$324+ Cheap flights from St. Louis (STL) to Barcelona
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Barcelona with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to BarcelonaExplore the most affordable flight options available from St. Louis to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from St. Louis to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm -
1 stop12h 50m
Wed 10/211:15 pm -
1 stop14h 05m
Deal found 9/10![Multiple Airlines logo]()
$551
This Justfly.com deal was found by Cheapflights users on 9/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm -
1 stop12h 50m
Wed 10/211:15 pm -
2 stops29h 58m
Deal found 9/11![Air Canada logo]()
$559
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/126:00 am -
1 stop24h 15m
Wed 10/211:15 pm -
1 stop31h 45m
Deal found 9/11![United Airlines logo]()
$561
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2012:10 pm -
1 stop12h 50m
Wed 9/3012:15 pm -
1 stop13h 26m
Deal found 9/10![United Airlines logo]()
$567
This Justfly.com deal was found by Cheapflights users on 9/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 pm -
1 stop12h 50m
Thu 10/81:15 pm -
1 stop31h 45m
Deal found 9/10![Air Canada logo]()
$572
This Delta deal was found by Cheapflights users on 9/10. 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 9/2812:00 pm -
1 stop17h 50m
Thu 10/811:00 am -
1 stop17h 23m
Deal found 9/10![Delta logo]()
$575
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/292:40 pm -
1 stop11h 40m
Thu 10/81:15 pm -
1 stop14h 05m
Deal found 9/10![United Airlines logo]()
$577
This Delta deal was found by Cheapflights users on 9/10. 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 9/284:59 pm -
1 stop12h 51m
Wed 10/73:15 pm -
2 stops24h 14m
Deal found 9/10![Delta logo]()
$580
This FlightHub deal was found by Cheapflights users on 9/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:25 pm -
1 stop11h 10m
Wed 10/710:45 am -
1 stop16h 03m
Deal found 9/10![British Airways logo]()
$581
This Delta deal was found by Cheapflights users on 9/10. 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 9/207:00 am -
1 stop22h 50m
Wed 9/303:15 pm -
2 stops25h 14m
Deal found 9/10![Delta logo]()
$585
Best flights from St. Louis to BarcelonaDiscover carefully curated flight deals from St. Louis to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from St. Louis to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2612:10 pm -
1 stop12h 50m
Wed 10/73:15 pm -
1 stop13h 06m
Deal found 9/10![United Airlines logo]()
$640
This Finnair deal was found by Cheapflights users on 9/6. 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 10/219:35 pm -
1 stop15h 55m
Wed 10/2810:40 am -
1 stop17h 20m
Deal found 9/6![Multiple Airlines logo]()
$716
This Justfly.com deal was found by Cheapflights users on 9/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/31:40 pm -
2 stops17h 05m
Fri 2/1212:00 pm -
1 stop17h 58m
Deal found 9/8![British Airways logo]()
$728
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2312:28 pm -
1 stop13h 32m
Thu 10/112:00 pm -
1 stop16h 09m
Deal found 9/10![United Airlines logo]()
$641
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/210:53 am -
1 stop19h 22m
Mon 11/91:50 pm -
2 stops16h 34m
Deal found 9/10![United Airlines logo]()
$645
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2312:10 pm -
1 stop12h 50m
Mon 10/51:50 pm -
1 stop30h 35m
Deal found 9/10![United Airlines logo]()
$719
This United Airlines deal was found by Cheapflights users on 9/10. 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 3/16:30 am -
2 stops20h 05m
Thu 3/41:35 pm -
2 stops33h 06m
Deal found 9/10![United Airlines logo]()
$757
This United Airlines deal was found by Cheapflights users on 9/8. 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 1/246:30 am -
1 stop18h 50m
Fri 1/291:35 pm -
2 stops29h 38m
Deal found 9/8![United Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/93:11 pm -
2 stops16h 14m
Fri 10/163:15 pm -
2 stops24h 33m
Deal found 9/7![United Airlines logo]()
$789
Last-minute flights from St. Louis to BarcelonaDiscover last-minute flight deals from St. Louis to Barcelona. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Barcelona. Data last updated September 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2012:10 pm -
1 stop12h 50m
Wed 9/3012:15 pm -
1 stop13h 26m
Deal found 9/10![United Airlines logo]()
$567
This Delta deal was found by Cheapflights users on 9/10. 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 9/207:00 am -
1 stop22h 50m
Wed 9/303:15 pm -
2 stops25h 14m
Deal found 9/10![Delta logo]()
$585
This Delta deal was found by Cheapflights users on 9/10. 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 9/2812:00 pm -
1 stop17h 50m
Thu 10/811:00 am -
1 stop17h 23m
Deal found 9/10![Delta logo]()
$575
This Delta deal was found by Cheapflights users on 9/10. 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 9/284:59 pm -
1 stop12h 51m
Wed 10/73:15 pm -
2 stops24h 14m
Deal found 9/10![Delta logo]()
$580
This Justfly.com deal was found by Cheapflights users on 9/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 pm -
1 stop12h 50m
Thu 10/81:15 pm -
1 stop31h 45m
Deal found 9/10![Air Canada logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/292:40 pm -
1 stop11h 40m
Thu 10/81:15 pm -
1 stop14h 05m
Deal found 9/10![United Airlines logo]()
$577
This FlightHub deal was found by Cheapflights users on 9/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:25 pm -
1 stop11h 10m
Wed 10/710:45 am -
1 stop16h 03m
Deal found 9/10![British Airways logo]()
$581
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm -
1 stop12h 50m
Wed 10/211:15 pm -
1 stop14h 05m
Deal found 9/10![Multiple Airlines logo]()
$551
This Justfly.com deal was found by Cheapflights users on 9/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm -
1 stop12h 50m
