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Cheap flights from St. Louis to Spain from $271

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 3/16. 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.
Lufthansa Logo
11:39 am - 9:15 am
STL
-
MAD
14h 36m1 stop
Lufthansa Logo
5:55 am - 1:55 pm
MAD
-
STL
15h 00m1 stop
$461Lufthansa
Tue, Feb 17 - Sun, Mar 1
Lufthansa Logo
11:39 am - 9:15 am
STL
-
MAD
14h 36m1 stop
Lufthansa Logo
5:55 am - 1:55 pm
MAD
-
STL
15h 00m1 stop
$463Lufthansa
Tue, Feb 17 - Sun, Mar 1
Air Canada Logo
7:41 am - 9:35 am
STL
-
BCN
18h 54m2 stops
Air Canada Logo
12:35 pm - 2:43 pm
BCN
-
STL
32h 08m2 stops
$468Air Canada
Fri, Mar 6 - Thu, Mar 12
Air Canada Logo
7:41 am - 9:35 am
STL
-
BCN
18h 54m2 stops
Air Canada Logo
12:35 pm - 2:43 pm
BCN
-
STL
32h 08m2 stops
$469Air Canada
Fri, Mar 6 - Thu, Mar 12
United Airlines Logo
6:55 pm - 8:00 am
STL
-
MAD
30h 05m2 stops
United Airlines Logo
12:40 pm - 9:07 pm
MAD
-
STL
38h 27m2 stops
$472United Airlines
Mon, Mar 2 - Wed, Mar 11
American Airlines Logo
6:00 am - 9:00 am
STL
-
BCN
20h 00m1 stop
American Airlines Logo
11:00 am - 11:56 pm
BCN
-
STL
19h 56m1 stop
$484American Airlines
Sun, Feb 1 - Tue, Feb 17
American Airlines Logo
11:55 am - 8:50 am
STL
-
BCN
13h 55m1 stop
American Airlines Logo
11:00 am - 11:56 pm
BCN
-
STL
19h 56m1 stop
$485American Airlines
Sun, Feb 1 - Tue, Feb 17
United Airlines Logo
11:39 am - 12:10 pm
STL
-
VLC
17h 31m2 stops
United Airlines Logo
6:00 am - 1:55 pm
VLC
-
STL
14h 55m1 stop
$489United Airlines
Wed, Feb 25 - Sun, Mar 1
Iberia Logo
11:46 am - 12:40 pm
STL
-
OVD
17h 54m2 stops
Iberia Logo
1:25 pm - 11:01 am
OVD
-
STL
28h 36m2 stops
$772Iberia
Thu, Feb 26 - Mon, Mar 2
Iberia Logo
2:00 pm - 12:40 pm
STL
-
OVD
15h 40m2 stops
Iberia Logo
5:40 pm - 11:01 am
OVD
-
STL
24h 21m2 stops
$773Iberia
Thu, Feb 26 - Mon, Mar 2

British Airways flights from St. Louis to Spain

Our best British Airways deals on St. Louis to Spain flight tickets
British Airways
Mar 3
STL11:59 amLambert-St Louis
16h 21m
2 stops
BCN11:20 amBarcelona-El Prat
Mar 10
BCN9:35 amBarcelona-El Prat
19h 47m
1 stop
STL11:22 pmLambert-St Louis
$473
Find similar
British Airways
Feb 18
STL4:05 pmLambert-St Louis
17h 50m
2 stops
MAD4:55 pmMadrid Barajas
Feb 25
MAD1:15 pmMadrid Barajas
16h 49m
1 stop
STL11:04 pmLambert-St Louis
$475
Find similar
British Airways
Apr 13
STL6:54 pmLambert-St Louis
15h 46m
2 stops
BCN5:40 pmBarcelona-El Prat
Apr 27
BCN9:10 pmBarcelona-El Prat
29h 20m
1 stop
STL7:30 pmLambert-St Louis
$479
Find similar

