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Cheap flights from St. Louis to Barcelona from $262

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 9/3. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
12:52 pm - 12:50 pm
STL
-
BCN
16h 58m
1 stop
Virgin Atlantic Logo
11:00 am - 7:58 pm
BCN
-
STL
15h 58m
1 stop
$469Virgin Atlantic
Mon, Sep 7 - Mon, Sep 14
Virgin Atlantic Logo
10:33 am - 8:35 am
STL
-
BCN
15h 02m
2 stops
Virgin Atlantic Logo
11:00 am - 11:42 pm
BCN
-
STL
19h 42m
1 stop
$471Virgin Atlantic
Mon, Sep 7 - Mon, Sep 14
Virgin Atlantic Logo
10:51 am - 8:35 am
STL
-
BCN
14h 44m
2 stops
Virgin Atlantic Logo
11:30 am - 5:53 pm
BCN
-
STL
13h 23m
1 stop
$472Virgin Atlantic
Thu, Jul 30 - Fri, Aug 7
Virgin Atlantic Logo
10:51 am - 8:35 am
STL
-
BCN
14h 44m
2 stops
Virgin Atlantic Logo
11:00 am - 11:58 pm
BCN
-
STL
19h 58m
1 stop
$507Virgin Atlantic
Thu, Jul 30 - Mon, Aug 10
Virgin Atlantic Logo
10:51 am - 12:50 pm
STL
-
BCN
18h 59m
1 stop
Virgin Atlantic Logo
11:30 am - 5:53 pm
BCN
-
STL
13h 23m
1 stop
$591Virgin Atlantic
Thu, Jul 30 - Fri, Aug 7
Virgin Atlantic Logo
10:51 am - 12:50 pm
STL
-
BCN
18h 59m
1 stop
Virgin Atlantic Logo
11:00 am - 5:53 pm
BCN
-
STL
13h 53m
1 stop
$626Virgin Atlantic
Thu, Jul 30 - Mon, Aug 10
Virgin Atlantic Logo
10:33 am - 8:35 am
STL
-
BCN
15h 02m
2 stops
Virgin Atlantic Logo
10:55 am - 7:58 pm
BCN
-
STL
16h 03m
2 stops
$732Virgin Atlantic
Mon, Sep 7 - Mon, Sep 14
Finnair Logo
4:32 pm - 10:35 am
STL
-
BCN
11h 03m
1 stop
Finnair Logo
11:30 am - 11:25 pm
BCN
-
STL
17h 55m
1 stop
$737Finnair
Sun, Oct 11 - Tue, Oct 27
Multiple Airlines Logo
12:10 pm - 8:00 am
STL
-
BCN
12h 50m
1 stop
Multiple Airlines Logo
12:15 pm - 6:41 pm
BCN
-
STL
13h 26m
1 stop
$741Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Multiple Airlines Logo
12:10 pm - 8:00 am
STL
-
BCN
12h 50m
1 stop
Multiple Airlines Logo
12:15 pm - 8:20 pm
BCN
-
STL
15h 05m
2 stops
$745Multiple Airlines
Wed, Sep 23 - Wed, Sep 30

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Lufthansa flights from St. Louis to Barcelona

Our best Lufthansa deals on St. Louis to Barcelona flight tickets
Lufthansa
Oct 7
STL1:29 pmLambert-St Louis
16h 11m
2 stops
BCN12:40 pmBarcelona-El Prat
Oct 18
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
$783
Lufthansa
Oct 7
STL1:29 pmLambert-St Louis
16h 11m
2 stops
BCN12:40 pmBarcelona-El Prat
Oct 18
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
$784
Lufthansa
Oct 25
STL7:04 pmLambert-St Louis
22h 01m
2 stops
BCN11:05 pmBarcelona-El Prat
Nov 5
BCN6:20 pmBarcelona-El Prat
26h 25m
1 stop
STL1:45 pmLambert-St Louis
$798

United Airlines flights from St. Louis to Barcelona

Our best United Airlines deals on St. Louis to Barcelona flight tickets
United Airlines
Dec 1
STL6:30 amLambert-St Louis
18h 50m
1 stop
BCN8:20 amBarcelona-El Prat
Dec 11
BCN1:35 pmBarcelona-El Prat
34h 05m
2 stops
STL4:40 pmLambert-St Louis
$753
United Airlines
Sep 22
STL7:00 amLambert-St Louis
18h 00m
2 stops
BCN8:00 amBarcelona-El Prat
Oct 2
BCN12:15 pmBarcelona-El Prat
40h 22m
2 stops
STL9:37 pmLambert-St Louis
$756
United Airlines
Oct 11
STL3:11 pmLambert-St Louis
15h 04m
1 stop
BCN1:15 pmBarcelona-El Prat
Oct 27
BCN10:30 amBarcelona-El Prat
16h 43m
2 stops
STL9:13 pmLambert-St Louis
$764

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 June 26, 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

Mon 9/7

12:52 pm-12:50 pm

1 stop16h 58m

Barcelona-El Prat

Mon 9/14

11:00 am-7:58 pm

1 stop15h 58m

$469

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 9/7

10:33 am-8:35 am

2 stops15h 02m

Barcelona-El Prat

Mon 9/14

11:00 am-11:42 pm

1 stop19h 42m

$471

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 7/30

10:51 am-8:35 am

2 stops14h 44m

Barcelona-El Prat

Fri 8/7

11:30 am-5:53 pm

1 stop13h 23m

$472

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 7/30

10:51 am-8:35 am

2 stops14h 44m

Barcelona-El Prat

Mon 8/10

11:00 am-11:58 pm

1 stop19h 58m

$507

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 7/30

10:51 am-12:50 pm

1 stop18h 59m

Barcelona-El Prat

Fri 8/7

11:30 am-5:53 pm

1 stop13h 23m

$591

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 7/30

10:51 am-12:50 pm

1 stop18h 59m

Barcelona-El Prat

Mon 8/10

11:00 am-5:53 pm

1 stop13h 53m

$626

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 9/7

10:33 am-8:35 am

2 stops15h 02m

Barcelona-El Prat

Mon 9/14

10:55 am-7:58 pm

2 stops16h 03m

$732

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 10/11

4:32 pm-10:35 am

1 stop11h 03m

Barcelona-El Prat

Tue 10/27

11:30 am-11:25 pm

1 stop17h 55m

$737
Quickest round-trip

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 9/23

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Wed 9/30

12:15 pm-6:41 pm

1 stop13h 26m

$741

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 9/23

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Wed 9/30

12:15 pm-8:20 pm

2 stops15h 05m

$745

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 $858 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 $557 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 50m

Direct flights

None
The fastest flight from St. Louis to Barcelona takes 12h 50m
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 50m.

  • 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
8,100 reviews
Search Lufthansa flights
British AirwaysPriceFrom $540Free CancellationRating
6.7
8,072 reviews
Search British Airways flights
DeltaPriceFrom $552Free CancellationRating
7.8
8,452 reviews
Search Delta flights
Air CanadaPriceFrom $560Free CancellationRating
7.1
11,267 reviews
Search Air Canada flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,895 reviews
Search United Airlines flights
American AirlinesPriceFrom $629Free CancellationRating
7.1
11,778 reviews
Search American Airlines flights
IberiaPriceFrom $637Free CancellationRating
7.0
3,250 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