SEA - MAD

$237 Find Cheap Flights from Seattle to Madrid

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Madrid departing on 4/13. 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, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Madrid.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Madrid.
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$515
Overall average: $748
Scandinavian Airlines
Sat 8/15Thu 8/27
SEA - MAD • 1 stop
Cheapest one-way
$237
Typical prices: $403-$621
Multiple Airlines
Mon 4/13
SEA - MAD • 2 stops
Top airlines
Scandinavian Airlines
Cheapest • from $515 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Madrid. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Copenhagen (CPH)
Cheapest • Avg $552 (round-trip)
Charlotte (CLT)
Shortest trip • 13h 45m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 16% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 38% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Madrid!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Madrid (SEA-MAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Madrid 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 Seattle to Madrid

Sat, Aug 15 - Thu, Aug 27
Scandinavian Airlines Logo
3:55 pm - 12:00 pm
SEA
-
MAD
35h 05m
1 stop
Scandinavian Airlines Logo
12:00 pm - 1:45 pm
MAD
-
SEA
34h 45m
2 stops
$515Scandinavian Airlines
Sun, Apr 26 - Tue, May 5
Multiple Airlines Logo
5:40 pm - 9:55 pm
SEA
-
MAD
19h 15m
1 stop
Multiple Airlines Logo
7:05 am - 3:40 pm
MAD
-
SEA
17h 35m
1 stop
$527Multiple Airlines
Thu, Apr 9 - Thu, Apr 16
Iberia Logo
11:41 am - 2:25 pm
SEA
-
MAD
17h 44m
1 stop
Iberia Logo
1:00 pm - 9:22 pm
MAD
-
SEA
17h 22m
1 stop
$537Iberia
Tue, May 5 - Wed, May 13
Multiple Airlines Logo
6:05 pm - 9:55 pm
SEA
-
MAD
18h 50m
1 stop
Multiple Airlines Logo
7:05 am - 3:40 pm
MAD
-
SEA
17h 35m
1 stop
$572Multiple Airlines
Fri, May 8 - Fri, May 22
Scandinavian Airlines Logo
10:00 am - 9:45 am
SEA
-
MAD
38h 45m
2 stops
Scandinavian Airlines Logo
6:30 pm - 1:45 pm
MAD
-
SEA
28h 15m
1 stop
$573Scandinavian Airlines
Mon, Aug 10 - Tue, Sep 29
American Airlines Logo
6:10 am - 8:20 am
SEA
-
MAD
17h 10m
1 stop
American Airlines Logo
3:25 pm - 10:51 pm
MAD
-
SEA
16h 26m
1 stop
$596American Airlines
Tue, May 5 - Wed, May 13
Scandinavian Airlines Logo
7:15 am - 12:00 pm
SEA
-
MAD
19h 45m
2 stops
Scandinavian Airlines Logo
6:30 pm - 10:55 pm
MAD
-
SEA
37h 25m
2 stops
$598Scandinavian Airlines
Mon, Mar 9 - Thu, Mar 12
Multiple Airlines Logo
6:40 pm - 9:55 pm
SEA
-
MAD
19h 15m
1 stop
Multiple Airlines Logo
7:05 am - 4:40 pm
MAD
-
SEA
17h 35m
1 stop
$605Multiple Airlines
Sat, Aug 22 - Mon, Aug 31
Scandinavian Airlines Logo
3:55 pm - 12:00 pm
SEA
-
MAD
35h 05m
1 stop
Scandinavian Airlines Logo
12:50 pm - 1:45 pm
MAD
-
SEA
33h 55m
1 stop
$606Scandinavian Airlines
Mon, Aug 10 - Tue, Sep 29
United Airlines Logo
1:30 pm - 7:30 pm
SEA
-
MAD
21h 00m
2 stops
United Airlines Logo
1:30 pm - 6:59 pm
MAD
-
SEA
38h 29m
2 stops
$611United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Madrid flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Madrid, 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 Seattle to Madrid is January, where tickets cost $492 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,140 and $1,129 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Madrid, 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 Seattle to Madrid, you should book around 3 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$237
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Seattle to Madrid

When to book flights from Seattle to Madrid

Are your dates flexible? Find out the best times to travel from Seattle to Madrid 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 Seattle to Madrid

  • Does MAD provide medical services to its travelers?

    Yes. The airport has three medical centers in the Arrival Halls of T4 and T2 and Terminal T4 Satellite. There are also 75 Heart Rescue Areas you can visit in case of a heart attack. Four pharmacies are also available Terminal T4, T1, and T2.

  • Can I access financial and communication services at MAD?

    Yes. There are multiple banks in each terminal at the airport and you can find ATMs in the public arrivals lounge in each terminal. The Exact Change also offers currency exchange services in Terminal T1 Baggage Claim Halls 1 and 2. You can opt for Global Exchange company in Terminal T4 Baggage Claim Halls 10 and 11.

  • Which lounges are available at SEA?

    SEA hosts 12 lounges, including all Alaska Airline Lounges, The Club at SEA, and United Club. Exclusive lounges are The Centurion Lounge in Concourse A and B, British Airways Terraces Lounges in South Satellite Terminal, and USO Lounge for active U.S. military members in the Central Terminal.

  • Are there pet-friendly facilities at SEA?

    Yes. SEA is pet-friendly; hence you can bring along your furry friend. There are four pet relief areas at the airport. If you exit through Concourse B, you can utilize the outdoor pet relief areas near the exit. There are pet relief areas on Level 2 of the South Satellite and North Satellite terminals.

  • What is the cheapest flight from Seattle to Madrid?

    In the last 3 days, the lowest price for a flight from Seattle to Madrid was $237 for a one-way ticket and $515 for a round-trip.

