Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

STL - MAD

Find cheap flights from St. Louis to Madrid from $439

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Madrid departing on 9/19. 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
0 bags
Thu 5/23
Thu 5/30

Search 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.
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
10:00 am - 8:45 amSTL-MAD
15h 45m1 stop
11:00 am - 11:35 pmMAD-STL
19h 35m1 stop
$665KLM
Find Deal
Wed, Sep 25 - Wed, Oct 16
10:10 am - 9:20 amSTL-MAD
16h 10m2 stops
12:45 pm - 3:20 pmMAD-STL
33h 35m2 stops
$671Air Canada
Find Deal
Wed, Oct 2 - Wed, Oct 9
11:08 am - 6:10 amSTL-MAD
12h 02m1 stop
11:40 am - 11:00 pmMAD-STL
18h 20m1 stop
$672American Airlines
Find Deal
Wed, Oct 9 - Tue, Oct 15
5:37 am - 6:10 amSTL-MAD
17h 33m1 stop
11:40 am - 9:07 pmMAD-STL
16h 27m2 stops
$675American Airlines
Find Deal
Wed, Oct 9 - Tue, Oct 15
6:26 pm - 4:30 pmSTL-MAD
15h 04m2 stops
11:45 am - 8:11 pmMAD-STL
15h 26m1 stop
$722British Airways
Find Deal
Thu, Oct 10 - Thu, Oct 17
6:21 pm - 4:30 pmSTL-MAD
15h 09m2 stops
7:55 pm - 8:11 pmMAD-STL
31h 16m2 stops
$750British Airways
Find Deal
Tue, Oct 1 - Mon, Oct 7
2:43 pm - 5:30 pmSTL-MAD
19h 47m2 stops
12:20 pm - 7:28 pmMAD-STL
14h 08m1 stop
$999Iberia
Find Deal
Sun, May 19 - Sun, May 26
5:31 pm - 5:35 pmSTL-MAD
41h 04m2 stops
11:50 am - 3:41 pmMAD-STL
34h 51m2 stops
$1,356Lufthansa
Find Deal
Sat, May 25 - Sat, Jun 1
5:31 pm - 5:35 pmSTL-MAD
41h 04m2 stops
5:05 pm - 1:30 pmMAD-STL
27h 25m1 stop
$1,374Lufthansa
Find Deal
Sat, May 25 - Sat, Jun 1
10:30 am - 5:40 amSTL-MAD
12h 10m1 stop
12:00 pm - 10:30 amMAD-STL
29h 30m1 stop
$1,563Iberia
Find Deal
Mon, May 13 - Sun, Aug 4

Flights from St. Louis to Madrid - Travel Insights & Trends

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.

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

The average price of all flights from St. Louis to Madrid clicked on KAYAK for each day over the last 12 months.
For St. Louis to Madrid, Wednesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Madrid back to St. Louis, the best deals are generally found on Monday, with Wednesday being 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 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 February, where tickets cost $621 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,559 and $1,495 respectively.

How far in advance should I book a flight from St. Louis to Madrid?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
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 33 days before departure.

Which airlines provide the cheapest flights from St. Louis to Madrid?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Madrid from St. Louis were found on KLM ($569) and Delta ($582), and the lowest round-trip tickets were found on KLM ($665) and Air Canada ($671).

Good to know

Low season

February

High season

March

Cheapest flight

$439
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly and prices are also 31% 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 $439 for a one-way ticket and $665 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 Star Alliance being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Madrid are Delta and KLM. With an average price for the route of $928 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $686 and an overall rating of 7.8.

  • 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.

See more FAQs

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.
8.0
DeltaOverall score based on 11028 reviews
8.6crew
8.2boarding
8.0entertainment
7.5food
7.9comfort
Airline reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

2.0 MediocreMarisol, Apr 2024DFW - ATL
Read more about Delta reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

The crew, food, and entertainment were all good. But my screen had some sort of bug where if I turned it off, it would turn back on after 2-5 minutes. At full brightness. It made it very hard to get any shut-eye on the overnight flight. Also, the older Boeing plane, while nicely cared for (and no doors fell off 😅👏) doesn't have the nice air quality of newer planes. So I felt a bit greasy by the time we landed in Sweden.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Ac was broken so we deplaned, waited 2 hours, taxiing for takeoff they said the plane would not fly so we went back to the gate and got a new plane which took another hour. In all a 4 hour delay for an 80 min flight.

Missed the flight because of them and up geting a rental car

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

Comfort of seats, ease of boarding. Food selection could be better

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

Flight was delayed by well over an hour. Communication was terrible.

I like the team but I don't like the food you provided with money. I want free food and free water.

An average flight experience. For our transatlantic portion, they provided a main meal and two snacks. However, the food was not very tasty and the drinks far too small and infrequent for such a long flight. The regrettable part of the flight was that the toilets were extremely filthy. I feel this is unacceptable.

Both flights were delayed. I lost my connection on the way back. No voucher or anything was givenx I had business ticket and no support to make it on time. I got to the door running 5 min after they close. Food really bad. Breakfast in business was worst that I what I remember in economy. Even though I have accumulated many miles, I don’t think Inwill keep buying Iberia. I am a frequent business traveler.

The food is really eco only level. Breakfast was shameful. I am considering to stop flying with Iberia. Business prices are as expensive as other companies with much better service.

Late boarding. Delayed departure leading to rushed connection at Madrid Barajas. Not necessarily Iberia's fault but delay loading cargo didn't help.

