What are the cheapest airlines to fly from St. Louis to Barcelona-El Prat Airport one-way?

One-way options have recently been found by users for as low as $463 on Delta. Other airlines that offer cheap prices include United Airlines from $578 and American Airlines from $583 one-way.

What is the cheapest day to fly from St. Louis to Barcelona-El Prat Airport?

Travelers seeking maximum savings on their St. Louis to Barcelona-El Prat Airport flight should consider departing on Monday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Barcelona-El Prat Airport?

Before booking your flight from St. Louis to Barcelona-El Prat Airport check out the most popular airlines for this route: American Airlines, Air Canada or British Airways.

What is the cheapest day to fly round-trip from St. Louis to Barcelona-El Prat Airport?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 31% on your flight compared to booking on days when demand is much higher.

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

Users have found that booking a flight from St. Louis to Barcelona-El Prat Airport at least 30 days early can save you up to 8% on average compared to booking a flight this week. If booking 30 days before your flight isn’t an option for you, users have found flights from St. Louis to Barcelona-El Prat Airport for as little as $640 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $653 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Barcelona-El Prat Airport?

Our data shows that February tends to be the cheapest month to fly to Barcelona-El Prat Airport from St. Louis. Users have commonly found prices around $982 for the month, but tickets can be as low as $537. Due to multiple factors, prepare for potentially higher prices in June.

Most accurate provider : When it comes to deals on St. Louis-Barcelona-El Prat Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Barcelona-El Prat Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Barcelona-El Prat Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Barcelona-El Prat Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Barcelona-El Prat Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from St. Louis to Barcelona-El Prat?

Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Barcelona-El Prat. You should not have trouble finding flights to Barcelona-El Prat from Lambert-St Louis; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day. You should also have plenty of airline options to choose from since 8 airlines have flights from the St. Louis airport to Barcelona-El Prat. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

Can I find deals for flights from St. Louis to Barcelona-El Prat that include hotel bookings?

Yes. In addition to deals on St. Louis to Barcelona-El Prat flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Barcelona-El Prat?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Barcelona-El Prat.

Can I find deals for business class flights from St. Louis to Barcelona-El Prat?

Yes. Cheapflights offers flight deals from St. Louis to Barcelona-El Prat by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$463+ Flights from St. Louis to Barcelona-El Prat Airport

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Lambert-St Louis to Barcelona-El Prat are usually found in February or January, booked 29 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from St. Louis to Barcelona-El Prat

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$805 (FlightHub)
One-way from	$463 (Delta)
Popular in	June
Cheapest in	February
Average price	$933

Provider with most accurate pricing for Lambert-St Louis-Barcelona-El Prat flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Barcelona-El Prat flights.

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From Lambert-St Louis to Barcelona-El Prat

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One-way flight from Lambert-St Louis to Barcelona-El Prat

Search Deals

Highest demand for flights based on searches. 21% potential increase in price ($263 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from St. Louis to Barcelona-El Prat

Cheapest flights from St. Louis to Barcelona-El Prat
Explore the most affordable flight options available from St. Louis to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Wed 11/191:27 pmSTL - BCN

1 stop16h 38mMultiple Airlines

Wed 11/2612:15 pmBCN - STL

2 stops35h 59mMultiple Airlines

Deal found 4/10

$548

Wed 11/193:15 pmSTL - BCN

1 stop14h 50mUnited Airlines

Wed 11/263:05 pmBCN - STL

1 stop12h 59mUnited Airlines

Deal found 4/10

$571

Thu 9/257:59 pmSTL - BCN

2 stops17h 36mBritish Airways

Mon 10/68:25 pmBCN - STL

2 stops26h 43mBritish Airways

Deal found 4/11

$645

Sat 12/65:18 pmSTL - BCN

2 stops33h 32mAir Canada

Sun 12/145:50 amBCN - STL

2 stops16h 36mAir Canada

Deal found 4/10

$652

Thu 9/2511:38 amSTL - BCN

1 stop17h 37mAmerican Airlines

Mon 10/66:30 pmBCN - STL

1 stop20h 56mAmerican Airlines

Deal found 4/11

$709

Mon 8/257:20 amSTL - BCN

1 stop19h 00mDelta

Thu 9/49:30 amBCN - STL

1 stop13h 28mDelta

Deal found 4/10

$741

Sat 8/231:30 pmSTL - BCN

2 stops15h 25mKLM

Sat 9/69:30 amBCN - STL

1 stop18h 17mKLM

Deal found 4/10

$866

Mon 7/211:16 pmSTL - BCN

1 stop12h 49mIberia

Fri 8/810:45 amBCN - STL

1 stop16h 38mIberia

Deal found 4/10

$889

Best flights from St. Louis to Barcelona-El Prat
Discover carefully curated flight deals from St. Louis to Barcelona-El Prat that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 11, 2025.

