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$286+ Cheap flights from Missouri 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Missouri to Barcelona

Keep the following information in mind while searching for Missouri to Barcelona flight deals. Data was last updated August 18, 2025.

Round-trip from

$434
(KLM)

One-way from

$286
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$797
From Missouri to Barcelona
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One-way flight from Missouri to Barcelona
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Highest demand for flights based on searches. 31% potential increase in price ($446 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Missouri to Barcelona

Cheapest flights from Missouri to Barcelona
Explore the most affordable flight options available from Missouri to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This KLM deal was found by Cheapflights users on 8/16. 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.
Sun 11/99:59 amMCI - BCN
1 stop15h 01mKLM
Fri 11/2110:55 amBCN - MCI
1 stop18h 26mKLM
Deal found 8/16$434
This Virgin Atlantic deal was found by Cheapflights users on 8/16. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/912:30 pmMCI - BCN
1 stop13h 10mVirgin Atlantic
Fri 11/2110:15 amBCN - MCI
2 stops19h 06mVirgin Atlantic
Deal found 8/16$438
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 11/156:35 pmMCI - BCN
2 stops32h 00mUnited Airlines
Tue 11/251:35 pmBCN - MCI
2 stops31h 46mUnited Airlines
Deal found 8/17$461
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 11/155:30 pmMCI - BCN
1 stop31h 50mUnited Airlines
Wed 11/261:35 pmBCN - MCI
2 stops31h 46mUnited Airlines
Deal found 8/17$466
This KLM deal was found by Cheapflights users on 8/17. 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 11/156:00 amMCI - BCN
1 stop19h 40mKLM
Tue 11/2510:55 amBCN - MCI
1 stop20h 02mKLM
Deal found 8/17$484
This American Airlines deal was found by Cheapflights users on 8/16. 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 11/94:05 pmMCI - BCN
2 stops15h 00mAmerican Airlines
Fri 11/2111:00 amBCN - MCI
1 stop19h 59mAmerican Airlines
Deal found 8/16$487
This Delta deal was found by Cheapflights users on 8/16. 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 11/210:48 amMCI - BCN
2 stops14h 12mDelta
Sun 11/1610:15 amBCN - MCI
2 stops18h 01mDelta
Deal found 8/16$488
This United deal was found by Cheapflights users on 8/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:00 amSTL - BCN
1 stop19h 00mMultiple Airlines
Sun 11/168:30 pmBCN - STL
2 stops34h 14mMultiple Airlines
Deal found 8/16$503
This United Airlines deal was found by Cheapflights users on 8/16. 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 11/125:24 pmSTL - BCN
1 stop12h 41mUnited Airlines
Sun 11/161:55 pmBCN - STL
2 stops38h 59mUnited Airlines
Deal found 8/16$512
This eDestinos deal was found by Cheapflights users on 8/16. 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 10/134:34 pmSTL - BCN
1 stop10h 56mIberia
Thu 10/2310:45 amBCN - STL
1 stop15h 24mIberia
Deal found 8/16$534
This Air Canada deal was found by Cheapflights users on 8/16. 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.
Sun 11/98:00 amMCI - BCN
3 stops18h 35mMultiple Airlines
Fri 11/211:35 pmBCN - MCI
2 stops26h 33mMultiple Airlines
Deal found 8/16$540
This Gotogate deal was found by Cheapflights users on 8/16. 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 9/211:30 pmSTL - BCN
1 stop11h 20mAir Canada
Tue 10/712:10 pmBCN - STL
2 stops14h 28mAir Canada
Deal found 8/16$546

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri 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 August 18, 2025.
Use the filters below to find and compare flights from Missouri to Barcelona that are best for you.

Fly from

Missouri

Fly to

Barcelona

Route

Depart

Return

Price

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 11/9

9:59 am-8:00 am

1 stop15h 01m

Barcelona-El Prat

Fri 11/21

10:55 am-10:21 pm

1 stop18h 26m

$434

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 11/9

12:30 pm-8:40 am

1 stop13h 10m

Barcelona-El Prat

Fri 11/21

10:15 am-10:21 pm

2 stops19h 06m

$438

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 11/9

6:00 am-8:00 am

2 stops19h 00m

Barcelona-El Prat

Fri 11/21

10:15 am-10:21 pm

2 stops19h 06m

$438

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sat 11/15

11:37 am-9:35 am

3 stops38h 58m

Barcelona-El Prat

Tue 11/25

1:35 pm-2:21 pm

2 stops31h 46m

$461

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sat 11/15

3:25 pm-9:35 am

2 stops35h 10m

Barcelona-El Prat

Wed 11/26

1:35 pm-2:21 pm

2 stops31h 46m

$461

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 11/9

1:40 pm-9:00 am

1 stop12h 20m

Barcelona-El Prat

Fri 11/21

11:00 am-11:59 pm

1 stop19h 59m

$484

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 11/2

1:37 pm-8:40 am

1 stop12h 03m

Barcelona-El Prat

Sun 11/16

10:55 am-9:04 pm

1 stop17h 09m

$484

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sat 11/15

6:00 am-8:40 am

1 stop19h 40m

Barcelona-El Prat

Tue 11/25

10:55 am-11:57 pm

1 stop20h 02m

$484

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sat 11/15

7:00 am-8:40 am

1 stop18h 40m

Barcelona-El Prat

Wed 11/26

10:15 am-5:56 pm

1 stop14h 41m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

7:00 am-9:00 am

1 stop19h 00m

Barcelona-El Prat

Sun 11/16

8:30 pm-11:44 pm

2 stops34h 14m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 39 results
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Best time to book a flight from Missouri to Barcelona

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

What is the cheapest month to book a flight from Missouri to Barcelona?

Currently, January is the cheapest month in which you can book a flight from Missouri to Barcelona (average of $523). Flying from Missouri to Barcelona in June is currently the most expensive (average of $1,057). 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 MO to BCN?

Find hourly flight availability from Missouri 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 August 18, 2025.

When flying from Missouri to Barcelona, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Missouri to Barcelona?

Related info for your journey

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

  • How long is the flight from Missouri to Barcelona?

    For as low as $438, KLM can have you in Barcelona from Missouri in 13h 10m. The distance between Missouri and Barcelona is about 4803 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Missouri to Barcelona one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $399. However, be on the lookout for offers from Lufthansa and Virgin Atlantic, as they are both options that can get you from Missouri to Barcelona for a low price.

  • What are the most popular routes from Missouri to Barcelona?

    Most travelers choose Lambert-St Louis - Barcelona-El Prat, Kansas City - Barcelona-El Prat or Springfield-Branson - Barcelona-El Prat when deciding on the best route from Missouri to Barcelona.

  • Can I find deals for flights from Missouri to Barcelona that include hotel bookings?

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

  • How can I find direct flights from Missouri to Barcelona?

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

  • Can I find deals for business class flights from Missouri to Barcelona?

    Yes. Cheapflights offers flight deals from Missouri 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 Missouri to Barcelona?

    Currently, January is the cheapest month in which you can book a flight from Missouri to Barcelona (average of $523). Flying from Missouri to Barcelona in June is currently the most expensive (average of $1,057). 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 Missouri to Barcelona

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Missouri to Barcelona

Discover the top 9 airlines that operate flights from Missouri 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$483Average$789FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$533Average$843FlexibilityNo cancel feeOn-time77%
DeltaCheapest$544Average$952FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$570Average$934FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$573Average$1,027FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$614Average$1,085FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$629Average$1,242FlexibilityNo cancel feeOn-time67%
IberiaCheapest$631Average$1,246FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$635Average$1,141FlexibilityNo cancel feeOn-time71%

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