American Airlines flights from St. Louis to Spain

Our best American Airlines deals on St. Louis to Spain flight tickets
American Airlines
Feb 1
STL6:00 amLambert-St Louis
20h 00m
1 stop
BCN9:00 amBarcelona-El Prat
Feb 17
BCN11:00 amBarcelona-El Prat
19h 56m
1 stop
STL11:56 pmLambert-St Louis
$484
Find similar
American Airlines
Feb 1
STL11:55 amLambert-St Louis
13h 55m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 17
BCN11:00 amBarcelona-El Prat
19h 56m
1 stop
STL11:56 pmLambert-St Louis
$485
Find similar
American Airlines
Feb 1
STL10:17 amLambert-St Louis
15h 43m
2 stops
BCN9:00 amBarcelona-El Prat
Feb 17
BCN11:00 amBarcelona-El Prat
19h 56m
1 stop
STL11:56 pmLambert-St Louis
$490
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 January 2, 2026.
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 2/17

11:39 am-9:15 am

1 stop14h 36m

Madrid Barajas

Sun 3/1

5:55 am-1:55 pm

1 stop15h 00m

$461

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 2/17

11:39 am-9:15 am

1 stop14h 36m

Madrid Barajas

Sun 3/1

5:55 am-1:55 pm

1 stop15h 00m

$463

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 3/6

7:41 am-9:35 am

2 stops18h 54m

Barcelona-El Prat

Thu 3/12

12:35 pm-2:43 pm

2 stops32h 08m

$468

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 3/6

7:41 am-9:35 am

2 stops18h 54m

Barcelona-El Prat

Thu 3/12

12:35 pm-2:43 pm

2 stops32h 08m

$469

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/2

6:55 pm-8:00 am

2 stops30h 05m

Madrid Barajas

Wed 3/11

12:40 pm-9:07 pm

2 stops38h 27m

$472

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 2/1

6:00 am-9:00 am

1 stop20h 00m

Barcelona-El Prat

Tue 2/17

11:00 am-11:56 pm

1 stop19h 56m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 2/1

11:55 am-8:50 am

1 stop13h 55m

Barcelona-El Prat

Tue 2/17

11:00 am-11:56 pm

1 stop19h 56m

$485

St. LouisValencia

STL - VLC

STLVLC

Lambert-St Louis

Wed 2/25

11:39 am-12:10 pm

2 stops17h 31m

Valencia

Sun 3/1

6:00 am-1:55 pm

1 stop14h 55m

$489

St. LouisOviedo

STL - OVD

STLOVD

Lambert-St Louis

Thu 2/26

11:46 am-12:40 pm

2 stops17h 54m

Oviedo Asturias

Mon 3/2

1:25 pm-11:01 am

2 stops28h 36m

$772

St. LouisOviedo

STL - OVD

STLOVD

Lambert-St Louis

Thu 2/26

2:00 pm-12:40 pm

2 stops15h 40m

Oviedo Asturias

Mon 3/2

5:40 pm-11:01 am

2 stops24h 21m

$773

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 February, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $663.

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 $893 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 $724 on momondo.

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

You could potentially save up to 23% 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

Fastest flight time

10h 50m

Direct flights

None
The fastest flight from St. Louis to Spain takes 10h 50m
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
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,635 reviews
Search British Airways flights
LufthansaPriceFrom $524Free CancellationRating
6.8
7,674 reviews
Search Lufthansa flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,021 reviews
Search Delta flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,132 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,058 reviews
Search Iberia flights
American AirlinesPriceFrom $587Free CancellationRating
7.2
11,072 reviews
Search American Airlines flights
KLMPriceFrom $590Free CancellationRating
7.7
1,435 reviews
Search KLM flights
Air CanadaPriceFrom $624Free CancellationRating
7.1
10,573 reviews
Search Air Canada 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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