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Cheap flights from St. Louis to Spain from $355

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 5/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Virgin Atlantic Logo
6:47 pm - 9:15 am
STL
-
MAD
31h 28m1 stop
Virgin Atlantic Logo
11:15 am - 8:41 pm
MAD
-
STL
16h 26m1 stop
$404Virgin Atlantic
Fri, Feb 20 - Thu, Mar 5
Lufthansa Logo
11:22 am - 12:00 pm
STL
-
BCN
17h 38m2 stops
Lufthansa Logo
6:50 am - 1:55 pm
BCN
-
STL
14h 05m1 stop
$435Lufthansa
Wed, Jan 14 - Sun, Jan 25
Air Canada Logo
4:05 pm - 9:35 am
STL
-
BCN
34h 30m2 stops
Air Canada Logo
1:35 pm - 9:00 pm
BCN
-
STL
38h 25m2 stops
$470Air Canada
Sun, Feb 1 - Tue, Feb 17
Air Canada Logo
11:20 am - 8:00 am
STL
-
MAD
37h 40m2 stops
Air Canada Logo
1:35 pm - 12:29 pm
MAD
-
STL
29h 54m2 stops
$472Air Canada
Sun, Jan 18 - Tue, Jan 27
United Airlines Logo
8:05 am - 9:15 am
STL
-
MAD
18h 10m2 stops
United Airlines Logo
11:15 am - 9:13 pm
MAD
-
STL
16h 58m2 stops
$480United Airlines
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
12:11 pm - 11:55 am
STL
-
BCN
16h 44m1 stop
American Airlines Logo
10:40 am - 7:29 pm
BCN
-
STL
15h 49m1 stop
$484American Airlines
Thu, Jan 15 - Sun, Feb 1
United Airlines Logo
8:45 am - 11:20 pm
STL
-
BIO
31h 35m2 stops
United Airlines Logo
11:35 am - 10:58 pm
BIO
-
STL
18h 23m2 stops
$488United Airlines
Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
12:01 pm - 9:00 am
STL
-
BCN
13h 59m2 stops
American Airlines Logo
11:00 am - 10:05 pm
BCN
-
STL
18h 05m1 stop
$488American Airlines
Sun, Feb 1 - Tue, Feb 17
Iberia Logo
12:06 pm - 12:05 am
STL
-
VLC
28h 59m2 stops
Iberia Logo
9:40 am - 9:03 am
VLC
-
STL
30h 23m2 stops
$514Iberia
Sat, Jan 10 - Sat, Jan 17
Iberia Logo
2:54 pm - 9:10 pm
STL
-
LEI
23h 16m2 stops
Iberia Logo
2:20 pm - 9:03 am
LEI
-
STL
25h 43m2 stops
$584Iberia
Fri, Jan 23 - Fri, Jan 30

KLM flights from St. Louis to Spain

Our best KLM deals on St. Louis to Spain flight tickets
KLM
Feb 20
STL6:47 pmLambert-St Louis
31h 28m
1 stop
MAD9:15 amMadrid Barajas
Mar 5
MAD11:00 amMadrid Barajas
16h 43m
2 stops
STL8:43 pmLambert-St Louis
$443
Find similar
KLM
Dec 21
STL7:02 pmLambert-St Louis
14h 28m
2 stops
BCN4:30 pmBarcelona-El Prat
Dec 29
BCN10:15 amBarcelona-El Prat
13h 44m
1 stop
STL4:59 pmLambert-St Louis
$1,746
Find similar
KLM
Dec 21
STL4:55 pmLambert-St Louis
32h 05m
1 stop
BCN8:00 amBarcelona-El Prat
Dec 29
BCN10:15 amBarcelona-El Prat
13h 44m
1 stop
STL4:59 pmLambert-St Louis
$1,992
Find similar

Delta flights from St. Louis to Spain

Our best Delta deals on St. Louis to Spain flight tickets
Delta
Feb 20
STL7:10 amLambert-St Louis
17h 50m
2 stops
MAD8:00 amMadrid Barajas
Mar 5
MAD10:00 amMadrid Barajas
17h 41m
2 stops
STL8:41 pmLambert-St Louis
$482
Find similar
Delta
Jan 26
STL3:45 pmLambert-St Louis
10h 30m
1 stop
MAD9:15 amMadrid Barajas
Feb 2
MAD10:00 amMadrid Barajas
17h 43m
2 stops
STL8:43 pmLambert-St Louis
$493
Find similar
Delta
Mar 17
STL1:00 pmLambert-St Louis
13h 05m
1 stop
MAD8:05 amMadrid Barajas
Mar 24
MAD1:05 pmMadrid Barajas
25h 47m
2 stops
STL8:52 amLambert-St Louis
$541
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 11, 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

Fri 2/20

6:47 pm-9:15 am

1 stop31h 28m

Madrid Barajas

Thu 3/5

11:15 am-8:41 pm

1 stop16h 26m

$404

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 1/14

11:22 am-12:00 pm

2 stops17h 38m

Barcelona-El Prat

Sun 1/25

6:50 am-1:55 pm

1 stop14h 05m

$435

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 2/1

4:05 pm-9:35 am

2 stops34h 30m

Barcelona-El Prat

Tue 2/17

1:35 pm-9:00 pm

2 stops38h 25m

$470

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 1/18

11:20 am-8:00 am

2 stops37h 40m

Madrid Barajas

Tue 1/27

1:35 pm-12:29 pm

2 stops29h 54m

$472

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/24

8:05 am-9:15 am

2 stops18h 10m

Madrid Barajas

Sat 1/31

11:15 am-9:13 pm

2 stops16h 58m

$480

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 1/15

12:11 pm-11:55 am

1 stop16h 44m

Barcelona-El Prat

Sun 2/1

10:40 am-7:29 pm

1 stop15h 49m

$484

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Fri 1/23

8:45 am-11:20 pm

2 stops31h 35m

Bilbao

Tue 1/27

11:35 am-10:58 pm

2 stops18h 23m

$488

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 2/1

12:01 pm-9:00 am

2 stops13h 59m

Barcelona-El Prat

Tue 2/17

11:00 am-10:05 pm

1 stop18h 05m

$488

St. LouisValencia

STL - VLC

STLVLC

Lambert-St Louis

Sat 1/10

12:06 pm-12:05 am

2 stops28h 59m

Valencia

Sat 1/17

9:40 am-9:03 am

2 stops30h 23m

$514

St. LouisAlmería

STL - LEI

STLLEI

Lambert-St Louis

Fri 1/23

2:54 pm-9:10 pm

2 stops23h 16m

Almeria

Fri 1/30

2:20 pm-9:03 am

2 stops25h 43m

$584

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 27m

Direct flights

None
The fastest flight from St. Louis to Spain takes 11h 27m
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
7,626 reviews
Search Lufthansa flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,573 reviews
Search British Airways flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,009 reviews
Search Delta flights
United AirlinesPriceFrom $574Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,045 reviews
Search Iberia flights
KLMPriceFrom $590Free CancellationRating
7.7
1,432 reviews
Search KLM flights
American AirlinesPriceFrom $613Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
Air CanadaPriceFrom $624Free CancellationRating
7.1
10,514 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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