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$303+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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The best prices from Lambert-St Louis to Barcelona are usually found in February or January, booked 63 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 January 21, 2025.

Round-trip from

$567
(United Airlines)

One-way from

$303
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$773
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 ($311 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in January 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 January 21, 2025.

This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/261:00 pmSTL - BCN
1 stop12h 20mUnited Airlines
Tue 3/412:15 pmBCN - STL
2 stops34h 25mUnited Airlines
Deal found 1/20$567
This Gotogate deal was found by Cheapflights users on 1/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/23:50 pmSTL - BCN
2 stops35h 00mAir Canada
Tue 2/185:55 amBCN - STL
2 stops40h 11mAir Canada
Deal found 1/21$569
This Finnair deal was found by Cheapflights users on 1/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/102:15 pmSTL - BCN
2 stops15h 55mMultiple Airlines
Fri 2/212:40 pmBCN - STL
1 stop16h 00mMultiple Airlines
Deal found 1/21$585
This American Airlines deal was found by Cheapflights users on 1/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/26:00 amSTL - BCN
1 stop20h 00mAmerican Airlines
Tue 2/181:30 pmBCN - STL
1 stop30h 09mAmerican Airlines
Deal found 1/21$587
This oojo deal was found by Cheapflights users on 1/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/272:00 pmSTL - BCN
1 stop12h 00mBritish Airways
Mon 2/38:55 pmBCN - STL
2 stops29h 35mBritish Airways
Deal found 1/20$610
This Expedia deal was found by Cheapflights users on 1/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/123:45 pmSTL - BCN
1 stop17h 30mLufthansa
Wed 2/196:50 amBCN - STL
1 stop14h 05mLufthansa
Deal found 1/20$615
This Aeromexico deal was found by Cheapflights users on 1/20. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/84:40 pmSTL - BCN
1 stop32h 00mAir France
Thu 3/209:45 amBCN - STL
1 stop14h 20mAir France
Deal found 1/20$648
This eDestinos deal was found by Cheapflights users on 1/20. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3112:01 pmSTL - BCN
1 stop15h 09mIberia
Wed 4/2312:15 pmBCN - STL
1 stop17h 14mIberia
Deal found 1/20$696
This Delta deal was found by Cheapflights users on 1/21. 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.
Sat 5/105:40 pmSTL - BCN
1 stop30h 35mDelta
Thu 5/229:30 amBCN - STL
1 stop15h 31mDelta
Deal found 1/21$997
This KLM deal was found by Cheapflights users on 1/21. 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.
Wed 5/147:10 pmSTL - BCN
2 stops14h 15mKLM
Fri 5/236:20 amBCN - STL
2 stops16h 38mKLM
Deal found 1/21$1,043
This FlightHub deal was found by Cheapflights users on 1/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:18 pmSTL - BCN
2 stops34h 17mTurkish Airlines
Sat 9/272:40 pmBCN - STL
2 stops30h 38mTurkish Airlines
Deal found 1/20$1,122

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 2/26

1:00 pm-8:20 am

1 stop12h 20m

Barcelona-El Prat

Tue 3/4

12:15 pm-3:40 pm

2 stops34h 25m

$567

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 2/2

3:50 pm-9:50 am

2 stops35h 00m

Barcelona-El Prat

Tue 2/18

5:55 am-3:06 pm

2 stops40h 11m

$569

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 2/10

2:15 pm-1:10 pm

2 stops15h 55m

Barcelona-El Prat

Fri 2/21

2:40 pm-11:40 pm

1 stop16h 00m

$585

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 2/2

6:00 am-9:00 am

1 stop20h 00m

Barcelona-El Prat

Tue 2/18

1:30 pm-12:39 pm

1 stop30h 09m

$587

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 2/3

2:00 pm-9:00 am

1 stop12h 00m

Barcelona-El Prat

Mon 2/10

8:55 pm-4:23 pm

2 stops26h 28m

$610

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 2/12

3:45 pm-4:15 pm

1 stop17h 30m

Barcelona-El Prat

Wed 2/19

6:50 am-1:55 pm

1 stop14h 05m

$615

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 3/8

4:40 pm-7:40 am

1 stop32h 00m

Barcelona-El Prat

Thu 3/20

9:45 am-6:05 pm

1 stop14h 20m

$648

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 3/31

12:01 pm-10:10 am

1 stop15h 09m

Barcelona-El Prat

Wed 4/23

12:15 pm-10:29 pm

1 stop17h 14m

$696

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 5/10

5:40 pm-7:15 am

1 stop30h 35m

Barcelona-El Prat

Thu 5/22

9:30 am-6:01 pm

1 stop15h 31m

$997

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 5/14

7:10 pm-4:25 pm

2 stops14h 15m

Barcelona-El Prat

Fri 5/23

6:20 am-3:58 pm

2 stops16h 38m

$1,043

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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 January 17, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Barcelona, you should look to book at least 63 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 $1,097). 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 January 21, 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 January 21, 2025.
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

Scandinavian Airlines
7.3
Good
1,320 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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 9 different airlines.

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

    United Airlines, at $567, was found to be the cheapest airline from St. Louis to Barcelona.Alternate airlines to your destination round-trip include Air Canada and American Airlines. You may be able to fly from St. Louis to Barcelona for 43% 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 American Airlines ($473), United Airlines ($688), and British Airways ($692).

  • 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 $1,097). 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.

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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 9 airlines flying from St. Louis to Barcelona

Discover the top 9 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$490Average$854FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$530Average$944FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$602Average$948FlexibilityNo cancel feeOn-time70%
DeltaCheapest$602Average$892FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$630Average$1,054FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$645Average$777FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$665Average$1,098FlexibilityNo cancel feeOn-time69%
IberiaCheapest$697Average$998FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$722Average$1,076FlexibilityNo cancel feeOn-time67%
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