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Barcelona-El Prat

$418+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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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

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Barcelona-El Prat (BCN). 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 abril 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$645
(Booking.com)

One-way from

$418
(Ovago)

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
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Highest demand for flights based on searches. 20% potential increase in price ($257 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 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 abril 29, 2025.

This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/19:50 amSTL - BCN
1 stop17h 20mIberia
sáb. 9/1312:20 pmBCN - STL
1 stop17h 07mIberia
Deal found 4/29$642
This Delta deal was found by Cheapflights users on 4/29. 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.
lun. 9/12:18 pmSTL - BCN
2 stops17h 32mDelta
sáb. 9/136:10 amBCN - STL
2 stops18h 52mDelta
Deal found 4/29$687
This oojo deal was found by Cheapflights users on 4/29. 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.
jue. 9/258:01 pmSTL - BCN
2 stops16h 44mBritish Airways
lun. 10/68:25 pmBCN - STL
2 stops26h 43mBritish Airways
Deal found 4/29$698
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/234:00 pmSTL - BCN
2 stops32h 50mAir Canada
sáb. 9/612:10 pmBCN - STL
2 stops33h 09mAir Canada
Deal found 4/29$711
This American Airlines deal was found by Cheapflights users on 4/29. 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.
jue. 9/256:25 amSTL - BCN
1 stop19h 40mAmerican Airlines
lun. 10/610:45 amBCN - STL
1 stop16h 38mAmerican Airlines
Deal found 4/29$722
This United Airlines deal was found by Cheapflights users on 4/29. 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.
sáb. 8/235:30 pmSTL - BCN
2 stops31h 20mUnited Airlines
sáb. 9/612:10 pmBCN - STL
1 stop14h 47mUnited Airlines
Deal found 4/29$733
This Air Canada deal was found by Cheapflights users on 4/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/99:09 amSTL - BCN
2 stops15h 41mMultiple Airlines
sáb. 8/161:15 pmBCN - STL
2 stops37h 45mMultiple Airlines
Deal found 4/29$1,053
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/11:00 pmSTL - BCN
1 stop12h 20mLufthansa
dom. 6/151:50 pmBCN - STL
2 stops15h 57mLufthansa
Deal found 4/29$1,196
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/136:00 amSTL - BCN
2 stops33h 25mAer Lingus
vie. 5/1611:00 amBCN - STL
2 stops19h 51mAer Lingus
Deal found 4/29$1,215
This KLM deal was found by Cheapflights users on 4/29. 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.
jue. 7/31:30 pmSTL - BCN
1 stop12h 50mKLM
mié. 7/911:35 amBCN - STL
1 stop19h 18mKLM
Deal found 4/29$3,042

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Barcelona-El Prat 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 abril 29, 2025.
Use the filters below to find and compare flights from St. Louis to Barcelona-El Prat Airport that are best for you.

Fly from

St. Louis

Fly to

Barcelona-El Prat

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

lun. 9/1

9:50 am-10:10 am

1 stop17h 20m

Barcelona-El Prat

sáb. 9/13

12:20 pm-10:27 pm

1 stop17h 07m

$642

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

lun. 9/1

2:18 pm-2:50 pm

2 stops17h 32m

Barcelona-El Prat

sáb. 9/13

6:10 am-6:02 pm

2 stops18h 52m

$687

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

jue. 9/25

8:01 pm-7:45 pm

2 stops16h 44m

Barcelona-El Prat

lun. 10/6

8:25 pm-4:08 pm

2 stops26h 43m

$698

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

sáb. 8/23

4:00 pm-7:50 am

2 stops32h 50m

Barcelona-El Prat

sáb. 9/6

12:10 pm-2:19 pm

2 stops33h 09m

$711

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

jue. 9/25

6:25 am-9:05 am

1 stop19h 40m

Barcelona-El Prat

lun. 10/6

10:45 am-8:23 pm

1 stop16h 38m

$722

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

sáb. 8/23

5:30 pm-7:50 am

2 stops31h 20m

Barcelona-El Prat

sáb. 9/6

12:10 pm-7:57 pm

1 stop14h 47m

$733

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

sáb. 8/9

9:09 am-7:50 am

2 stops15h 41m

Barcelona-El Prat

sáb. 8/16

1:15 pm-8:00 pm

2 stops37h 45m

$1,053

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

dom. 6/1

1:00 pm-8:20 am

1 stop12h 20m

Barcelona-El Prat

dom. 6/15

1:50 pm-10:47 pm

2 stops15h 57m

$1,196

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

mar. 5/13

6:00 am-10:25 pm

2 stops33h 25m

Barcelona-El Prat

vie. 5/16

11:00 am-11:51 pm

2 stops19h 51m

$1,215

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

jue. 7/3

1:30 pm-9:20 am

1 stop12h 50m

Barcelona-El Prat

mié. 7/9

11:35 am-11:53 pm

1 stop19h 18m

$3,042

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 19 results
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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.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
business-class.comPrice Accuracy3 starsTrust Score*2 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Barcelona-El Prat Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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?

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 25, 2025.

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 $1,064). 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-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 abril 29, 2025.

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

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

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

Get insights into the airlines that provide service to Barcelona-El Prat. 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-El Prat. Reviews last updated abril 29, 2025.
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
9,244 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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-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?

    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 $645 on this airline. Additional options worth looking into are British Airways and Iberia, starting at $648 and $693 round-trip. Air Canada is priced at 34% 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 $418 on Aer Lingus. Other airlines that offer cheap prices include American Airlines from $448 and Air Canada from $490 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 $1,064). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Calella
Castelldefels
Cadaques
L'Hospitalet de Llobregat
El Prat de Llobregat
Badalona
Pineda de Mar
Santa Susanna
Tossa de Mar

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Alternative routes for St. Louis to Barcelona-El Prat

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Barcelona-El Prat flights
Springfield to Barcelona-El Prat flights
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Top 8 airlines flying from St. Louis to Barcelona-El Prat

Discover the top 8 airlines that operate flights from St. Louis to Barcelona-El Prat. 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$527Average$958FlexibilityNo cancel feeOn-time76%
KLMCheapest$540Average$751FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$602Average$967FlexibilityNo cancel feeOn-time70%
DeltaCheapest$602Average$1,069FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$632Average$1,074FlexibilityNo cancel feeOn-time71%
IberiaCheapest$689Average$1,066FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$697Average$1,096FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$705Average$1,133FlexibilityNo cancel feeOn-time67%

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