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$692+ Cheap flights from St. Louis (STL) to Barcelona

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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The best prices from Lambert-St Louis to Barcelona are usually found in February or January, booked 45 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from St. Louis to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 22, 2025.

Round-trip from

$747
(Cheapflightsfares)

One-way from

$692
(oojo)

Popular in

June

Cheapest in

February

Average price

$684
From Lambert-St Louis to Barcelona
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One-way flight from Lambert-St Louis to Barcelona
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Highest demand for flights based on searches. 23% potential increase in price ($299 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from St. Louis to Barcelona

Cheapest flights from St. Louis to Barcelona
Explore the most affordable flight options available from St. Louis to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

This Orbitz deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:20 amSTL - BCN
2 stops17h 25mIberia
Mon 12/89:05 pmBCN - STL
2 stops42h 38mIberia
Deal found 2/20$701
This United Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/13:30 pmSTL - BCN
1 stop10h 50mUnited Airlines
Tue 4/812:10 pmBCN - STL
2 stops31h 10mUnited Airlines
Deal found 2/21$749
This Delta deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/234:45 pmSTL - BCN
1 stop32h 55mDelta
Tue 4/82:10 pmBCN - STL
1 stop28h 46mDelta
Deal found 2/21$763
This StudentUniverse deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/111:39 amSTL - BCN
1 stop15h 31mFinnair
Tue 4/810:45 amBCN - STL
1 stop18h 27mFinnair
Deal found 2/21$765
This Expedia deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2311:39 amSTL - BCN
2 stops18h 56mBritish Airways
Tue 4/810:45 amBCN - STL
1 stop14h 17mBritish Airways
Deal found 2/21$767
This lol.travel deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/233:50 pmSTL - BCN
2 stops18h 15mAir Canada
Tue 4/812:10 pmBCN - STL
2 stops33h 39mAir Canada
Deal found 2/21$772
This American Airlines deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/211:55 amSTL - BCN
2 stops14h 10mAmerican Airlines
Wed 4/92:00 pmBCN - STL
2 stops16h 33mAmerican Airlines
Deal found 2/22$775
This Finnair deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:45 pmSTL - BCN
1 stop15h 10mMultiple Airlines
Mon 12/811:00 amBCN - STL
1 stop19h 05mMultiple Airlines
Deal found 2/20$810
This FlightHub deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/294:29 pmSTL - BCN
2 stops18h 41mScandinavian Airlines
Wed 4/27:00 pmBCN - STL
2 stops35h 29mScandinavian Airlines
Deal found 2/22$959
This Cheapflightsfares deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/221:12 pmSTL - BCN
2 stops23h 38mAustrian Airlines
Mon 4/288:40 pmBCN - STL
2 stops33h 35mAustrian Airlines
Deal found 2/21$1,063
This FlightHub deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/63:43 pmSTL - BCN
2 stops35h 52mTurkish Airlines
Mon 5/1212:00 pmBCN - STL
2 stops57h 47mTurkish Airlines
Deal found 2/21$1,068
This KLM deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/127:05 amSTL - BCN
1 stop19h 15mKLM
Mon 4/211:20 pmBCN - STL
2 stops17h 16mKLM
Deal found 2/21$1,204

Find flights from St. Louis to Barcelona within your budget

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, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.