Tue 5/61:30 pmSTL - BCN

1 stop11h 20mMultiple Airlines

Mon 5/128:40 pmBCN - STL

2 stops34h 06mMultiple Airlines

Deal found 4/10

$805

Sat 5/107:19 pmSTL - BCN

1 stop31h 51mBritish Airways

Sat 5/178:00 pmBCN - STL

2 stops26h 21mBritish Airways

Deal found 4/10

$827

Tue 5/66:30 amSTL - BCN

1 stop23h 45mUnited Airlines

Mon 5/121:15 pmBCN - STL

1 stop30h 21mUnited Airlines

Deal found 4/10

$836

Mon 5/56:30 amSTL - BCN

2 stops18h 20mAir Canada

Sun 5/1112:15 pmBCN - STL

1 stop14h 43mAir Canada

Deal found 4/10

$841

Thu 4/245:37 pmSTL - BCN

2 stops15h 48mKLM

Mon 5/59:00 amBCN - STL

2 stops15h 56mKLM

Deal found 4/10

$939

Mon 6/161:24 pmSTL - BCN

1 stop12h 41mIberia

Wed 7/2310:45 amBCN - STL

1 stop16h 38mIberia

Deal found 4/10

$1,067

Wed 6/186:00 amSTL - BCN

1 stop17h 00mDelta

Wed 7/2311:35 amBCN - STL

1 stop19h 04mDelta

Deal found 4/10

$1,111

Fri 5/309:36 amSTL - BCN

2 stops14h 09mAmerican Airlines

Sun 6/156:30 pmBCN - STL

1 stop22h 01mAmerican Airlines

Deal found 4/10

$1,256

Last-minute flights from St. Louis to Barcelona-El Prat
Discover last-minute flight deals from St. Louis to Barcelona-El Prat. Data last updated April 11, 2025 and is based on user searches.

Sat 4/129:52 amSTL - BCN

2 stops17h 28mAer Lingus

Mon 4/2111:05 pmBCN - STL

2 stops30h 07mAer Lingus

Deal found 4/10

$1,866

Sat 4/124:56 pmSTL - BCN

1 stop33h 04mLufthansa

Mon 4/216:50 amBCN - STL

2 stops15h 57mLufthansa

Deal found 4/10

$1,965

Sun 4/208:25 amSTL - BCN

1 stop16h 55mMultiple Airlines

Sun 4/276:50 amBCN - STL

1 stop13h 40mMultiple Airlines

Deal found 4/10

$862

Sun 4/208:25 amSTL - BCN

1 stop16h 55mUnited Airlines

Sun 4/276:00 amBCN - STL

2 stops16h 47mUnited Airlines

Deal found 4/10

$867

Thu 4/245:37 pmSTL - BCN

2 stops15h 48mKLM

Mon 5/59:00 amBCN - STL

2 stops15h 56mKLM

Deal found 4/10

$939

Mon 5/56:30 amSTL - BCN

2 stops18h 20mAir Canada

Sun 5/1112:15 pmBCN - STL

1 stop14h 43mAir Canada

Deal found 4/10

$841

Wed 5/71:30 pmSTL - BCN

1 stop11h 20mUnited Airlines

Wed 5/1412:15 pmBCN - STL

2 stops29h 53mUnited Airlines

Deal found 4/10

$764

Wed 5/712:15 pmSTL - BCN

3 stops19h 30mMultiple Airlines

Wed 5/143:45 pmBCN - STL

3 stops32h 00mMultiple Airlines

Deal found 4/10

$776

Sat 5/107:19 pmSTL - BCN

1 stop31h 51mBritish Airways

Sat 5/178:00 pmBCN - STL

2 stops26h 21mBritish Airways

Deal found 4/10

$827

Mon 5/264:15 pmSTL - BCN

1 stop11h 15mIberia

Wed 6/410:45 amBCN - STL

1 stop18h 07mIberia

Deal found 4/10

$1,067

Thu 5/292:15 pmSTL - BCN

2 stops18h 25mDelta

Sat 6/149:00 amBCN - STL

2 stops21h 51mDelta

Deal found 4/10

$1,274

Fri 5/309:36 amSTL - BCN

2 stops14h 09mAmerican Airlines

Sun 6/156:30 pmBCN - STL

1 stop22h 01mAmerican Airlines

Deal found 4/10

$1,256

One-way flights from St. Louis to Barcelona-El Prat
Search for one-way flight options from St. Louis to Barcelona-El Prat. Find affordable one-way fares based on user searches. Data last updated April 11, 2025.

