What airlines fly to Barcelona?

United Airlines, Air Canada and American Airlines 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 41% 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.

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

Lufthansa, Air Canada, and Aer Lingus are the most popular carriers operating from Lambert-St Louis to Barcelona

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 2025, 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.

$330 Cheap Flights from St. Louis to Barcelona in 2025/26

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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.

6:35 am - 8:00 amSTL-BCN

18h 25m2 stops

10:15 am - 9:08 amBCN-STL

29h 53m2 stops

$449Delta

Find Deal

Wed, Feb 4 - Tue, Feb 17

1:35 pm - 9:35 amSTL-BCN

37h 00m2 stops

1:35 pm - 5:03 pmBCN-STL

34h 28m2 stops

$461United Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 11

5:12 pm - 8:40 amSTL-BCN

32h 28m1 stop

10:55 am - 9:02 pmBCN-STL

17h 07m1 stop

$464KLM

Find Deal

Thu, Dec 4 - Thu, Dec 11

12:31 pm - 9:35 amSTL-BCN

14h 04m2 stops

1:35 pm - 3:29 pmBCN-STL

32h 54m2 stops

$480Air Canada

Find Deal

Wed, Nov 26 - Thu, Dec 4

2:54 pm - 11:55 amSTL-BCN

14h 01m1 stop

10:40 am - 10:59 pmBCN-STL

19h 19m1 stop

$484American Airlines

Find Deal

Thu, Jan 15 - Sun, Feb 1

11:51 am - 11:10 amSTL-BCN

16h 19m2 stops

12:30 pm - 8:21 pmBCN-STL

14h 51m1 stop

$509British Airways

Find Deal

Wed, Nov 19 - Thu, Dec 4

2:54 pm - 10:25 amSTL-BCN

36h 31m2 stops

10:40 am - 10:59 pmBCN-STL

19h 19m1 stop

$514British Airways

Find Deal

Tue, Jan 6 - Tue, Jan 13

11:55 am - 8:50 amSTL-BCN

13h 55m1 stop

9:15 pm - 8:52 amBCN-STL

18h 37m2 stops

$567Iberia

Find Deal

Wed, Feb 4 - Mon, Feb 16

11:55 am - 8:50 amSTL-BCN

13h 55m1 stop

12:30 pm - 10:44 pmBCN-STL

17h 14m1 stop

$624Iberia

Find Deal

Sun, Jan 18 - Sun, Jan 25

4:05 pm - 9:35 amSTL-BCN

34h 30m2 stops

6:50 am - 5:43 pmBCN-STL

17h 53m3 stops

$699Air Canada

Find Deal

Sun, Jan 18 - Sun, Jan 25

Lufthansa flights from St. Louis to Barcelona

Our best Lufthansa deals on St. Louis to Barcelona flight tickets

Lufthansa

Nov 19

STL11:37 amLambert-St Louis

17h 23m

2 stops

BCN12:00 pmBarcelona-El Prat

Dec 4

BCN6:50 amBarcelona-El Prat

17h 13m

2 stops

STL5:03 pmLambert-St Louis

$498

Find similar

Lufthansa

Nov 19

STL3:50 pmLambert-St Louis

13h 10m

1 stop

BCN12:00 pmBarcelona-El Prat

Dec 4

BCN6:50 amBarcelona-El Prat

17h 13m

2 stops

STL5:03 pmLambert-St Louis

$588

Find similar

Lufthansa

Nov 18

STL1:10 pmLambert-St Louis

12h 10m

1 stop

BCN8:20 amBarcelona-El Prat

Nov 28

BCN6:50 amBarcelona-El Prat

14h 05m

1 stop

STL1:55 pmLambert-St Louis

$627

Find similar

British Airways flights from St. Louis to Barcelona

Our best British Airways deals on St. Louis to Barcelona flight tickets

British Airways

Nov 19

STL11:51 amLambert-St Louis

16h 19m

2 stops

BCN11:10 amBarcelona-El Prat

Dec 4

BCN12:30 pmBarcelona-El Prat

14h 51m

1 stop

STL8:21 pmLambert-St Louis

$509

Find similar

British Airways

Jan 6

STL2:54 pmLambert-St Louis

36h 31m

2 stops

BCN10:25 amBarcelona-El Prat

Jan 13

BCN10:40 amBarcelona-El Prat

19h 19m

1 stop

STL10:59 pmLambert-St Louis

$514

Find similar

British Airways

Jan 6

STL2:54 pmLambert-St Louis

15h 46m

2 stops

BCN1:40 pmBarcelona-El Prat

Jan 13

BCN10:40 amBarcelona-El Prat

19h 19m

1 stop

STL10:59 pmLambert-St Louis

$578

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 2/4

6:35 am-8:00 am

2 stops18h 25m

Barcelona-El Prat

Tue 2/17

10:15 am-9:08 am

2 stops29h 53m

$449

