seattle?

    In the last 3 days, the lowest price for a flight from Madrid to Seattle was $348 for a one-way ticket and $663 for a round-trip.

  • Do I need a passport to fly between Madrid and Seattle?

    Yes, you’ll need a passport to travel to Seattle from Madrid.

  • Which airports will I be using when flying from Madrid to Seattle?

    Madrid and Seattle are both served by 1 main airport. You will leave Madrid from Madrid Barajas and will be arriving at Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Madrid to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Madrid to Seattle?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Madrid and Seattle, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Madrid to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Madrid to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Madrid to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Madrid is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Madrid to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Madrid with another airline. Booking your flights between Madrid and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Madrid to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Madrid up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Madrid to Seattle

  • Flights from Madrid to Seattle have Madrid-Barajas Airport (MAD) as the sole departure airport. Although most of the flights have Seattle-Tacoma International Airport (SEA) as the destination airport, you can fly along the less popular route. This route has Seattle Lake Union SPB (LKE) as the arrival airport, on which you are more likely to get cheaper flight deals.
  • To reach Madrid-Barajas Airport (MAD) from Downtown Madrid, use the efficient metro system. Take Line 8 (Pink) from Nuevos Ministerios or Line 10 (Dark Blue) from Plaza de España to reach Terminal 1, 2, 3, or 4. Alternatively, taxis, airport shuttles, and buses also provide convenient transport options.
  • You can fly directly from Madrid to Seattle or use flights with layovers, which are usually cheaper than the most sought after nonstop flights. British Airways and American Airlines are some of the airlines offering connecting flights, with London Heathrow Airport (LHR) and Chicago O’Hare Intl Airport (ORD) serving as the common layover airports.
  • If you are flying from Madrid to Seattle with your children, you will need an airline that has some of the best kid friendly services or amenities. United Airlines tops the list of the airlines to consider while flying with children. Compared to other airlines on this route, it has the most extra legroom and spacious seats in all its cabins, which ensures you and your kids remain comfortable all journey long.
  • Booking Air Europa Airlines, which has SEA as the operating base, gives you access to flights that are convenient to your travel schedules. This is because this airline has a high frequency of daily flights to SEA from MAD.

Reviews of the top 3 airlines serving from Madrid to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Madrid to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Madrid to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7964 reviews
8.5Crew
7.9Entertainment
8.2Boarding
7.9Comfort
7.3Food
Airline reviews

I like for how they process during check in. It was very smoothly.

10.0 ExcellentAbdulla, Jun 2025CMH - JFK
Read more Delta reviews

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

Much better than the major US Carriers especially in Biz Class.

I wish that the meal included a vegetable or even a salad instead of couscous! Why serve chicken with rice AND couscous? Service was good overall though a bit lacking in friendliness. Usually on air france I've been offered a glass of champagne before dinner, wine with dinner, and a digestif after dinner. We were only offered wine this time!

It was not Air France but Air Europa. But confusion over our checked luggage. Whether it was checked all the way to Tenerife or not. It was not. Had to line up again in Departures. At least our Sky Priority was honoured. Flight was fine.

My wife and I had a row to ourselves after moving seats. There were no TVs and you had to buy food. So we did nothing but had a quick nap. Flight was fine.

The plane was old Only 3 bathrooms available for economy The entertainment was old and the selection was poor

Georgian Airways check in staff initially denied us, because they thought passengers required transit visas to transfer on connecting flights. This required 70 minutes for them to call multiple people to confirm how transfers worked. They did not apologize once accepting our check in. Onboard, the four hour flight gave stale bread with spam slices as lunch. The only included drinks were still or sparkling water.

I did not get my baggage at my final destination..poor coordination with connecting flights with partner airlines (Saudi airways). Also the food was very mediocre.

Not a good one this time. The absence of internet without any information/notification ahead was really the unacceptable part. Also this new A350-900 has a serious legroom challenge for economy seats. It’s more like a medium-haul flight legroom configuration.

Food was terrible, tasteless. I ordered ovo lacto special menu in business class and got vegan tasteless food instead. Really disappointing.

Awful. The flight wasn't actually operated by Iberia, but by American Airlines. I was unable to get my boarding pass and as a result missed my connecting flight.

Very good service from San Jose to Madrid . Ryanair service from Madrid to Brussels 😕

I wish they could put the pre-tsa check on the tickets or global entry.

Couldn’t keep my luggage and had no choice. Ground staff didn’t even bother to explain why.

We upgraded to Business class paying approx. $1,300. Despite the upgrade, we were still required to pay an additional €70 for a checked bag. Furthermore, we were informed that another €70 would have been charged for our carry-on bag, as it was 3kg over the limit. To avoid this, we had to move clothing from the carry-on into the checked bag, which was both inconvenient and frustrating. Given the significant amount paid for the Business Class upgrade, we found this treatment to be quite appalling and disappointing. We expected a higher level of service and consideration for our luggage, and this experience did not meet those expectations.

Great flight, short and good attention. Didn't took any food so can't say thing about it

Excellent with no delays and according to the time schedule.

Its a bus taking you on and off the plane so if you have big luggage … more muscles needed

Flight LIN MAD. Checkin was fine (but I must admit that being a Platinum member I skip the lines). Security was fine (they have the new machines where you need not take laptops or liquids out). Longe was OK (BA). Boarding was a mess, the boarding gate personnel were rude and some should simply not be in a customer facing position. Flight in itself was fine, usual Iberia European coach. We were on time and actually time to deliver luggage was better than normal for Barajas

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