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Cheap flights from St. Louis to Barcelona from $307

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 Barcelona departing on 11/12. 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 Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
9:35 pm - 8:30 pm
STL
-
BCN
15h 55m
1 stop
British Airways Logo
10:15 am - 7:30 pm
BCN
-
STL
16h 15m
1 stop
$789British Airways
Wed, Aug 19 - Tue, Oct 20
Air Canada Logo
12:10 pm - 8:00 am
STL
-
BCN
12h 50m
1 stop
Air Canada Logo
6:40 am - 6:41 pm
BCN
-
STL
19h 01m
2 stops
$799Air Canada
Wed, Aug 19 - Tue, Oct 20
Air Canada Logo
8:55 am - 8:00 am
STL
-
BCN
16h 05m
2 stops
Air Canada Logo
9:05 am - 8:00 pm
BCN
-
STL
17h 55m
2 stops
$814Air Canada
Wed, Aug 19 - Tue, Oct 20
Lufthansa Logo
6:00 am - 1:15 pm
STL
-
BCN
24h 15m
1 stop
Lufthansa Logo
1:15 pm - 2:02 pm
BCN
-
STL
31h 47m
1 stop
$874Lufthansa
Wed, Jul 29 - Fri, Aug 14
Air Canada Logo
5:33 pm - 9:20 am
STL
-
BCN
32h 47m
2 stops
Air Canada Logo
12:15 pm - 3:38 pm
BCN
-
STL
34h 23m
2 stops
$877Air Canada
Sat, Aug 8 - Tue, Aug 18
Lufthansa Logo
8:43 am - 8:20 am
STL
-
BCN
16h 37m
1 stop
Lufthansa Logo
8:00 am - 11:44 pm
BCN
-
STL
22h 44m
2 stops
$880Lufthansa
Wed, Jul 29 - Wed, Aug 5
British Airways Logo
5:11 pm - 10:10 am
STL
-
BCN
33h 59m
1 stop
British Airways Logo
10:45 am - 8:26 pm
BCN
-
STL
16h 41m
1 stop
$885British Airways
Sat, Aug 8 - Tue, Aug 18
Lufthansa Logo
12:55 pm - 8:20 am
STL
-
BCN
12h 25m
1 stop
Lufthansa Logo
7:00 pm - 1:25 pm
BCN
-
STL
25h 25m
1 stop
$887Lufthansa
Mon, Aug 10 - Mon, Aug 24
United Airlines Logo
12:10 pm - 8:00 am
STL
-
BCN
12h 50m
1 stop
United Airlines Logo
4:10 pm - 3:31 pm
BCN
-
STL
30h 21m
2 stops
$888United Airlines
Wed, Jul 29 - Fri, Aug 14
Iberia Logo
9:41 am - 10:10 am
STL
-
BCN
17h 29m
1 stop
Iberia Logo
6:30 pm - 9:13 am
BCN
-
STL
21h 43m
1 stop
$889Iberia
Wed, Jul 29 - Wed, Aug 5

Lufthansa flights from St. Louis to Barcelona

Our best Lufthansa deals on St. Louis to Barcelona flight tickets
Lufthansa
Jul 29
STL6:00 amLambert-St Louis
24h 15m
1 stop
BCN1:15 pmBarcelona-El Prat
Aug 14
BCN1:15 pmBarcelona-El Prat
31h 47m
1 stop
STL2:02 pmLambert-St Louis
$874
Lufthansa
Jul 29
STL8:43 amLambert-St Louis
16h 37m
1 stop
BCN8:20 amBarcelona-El Prat
Aug 5
BCN8:00 amBarcelona-El Prat
22h 44m
2 stops
STL11:44 pmLambert-St Louis
$880
Lufthansa
Jul 29
STL12:10 pmLambert-St Louis
12h 50m
1 stop
BCN8:00 amBarcelona-El Prat
Aug 14
BCN3:15 pmBarcelona-El Prat
13h 02m
1 stop
STL9:17 pmLambert-St Louis
$887

Air Canada flights from St. Louis to Barcelona

Our best Air Canada deals on St. Louis to Barcelona flight tickets
Air Canada
Aug 19
STL12:10 pmLambert-St Louis
12h 50m
1 stop
BCN8:00 amBarcelona-El Prat
Oct 20
BCN6:40 amBarcelona-El Prat
19h 01m
2 stops
STL6:41 pmLambert-St Louis
$799
Air Canada
Aug 19
STL8:55 amLambert-St Louis
16h 05m
2 stops
BCN8:00 amBarcelona-El Prat
Oct 20
BCN9:05 amBarcelona-El Prat
17h 55m
2 stops
STL8:00 pmLambert-St Louis
$814
Air Canada
Aug 8
STL5:33 pmLambert-St Louis
32h 47m
2 stops
BCN9:20 amBarcelona-El Prat
Aug 18
BCN12:15 pmBarcelona-El Prat
34h 23m
2 stops
STL3:38 pmLambert-St Louis
$877