Wed 10/89:00 amSTL - BCN

1 stop19h 55mDelta

Deal found 4/10

$463

Mon 7/211:30 pmSTL - BCN

1 stop11h 20mUnited Airlines

Deal found 4/10

$578

Mon 7/219:23 amSTL - BCN

2 stops14h 22mAmerican Airlines

Deal found 4/10

$583

Wed 4/233:30 pmSTL - BCN

1 stop13h 25mLufthansa

Deal found 4/10

$627

Thu 4/245:45 amSTL - BCN

1 stop21h 45mBritish Airways

Deal found 4/10

$668

Tue 6/247:20 amSTL - BCN

2 stops18h 45mIberia

Deal found 4/10

$740

Thu 6/261:30 pmSTL - BCN

1 stop11h 20mAir Canada

Deal found 4/10

$893

Wed 10/87:05 pmSTL - BCN

2 stops14h 20mKLM

Deal found 4/10

$1,198

Wed 10/87:00 amSTL - BCN

3 stops28h 10mMultiple Airlines

Deal found 4/10

$1,361

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 5/6

1:30 pm-7:50 am

1 stop11h 20m

Barcelona-El Prat

Mon 5/12

8:40 pm-11:46 pm

2 stops34h 06m

$805

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 5/10

7:19 pm-10:10 am

1 stop31h 51m

Barcelona-El Prat

Sat 5/17

8:00 pm-3:21 pm

2 stops26h 21m

$827

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 5/6

6:30 am-1:15 pm

1 stop23h 45m

Barcelona-El Prat

Mon 5/12

1:15 pm-12:36 pm

1 stop30h 21m

$836

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 5/5

6:30 am-7:50 am

2 stops18h 20m

Barcelona-El Prat

Sun 5/11

12:15 pm-7:58 pm

1 stop14h 43m

$841

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 4/24

5:37 pm-4:25 pm

2 stops15h 48m

Barcelona-El Prat

Mon 5/5

9:00 am-5:56 pm

2 stops15h 56m

$939

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 6/16

1:24 pm-9:05 am

1 stop12h 41m

Barcelona-El Prat

Wed 7/23

10:45 am-8:23 pm

1 stop16h 38m

$1,067

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 6/15

1:30 pm-9:20 am

1 stop12h 50m

Barcelona-El Prat

Tue 7/15

9:00 am-8:54 pm

1 stop18h 54m

$1,161

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 5/30

9:36 am-6:45 am

2 stops14h 09m

Barcelona-El Prat

Sun 6/15

6:30 pm-9:31 am

1 stop22h 01m

$1,256

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/23

6:30 am-8:20 am

2 stops18h 50m

$608

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/23

3:30 pm-11:55 am

1 stop13h 25m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 13 results

Compare providers for flights from St. Louis to Barcelona-El Prat

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Barcelona-El Prat in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
business-class.com	Price Accuracy3 stars	Trust Score*3 stars
ScholarTrip	Price Accuracy3 stars	Trust Score*3 stars
CheapOair	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Barcelona-El Prat Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Barcelona-El Prat Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Barcelona-El Prat Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Barcelona-El Prat Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Barcelona-El Prat Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Barcelona-El Prat Airport

How far ahead should I book a flight from St. Louis to Barcelona-El Prat Airport?

The best time to book flights from St. Louis to Barcelona-El Prat Airport is 29 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis to Barcelona-El Prat Airport?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Barcelona-El Prat Airport (average of $523). Flying from St. Louis to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,079). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to BCN?

It’s optimal to fly from St. Louis to Barcelona-El Prat Airport in the morning. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in Barcelona-El Prat by month

In terms of precipitation, rainfall in Barcelona-El Prat Airport ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona-El Prat Airport when rainfall is around 0.8 in.

