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 Air Canada. Other airlines that offer cheap prices include Lufthansa from $465 and KLM from $468 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 25 days early can save you up to 41% on average compared to booking a flight this week. If booking 25 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 $749 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 $861 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 $975 for the month, but tickets can be as low as $537. Due to multiple factors, prepare for potentially higher prices in June.

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.

$320+ 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”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Lambert-St Louis to Barcelona-El Prat are usually found in February or November, booked 24 days in advance, depart on a Tuesday or Wednesday and return on a Monday

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

Round-trip from	$580 (Gotogate)
One-way from	$320 (Mytrip)
Popular in	June
Cheapest in	February
Average price	$1,347

From Lambert-St Louis to Barcelona-El Prat

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

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Highest demand for flights based on searches. 21% potential increase in price ($272 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).

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Average for round-trip flights in June 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 June 12, 2025.

Wed 9/241:30 pmSTL - BCN

1 stop11h 20mAir Canada

Wed 10/112:10 pmBCN - STL

1 stop14h 47mAir Canada

Deal found 6/11

$544

Tue 9/231:30 pmSTL - BCN

1 stop11h 20mUnited Airlines

Tue 10/712:10 pmBCN - STL

2 stops29h 39mUnited Airlines

Deal found 6/12

$555

Wed 10/19:56 amSTL - BCN

1 stop17h 34mIberia

Fri 10/1010:45 amBCN - STL

1 stop16h 38mIberia

Deal found 6/10

$601

Wed 10/15:55 amSTL - BCN

1 stop21h 35mBritish Airways

Fri 10/1010:45 amBCN - STL

1 stop16h 38mBritish Airways

Deal found 6/10

$607

Mon 8/48:15 amSTL - BCN

1 stop17h 05mMultiple Airlines

Wed 8/2012:10 pmBCN - STL

1 stop14h 50mMultiple Airlines

Deal found 6/12

$625

Fri 10/33:30 pmSTL - BCN

1 stop21h 15mLufthansa

Tue 10/76:50 amBCN - STL

2 stops15h 54mLufthansa

Deal found 6/10

$662

Thu 8/143:42 pmSTL - BCN

2 stops19h 28mScandinavian Airlines

Thu 8/217:00 pmBCN - STL

2 stops33h 27mScandinavian Airlines

Deal found 6/10

$696

Thu 10/212:25 pmSTL - BCN

2 stops24h 25mAustrian Airlines

Fri 10/1010:00 amBCN - STL

2 stops44h 47mAustrian Airlines

Deal found 6/10

$729

Wed 9/104:20 pmSTL - BCN

1 stop12h 35mDelta

Sat 9/279:00 amBCN - STL

1 stop14h 00mDelta

Deal found 6/12

$737

Sat 9/135:25 pmSTL - BCN

2 stops14h 25mAir France

Sat 9/279:00 amBCN - STL

1 stop14h 00mAir France

Deal found 6/12

$816

Thu 9/257:05 pmSTL - BCN

2 stops14h 20mKLM

Tue 9/306:20 amBCN - STL

2 stops16h 40mKLM

Deal found 6/12

$817

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 June 12, 2025.

