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$317+ 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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Dec 19 — Dec 261
Fri 12/19
Fri 12/26
1 adult, Economy
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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 November 19, 2025.

This Delta deal was found by Cheapflights users on 11/16. 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.
Mon 12/17:05 amSTL - BCN
1 stop18h 35mDelta
Fri 1/3010:55 amBCN - STL
1 stop19h 42mDelta
Deal found 11/16$434
This Delta deal was found by Cheapflights users on 11/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:50 amMCI - BCN
1 stop19h 50mDelta
Wed 12/1010:15 amBCN - MCI
1 stop19h 44mDelta
Deal found 11/17$434
This Delta deal was found by Cheapflights users on 11/16. 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.
Tue 12/25:12 pmSTL - BCN
1 stop32h 28mDelta
Thu 1/2910:15 amBCN - STL
2 stops17h 28mDelta
Deal found 11/16$438
This Delta deal was found by Cheapflights users on 11/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:50 amMCI - BCN
2 stops19h 10mDelta
Fri 12/1210:15 amBCN - MCI
2 stops19h 09mDelta
Deal found 11/17$438
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Sun 11/308:35 pmMCI - BCN
2 stops30h 00mUnited Airlines
Wed 12/1010:30 amBCN - MCI
1 stop16h 24mUnited Airlines
Deal found 11/17$439
This Delta deal was found by Cheapflights users on 11/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:42 pmMCI - BCN
2 stops14h 18mDelta
Wed 1/1410:55 amBCN - MCI
1 stop16h 07mDelta
Deal found 11/17$453
This KLM deal was found by Cheapflights users on 11/17. 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.
Wed 12/317:05 amMCI - BCN
1 stop18h 35mKLM
Sat 1/1710:15 amBCN - MCI
1 stop16h 04mKLM
Deal found 11/17$459
This Delta deal was found by Cheapflights users on 11/16. 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.
Tue 12/26:00 amSTL - BCN
1 stop19h 40mDelta
Wed 2/46:00 amBCN - STL
2 stops21h 43mDelta
Deal found 11/16$461
This Delta deal was found by Cheapflights users on 11/16. 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.
Wed 12/32:07 pmSTL - BCN
1 stop11h 33mDelta
Fri 1/3011:10 amBCN - STL
2 stops16h 33mDelta
Deal found 11/16$462
This Air Canada deal was found by Cheapflights users on 11/16. 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.
Sat 11/294:05 pmSTL - BCN
2 stops34h 30mAir Canada
Thu 1/291:35 pmBCN - STL
2 stops40h 23mAir Canada
Deal found 11/16$463
This Delta deal was found by Cheapflights users on 11/18. 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.
Wed 11/196:40 amSTL - BCN
2 stops18h 20mDelta
Thu 12/46:00 amBCN - STL
2 stops24h 42mDelta
Deal found 11/18$465
This Air Canada deal was found by Cheapflights users on 11/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:43 pmMCI - BCN
2 stops55h 52mAir Canada
Thu 12/111:35 pmBCN - MCI
2 stops39h 23mAir Canada
Deal found 11/17$466

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 November 19, 2025.

Round-trip from

$412
(Flighttix)

One-way from

$317
(FlightHub)

Popular in

June

Cheapest in

February

Average price

$666
From Missouri to Barcelona
Search Deals
One-way flight from Missouri to Barcelona
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($288 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 November 19, 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

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 12/1

7:05 am-8:40 am

1 stop18h 35m

Barcelona-El Prat

Fri 1/30

10:55 am-11:37 pm

1 stop19h 42m

$434

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Wed 12/3

12:45 pm-8:20 am

1 stop12h 35m

Barcelona-El Prat

Wed 12/10

10:30 am-7:54 pm

1 stop16h 24m

$434

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 12/3

6:00 am-8:40 am

1 stop19h 40m

Barcelona-El Prat

Fri 1/30

10:55 am-3:56 pm

1 stop36h 01m

$434

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 12/2

11:40 am-8:40 am

1 stop14h 00m

Barcelona-El Prat

Fri 1/30

10:55 am-8:37 pm

1 stop16h 42m

$434

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Wed 12/31

5:43 am-8:40 am

1 stop19h 57m

Barcelona-El Prat

Wed 1/14

10:55 am-8:02 pm

1 stop16h 07m

$434

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Tue 12/2

5:12 pm-8:40 am

1 stop32h 28m

Barcelona-El Prat

Wed 12/10

10:15 am-10:59 pm

1 stop19h 44m

$434

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Mon 12/1

3:25 pm-8:40 am

1 stop34h 15m

Barcelona-El Prat

Fri 12/12

10:55 am-4:08 pm

1 stop36h 13m

$434

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Mon 12/1

3:25 pm-8:40 am

1 stop34h 15m

Barcelona-El Prat

Tue 12/9

10:15 am-10:59 pm

1 stop19h 44m

$434

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/26

6:40 am-8:00 am

2 stops18h 20m

Barcelona-El Prat

Thu 12/4

10:55 am-11:42 pm

1 stop19h 47m

$438

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 12/3

7:05 am-8:40 am

1 stop18h 35m

Barcelona-El Prat

Thu 1/29

10:15 am-11:37 pm

2 stops20h 22m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

Showing 1-10 of 40 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 $449). Flying from Missouri to Barcelona in June is currently the most expensive (average of $1,019). 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 November 19, 2025.

One of the essential ways to save on airfare from Missouri to Barcelona is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.

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 $434, Delta can have you in Barcelona from Missouri in 12h 35m. 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 British Airways, with whom users have recently found tickets for as low as $317. However, be on the lookout for offers from KLM and Lufthansa, 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 $449). Flying from Missouri to Barcelona in June is currently the most expensive (average of $1,019). 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

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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 10 airlines flying from Missouri to Barcelona

Discover the top 10 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 November 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$483Average$771FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$531Average$1,061FlexibilityNo cancel feeOn-time69%
DeltaCheapest$532Average$936FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$532Average$1,152FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$533Average$752FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$568Average$931FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$582Average$707FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$590Average$960FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$624Average$1,239FlexibilityNo cancel feeOn-time67%
IberiaCheapest$631Average$1,215FlexibilityNo cancel feeOn-time77%

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