$242+ Cheap flights from St. Louis (STL) 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BCN
Mar 6 — Mar 131
1 adult, Economy
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Find cheap flights from St. Louis to Barcelona with Cheapflights
1. Tell us where you want to go
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Barcelona
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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 February 4, 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 February 4, 2026.
This oojo deal was found by Cheapflights users on 2/4. 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 4/1412:25 pm
STL
- BCN
2 stops18h 50m
British Airways
Tue 4/286:35 pm
BCN
- STL
1 stop31h 55m
British Airways
Deal found 2/4![British Airways logo]()
$481
This oojo deal was found by Cheapflights users on 2/3. 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.
Mon 4/132:33 pm
STL
- BCN
2 stops18h 52m
British Airways
Mon 4/279:20 pm
BCN
- STL
2 stops26h 21m
British Airways
Deal found 2/3![British Airways logo]()
$485
This Delta deal was found by Cheapflights users on 2/2. 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 3/176:59 pm
STL
- BCN
2 stops16h 06m
Delta
Tue 3/2412:15 pm
BCN
- STL
2 stops26h 50m
Delta
Deal found 2/2![Delta logo]()
$504
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Tue 3/174:05 pm
STL
- BCN
2 stops19h 30m
Multiple Airlines
Tue 3/248:30 pm
BCN
- STL
2 stops27h 30m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$514
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 pm
STL
- BCN
2 stops16h 35m
Lufthansa
Fri 4/106:40 am
BCN
- STL
1 stop13h 45m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$516
This oojo deal was found by Cheapflights users on 2/2. 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.
Wed 3/42:00 pm
STL
- BCN
2 stops14h 10m
British Airways
Wed 4/810:45 am
BCN
- STL
1 stop19h 14m
British Airways
Deal found 2/2![British Airways logo]()
$524
This oojo deal was found by Cheapflights users on 2/3. 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 4/144:30 pm
STL
- BCN
2 stops19h 10m
British Airways
Sat 4/257:20 pm
BCN
- STL
1 stop31h 10m
British Airways
Deal found 2/3![British Airways logo]()
$532
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 February 4, 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 February 4, 2026.
This Delta deal was found by Cheapflights users on 2/2. 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 3/176:59 pm
STL
- BCN
2 stops16h 06m
Delta
Tue 3/2412:15 pm
BCN
- STL
2 stops26h 50m
Delta
Deal found 2/2![Delta logo]()
$504
This oojo deal was found by Cheapflights users on 2/3. 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 4/144:30 pm
STL
- BCN
2 stops19h 10m
British Airways
Sat 4/257:20 pm
BCN
- STL
1 stop31h 10m
British Airways
Deal found 2/3![British Airways logo]()
$532
This CheapOair deal was found by Cheapflights users on 2/4. 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.
Tue 4/144:05 pm
STL
- BCN
2 stops32h 55m
Multiple Airlines
Sun 4/266:40 am
BCN
- STL
1 stop13h 45m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$539
This KAYAK deal was found by Cheapflights users on 2/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:59 pm
STL
- BCN
2 stops16h 06m
Scandinavian Airlines
Thu 3/269:45 am
BCN
- STL
1 stop14h 08m
Scandinavian Airlines
Deal found 2/3![Scandinavian Airlines logo]()
$591
This United Airlines deal was found by Cheapflights users on 2/4. 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 3/224:50 pm
STL
- BCN
1 stop21h 00m
United Airlines
Sun 3/2912:15 pm
BCN
- STL
2 stops39h 53m
United Airlines
Deal found 2/4![United Airlines logo]()
$659
This Delta deal was found by Cheapflights users on 2/2. 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 4/1311:43 am
STL
- BCN
1 stop18h 07m
Delta
Mon 4/2711:00 am
BCN
- STL
1 stop28h 30m
Delta
Deal found 2/2![Delta logo]()
$542
This Finnair deal was found by Cheapflights users on 2/1. 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 3/1111:22 am
STL
- BCN
1 stop12h 43m
Multiple Airlines
Wed 3/183:05 pm
BCN
- STL
1 stop25h 27m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$614
This United Airlines deal was found by Cheapflights users on 2/2. 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 5/61:00 pm
STL
- BCN
1 stop12h 00m
United Airlines
Sat 5/166:40 am
BCN
- STL
2 stops20h 25m
United Airlines
Deal found 2/2![United Airlines logo]()
$676
Last-minute flights from St. Louis to BarcelonaDiscover last-minute flight deals from St. Louis to Barcelona. Data last updated February 4, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Barcelona. Data last updated February 4, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 2/2. 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.