Took too long to tak off but besides that it was good

They made my flight a disaster they had me pay for bags that I already paid for through Iberia airlines and the hostesses were super mean and racist they just turned my vacation to a total nightmare and disappointment in fact they even had me rethink even no to go to morroco ever again even if my whole stay at the country was so nice and fun and perfect but anything at the airport and with the airline was a disaster do not recommend will never take a flight with them

All went smoothly, no problems; friendly crew. I would have appreciated a head pillow ;)

Staff not so nice, very dirty bathrooms, things in the hallways, food was not very nice.

I think I have bruises on my kneecaps. Do the seats have to be so close together these days? And if they are so close they really shouldn’t recline. I think when the gentleman in front of me reclined, the back of his head was on my chin. That being said the crew were always caring and polite, and the flight was on time and very safe. So I’m grateful for that.

I always try to book flights that don’t charge for baggage. Yet I was charged $75 for this flight.

Trouble keeps changing the time and I was booked different flight without knowing it was bad experience

I dropped my wallet under my seat on this flight with all of my money and credit card. I requested to be able to go back and retrieve it but Lufthansa denied my request. I went to the Customer Services and they called Lost and Found but I was told nothing found would be turned in until around 12:00pm. My next flight was leaving so I was unable to check to see if my wallet was turned in. I will never fly with Lufthansa again.

My concern is with Flight: 441 IAH-FRA I was very cramped in my seat and the person in front of me was reclined. I pulled my wallet out of my purse and when finished I did my best to cram it back into my purse. Our flight was very delayed and we were rebooked twice and lots of airport time. As I got off the flight I noticed that I had dropped my wallet( containing all my credit & debit bank cards + 240 US dollars & 240 Euros. I spoke to customer service & Lost &Found. I was denied access to look on the plane. Therefore I have been without money and given no help. Paula Bjork 503.545.6698

Dinner was good by air travel standards but breakfast was too light and heavy on carbs/sugar.

Used to love Lufthansa, but Rowe are too close together in Economy and passengers are allowed to recline their seats so far back it is impossible for those behind them to even reach for carry-on essentials during flight - except for meal service when flight attendants ask for seat backs to be raised, we can’t sleep on planes so this flight was most uncomfortable ever! Rod Rose

So far so good. I missed my flight because of the Lufthansa diversion. United helped me to figure out how to get accommodations from Lufthansa for my long layover. They help me book appropriate onward flight.

This flight space was way better than our international flight. Efficient boarding and comfortable

Horrible crowding on the seats, headphones provided did not fit or work in the entertainment center, seriously the most uncomfortable flight I have taken in a LONG time. The people in front of me were literally 5 inches from my face the entire flight. Did they change their seats recently? I remember it being tight but wow this was a whole new level. Also I am a 5'3" small woman so I can't even imagine a larger person dealing with that for 11 hrs.

Crew were very friendly and helpful. They explained to us in detail the delay in our takeoff due to the storm that rolled in from Belfast and did their best to make up the time. Always great to fly BA!

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Terrible. Flight was 3 hours delayed and I missed my other flight to my final destination

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Not sure if the crew were experiencing something unknown to me,but the service of passing water was non-existent.In addition,please take consideration when providing yogurt as alternative for breakfast as some of us, could be lactose intolerant.. thanks

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Horrible seat allocation. Boarding was slow. Food was average and so was entertainment. The TV terminal didn't work and so had to use remote.

Book cheap flights from St. Louis to Madrid

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Madrid found on KAYAK in the last 72 hours.
9/19Thu
2 stops
42h 07mSTL-MAD
$439
9/19Thu
2 stops
42h 07mSTL-MAD
$442
8/19Mon
2 stops
40h 35mSTL-MAD
$476
8/18Sun
2 stopsKLM
14h 45mSTL-MAD
$569
8/17Sat
1 stopDelta
32h 40mSTL-MAD
$582
8/16Fri
1 stopKLM
15h 45mSTL-MAD
$605
9/19Thu
3 stops
33h 05mSTL-MAD
$611
8/17Sat
2 stopsAir Canada
40h 15mSTL-MAD
$614
8/28Wed
1 stopLufthansa
16h 40mSTL-MAD
$1,033
8/28Wed
3 stopsUnited Airlines
40h 25mSTL-MAD
$1,279

Search by stops

Search by airline

Search by price

Last minute flights from St. Louis to Madrid

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Madrid that are departing in the next 10 days.
4/26Fri
multi-stopAmerican Airlines
17h 50mSTL-MAD
5/10Fri
multi-stopAmerican Airlines
20h 19mMAD-STL
$722
4/26Fri
multi-stopAmerican Airlines
15h 55mSTL-MAD
5/10Fri
multi-stopAmerican Airlines
17h 57mMAD-STL
$725
4/26Fri
multi-stopAmerican Airlines
17h 50mSTL-MAD
4/28Sun
multi-stopAmerican Airlines
14h 09mMAD-STL
$772
4/26Fri
multi-stopAmerican Airlines
15h 06mSTL-MAD
4/28Sun
multi-stopAmerican Airlines
14h 09mMAD-STL
$777
4/26Fri
multi-stopKLM
14h 44mSTL-MAD
4/28Sun
multi-stopKLM
17h 45mMAD-STL
$786
4/26Fri
multi-stop
29h 25mSTL-MAD
4/28Sun
multi-stop
35h 55mMAD-STL
$1,563
4/26Fri
multi-stop
24h 15mSTL-MAD
4/27Sat
multi-stop
24h 34mMAD-STL
$3,558

Search by stops

Search by airline

Search by price

St. Louis - Madrid Flights

Departure:

St. Louis (STL)United States

Destination:

Madrid (MAD)Spain

Return flight deals:

Madrid - St. Louis

Cabin classes:

Browse destinations: