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$321+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
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 October 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:43 pmSTL - BCN
2 stops16h 02mLufthansa
Wed 11/266:50 amBCN - STL
1 stop14h 05mLufthansa
Deal found 10/28$433
This Delta deal was found by Cheapflights users on 10/27. 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 12/29:30 amSTL - BCN
1 stop16h 10mDelta
Tue 12/910:15 amBCN - STL
2 stops29h 55mDelta
Deal found 10/27$438
This Delta deal was found by Cheapflights users on 10/27. 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 12/26:29 amMCI - BCN
2 stops18h 31mDelta
Tue 12/910:15 amBCN - MCI
2 stops30h 41mDelta
Deal found 10/27$438
This CheapOair deal was found by Cheapflights users on 10/27. 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.
Wed 11/266:30 amSTL - BCN
2 stops20h 05mAir Canada
Thu 12/41:35 pmBCN - STL
2 stops33h 05mAir Canada
Deal found 10/27$461
This KLM deal was found by Cheapflights users on 10/28. 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 12/3112:38 pmMCI - BCN
1 stop13h 02mMultiple Airlines
Wed 1/1412:15 pmBCN - MCI
2 stops17h 36mMultiple Airlines
Deal found 10/28$461
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Mon 11/36:43 pmSTL - BCN
1 stop11h 27mUnited Airlines
Wed 11/196:50 amBCN - STL
1 stop14h 05mUnited Airlines
Deal found 10/28$472
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Mon 11/103:14 pmSTL - BCN
1 stop14h 56mUnited Airlines
Wed 11/266:50 amBCN - STL
1 stop14h 05mUnited Airlines
Deal found 10/28$476
This Finnair deal was found by Cheapflights users on 10/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:15 amMCI - BCN
2 stops18h 50mMultiple Airlines
Tue 11/1811:00 amBCN - MCI
2 stops19h 07mMultiple Airlines
Deal found 10/29$476
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Wed 11/52:23 pmMCI - BCN
2 stops16h 17mAmerican Airlines
Wed 11/1211:00 amBCN - MCI
1 stop19h 59mAmerican Airlines
Deal found 10/29$480
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:51 amSTL - BCN
2 stops16h 19mBritish Airways
Thu 12/412:30 pmBCN - STL
1 stop14h 51mBritish Airways
Deal found 10/28$481
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Mon 11/246:43 pmSTL - BCN
1 stop11h 27mUnited Airlines
Tue 12/21:50 pmBCN - STL
2 stops32h 39mUnited Airlines
Deal found 10/28$482
This Finnair deal was found by Cheapflights users on 10/28. 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.
Wed 11/2611:07 amSTL - BCN
1 stop12h 58mMultiple Airlines
Thu 12/412:30 pmBCN - STL
1 stop14h 51mMultiple Airlines
Deal found 10/28$484

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 October 29, 2025.

Round-trip from

$433
(Kiwi.com)

One-way from

$321
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$745
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 ($290 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 29, 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

Wed 1/14

9:59 am-8:00 am

1 stop15h 01m

Barcelona-El Prat

Wed 1/21

10:55 am-10:02 pm

1 stop18h 07m

$434

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 12/2

6:39 am-8:00 am

2 stops18h 21m

Barcelona-El Prat

Tue 12/9

10:15 am-11:29 pm

2 stops20h 14m

$438

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Tue 12/2

10:24 am-8:40 am

1 stop15h 16m

Barcelona-El Prat

Tue 12/9

10:15 am-11:10 pm

2 stops19h 55m

$438

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Wed 1/14

5:50 am-8:00 am

2 stops19h 10m

Barcelona-El Prat

Wed 1/21

10:55 am-10:02 pm

1 stop18h 07m

$438

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Tue 12/2

5:50 am-8:40 am

1 stop19h 50m

Barcelona-El Prat

Tue 12/9

10:15 am-9:56 am

2 stops30h 41m

$438

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Tue 1/13

5:47 pm-3:00 pm

2 stops14h 13m

Barcelona-El Prat

Tue 1/20

10:15 am-7:19 pm

1 stop16h 04m

$452

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Wed 1/7

10:41 am-11:10 am

2 stops17h 29m

Barcelona-El Prat

Thu 1/15

10:15 am-7:19 pm

1 stop16h 04m

$453

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Wed 1/7

10:41 am-11:10 am

2 stops17h 29m

Barcelona-El Prat

Wed 1/21

10:55 am-9:39 am

1 stop29h 44m

$453

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/26

6:30 am-9:35 am

2 stops20h 05m

Barcelona-El Prat

Thu 12/4

1:35 pm-3:40 pm

2 stops33h 05m

$461

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/19

11:51 am-11:10 am

2 stops16h 19m

Barcelona-El Prat

Thu 12/4

12:30 pm-8:21 pm

1 stop14h 51m

$481

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 47 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 $452). 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 October 29, 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, KLM can have you in Barcelona from Missouri in 15h 01m. 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 Air Canada, with whom users have recently found tickets for as low as $391. However, be on the lookout for offers from Lufthansa and United Airlines, 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 $452). 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$532Average$943FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$533Average$1,156FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$533Average$752FlexibilityNo cancel feeOn-time77%
KLMCheapest$533Average$722FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$533Average$1,063FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$582Average$707FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$599Average$918FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$614Average$931FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$624Average$1,238FlexibilityNo cancel feeOn-time67%
IberiaCheapest$631Average$1,244FlexibilityNo cancel feeOn-time77%

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