What is the cheapest airline that flies from Lambert-St Louis to Barcelona?

Air Canada and British Airways are the most popular carriers operating from Lambert-St Louis to Barcelona

What airlines fly to Barcelona?

United Airlines, Air Canada and British Airways are the top three most popular airlines that fly to Barcelona from St. Louis according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Barcelona. Keep in mind that there are 8 different airlines that fly to Barcelona on a routine basis, so you have a few additional options to choose from.

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?

As of November 2026, there are 8 operators available to choose from 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.

$371 Cheap Flights from St. Louis to Barcelona in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Barcelona

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:55 pm - 9:10 amSTL Lambert-St Louis-BCN Barcelona-El Prat

13h 15m1 stop Philadelphia

12:00 pm - 8:31 pmBCN Barcelona-El Prat-STL Lambert-St Louis

15h 31m1 stop Philadelphia

$747British Airways

Wed, Feb 10 - Wed, Feb 17

12:55 pm - 9:10 amSTL Lambert-St Louis-BCN Barcelona-El Prat

13h 15m1 stop Philadelphia

8:50 am - 7:47 pmBCN Barcelona-El Prat-STL Lambert-St Louis

17h 57m2 stops Madrid Barajas Chicago O'Hare Intl

$757Iberia

Wed, Feb 10 - Wed, Feb 17

11:00 am - 11:25 amSTL Lambert-St Louis-BCN Barcelona-El Prat

17h 25m2 stops Newark Brussels Bruxelles-National

1:35 pm - 5:34 pmBCN Barcelona-El Prat-STL Lambert-St Louis

34h 59m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$757United Airlines

Wed, Feb 10 - Wed, Feb 17

9:01 am - 9:10 amSTL Lambert-St Louis-BCN Barcelona-El Prat

18h 09m1 stop Dallas/Fort Worth

12:00 pm - 8:31 pmBCN Barcelona-El Prat-STL Lambert-St Louis

14h 31m1 stop Philadelphia

$764Iberia

Tue, Mar 16 - Wed, Mar 24

1:27 pm - 1:15 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

16h 48m1 stop Chicago O'Hare Intl

12:15 pm - 12:40 pmBCN Barcelona-El Prat-STL Lambert-St Louis

31h 25m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$768United Airlines

Mon, Apr 12 - Fri, Apr 23

8:33 am - 8:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

18h 02m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

9:55 am - 3:26 pmBCN Barcelona-El Prat-STL Lambert-St Louis

35h 31m2 stops Zurich Toronto Pearson Intl

$768Multiple Airlines

Sun, Mar 14 - Fri, Mar 19

8:33 am - 8:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

18h 02m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

12:35 pm - 5:09 pmBCN Barcelona-El Prat-STL Lambert-St Louis

34h 34m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$771Air Canada

Tue, Mar 16 - Wed, Mar 24

6:40 am - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

18h 20m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

12:15 pm - 5:03 pmBCN Barcelona-El Prat-STL Lambert-St Louis

35h 48m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$771Air Canada

Mon, Apr 12 - Fri, Apr 23

4:05 pm - 7:05 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

21h 00m2 stops Toronto Pearson Intl Zurich

12:15 pm - 3:26 pmBCN Barcelona-El Prat-STL Lambert-St Louis

33h 11m1 stop Toronto Pearson Intl

$772Multiple Airlines

Sun, Mar 14 - Fri, Mar 19

10:23 am - 9:10 amSTL Lambert-St Louis-BCN Barcelona-El Prat

16h 47m1 stop Dallas/Fort Worth

10:40 am - 7:36 pmBCN Barcelona-El Prat-STL Lambert-St Louis

14h 56m1 stop Dallas/Fort Worth

$816British Airways

Mon, Mar 15 - Fri, Mar 19

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Air Canada flights from St. Louis to Barcelona