Mon 8/41:30 pmSTL - BCN

1 stop11h 20mAir Canada

Wed 8/2012:10 pmBCN - STL

2 stops33h 23mAir Canada

Deal found 6/12

$580

Tue 8/126:33 amSTL - BCN

1 stop23h 42mUnited Airlines

Wed 8/201:15 pmBCN - STL

1 stop33h 06mUnited Airlines

Deal found 6/10

$622

Mon 8/48:15 amSTL - BCN

1 stop17h 05mMultiple Airlines

Wed 8/2012:10 pmBCN - STL

1 stop14h 50mMultiple Airlines

Deal found 6/12

$625

Sat 8/165:52 pmSTL - BCN

1 stop33h 18mIberia

Tue 8/2610:45 amBCN - STL

1 stop15h 36mIberia

Deal found 6/10

$643

Thu 8/143:42 pmSTL - BCN

2 stops19h 28mScandinavian Airlines

Thu 8/217:00 pmBCN - STL

2 stops33h 27mScandinavian Airlines

Deal found 6/10

$696

Wed 9/104:20 pmSTL - BCN

1 stop12h 35mDelta

Sat 9/279:00 amBCN - STL

1 stop14h 00mDelta

Deal found 6/12

$737

Fri 8/151:15 pmSTL - BCN

1 stop12h 50mBritish Airways

Fri 8/2210:15 amBCN - STL

2 stops15h 54mBritish Airways

Deal found 6/10

$748

Fri 8/156:49 pmSTL - BCN

2 stops14h 36mKLM

Fri 8/226:20 amBCN - STL

2 stops16h 46mKLM

Deal found 6/10

$827

Sun 8/173:30 pmSTL - BCN

1 stop13h 25mLufthansa

Sat 8/236:55 pmBCN - STL

1 stop25h 35mLufthansa

Deal found 6/10

$911

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 June 12, 2025 and is based on user searches.

Thu 6/125:30 pmSTL - BCN

2 stops32h 30mAir France

Mon 6/169:15 pmBCN - STL

2 stops26h 10mAir France

Deal found 6/12

$2,115

Tue 6/176:30 amSTL - BCN

1 stop23h 45mUnited Airlines

Sat 6/281:15 pmBCN - STL

1 stop30h 21mUnited Airlines

Deal found 6/10

$1,879

Wed 6/1810:08 amSTL - BCN

1 stop17h 02mIberia

Tue 7/157:20 amBCN - STL

2 stops19h 59mIberia

Deal found 6/10

$1,723

Wed 6/187:20 amSTL - BCN

2 stops20h 00mAer Lingus

Tue 7/1511:00 amBCN - STL

2 stops19h 51mAer Lingus

Deal found 6/11

$1,810

Wed 6/188:10 amSTL - BCN

2 stops16h 40mAir Canada

Tue 7/1512:10 pmBCN - STL

1 stop15h 40mAir Canada

Deal found 6/12

$1,812

Fri 6/201:00 pmSTL - BCN

3 stops18h 45mMultiple Airlines

Sat 6/283:00 pmBCN - STL

3 stops33h 04mMultiple Airlines

Deal found 6/11

$1,547

Fri 6/203:30 pmSTL - BCN

1 stop17h 00mLufthansa

Sat 6/286:55 pmBCN - STL

1 stop25h 35mLufthansa

Deal found 6/11

$1,833

Sat 6/281:04 pmSTL - BCN

2 stops15h 31mBrussels Airlines

Wed 7/912:25 pmBCN - STL

2 stops37h 35mBrussels Airlines

Deal found 6/10

$2,209

Mon 6/301:24 pmSTL - BCN

1 stop12h 41mIberia

Wed 7/97:20 amBCN - STL

2 stops23h 31mIberia

Deal found 6/10

$904

Mon 6/304:10 pmSTL - BCN

2 stops15h 30mKLM

Fri 7/116:20 amBCN - STL

2 stops17h 22mKLM

Deal found 6/10

$1,282

Tue 7/11:30 pmSTL - BCN

1 stop11h 20mUnited Airlines

Thu 7/1012:10 pmBCN - STL

2 stops29h 30mUnited Airlines

Deal found 6/10

$855

Tue 7/15:31 pmSTL - BCN

2 stops22h 34mLufthansa

Mon 7/712:50 pmBCN - STL

2 stops33h 57mLufthansa

Deal found 6/10

$935

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 June 12, 2025.

