$350 Find Cheap Flights from St. Louis to Spain

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 Spain departing on 7/10. 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.
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Best Spain Flight Deals from St. Louis

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Madrid
Madrid1 stop$456
Málaga
Málaga2 stops$995
Seville
Seville2 stops$797
Valencia
Valencia2 stops$1,170
Ibiza
Ibiza2 stops$1,547
Bilbao
Bilbao2 stops$608
Oviedo
Oviedo2 stops$1,486
Madrid
Madrid1 stop$456
Málaga
Málaga2 stops$995
Seville
Seville2 stops$797
Valencia
Valencia2 stops$1,170
Ibiza
Ibiza2 stops$1,547
Bilbao
Bilbao2 stops$608
Oviedo
Oviedo2 stops$1,486

Cheap Flights from St. Louis to Spain

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

Recent round-trip flight deals from St. Louis to Spain

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from St. Louis to Spain.
Discover the best prices for you by selecting your travel dates on KAYAK.
Lufthansa Logo
3:30 pm - 7:50 pmSTL-MAD
21h 20m1 stop
Lufthansa Logo
10:50 am - 7:39 pmMAD-STL
15h 49m1 stop
$456Lufthansa
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Sun, Oct 12 - Wed, Oct 22
Delta Logo
9:00 am - 7:00 amSTL-BCN
16h 00m1 stop
Delta Logo
10:15 am - 8:50 pmBCN-STL
17h 35m1 stop
$542Delta
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Mon, Oct 27 - Wed, Nov 12
United Airlines Logo
10:30 am - 1:05 pmSTL-BCN
20h 35m1 stop
United Airlines Logo
3:05 pm - 9:04 pmBCN-STL
12h 59m1 stop
$582United Airlines
Find Deal
Sun, Oct 26 - Thu, Nov 13
United Airlines Logo
3:15 pm - 1:05 pmSTL-BCN
15h 50m1 stop
United Airlines Logo
3:05 pm - 12:20 pmBCN-STL
28h 15m1 stop
$587United Airlines
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Sun, Oct 26 - Tue, Nov 11
Air Canada Logo
6:35 am - 8:20 amSTL-MAD
18h 45m2 stops
Air Canada Logo
12:45 pm - 2:19 pmMAD-STL
32h 34m2 stops
$610Air Canada
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Wed, Oct 15 - Wed, Oct 22
Air Canada Logo
4:05 pm - 8:20 amSTL-MAD
33h 15m1 stop
Air Canada Logo
12:30 pm - 10:34 amMAD-STL
29h 04m2 stops
$612Air Canada
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Sat, Oct 11 - Fri, Oct 24
Iberia Logo
4:17 pm - 2:20 pmSTL-MAD
15h 03m1 stop
Iberia Logo
10:35 am - 8:23 pmMAD-STL
16h 48m2 stops
$616Iberia
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Sun, Oct 5 - Sat, Oct 18
Iberia Logo
9:50 am - 10:10 amSTL-BCN
17h 20m1 stop
Iberia Logo
12:20 pm - 10:27 pmBCN-STL
17h 07m1 stop
$642Iberia
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Mon, Sep 1 - Sat, Sep 13
American Airlines Logo
6:25 am - 9:05 amSTL-BCN
19h 40m1 stop
American Airlines Logo
10:45 am - 8:23 pmBCN-STL
16h 38m1 stop
$722American Airlines
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Thu, Sep 25 - Mon, Oct 6
American Airlines Logo
9:45 am - 5:40 amSTL-MAD
12h 55m1 stop
American Airlines Logo
1:00 pm - 11:23 pmMAD-STL
17h 23m1 stop
$831American Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 9
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KAYAK's insights & trends for St. Louis to Spain flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Spain, 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 Spain is February, when tickets cost $684 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,285 and $1,242 respectively.

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

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 Spain, 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 Spain, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$350
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 22% increase in price.
Flight from St. Louis to Madrid

FAQs - booking Spain flights

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

    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 Spain.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Spain 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 Spain?

    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 from St. Louis to Spain with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Spain?

    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 from St. Louis to Spain up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Spain?

    The cheapest time of day to fly to Spain is generally in the morning, when round-trip flights cost $905 on average. Morning departures are around 13% cheaper than evening flights, on average. The most expensive time of day to fly to Spain is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,043.

Top 5 airlines serving from St. Louis to Spain

Need help choosing which airline to fly with from St. Louis to Spain? 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 8696 reviews
6.6Food
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

10.0 ExcellentAnonymous, Apr 2025SFO - HKG
Read more United Airlines reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

All was good except for the seats, not very comfy.

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

This flight didn't happen for me because of overbooking.

My flight was overbooked and they would not let me board. I had to book another flight and pay the full amount of that flight. I did not get any help at all from Air Canada or United Airlines.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Poor air traffic controller staffing led to a 50%reduction on flights so we got to wait 4 hrs for our flight! Very disorganized at the gate Poor communication with customers

It was delayed by almost 90 minutes and that messed up our plans but it was beyond UA’s control that is what we heard

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

Flight from Costa Rica to Madrid was excellent. Good food and service. The flight from Madrid to Brussels was very poor . No food , no entertainment, no usb … Total package was quite expensive so you should give same service on the second flight

We travelled with Level, which is a subsidiary of Iberia. They mixed up all our seats, downgraded few from premium economy fo economy. The crew were not professional, they seem to be in a rush! Also some with an attitude

business class food was pretty average otherwise it was a good experience

Everything OK , except the plane left more than an hour late so I couldn’t participate in an excursion I had that morning in Brcelona

Flight from Madrid to Dakar had no onboard entertainment for a business class. Not even a single screen . That was disappointing. The WiFi only worked for the first 45 mins of the flight.

I paid to upgrade to Business Class. The queue to check in at the Business Class aisle was full of people without Business Class tickets, the fast-track immigration line was “closed” but the representative opened it up for his friends, regardless (there was a lot of fist-bumping), and the lounge was an absolute mess…..4 staff sitting playing with their phones while every table had dirty plates and glasses waiting to be cleared…..and the least said about the rude lady on the reception desk at the lounge , the better!

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

A 13 hour flight with no food apart from what they offered from a menu you had to pay for. On top of that, there were no blankets, so during the flight when the cabin temperature dropped, everyone was very cold. Neither of these things were highlighted at the time of booking. This is the worst long-haul flight I’ve ever encountered.

Horrible. Paid for seats for my family. Iberia changed planes and never notified us that the seats we paid extra for did not even exist on the plane. We were randomly placed on the plane. Thankfully, we were seated together. Upon boarding, my youngest daughter was pulled from the line and they just arbitrarily changed her seat 7 rows back from the rest of the family. I had to wait at the gate while they tried to see us back together. One of the most uncomfortable small spaces on a plane I’ve ever experienced. When I called Iberia, they first told me that no mistake was made that the plane was never changed. Yet my receipt for my paid seats were for rows that did not even exist on this type of plane we were getting on. They said that they would reimburse my money and I would get an email, but I’ve never received any information or emails regarding a refund for the seats that I had paid extra for. Then when we arrived in Madrid, one of the pieces of luggage that we had checked in was damaged to the point that the handle that was stowed in to the luggage was broken off by the crew members handling the luggage. The crew on the plane was very nice, but as far as the rest of the experience, I would be very hesitant to ever use Iberia again.

Bad business class. Staff totally not helping. Lights and chargers not working

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

The airplane was old. Some things didn’t work out of middle seat was broken. The rest was OK.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

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