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Cheap flights from St. Louis to Spain from $317

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Spain departing on 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Spain

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
9:30 am - 9:15 amSTL-MAD
16h 45m1 stop
Delta Logo
11:15 am - 6:33 pmMAD-STL
14h 18m1 stop
$429Delta
Find Deal
Tue, Dec 2 - Tue, Dec 16
Delta Logo
7:05 am - 8:40 amSTL-BCN
18h 35m1 stop
Delta Logo
10:15 am - 9:50 amBCN-STL
30h 35m2 stops
$438Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
United Airlines Logo
10:00 am - 9:35 amSTL-BCN
16h 35m2 stops
United Airlines Logo
1:35 pm - 2:23 pmBCN-STL
31h 48m2 stops
$461United Airlines
Find Deal
Wed, Nov 26 - Thu, Dec 4
Air Canada Logo
4:05 pm - 8:00 amSTL-MAD
32h 55m2 stops
Air Canada Logo
1:35 pm - 2:30 pmMAD-STL
31h 55m2 stops
$467Air Canada
Find Deal
Sat, Jan 17 - Thu, Jan 29
United Airlines Logo
1:10 pm - 11:45 amSTL-MAD
15h 35m2 stops
United Airlines Logo
1:35 pm - 2:23 pmMAD-STL
31h 48m2 stops
$474United Airlines
Find Deal
Wed, Nov 26 - Wed, Dec 10
Air Canada Logo
6:30 am - 9:35 amSTL-BCN
20h 05m2 stops
Air Canada Logo
6:50 am - 3:29 pmBCN-STL
39h 39m2 stops
$478Air Canada
Find Deal
Wed, Nov 26 - Fri, Dec 5
Iberia Logo
10:49 am - 9:00 amSTL-BCN
15h 11m1 stop
Iberia Logo
12:30 pm - 8:38 pmBCN-STL
15h 08m1 stop
$479Iberia
Find Deal
Tue, Dec 2 - Tue, Dec 9
Iberia Logo
11:51 am - 5:50 amSTL-MAD
10h 59m1 stop
Iberia Logo
1:15 pm - 11:15 pmMAD-STL
17h 00m1 stop
$483Iberia
Find Deal
Tue, Nov 18 - Tue, Nov 25
American Airlines Logo
2:54 pm - 11:35 amSTL-BCN
13h 41m2 stops
American Airlines Logo
12:30 pm - 10:44 pmBCN-STL
17h 14m1 stop
$506American Airlines
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Fri, Jan 16 - Thu, Jan 22
American Airlines Logo
9:33 am - 9:00 amSTL-BCN
16h 27m1 stop
American Airlines Logo
10:40 am - 7:29 pmBCN-STL
15h 49m1 stop
$533American Airlines
Find Deal
Thu, Jan 15 - Sun, Feb 1

Iberia flights from St. Louis to Spain

Our best Iberia deals on St. Louis to Spain flight tickets
Iberia
Dec 2
STL10:49 amLambert-St Louis
15h 11m
1 stop
BCN9:00 amBarcelona-El Prat
Dec 9
BCN12:30 pmBarcelona-El Prat
15h 08m
1 stop
STL8:38 pmLambert-St Louis
$479
Find similar
Iberia
Nov 18
STL11:51 amLambert-St Louis
10h 59m
1 stop
MAD5:50 amMadrid Barajas
Nov 25
MAD1:15 pmMadrid Barajas
17h 00m
1 stop
STL11:15 pmLambert-St Louis
$483
Find similar
Iberia
Nov 28
STL9:53 amLambert-St Louis
15h 37m
2 stops
SVQ8:30 amSevilla
Dec 6
SVQ9:10 amSevilla
16h 56m
2 stops
STL7:06 pmLambert-St Louis
$1,197
Find similar

