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$255+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Mar 20 — Mar 271
Fri 3/20
Fri 3/27
1 adult, Economy
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Cheap 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 February 18, 2026.

This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:15 pm
STL
-
BCN
1 stop34h 00m
United Airlines
Tue 4/281:15 pm
BCN
-
STL
1 stop33h 09m
United Airlines
Deal found 2/18$467
This United Airlines deal was found by Cheapflights users on 2/15. 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 4/126:15 am
MCI
-
BCN
1 stop24h 00m
United Airlines
Tue 4/2112:15 pm
BCN
-
MCI
2 stops33h 10m
United Airlines
Deal found 2/15$467
This United Airlines deal was found by Cheapflights users on 2/16. 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.
Sun 4/126:15 am
MCI
-
BCN
1 stop24h 00m
United Airlines
Wed 4/221:15 pm
BCN
-
MCI
2 stops28h 12m
United Airlines
Deal found 2/16$472
This Booking.com deal was found by Cheapflights users on 2/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/124:05 pm
STL
-
BCN
2 stops32h 55m
Air Canada
Tue 4/281:15 pm
BCN
-
STL
1 stop33h 09m
Air Canada
Deal found 2/15$474
This United Airlines deal was found by Cheapflights users on 2/15. 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 4/139:55 am
MCI
-
BCN
2 stops22h 00m
United Airlines
Tue 4/2112:15 pm
BCN
-
MCI
2 stops33h 10m
United Airlines
Deal found 2/15$475
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:15 pm
STL
-
BCN
1 stop34h 00m
United Airlines
Tue 4/283:15 pm
BCN
-
STL
1 stop24h 10m
United Airlines
Deal found 2/18$477
This United Airlines deal was found by Cheapflights users on 2/15. 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 4/115:45 pm
MCI
-
BCN
1 stop31h 35m
United Airlines
Wed 4/221:15 pm
BCN
-
MCI
2 stops28h 12m
United Airlines
Deal found 2/15$477
This Delta deal was found by Cheapflights users on 2/17. 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 4/1312:05 pm
MCI
-
BCN
1 stop13h 40m
Delta
Tue 4/283:15 pm
BCN
-
MCI
1 stop35h 04m
Delta
Deal found 2/17$478
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/129:10 am
STL
-
BCN
1 stop21h 05m
United Airlines
Fri 5/112:15 pm
BCN
-
STL
1 stop14h 50m
United Airlines
Deal found 2/18$480
This United Airlines deal was found by Cheapflights users on 2/15. 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 4/139:55 am
MCI
-
BCN
2 stops22h 00m
United Airlines
Thu 4/231:15 pm
BCN
-
MCI
2 stops32h 10m
United Airlines
Deal found 2/15$480
This oojo deal was found by Cheapflights users on 2/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:33 pm
STL
-
BCN
2 stops16h 42m
British Airways
Mon 4/208:35 pm
BCN
-
STL
1 stop29h 55m
British Airways
Deal found 2/17$481
This United Airlines deal was found by Cheapflights users on 2/16. 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.
Sun 4/126:15 am
MCI
-
BCN
1 stop24h 00m
United Airlines
Tue 4/2812:15 pm
BCN
-
MCI
2 stops35h 33m
United Airlines
Deal found 2/16$481

Find flight deals from Missouri to Barcelona

Keep the following information in mind while searching for Missouri to Barcelona flight deals. Data was last updated February 18, 2026.

Round-trip from

$467
(United Airlines)

One-way from

$255
(oojo)

Popular in

June

Cheapest in

January

Average price

$683
From Missouri to Barcelona
Search Deals
One-way flight from Missouri to Barcelona
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($307 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 18, 2026.
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 4/13

7:45 am-1:15 pm

1 stop22h 30m

Barcelona-El Prat

Tue 4/28

1:15 pm-3:24 pm

1 stop33h 09m

$467

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/14

8:15 pm-1:15 pm

1 stop34h 00m

Barcelona-El Prat

Tue 4/28

12:15 pm-9:08 pm

2 stops39h 53m

$467

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/15

7:45 am-1:15 pm

1 stop22h 30m

Barcelona-El Prat

Thu 4/30

1:15 pm-12:06 pm

1 stop29h 51m

$467

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 4/12

6:15 am-1:15 pm

1 stop24h 00m

Barcelona-El Prat

Tue 4/21

12:15 pm-9:59 pm

2 stops40h 44m

$467

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Wed 4/15

8:00 am-1:15 pm

1 stop22h 15m

Barcelona-El Prat

Wed 4/22

1:15 pm-9:59 pm

2 stops39h 44m

$472

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 4/12

6:15 am-1:15 pm

1 stop24h 00m

Barcelona-El Prat

Wed 4/22

1:15 pm-10:27 am

2 stops28h 12m

$472

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Sun 4/12

6:15 am-8:20 am

2 stops19h 05m

Barcelona-El Prat

Thu 4/23

1:15 pm-10:27 am

2 stops28h 12m

$476

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 4/12

8:15 pm-1:15 pm

1 stop34h 00m

Barcelona-El Prat

Tue 4/28

3:15 pm-8:25 am

1 stop24h 10m

$477

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 4/12

4:05 pm-8:00 am

2 stops32h 55m

Barcelona-El Prat

Tue 4/28

12:15 pm-3:24 pm

2 stops34h 09m

$478

Kansas CityBarcelona

MCI - BCN

MCIBCN

Kansas City

Mon 4/13

6:30 am-8:45 am

2 stops19h 15m

Barcelona-El Prat

Tue 4/28

3:15 pm-7:19 pm

1 stop35h 04m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 41 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, February is the cheapest month in which you can book a flight from Missouri to Barcelona (average of $433). Flying from Missouri to Barcelona in June is currently the most expensive (average of $1,028). 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.

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 $494, United Airlines can have you in Barcelona from Missouri in 13h 41m. The distance between Missouri and Barcelona is about 4832 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 $299. However, be on the lookout for offers from United Airlines and American 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, February is the cheapest month in which you can book a flight from Missouri to Barcelona (average of $433). Flying from Missouri to Barcelona in June is currently the most expensive (average of $1,028). 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 February 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$433Average$789FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$449Average$870FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$485Average$1,105FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$490Average$826FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$510Average$1,146FlexibilityNo cancel feeOn-time76%
DeltaCheapest$532Average$910FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$533Average$752FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$582Average$707FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$593Average$1,200FlexibilityNo cancel feeOn-time67%
IberiaCheapest$631Average$1,157FlexibilityNo cancel feeOn-time77%

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