STL - MAD

$417 Find Cheap Flights from St. Louis to Madrid

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Madrid departing on 1/31. 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 St. Louis to Madrid.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Madrid.
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Everything you should know

Cheapest round-trip
$417
Typical prices: $648-$939
Air Canada
Sat 1/31Fri 2/13
STL - MAD • 2 stops
Cheapest one-way
$463
Typical prices: $736-$1,088
WestJet
Fri 5/22
STL - MAD • 2 stops
When to travel
November
Cheapest • 32% 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 St. Louis to Madrid (STL-MAD)

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

Sat, Jan 31 - Fri, Feb 13
Air Canada Logo
4:05 pm - 12:05 pmSTL-MAD
37h 00m2 stops
Air Canada Logo
1:35 pm - 9:00 pmMAD-STL
38h 25m2 stops
$417Air Canada
Find Deal
Wed, Jan 21 - Wed, Jan 28
British Airways Logo
2:54 pm - 1:35 pmSTL-MAD
15h 41m2 stops
British Airways Logo
12:40 pm - 10:59 pmMAD-STL
17h 19m1 stop
$427British Airways
Find Deal
Tue, Mar 10 - Tue, Mar 17
Iberia Logo
2:00 pm - 8:55 amSTL-MAD
12h 55m1 stop
Iberia Logo
12:00 pm - 11:48 pmMAD-STL
17h 48m1 stop
$428Iberia
Find Deal
Mon, Jan 12 - Mon, Jan 19
British Airways Logo
11:55 am - 11:55 amSTL-MAD
17h 00m2 stops
British Airways Logo
7:25 pm - 9:15 pmMAD-STL
32h 50m2 stops
$432British Airways
Find Deal
Wed, Jan 21 - Wed, Jan 28
Iberia Logo
2:54 pm - 10:20 amSTL-MAD
12h 26m1 stop
Iberia Logo
1:15 pm - 10:44 pmMAD-STL
16h 29m1 stop
$438Iberia
Find Deal
Sat, Jan 31 - Fri, Feb 13
British Airways Logo
5:04 pm - 9:25 amSTL-MAD
33h 21m1 stop
British Airways Logo
1:00 pm - 7:30 pmMAD-STL
13h 30m1 stop
$443British Airways
Find Deal
Mon, Jan 12 - Mon, Jan 19
British Airways Logo
3:54 pm - 5:45 amSTL-MAD
30h 51m1 stop
British Airways Logo
7:25 pm - 6:16 pmMAD-STL
29h 51m2 stops
$448British Airways
Find Deal
Thu, Jan 15 - Thu, Jan 22
British Airways Logo
12:11 pm - 11:55 amSTL-MAD
16h 44m2 stops
British Airways Logo
12:40 pm - 6:34 pmMAD-STL
12h 54m1 stop
$452British Airways
Find Deal
Thu, Jan 15 - Thu, Jan 22
Iberia Logo
2:54 pm - 10:20 amSTL-MAD
12h 26m1 stop
Iberia Logo
1:15 pm - 10:44 pmMAD-STL
16h 29m1 stop
$453Iberia
Find Deal
Mon, Jan 12 - Mon, Jan 19
Multiple Airlines Logo
2:54 pm - 10:20 amSTL-MAD
12h 26m1 stop
Multiple Airlines Logo
4:25 pm - 9:08 amMAD-STL
23h 43m1 stop
$455Multiple Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for St. Louis to Madrid flights

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

How much is a round-trip flight from St. Louis to Madrid?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Madrid departing in January.

What’s the cheapest day of the week to fly from St. Louis to Madrid?

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

If you are looking for a flight deal from St. Louis to Madrid, look for departures on Tuesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Madrid, Thursday is the cheapest day to fly and Saturday is the most expensive.

What is the cheapest month to fly from St. Louis to Madrid?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis 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 St. Louis to Madrid is November, where tickets cost $617 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,227 and $1,162 respectively.

How far in advance should I book a flight from St. Louis 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 St. Louis 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 St. Louis to Madrid, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$417
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from St. Louis to Madrid

When to book flights from St. Louis to Madrid

Are your dates flexible? Find out the best times to travel from St. Louis 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 St. Louis to Madrid

  • What is the cheapest flight from St. Louis to Madrid?

    In the last 3 days, the lowest price for a flight from St. Louis to Madrid was $463 for a one-way ticket and $417 for a round-trip.

  • Do I need a passport to fly between St. Louis and Madrid?

    A passport is required to fly from St. Louis to Madrid.

  • Which airports will I be using when flying from St. Louis to Madrid?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Madrid, also known as Madrid Barajas.

  • Which aircraft models fly most regularly from St. Louis to Madrid?

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

  • Which airline alliances offer flights from St. Louis to Madrid?

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

  • Which is the best airline for flights from St. Louis to Madrid, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Madrid are Delta and United Airlines. With an average price for the route of $788 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $941 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis 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 St. Louis to Madrid.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Madrid from St. Louis 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 St. Louis 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 St. Louis with another airline. Booking your flights between St. Louis 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 St. Louis 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 St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from St. Louis to Madrid

 
See real verified KAYAK customer reviews for airlines flying from St. Louis 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 St. Louis 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.
7.4
United AirlinesOverall score based on 9055 reviews
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

6.0 GoodAnonymous, Nov 2025IAH - MEX
Read more United Airlines reviews

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Even though we were delayed, we were able to make our connection

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

I like that the crew kept us informed but we moved back and forth from gate to gate before the aircraft arrived.

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

I had a positive experience on American. I'm blind and traveling with a guide dog and the flight attendants were so kind, friendly, and helpful towards us. They checked in on us during the flight and they made us feel comfortable and welcomed. There was an hour delay before depature, but overall the flight was a smooth ride. I appreciate that there were no issues on this long flight back home.

We were told the flight was delayed 5 times, then it was moved to the next day.

More choices on snacks. Built-in video screen to enjoy entertainment choices.

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

Boarding was so so after zone 3 was called all other zones went in

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

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

Transportation from gate to airplane was poor we stayed in hot bus for 20 minute no vantilation

The crew were friendly and helpful. Iberia lost our luggage on arrival, Friday and we didn't get it until Sunday at 10:00 p.m. local Malaga time. I also paid $382.80 for seat assignments but two out out of the four were not together. Iberia mentioned that it was because the plane was delayed in Madrid before our flight began in LAX. They should compensate us half of my payment.

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

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"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

No WiFi in either flight. No leg room, the seat in front of me left dents on my knees and the tray was so low my knees propped it up if I tried to use it.

Everything you need to know for your flight from St. Louis to Madrid

Information on your arrival and departure airports