Wed 10/211:15 pm -
2 stops29h 58m
Deal found 9/11![Air Canada logo]()
$559
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/126:00 am -
1 stop24h 15m
Wed 10/211:15 pm -
1 stop31h 45m
Deal found 9/11![United Airlines logo]()
$561
One-way flights from St. Louis to BarcelonaSearch for one-way flight options from St. Louis to Barcelona. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from St. Louis to Barcelona. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Thu 10/84:30 pm -
2 stops43h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Fri 10/96:35 pm -
3 stops38h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Thu 10/16:39 pm -
2 stops41h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 9/7. 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.
Sat 10/174:30 pm -
2 stops37h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Thu 12/36:05 pm -
2 stops40h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$357
This Air Canada deal was found by Cheapflights users on 9/10. 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 1/95:28 pm -
2 stops33h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$366
This United Airlines deal was found by Cheapflights users on 9/10. 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 1/95:20 pm -
1 stop32h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$374
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/110:00 am -
2 stops20h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Iberia logo]()
$398
Find flight deals from St. Louis to Barcelona
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Barcelona (S37). 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 September 11, 2026.
Round-trip from | $551 (Mytrip) |
|---|---|
One-way from | $324 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $887 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis 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 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from St. Louis to Barcelona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Fri 10/9
6:35 pm-4:00 pm
3 stops38h 25m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$326
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Sat 1/9
5:20 pm-8:20 am
1 stop32h 00m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$374
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Fri 1/1
10:00 am-1:40 pm
2 stops20h 40m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$398
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Fri 2/26
6:30 am-8:20 am
1 stop18h 50m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$412
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Fri 1/1
6:04 am-9:35 am
3 stops20h 31m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$416
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Sat 10/31
5:34 pm-9:35 am
2 stops34h 01m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$467
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Wed 10/28
10:35 am-11:10 am
2 stops18h 35m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$468
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Sat 10/17
4:50 pm-9:00 am
1 stop33h 10m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$476
Quickest round-trip
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Wed 10/28
4:40 pm-4:30 pm
1 stop17h 50m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$477
St. LouisBarcelona
STL Lambert-St Louis - BCN Barcelona-El Prat
STLBCN
Lambert-St Louis
Sat 9/26
12:10 pm-8:00 am
1 stop12h 50m
Barcelona-El Prat
Wed 10/7
3:15 pm-9:21 pm
1 stop13h 06m
$640
Showing 1-10 of 18 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from St. Louis with our price prediction graph.
STL-S37
STL-BCN
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
STL-S37
STL-BCN
What is the cheapest month to book a flight from St. Louis to Barcelona?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Barcelona (average of $558). Flying from St. Louis to Barcelona in June is currently the most expensive (average of $1,461). 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 St. Louis to Barcelona?
Airfare is below average for this route at the moment.
St. Louis to Barcelona flights typically cost between $750 and $1,056 in October.The cheapest round-trip price found within the last 5 days was $551 on Multiple Airlines (Oct 12-Oct 21).
How far ahead should I book a flight from St. Louis to Barcelona?
To ensure you get the cheapest price possible for a flight from St. Louis to Barcelona, you should look to book at least 9 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing Barcelona
Get insights into the airlines that provide service to Barcelona. 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. Reviews last updated September 11, 2026.
See what other customers who have flown with United Airlines,American Airlines, andAir Canada from St. Louis to Barcelona have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Barcelona flights
Browse other St. Louis and Barcelona flight options. Last updated on September 11, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Popular flight searches
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Top 7 airlines flying from St. Louis to Barcelona
Discover the top 7 airlines that operate flights from St. Louis 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 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$510 | Average$1,038 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$540 | Average$962 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$552 | Average$777 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$624 | Average$1,133 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$629 | Average$981 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$654 | Average$1,049 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$732 | Average$945 | FlexibilityNo cancel fee | On-time77% |