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

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

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

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

  • Which airline alliances offer flights from Seattle to Madrid?

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

  • What is the most popular layover when flying to Madrid from Seattle?

    London is the most popular layover city among KAYAK users traveling from Seattle to Madrid.

  • Which is the best airline for flights from Seattle to Madrid, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Seattle to Madrid are Delta and KLM. With an average price for the route of $854 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $906 and an overall rating of 7.7.

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

    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 Seattle to Madrid.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Madrid from Seattle 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 Seattle to Madrid?

    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 Madrid with an airline and back to Seattle with another airline. Booking your flights between Seattle and MAD 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 Seattle to Madrid?

    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 Madrid from Seattle 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 Seattle to Madrid

  • Seattle Tacoma International Airport (SEA) has enhanced accessibility for travelers with physical and hidden disabilities. The airport has amplified phones for the hearing impaired, accessible toilets, ramps, lowered drinking fountains, and adapted lifts with braille signage. Those who need a wheelchair and additional assistance can request it through their airlines. Accessible parking spaces are available in the car park facility at the airport.
  • SEA International Airport has 50 restaurants, cafés, and fast-food outlets where you can sit and dine or grab a bite while waiting for your flight. You can check out Floret-By Café Flora, Beecher’s Handmade Cheese, or Stonehouse Café and Bar in the Main Terminal for quality coffees or snacks. In the North Satellite, you will find Bambuza and Skillet restaurants. If you are craving seafood, visit Dungeness Bay Seafood House in South Satellite.
  • SEA International Airport offers several parking facilities offering various parking services to its travelers. You will access short-term parking services in Terminal Direct parking on Level 4 next to the terminal, while long-term parking services are available on the same parking on Levels 1 to 3 and 5 to 8. On Levels 4 and 5 of the Terminal Direct parking, there are 48 electric vehicle charging spaces.
  • Madrid Barajas International Airport (MAD) provides family-friendly facilities for family travelers. The airport has kids' play areas designated for kids up to 6 years old in all the airport's terminals at the baggage claims. A breastfeeding lounge is available in Terminal T2 and T4.
  • The MAD Airport hosts business facilities offering services to corporate travelers on business or work trips. There is a multi-functional business center on-site in Terminal 4 with formal waiting lounges and meeting rooms and offers courier, fax, and printing services. You will access the internet, workstations, and working breakfast and lunches in the center.

Reviews of the top 5 airlines serving from Seattle to Madrid

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Madrid. 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 Seattle to Madrid? 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.
7.9
DeltaOverall score based on 8243 reviews
8.1Boarding
8.5Crew
7.2Food
7.8Entertainment
7.9Comfort
Airline reviews

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

6.0 GoodAnonymous, Feb 2026
RDU - SEA
Read more Delta reviews

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

two hour delay and the Delta representative on the PA system was unable to understand

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

Safe and stable made me sleepy and I slept and dreamt 😂😂😂😂

I don’t like that an equipment change caused my seat to change from 23A to 44A. The boarding was also delayed. The crew were excellent, however and very attentive. The food was not bad.

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Our flight crew were terrific. And they handle a difficult passenger with finesse.

Excellent, Lima to Paris. But Paris to Amsterdam, delayed, missed my flight and KLM treated its missed flights passengers very badly, terribly bad. No hotel accommodation given. Passengers were told to find their own hotel accommodation and claim at reasonable rate and left the booth and literally with armed Police Officers listening to passengers complains. For three hours, after moving by Uber from hotel to hotel and calling and booking online, no hotel was available. I had to return to the airport and seat/sleep on the benches, suffering the cold, and rats running around until my new allocated flight the next day. It was the most terrible KLM treatment even seen and being a Business Class passenger. Still mentally suffering to date as a result.

3 hour delay but out of their control. App said I get vouchers but when I applied for them, they were nowhere to be found in my account

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

The food was great and the service and attitude was amazing!!

Awful. They didn't even show concern that her connecting flight( Dallas to Mardrid) was gone/missing. I don't understand how that is even possible. Rudest answer from one of the crew was that American Airlines sold the tickets to somebody else. My daughter was not in the list.

Really like the idea experience on this airline I will use again

The pilot was professional and very good. The flight crew, very young and often looked flustered and overwhelmed. The seats were among the most uncomfortable in the air. The boarding somewhat chaotic. The price reasonable. Overall it was an average budget airline experience...although Iberia is not a budget airline. I fear if Iberia doesn't up it's game customers like us will go elsewhere.

It was fine, older plane with limited entertainment, otherwise fine.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

The staff was very nice and helpful. Some of the best crew I have met.

Bad experience. The seat room are very tight. The food is not good and the breakfast has no hot drink.

Excellent. Thanks to United Star Alliance, since economy was overbooked, I’m grateful to have been upgraded to Business Class.

Good plane, excellent food, crew and entertainment. Seats in business could use an upgrade

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

The luggage problem I previously mentioned was actually this flight

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Our Jackson, Mississippi to Dallas Fort Worth flight was delayed on 1/19/26.. This was changed to Jackson to Charlotte in the last minute because of this delay. This started some kind of disconnect between American Airlines and British Airways bookings. We could not go past the passport control in London Heathrow. I had to go to the counter and waited for more than 30 minutes to get a new boarding pass. Problems did not end there. Somehow our entire return flight was canceled by someone. I had to make several phone calls over several days to fix the problem – this was not easy from India. Looks like there was some kind of disconnect between two airlines or some agent did not do it right. I’m anxious to know what went wrong.

Late. And service was very slow - passengers sat for well over an hour with dirty trays etc surrounding them

Getting the boarding passes between the BA and AA apps was very clunky.

Everything you need to know for your flight from Seattle to Madrid

Information on your arrival and departure airports