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Barcelona 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 May 30, 2026.
Use the filters below to find and compare flights from St. Louis to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 8/19

9:35 pm-8:30 pm

1 stop15h 55m

Barcelona-El Prat

Tue 10/20

10:15 am-7:30 pm

1 stop16h 15m

$789
Quickest round-trip

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 8/19

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Tue 10/20

6:40 am-6:41 pm

2 stops19h 01m

$799

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 8/19

8:55 am-8:00 am

2 stops16h 05m

Barcelona-El Prat

Tue 10/20

9:05 am-8:00 pm

2 stops17h 55m

$814

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 7/29

6:00 am-1:15 pm

1 stop24h 15m

Barcelona-El Prat

Fri 8/14

1:15 pm-2:02 pm

1 stop31h 47m

$874

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 8/8

5:33 pm-9:20 am

2 stops32h 47m

Barcelona-El Prat

Tue 8/18

12:15 pm-3:38 pm

2 stops34h 23m

$877

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 7/29

8:43 am-8:20 am

1 stop16h 37m

Barcelona-El Prat

Wed 8/5

8:00 am-11:44 pm

2 stops22h 44m

$880

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 8/8

5:11 pm-10:10 am

1 stop33h 59m

Barcelona-El Prat

Tue 8/18

10:45 am-8:26 pm

1 stop16h 41m

$885

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 8/10

12:55 pm-8:20 am

1 stop12h 25m

Barcelona-El Prat

Mon 8/24

7:00 pm-1:25 pm

1 stop25h 25m

$887

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 7/29

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Fri 8/14

4:10 pm-3:31 pm

2 stops30h 21m

$888

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 7/29

9:41 am-10:10 am

1 stop17h 29m

Barcelona-El Prat

Wed 8/5

6:30 pm-9:13 am

1 stop21h 43m

$889

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 Barcelona from

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

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 typical price of a round-trip flight between St. Louis and Barcelona?

What is the cheapest month to fly to Barcelona?

The month of December is, on average, the cheapest month to fly to Barcelona from St. Louis, with most prices found around $414. If you don’t want to visit Barcelona in December, then you should wait until March to fly from St. Louis, when ticket prices are also cheap, with an average price of $431.

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

You are more likely to see cheaper flights to Barcelona from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona for around $834 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona from St. Louis for as low as $581 on momondo.

Cheap St. Louis to Barcelona flight deals and tips

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

Fastest flight time

12h 16m

Direct flights

None
The fastest flight from St. Louis to Barcelona takes 12h 16m
There are no direct flights from St. Louis to Barcelona. There are no popular flight routes from St. Louis to Barcelona.
Search flight deals

Frequently asked questions about flying from St. Louis to Barcelona

  • How far is Lambert-St Louis to Barcelona by plane?

    The straight-line distance from Lambert-St Louis to Barcelona is 4636.1 mi. In terms of flight time, this usually takes a little over 12h 16m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Barcelona.

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

    The necessary travel and health documents for your Barcelona trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Barcelona

Compare and see reviews for airlines that fly from St. Louis to Barcelona with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $510Free CancellationRating
6.8
8,035 reviews
Search Lufthansa flights
British AirwaysPriceFrom $540Free CancellationRating
6.7
8,010 reviews
Search British Airways flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,418 reviews
Search Delta flights
Air CanadaPriceFrom $560Free CancellationRating
7.1
11,102 reviews
Search Air Canada flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,766 reviews
Search United Airlines flights
American AirlinesPriceFrom $607Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
IberiaPriceFrom $631Free CancellationRating
7.0
3,222 reviews
Search Iberia flights

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for St. Louis to Barcelona flights to just show those with flexible booking policies.

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

Once all potential St. Louis to Barcelona flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from St. Louis to Barcelona now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Barcelona and let you know when they change.

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Find better results for your trip to Spain

Fly into one of these airports located in Barcelona

Airports listed have a maximum distance of 46.7 mi from Barcelona
Barcelona-El Prat Airport
Girona Costa Brava Airport