Our best Air Canada deals on St. Louis to Barcelona flight tickets

Air Canada

Mar 1

STL9:20 amLambert-St Louis

17h 15m

2 stops

BCN9:35 amBarcelona-El Prat

Mar 5

BCN1:35 pmBarcelona-El Prat

29h 40m

2 stops

STL12:15 pmLambert-St Louis

$771

Air Canada

Dec 11

STL5:25 amLambert-St Louis

21h 10m

2 stops

BCN9:35 amBarcelona-El Prat

Dec 25

BCN1:35 pmBarcelona-El Prat

38h 47m

2 stops

STL9:22 pmLambert-St Louis

$798

Air Canada

Dec 12

STL4:05 pmLambert-St Louis

34h 00m

2 stops

BCN9:05 amBarcelona-El Prat

Dec 24

BCN1:35 pmBarcelona-El Prat

34h 33m

2 stops

STL5:08 pmLambert-St Louis

$804

United Airlines flights from St. Louis to Barcelona

Our best United Airlines deals on St. Louis to Barcelona flight tickets

United Airlines

Dec 13

STL6:10 amLambert-St Louis

19h 10m

1 stop

BCN8:20 amBarcelona-El Prat

Dec 25

BCN1:35 pmBarcelona-El Prat

34h 33m

2 stops

STL5:08 pmLambert-St Louis

$745

United Airlines

Dec 13

STL10:50 amLambert-St Louis

15h 10m

2 stops

BCN9:00 amBarcelona-El Prat

Dec 25

BCN1:35 pmBarcelona-El Prat

34h 33m

2 stops

STL5:08 pmLambert-St Louis

$749

United Airlines

Dec 12

STL5:05 pmLambert-St Louis

32h 15m

1 stop

BCN8:20 amBarcelona-El Prat

Dec 25

BCN1:35 pmBarcelona-El Prat

34h 33m

2 stops

STL5:08 pmLambert-St Louis

$750

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 2/10

12:55 pm-9:10 am

1 stop13h 15m

Barcelona-El Prat

Wed 2/17

12:00 pm-8:31 pm

1 stop15h 31m

$747

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 2/10

12:55 pm-9:10 am

1 stop13h 15m

Barcelona-El Prat

Wed 2/17

8:50 am-7:47 pm

2 stops17h 57m

$757

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 2/10

11:00 am-11:25 am

2 stops17h 25m

Barcelona-El Prat

Wed 2/17

1:35 pm-5:34 pm

2 stops34h 59m

$757

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Tue 3/16

9:01 am-9:10 am

1 stop18h 09m

Barcelona-El Prat

Wed 3/24

12:00 pm-8:31 pm

1 stop14h 31m

$764

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 4/12

1:27 pm-1:15 pm

1 stop16h 48m

Barcelona-El Prat

Fri 4/23

12:15 pm-12:40 pm

2 stops31h 25m

$768

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Sun 3/14

8:33 am-8:35 am

2 stops18h 02m

Barcelona-El Prat

Fri 3/19

9:55 am-3:26 pm

2 stops35h 31m

$768

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Tue 3/16

8:33 am-8:35 am

2 stops18h 02m

Barcelona-El Prat

Wed 3/24

12:35 pm-5:09 pm

2 stops34h 34m

$771

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 4/12

6:40 am-8:00 am

2 stops18h 20m

Barcelona-El Prat

Fri 4/23

12:15 pm-5:03 pm

2 stops35h 48m

$771

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Sun 3/14

4:05 pm-7:05 pm

2 stops21h 00m

Barcelona-El Prat

Fri 3/19

12:15 pm-3:26 pm

1 stop33h 11m

$772

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 3/15

10:23 am-9:10 am

1 stop16h 47m

Barcelona-El Prat

Fri 3/19

10:40 am-7:36 pm

1 stop14h 56m

$816

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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

Prices are currently typical for flights on this route.

Typical prices usually range from $613 to $857.
The lowest price recently found on this route was $747.

What is the cheapest month to fly to Barcelona?

The month of April is, on average, the cheapest month to fly to Barcelona from St. Louis, with most prices found around $634. If you don’t want to visit Barcelona in April, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $764.

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 $990 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 $835 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

Best Price Found	$371
Fastest flight time	11h 35m
Direct flights	None

The best one-way flight to Barcelona from St. Louis in the past 72 hours is $371. The best round-trip flight deal from St. Louis to Barcelona found on momondo in the last 72 hours is $747.

The fastest flight from St. Louis to Barcelona takes 11h 35m

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 11h 35m.
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?
As of November 2026, there are 8 operators available to choose from 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
British Airways	PriceFrom $540	Free Cancellation	Rating 6.7 8,285 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom $560	Free Cancellation	Rating 7.5 698 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.0 12,226 reviews	Search American Airlines flights
United Airlines	PriceFrom $580	Free Cancellation	Rating 7.3 10,472 reviews	Search United Airlines flights
Delta	PriceFrom $585	Free Cancellation	Rating 7.8 8,699 reviews	Search Delta flights
Lufthansa	PriceFrom $613	Free Cancellation	Rating 6.8 8,292 reviews	Search Lufthansa flights
Air Canada	PriceFrom $648	Free Cancellation	Rating 7.1 11,876 reviews	Search Air Canada flights
Iberia	PriceFrom $703	Free Cancellation	Rating 7.0 3,231 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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Fly into one of these airports located in Barcelona

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Cheap flights from St. Louis to Barcelona from $371

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 2/6. 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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Air Canada flights from St. Louis to Barcelona

Our best Air Canada deals on St. Louis to Barcelona flight tickets

United Airlines flights from St. Louis to Barcelona

Our best United Airlines deals on St. Louis to Barcelona flight tickets

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

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

What is the cheapest month to fly to Barcelona?

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

What is the cheapest airline that flies from Lambert-St Louis to Barcelona?

What airlines fly to Barcelona?

Cheap St. Louis to Barcelona flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Barcelona

Best airlines flying from St. Louis to Barcelona

Compare and see reviews for airlines that fly from St. Louis to Barcelona with momondo

Why use momondo?

An easier way to manage your Barcelona trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favorite airline to Barcelona

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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According to popular flight searches on momondo this year

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