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 12/4

1:35 pm-9:35 am

2 stops37h 00m

Barcelona-El Prat

Thu 12/11

1:35 pm-5:03 pm

2 stops34h 28m

$461

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 12/4

5:12 pm-8:40 am

1 stop32h 28m

Barcelona-El Prat

Thu 12/11

10:55 am-9:02 pm

1 stop17h 07m

$464

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/26

12:31 pm-9:35 am

2 stops14h 04m

Barcelona-El Prat

Thu 12/4

1:35 pm-3:29 pm

2 stops32h 54m

$480

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 1/15

2:54 pm-11:55 am

1 stop14h 01m

Barcelona-El Prat

Sun 2/1

10:40 am-10:59 pm

1 stop19h 19m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/19

11:51 am-11:10 am

2 stops16h 19m

Barcelona-El Prat

Thu 12/4

12:30 pm-8:21 pm

1 stop14h 51m

$509

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 1/6

2:54 pm-10:25 am

2 stops36h 31m

Barcelona-El Prat

Tue 1/13

10:40 am-10:59 pm

1 stop19h 19m

$514

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 2/4

11:55 am-8:50 am

1 stop13h 55m

Barcelona-El Prat

Mon 2/16

9:15 pm-8:52 am

2 stops18h 37m

$567

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 1/18

11:55 am-8:50 am

1 stop13h 55m

Barcelona-El Prat

Sun 1/25

12:30 pm-10:44 pm

1 stop17h 14m

$624

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 1/18

4:05 pm-9:35 am

2 stops34h 30m

Barcelona-El Prat

Sun 1/25

6:50 am-5:43 pm

3 stops17h 53m

$699

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 cheapest month to fly to Barcelona?

The month of February is, on average, the cheapest month to fly to Barcelona from St. Louis, with most prices found around $660. If you don’t want to visit Barcelona in February, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $669.

What is the cheapest day to depart on your flight to Barcelona?

The cheapest day to depart from St. Louis to Barcelona is on a Tuesday when prices can be found for as low as $867. On the other hand, Thursday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,135.

What is the cheapest time of day to depart on your flight to Barcelona?

In the morning is the cheapest time of day to fly from St. Louis to Barcelona when you can find flight prices for as low as $905. Flying to Barcelona in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,043 on average. Flights to Barcelona from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $921 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 $736 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

Direct flights	None

There are no direct flights from St. Louis to Barcelona. There are no popular flight routes from St. Louis to Barcelona.

Search flight deals

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 27m.
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 2025, 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
Delta	PriceFrom $552	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Lufthansa	PriceFrom $568	Free Cancellation	Rating 6.8 7,558 reviews	Search Lufthansa flights
United Airlines	PriceFrom $578	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
British Airways	PriceFrom $590	Free Cancellation	Rating 6.7 7,500 reviews	Search British Airways flights
KLM	PriceFrom $590	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights
Air Canada	PriceFrom $624	Free Cancellation	Rating 7.1 10,416 reviews	Search Air Canada flights
Iberia	PriceFrom $631	Free Cancellation	Rating 7.0 3,007 reviews	Search Iberia flights
American Airlines	PriceFrom $648	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines 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.