Temperature in Barcelona-El Prat by month

If weather is an important factor for your trip to Barcelona-El Prat Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Barcelona-El Prat

Delta

8.0

Very good

7,911 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,911 reviews

Delta

8.0

Very good

7,911 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very good

7,911 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,636 reviews

Delta

8.0

Very good

7,911 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,911 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada

7.0

Good

9,085 reviews

Delta

8.0

Very good

7,911 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from St. Louis to Barcelona-El Prat?
Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Barcelona-El Prat. You should not have trouble finding flights to Barcelona-El Prat from Lambert-St Louis; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day. You should also have plenty of airline options to choose from since 8 airlines have flights from the St. Louis airport to Barcelona-El Prat. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.
What are the cheapest airlines flying from St. Louis to Barcelona-El Prat Airport round-trip?
Our cheapest airline available from St. Louis to Barcelona-El Prat Airport is British Airways. Our recent data shows that you can find tickets from as low as $827 on this airline. Additional options worth looking into are United Airlines and Air Canada, starting at $836 and $841 round-trip. British Airways is priced at 15% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from St. Louis to Barcelona-El Prat Airport one-way?
One-way options have recently been found by users for as low as $463 on Delta. Other airlines that offer cheap prices include United Airlines from $578 and American Airlines from $583 one-way.
Can I find deals for flights from St. Louis to Barcelona-El Prat that include hotel bookings?
Yes. In addition to deals on St. Louis to Barcelona-El Prat flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Barcelona-El Prat?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Barcelona-El Prat.
Can I find deals for business class flights from St. Louis to Barcelona-El Prat?
Yes. Cheapflights offers flight deals from St. Louis to Barcelona-El Prat by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Barcelona-El Prat Airport?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Barcelona-El Prat Airport (average of $523). Flying from St. Louis to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,079). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Calella

Castelldefels

Cadaques

L'Hospitalet de Llobregat

El Prat de Llobregat

Badalona

Pineda de Mar

Santa Susanna

Tossa de Mar

Browse thousands of different options on Cheapflights for your next trip

Top 8 airlines flying from St. Louis to Barcelona-El Prat

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$530	Average$963	FlexibilityNo cancel fee	On-time76%
KLM	Cheapest$540	Average$810	FlexibilityNo cancel fee	On-time75%
British Airways	Cheapest$602	Average$966	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$602	Average$917	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$632	Average$1,043	FlexibilityNo cancel fee	On-time71%
Iberia	Cheapest$689	Average$1,098	FlexibilityNo cancel fee	On-time77%
Air Canada	Cheapest$712	Average$1,120	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$716	Average$1,096	FlexibilityNo cancel fee	On-time69%

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$463+ Cheap flights from St. Louis (STL) to Barcelona-El Prat (BCN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Barcelona-El Prat with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Barcelona-El Prat are usually found in February or January, booked 29 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from St. Louis to Barcelona-El Prat

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Barcelona-El Prat

Cheapest flights from St. Louis to Barcelona-El PratExplore the most affordable flight options available from St. Louis to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Explore the most affordable flight options available from St. Louis to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Barcelona-El Prat Airport that are best for you.

Compare providers for flights from St. Louis to Barcelona-El Prat

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Barcelona-El Prat in April.

Best time to book a flight from St. Louis to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Barcelona-El Prat Airport

How far ahead should I book a flight from St. Louis to Barcelona-El Prat Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Barcelona-El Prat. Price data was last updated on April 4, 2025.

What is the cheapest month to book a flight from St. Louis to Barcelona-El Prat Airport?

What is the cheapest time of day to fly from STL to BCN?

Find hourly flight availability from St. Louis to Barcelona-El Prat. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

Rainfall in Barcelona-El Prat by month

Plan your trip to Barcelona-El Prat by taking into account the average rainfall totals by month.

Temperature in Barcelona-El Prat by month

Plan your trip to Barcelona-El Prat by taking into account the average temperature totals by month.

Reviews of airlines servicing Barcelona-El Prat

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Barcelona-El Prat. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to Barcelona-El Prat?

What are the cheapest airlines flying from St. Louis to Barcelona-El Prat Airport round-trip?

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Alternative routes for St. Louis to Barcelona-El Prat

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Top 8 airlines flying from St. Louis to Barcelona-El Prat

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Cheapest flights from St. Louis to Barcelona-El Prat
Explore the most affordable flight options available from St. Louis to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.