SEA - MAD

$258 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 4/26. 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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Everything you should know

Cheapest round-trip
$480
Overall average: $855
United Airlines
Wed 4/8Tue 4/14
SEA - MAD • 1 stop
Cheapest one-way
$258
Typical prices: $447-$677
Lufthansa
Sun 4/26
SEA - MAD • 1 stop
Video guide: How to find cheap flights to Madrid
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Top airlines
British Airways
Cheapest • from $486 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 5% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 31% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Wed, Apr 8 - Tue, Apr 14
United Airlines Logo
8:00 am - 8:05 am
SEA
-
MAD
15h 05m1 stop
United Airlines Logo
5:55 am - 12:20 pm
MAD
-
SEA
15h 25m1 stop
$480United Airlines
Sun, Feb 1 - Sun, Feb 15
British Airways Logo
6:50 pm - 10:10 pm
SEA
-
MAD
18h 20m1 stop
British Airways Logo
1:15 pm - 9:57 pm
MAD
-
SEA
17h 42m1 stop
$481British Airways
Mon, Feb 23 - Wed, Mar 11
Multiple Airlines Logo
9:55 pm - 8:00 am
SEA
-
MAD
25h 05m1 stop
Multiple Airlines Logo
6:00 am - 7:59 pm
MAD
-
SEA
21h 59m2 stops
$482Multiple Airlines
Fri, Feb 6 - Mon, Feb 16
British Airways Logo
8:04 am - 2:15 pm
SEA
-
MAD
21h 11m2 stops
British Airways Logo
4:45 pm - 11:30 am
MAD
-
SEA
27h 45m1 stop
$483British Airways
Tue, Apr 7 - Tue, Apr 21
United Airlines Logo
11:59 pm - 8:05 am
SEA
-
MAD
23h 06m2 stops
United Airlines Logo
5:55 am - 12:20 pm
MAD
-
SEA
15h 25m1 stop
$484United Airlines
Thu, Jan 29 - Thu, Feb 12
Multiple Airlines Logo
5:50 am - 8:00 am
SEA
-
MAD
17h 10m2 stops
Multiple Airlines Logo
6:00 am - 12:10 pm
MAD
-
SEA
15h 10m1 stop
$485Multiple Airlines
Fri, Feb 6 - Tue, Feb 10
British Airways Logo
8:04 am - 12:40 pm
SEA
-
MAD
19h 36m2 stops
British Airways Logo
1:15 pm - 10:07 pm
MAD
-
SEA
17h 52m1 stop
$486British Airways
Tue, Apr 28 - Tue, Jun 2
Multiple Airlines Logo
5:50 am - 6:50 am
SEA
-
MAD
16h 00m2 stops
Multiple Airlines Logo
5:55 am - 12:20 pm
MAD
-
SEA
15h 25m1 stop
$487Multiple Airlines
Tue, May 5 - Wed, May 20
Multiple Airlines Logo
7:15 am - 6:50 am
SEA
-
MAD
14h 35m1 stop
Multiple Airlines Logo
5:55 am - 12:20 pm
MAD
-
SEA
15h 25m1 stop
$488Multiple Airlines
Sat, Apr 11 - Sun, Apr 19
Air Canada Logo
8:00 pm - 6:50 am
SEA
-
MAD
25h 50m2 stops
Air Canada Logo
12:45 pm - 9:51 pm
MAD
-
SEA
42h 06m2 stops
$489Air Canada
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.

Find cheap flights to Madrid
Find cheap flights to Madrid

Planning a trip from Seattle to Madrid? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 $584 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,151 and $1,141 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 2 weeks before departure, which saves you about 5% 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$258
Best time to beat the crowds with an average 31% 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 $258 for a one-way ticket and $480 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 $875 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 $895 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 8034 reviews
7.2Food
8.5Crew
7.8Entertainment
7.9Comfort
8.1Boarding
Airline reviews

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

8.0 ExcellentG, Jan 2026
FLL - ATL
Read more Delta reviews

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

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!!

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

Bags took over and hour to come out. Delays due to wind caused rebooking.

The flight was good. We had to spend almost an hour on the tarmac when we arrived in Dallas. Waiting for a gate. What’s the point of arriving early if you have no gate to park at?

Lower WiFi prices; allow us to see our flight on a map; more variety of drink choices.

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

UGH I HAD TO MISS MY FIRST FLIGHT TO TAMPA CAUSE OF THE 10 MINUTE DELAY OF THE ORLANDO TO MIAMI ONE SO THEY HAD ME GET ANOTHER TICKET. I AM NOT HAPPY AT ALL BECAUSE IT MADE ME MISS MY CONNECTING FLIGHT FROM TAMPA TO LONDON AND FORCED ME TO MISS A DAY AT MY ROOM IN THE UK.

Wish they didnt delay off-boarding for 10 minutes so i could connect to my flight from miami to tampa

We experienced gate changes and a long delay. My seat was dirty when I boarded and I had to use wipes to clean it myself. There was an unpleasant and overpowering cleaning product scent on the plane as well that lingered through the flight.

Seats were much more cramped then on the 737. Narrower and rows closer together. Flight was absolutely packed and the plugs under the seats didn't work. Was forced to check my bag even though previous flight had no issue with it.

Good food & refreshment. The seats and entrainment screens are modern compared to others. The staff though pleasant serve and attend to passengers based on nationality. Some get served first others last regardless of their seating positions.

It was fine. My connection in Charlotte to go to WPB was too late and I had to spend the night in the Charlotte Airport in the mini suites.

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

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

We departed late but made up most of the time in flight. Our ticket was pure economy, so it wasn’t anything fancy; however, I heard that we arrived in Madrid at the exact same time that First Class passengers arrived! Overall, our experience was similar to what we had on other American Airlines transatlantic flights - good value at a reasonable price. We were even able to get our carry-on baggage onto the plane without needing to gate check it.

Flight was OK. Waiting for luggage in Madrid for 55 minutes, unacceptable

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

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.

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

The plane was dirty the food was awful and the boarding process took too long

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

Boarding was poor. All groups called immediately one after the other resulting in a long queue in the jetty/jet bridge. Seats were very hard and and did not recline on a 4.5 hour flight. No food was available. Plane was cold. There was no entertainment.

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

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

Information on your arrival and departure airports