Fly from

St. Louis

Fly to

Barcelona

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/2

9:28 am-10:10 am

1 stop17h 42m

Barcelona-El Prat

Wed 4/9

2:00 pm-8:58 pm

1 stop13h 58m

$747

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/1

3:30 pm-9:20 am

1 stop10h 50m

Barcelona-El Prat

Tue 4/8

12:10 pm-12:20 pm

2 stops31h 10m

$749

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 3/23

4:45 pm-7:40 am

1 stop32h 55m

Barcelona-El Prat

Tue 4/8

2:10 pm-11:56 am

1 stop28h 46m

$763

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/1

11:39 am-10:10 am

1 stop15h 31m

Barcelona-El Prat

Tue 4/8

10:45 am-10:12 pm

1 stop18h 27m

$765

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 3/23

11:39 am-12:35 pm

2 stops18h 56m

Barcelona-El Prat

Tue 4/8

10:45 am-6:02 pm

1 stop14h 17m

$767

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 3/23

3:50 pm-4:05 pm

2 stops18h 15m

Barcelona-El Prat

Tue 4/8

12:10 pm-2:49 pm

2 stops33h 39m

$772

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/2

11:55 am-9:05 am

2 stops14h 10m

Barcelona-El Prat

Wed 4/9

2:00 pm-11:33 pm

2 stops16h 33m

$775

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 5/6

12:15 pm-2:45 pm

3 stops19h 30m

Barcelona-El Prat

Mon 5/12

3:00 pm-6:32 pm

3 stops34h 32m

$907

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 3/29

4:29 pm-5:10 pm

2 stops18h 41m

Barcelona-El Prat

Wed 4/2

7:00 pm-11:29 pm

2 stops35h 29m

$959

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/22

1:12 pm-7:50 pm

2 stops23h 38m

Barcelona-El Prat

Mon 4/28

8:40 pm-11:15 pm

2 stops33h 35m

$1,063

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 20 results
1
2

Best time to book a flight from St. Louis to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona 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.

Travel insights for flights from St. Louis to Barcelona

Get recent, data-driven insights about flights from St. Louis to Barcelona including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Barcelona. Price data was last updated on February 14, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Barcelona, you should look to book at least 45 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from St. Louis to Barcelona?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Barcelona (average of $523). Flying from St. Louis to Barcelona in June is currently the most expensive (average of $1,096). 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?

Find hourly flight availability from St. Louis to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.

It’s optimal to fly from St. Louis to Barcelona 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 by month

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

In terms of precipitation, rainfall in Barcelona 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 when rainfall is around 0.8 in.

Temperature in Barcelona by month

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

If weather is an important factor for your trip to Barcelona, 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

Get insights into the airlines that provide service to Barcelona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona. Reviews last updated February 22, 2025.
Delta
8.0
Very good
8,213 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

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
8,213 reviews
Delta
8.0
Very good
8,213 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

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
1,331 reviews
Delta
8.0
Very good
8,213 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

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.

Finnair
7.6
Good
1,271 reviews
Delta
8.0
Very good
8,213 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

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.

Austrian Airlines
7.5
Good
771 reviews
Delta
8.0
Very good
8,213 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

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 France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,213 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

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

Find useful and relevant information for your journey from St. Louis to Barcelona. 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?

    If you book a flight to Barcelona from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Lambert-St Louis to Barcelona per day from 8 different airlines.

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

    Iberia, at $747, was found to be the cheapest airline from St. Louis to Barcelona.Alternate airlines to your destination round-trip include United Airlines and Delta. You may be able to fly from St. Louis to Barcelona for 24% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from St. Louis to Barcelona are British Airways ($692), American Airlines ($693), and Air Canada ($755).

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

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

  • How can I find direct flights from St. Louis to Barcelona?

    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.

  • Can I find deals for business class flights from St. Louis to Barcelona?

    Yes. Cheapflights offers flight deals from St. Louis to Barcelona 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?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Barcelona (average of $523). Flying from St. Louis to Barcelona in June is currently the most expensive (average of $1,096). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Barcelona

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Barcelona-El Prat flights
Kansas City to Barcelona-El Prat flights
Springfield to Barcelona-El Prat flights
Joplin to Barcelona-El Prat flights

Top 8 airlines flying from St. Louis to Barcelona

Discover the top 8 airlines that operate flights from St. Louis to Barcelona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$931FlexibilityNo cancel feeOn-time76%
KLMCheapest$540Average$832FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$602Average$959FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$648Average$1,042FlexibilityNo cancel feeOn-time71%
DeltaCheapest$664Average$895FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$674Average$1,122FlexibilityNo cancel feeOn-time69%
IberiaCheapest$704Average$1,062FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$712Average$1,038FlexibilityNo cancel feeOn-time67%
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