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Cheap flights from St. Louis to Spain from $338

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 3/9. 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
1:15 pm - 12:00 pm
STL
-
BCN
15h 45m2 stops
Lufthansa Logo
11:00 am - 11:59 pm
BCN
-
STL
19h 59m1 stop
$436Lufthansa
Mon, Jan 19 - Mon, Jan 26
Lufthansa Logo
3:50 pm - 4:00 pm
STL
-
MAD
17h 10m1 stop
Lufthansa Logo
5:55 am - 1:55 pm
MAD
-
STL
15h 00m1 stop
$451Lufthansa
Wed, Jan 21 - Sun, Jan 25
Air Canada Logo
4:05 pm - 8:35 am
STL
-
BCN
33h 30m2 stops
Air Canada Logo
12:35 pm - 3:29 pm
BCN
-
STL
32h 54m2 stops
$457Air Canada
Sat, Mar 7 - Sun, Mar 15
Air Canada Logo
4:05 pm - 9:05 am
STL
-
BCN
34h 00m2 stops
Air Canada Logo
5:50 am - 3:29 pm
BCN
-
STL
40h 39m2 stops
$467Air Canada
Mon, Jan 19 - Sun, Feb 1
United Airlines Logo
6:30 am - 9:15 am
STL
-
MAD
19h 45m2 stops
United Airlines Logo
1:35 pm - 2:30 pm
MAD
-
STL
31h 55m2 stops
$473United Airlines
Mon, Jan 19 - Mon, Jan 26
United Airlines Logo
7:41 am - 4:40 pm
STL
-
MAD
25h 59m2 stops
United Airlines Logo
12:40 pm - 9:07 pm
MAD
-
STL
38h 27m2 stops
$478United Airlines
Thu, Mar 5 - Tue, Mar 17
American Airlines Logo
2:54 pm - 2:15 pm
STL
-
TFS
17h 21m2 stops
American Airlines Logo
6:45 am - 10:59 pm
TFS
-
STL
22h 14m2 stops
$741American Airlines
Wed, Feb 4 - Wed, Feb 11
Iberia Logo
9:25 am - 9:00 pm
STL
-
IBZ
28h 35m2 stops
Iberia Logo
10:55 pm - 10:44 pm
IBZ
-
STL
30h 49m2 stops
$847Iberia
Wed, Jan 21 - Sun, Jan 25
American Airlines Logo
9:15 am - 12:15 pm
STL
-
LPA
21h 00m2 stops
American Airlines Logo
6:30 am - 7:03 pm
LPA
-
STL
18h 33m2 stops
$888American Airlines
Sat, May 9 - Sat, May 16
Iberia Logo
11:05 am - 12:45 pm
STL
-
SVQ
18h 40m2 stops
Iberia Logo
9:10 am - 10:44 pm
SVQ
-
STL
20h 34m2 stops
$963Iberia
Fri, Jan 30 - Tue, Feb 3

United Airlines flights from St. Louis to Spain

Our best United Airlines deals on St. Louis to Spain flight tickets
United Airlines
Mar 3
STL7:41 amLambert-St Louis
17h 19m
2 stops
MAD8:00 amMadrid Barajas
Mar 17
MAD12:40 pmMadrid Barajas
38h 27m
2 stops
STL9:07 pmLambert-St Louis
$472
Find similar
United Airlines
Jan 19
STL6:30 amLambert-St Louis
19h 45m
2 stops
MAD9:15 amMadrid Barajas
Jan 26
MAD1:35 pmMadrid Barajas
31h 55m
2 stops
STL2:30 pmLambert-St Louis
$473
Find similar
United Airlines
Mar 5
STL7:41 amLambert-St Louis
25h 59m
2 stops
MAD4:40 pmMadrid Barajas
Mar 17
MAD12:40 pmMadrid Barajas
38h 27m
2 stops
STL9:07 pmLambert-St Louis
$478
Find similar