Lufthansa flights from St. Louis to Spain

Our best Lufthansa deals on St. Louis to Spain flight tickets
Lufthansa
Nov 26
STL6:43 pmLambert-St Louis
16h 07m
2 stops
MAD5:50 pmMadrid Barajas
Dec 10
MAD5:55 amMadrid Barajas
15h 00m
1 stop
STL1:55 pmLambert-St Louis
$482
Find similar
Lufthansa
Nov 5
STL6:43 pmLambert-St Louis
21h 52m
2 stops
MAD11:35 pmMadrid Barajas
Dec 3
MAD8:30 amMadrid Barajas
22h 12m
2 stops
STL11:42 pmLambert-St Louis
$492
Find similar
Lufthansa
Nov 25
STL6:43 pmLambert-St Louis
15h 52m
2 stops
BCN5:35 pmBarcelona-El Prat
Dec 2
BCN5:10 pmBarcelona-El Prat
27h 45m
1 stop
STL1:55 pmLambert-St Louis
$502
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Spain that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 23, 2025.
Use the filters below to find and compare flights from St. Louis to Spain that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 12/2

9:30 am-9:15 am

1 stop16h 45m

Madrid Barajas

Tue 12/16

11:15 am-6:33 pm

1 stop14h 18m

$429

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 12/2

7:05 am-8:40 am

1 stop18h 35m

Barcelona-El Prat

Tue 12/9

10:15 am-9:50 am

2 stops30h 35m

$438

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/26

10:00 am-9:35 am

2 stops16h 35m

Barcelona-El Prat

Thu 12/4

1:35 pm-2:23 pm

2 stops31h 48m

$461

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/17

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Thu 1/29

1:35 pm-2:30 pm

2 stops31h 55m

$467

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 11/26

1:10 pm-11:45 am

2 stops15h 35m

Madrid Barajas

Wed 12/10

1:35 pm-2:23 pm

2 stops31h 48m

$474

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/26

6:30 am-9:35 am

2 stops20h 05m

Barcelona-El Prat

Fri 12/5

6:50 am-3:29 pm

2 stops39h 39m

$478

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 12/2

10:49 am-9:00 am

1 stop15h 11m

Barcelona-El Prat

Tue 12/9

12:30 pm-8:38 pm

1 stop15h 08m

$479

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 11/18

11:51 am-5:50 am

1 stop10h 59m

Madrid Barajas

Tue 11/25

1:15 pm-11:15 pm

1 stop17h 00m

$483

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 1/16

2:54 pm-11:35 am

2 stops13h 41m

Barcelona-El Prat

Thu 1/22

12:30 pm-10:44 pm

1 stop17h 14m

$506

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 1/15

9:33 am-9:00 am

1 stop16h 27m

Barcelona-El Prat

Sun 2/1

10:40 am-7:29 pm

1 stop15h 49m

$533

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Spain from

How to get the cheapest flight ticket from St. Louis to Spain

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Spain?

If you don’t want to visit Spain in November, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $660.

What is the cheapest day to depart on your flight to Spain?

The cheapest day to depart from St. Louis to Spain is on a Tuesday when prices can be found for as low as $867. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Spain for around $1,135.

What is the cheapest time of day to depart on your flight to Spain?

Flying to Spain from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $905 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Spain is in the afternoon when prices are around $1,043.

How far in advance should I book a flight to Spain?

You are more likely to see cheaper flights to Spain from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Spain for around $917 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Spain from St. Louis for as low as $736 on momondo.

Can stopping save me money on St. Louis to Spain flights?

You could potentially save up to 10% on your flight if you consider stops on a St. Louis to Spain flight.

Cheap St. Louis to Spain flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Spain

Direct flights

None
There are no direct flights from St. Louis to Spain. There are no popular flight routes from St. Louis to Spain.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Spain?

    Prices for flights from Lambert-St Louis Airport to Spain were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Spain?

  • How old do you have to be to fly from Lambert-St Louis Airport to Spain?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Spain.

  • What documentation or ID do you need to fly to Spain?

    The travel and health documents required for your trip to Spain can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Spain. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Spain

Compare and see reviews for airlines that fly from St. Louis to Spain with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $524Free CancellationRating
6.8
7,514 reviews
Search Lufthansa flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,467 reviews
Search British Airways flights
DeltaPriceFrom $552Free CancellationRating
7.9
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
2,997 reviews
Search Iberia flights
KLMPriceFrom $590Free CancellationRating
7.7
1,404 reviews
Search KLM flights
Air CanadaPriceFrom $624Free CancellationRating
7.1
10,346 reviews
Search Air Canada flights
American AirlinesPriceFrom $634Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Spain?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Spain. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Spain with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Spain from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Spain?

Once you have performed a search for St. Louis to Spain flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Spain right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Spain from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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