Mon 8/410:47 amSTL - BCN

3 stops28h 03mMultiple Airlines

Deal found 6/10

$320

Mon 8/41:30 pmSTL - BCN

1 stop11h 20mAir Canada

Deal found 6/10

$463

Mon 8/41:04 pmSTL - BCN

1 stop12h 16mLufthansa

Deal found 6/10

$465

Tue 10/2111:51 amSTL - BCN

1 stop14h 29mKLM

Deal found 6/9

$468

Sat 10/118:01 pmSTL - BCN

1 stop31h 29mIberia

Deal found 6/12

$480

Fri 8/151:30 pmSTL - BCN

1 stop11h 20mUnited Airlines

Deal found 6/10

$513

Mon 7/216:10 amSTL - BCN

2 stops33h 15mAer Lingus

Deal found 6/12

$515

Mon 7/219:40 amSTL - BCN

2 stops14h 05mAmerican Airlines

Deal found 6/10

$558

Wed 6/185:38 pmSTL - BCN

2 stops59h 47mWestJet

Deal found 6/11

$668

Tue 6/241:24 pmSTL - BCN

1 stop12h 41mBritish Airways

Deal found 6/12

$734

Sun 10/124:40 pmSTL - BCN

2 stops17h 30mDelta

Deal found 6/10

$981

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

Wed 9/24

1:30 pm-7:50 am

1 stop11h 20m

Barcelona-El Prat

Wed 10/1

12:10 pm-7:57 pm

1 stop14h 47m

$544

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 9/23

1:30 pm-7:50 am

1 stop11h 20m

Barcelona-El Prat

Tue 10/7

12:10 pm-10:49 am

2 stops29h 39m

$555

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 10/1

9:56 am-10:30 am

1 stop17h 34m

Barcelona-El Prat

Fri 10/10

10:45 am-8:23 pm

1 stop16h 38m

$601

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 10/1

5:55 am-10:30 am

1 stop21h 35m

Barcelona-El Prat

Fri 10/10

10:45 am-8:23 pm

1 stop16h 38m

$607

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 8/4

8:15 am-8:20 am

1 stop17h 05m

Barcelona-El Prat

Wed 8/20

12:10 pm-8:00 pm

1 stop14h 50m

$625

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 10/3

3:30 pm-7:45 pm

1 stop21h 15m

Barcelona-El Prat

Tue 10/7

6:50 am-3:44 pm

2 stops15h 54m

$662

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 8/14

3:42 pm-6:10 pm

2 stops19h 28m

Barcelona-El Prat

Thu 8/21

7:00 pm-9:27 pm

2 stops33h 27m

$696

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 10/2

12:25 pm-7:50 pm

2 stops24h 25m

Barcelona-El Prat

Fri 10/10

10:00 am-11:47 pm

2 stops44h 47m

$729

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 9/10

4:20 pm-11:55 am

1 stop12h 35m

Barcelona-El Prat

Sat 9/27

9:00 am-4:00 pm

1 stop14h 00m

$737

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 9/13

5:25 pm-2:50 pm

2 stops14h 25m

Barcelona-El Prat

Sat 9/27

9:00 am-4:00 pm

1 stop14h 00m

$816

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 22 results

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 24 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 $1,062). 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

Read through reviews of airlines operating flights from St. Louis to Barcelona, such as Delta, KLM and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,946 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Scandinavian Airlines

7.3

Good

1,387 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 Air Canada. Our recent data shows that you can find tickets from as low as $580 on this airline. Additional options worth looking into are United Airlines and Iberia, starting at $622 and $643 round-trip. Air Canada is priced at 40% 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 Air Canada. Other airlines that offer cheap prices include Lufthansa from $465 and KLM from $468 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 $1,062). 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

Browse thousands of different options on Cheapflights for your next trip

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

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest$468	Average$751	FlexibilityNo cancel fee	On-time75%
Lufthansa	Cheapest$530	Average$1,022	FlexibilityNo cancel fee	On-time76%
British Airways	Cheapest$602	Average$936	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$602	Average$1,040	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$630	Average$1,041	FlexibilityNo cancel fee	On-time71%
Iberia	Cheapest$631	Average$1,061	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$637	Average$1,086	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$673	Average$1,235	FlexibilityNo cancel fee	On-time67%

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$320+ 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 8/4. 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 November, booked 24 days in advance, depart on a Tuesday or Wednesday and return on a Monday

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

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 June 12, 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 June 12, 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.

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 June 9, 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 June 12, 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

Read through reviews of airlines operating flights from St. Louis to Barcelona, such as Delta, KLM and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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 June 12, 2025.