KLM flights from St. Louis to Spain

Our best KLM deals on St. Louis to Spain flight tickets
KLM
Jan 19
STL6:57 pmLambert-St Louis
30h 43m
1 stop
BCN8:40 amBarcelona-El Prat
Feb 1
BCN10:55 amBarcelona-El Prat
13h 55m
1 stop
STL5:50 pmLambert-St Louis
$475
Find similar
KLM
Mar 3
STL11:55 amLambert-St Louis
14h 20m
1 stop
MAD9:15 amMadrid Barajas
Mar 17
MAD10:05 amMadrid Barajas
13h 48m
1 stop
STL5:53 pmLambert-St Louis
$489
Find similar
KLM
Mar 3
STL11:55 amLambert-St Louis
14h 20m
1 stop
MAD9:15 amMadrid Barajas
Mar 18
MAD10:05 amMadrid Barajas
13h 48m
1 stop
STL5:53 pmLambert-St Louis
$564
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 December 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. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 1/19

1:15 pm-12:00 pm

2 stops15h 45m

Barcelona-El Prat

Mon 1/26

11:00 am-11:59 pm

1 stop19h 59m

$436

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 1/21

3:50 pm-4:00 pm

1 stop17h 10m

Madrid Barajas

Sun 1/25

5:55 am-1:55 pm

1 stop15h 00m

$451

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 3/7

4:05 pm-8:35 am

2 stops33h 30m

Barcelona-El Prat

Sun 3/15

12:35 pm-3:29 pm

2 stops32h 54m

$457

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 1/19

4:05 pm-9:05 am

2 stops34h 00m

Barcelona-El Prat

Sun 2/1

5:50 am-3:29 pm

2 stops40h 39m

$467

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 1/19

6:30 am-9:15 am

2 stops19h 45m

Madrid Barajas

Mon 1/26

1:35 pm-2:30 pm

2 stops31h 55m

$473

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 3/5

7:41 am-4:40 pm

2 stops25h 59m

Madrid Barajas

Tue 3/17

12:40 pm-9:07 pm

2 stops38h 27m

$478

St. LouisGranadilla

STL - TFS

STLTFS

Lambert-St Louis

Wed 2/4

2:54 pm-2:15 pm

2 stops17h 21m

Granadilla Tenerife-Sur

Wed 2/11

6:45 am-10:59 pm

2 stops22h 14m

$741

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Wed 1/21

9:25 am-9:00 pm

2 stops28h 35m

Ibiza

Sun 1/25

10:55 pm-10:44 pm

2 stops30h 49m

$847

St. LouisLas Palmas de Gran Canaria

STL - LPA

STLLPA

Lambert-St Louis

Sat 5/9

9:15 am-12:15 pm

2 stops21h 00m

Las Palmas de Gran Canaria

Sat 5/16

6:30 am-7:03 pm

2 stops18h 33m

$888

St. LouisSeville

STL - SVQ

STLSVQ

Lambert-St Louis

Fri 1/30

11:05 am-12:45 pm

2 stops18h 40m

Sevilla

Tue 2/3

9:10 am-10:44 pm

2 stops20h 34m

$963

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.

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 $895 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 25% 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

11h 07m

Direct flights

None
The fastest flight from St. Louis to Spain takes 11h 07m
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
7,607 reviews
Search British Airways flights
LufthansaPriceFrom $524Free CancellationRating
6.8
7,649 reviews
Search Lufthansa flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,015 reviews
Search Delta flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,107 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,056 reviews
Search Iberia flights
American AirlinesPriceFrom $587Free CancellationRating
7.2
11,051 reviews
Search American Airlines flights
KLMPriceFrom $590Free CancellationRating
7.7
1,434 reviews
Search KLM flights
Air CanadaPriceFrom $624Free CancellationRating
7.1
10,551 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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Find better results for your trip to Spain

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