Wed 3/42:00 pm
STL
- BCN
2 stops14h 10m
British Airways
Wed 4/810:45 am
BCN
- STL
1 stop19h 14m
British Airways
Deal found 2/2![British Airways logo]()
$524
This Travelocity deal was found by Cheapflights users on 2/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
STL
- BCN
2 stops43h 10m
Iberia
Thu 3/129:35 am
BCN
- STL
1 stop19h 23m
Iberia
Deal found 2/3![Iberia logo]()
$583
This Delta deal was found by Cheapflights users on 2/2. 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 3/176:59 pm
STL
- BCN
2 stops16h 06m
Delta
Tue 3/2412:15 pm
BCN
- STL
2 stops26h 50m
Delta
Deal found 2/2![Delta logo]()
$504
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Tue 3/174:05 pm
STL
- BCN
2 stops19h 30m
Multiple Airlines
Tue 3/248:30 pm
BCN
- STL
2 stops27h 30m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$514
This KAYAK deal was found by Cheapflights users on 2/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:59 pm
STL
- BCN
2 stops16h 06m
Scandinavian Airlines
Thu 3/269:45 am
BCN
- STL
1 stop14h 08m
Scandinavian Airlines
Deal found 2/3![Scandinavian Airlines logo]()
$591
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 pm
STL
- BCN
2 stops16h 35m
Lufthansa
Fri 4/106:40 am
BCN
- STL
1 stop13h 45m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$516
This CheapOair deal was found by Cheapflights users on 2/3. 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.
Tue 3/242:00 pm
STL
- BCN
1 stop12h 00m
British Airways
Fri 4/1010:45 am
BCN
- STL
1 stop29h 09m
British Airways
Deal found 2/3![British Airways logo]()
$570
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 pm
STL
- BCN
2 stops22h 05m
Lufthansa
Sat 4/116:40 pm
BCN
- STL
2 stops25h 45m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$593
This FlightHub deal was found by Cheapflights users on 2/3. 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 3/242:00 pm
STL
- BCN
1 stop12h 00m
British Airways
Sat 4/1110:45 am
BCN
- STL
1 stop15h 45m
British Airways
Deal found 2/3![British Airways logo]()
$601
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 February 4, 2026.
Search for one-way flight options from St. Louis to Barcelona. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
This oojo deal was found by Cheapflights users on 2/3. 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 7/282:11 pm
STL
- BCN
2 stops14h 44m
British Airways
Deal found 2/3![British Airways logo]()
$242
This United Airlines deal was found by Cheapflights users on 2/3. 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 7/2812:10 pm
STL
- BCN
1 stop12h 50m
United Airlines
Deal found 2/3![United Airlines logo]()
$251
This Gotogate deal was found by Cheapflights users on 2/3. 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.
Sat 8/16:55 pm
STL
- BCN
2 stops31h 25m
Air Canada
Deal found 2/3![Air Canada logo]()
$256
This oojo deal was found by Cheapflights users on 2/3. 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.
Sat 8/17:20 pm
STL
- BCN
1 stop31h 50m
British Airways
Deal found 2/3![British Airways logo]()
$262
This Expedia deal was found by Cheapflights users on 2/3. 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 7/315:29 pm
STL
- BCN
2 stops55h 31m
Air Canada
Deal found 2/3![Air Canada logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 4/138:16 pm
STL
- BCN
3 stops34h 04m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 7/313:30 pm
STL
- BCN
1 stop17h 05m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$306
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Tue 7/288:55 am
STL
- BCN
3 stops32h 55m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$338
This Ovago deal was found by Cheapflights users on 2/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:53 am
STL
- BCN
2 stops30h 37m
Aer Lingus
Deal found 2/1![Aer Lingus logo]()
$351
This United Airlines deal was found by Cheapflights users on 2/3. 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 5/197:30 am
STL
- BCN
1 stop18h 50m
United Airlines
Deal found 2/3![United Airlines logo]()
$354
This FlightHub deal was found by Cheapflights users on 2/2. 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 5/197:30 am
STL
- BCN
2 stops17h 30m
Air Canada
Deal found 2/2![Air Canada logo]()
$358
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 February 4, 2026.
Round-trip from | $481 (oojo) |
|---|---|
One-way from | $242 (oojo) |
Popular in | June |
Cheapest in | January |
Average price | $640 |
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 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from St. Louis to Barcelona that are best for you.
Fly from
St. Louis
Fly to
Barcelona
Route
Depart
Return
Price
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Tue 3/17
6:59 pm-5:05 pm
2 stops16h 06m
Barcelona-El Prat
Tue 3/24
12:15 pm-9:05 am
2 stops26h 50m
$504
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Tue 4/14
4:30 pm-6:40 pm
2 stops19h 10m
Barcelona-El Prat
Sat 4/25
7:20 pm-7:30 pm
1 stop31h 10m
$532
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Tue 4/14
4:05 pm-8:00 am
2 stops32h 55m
Barcelona-El Prat
Sun 4/26
6:40 am-1:25 pm
1 stop13h 45m
$539
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Mon 4/13
11:43 am-12:50 pm
1 stop18h 07m
Barcelona-El Prat
Mon 4/27
11:00 am-8:30 am
1 stop28h 30m
$542
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Tue 3/17
6:59 pm-5:05 pm
2 stops16h 06m
Barcelona-El Prat
Thu 3/26
9:45 am-5:53 pm
1 stop14h 08m
$591
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Wed 3/11
11:22 am-6:05 am
1 stop12h 43m
Barcelona-El Prat
Wed 3/18
3:05 pm-10:32 am
1 stop25h 27m
$614
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Sun 3/22
4:50 pm-7:50 pm
1 stop21h 00m
Barcelona-El Prat
Sun 3/29
12:15 pm-9:08 pm
2 stops39h 53m
$659
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Wed 5/6
1:00 pm-8:00 am
1 stop12h 00m
Barcelona-El Prat
Sat 5/16
6:40 am-8:05 pm
2 stops20h 25m
$676
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Sat 8/1
6:55 pm-9:20 am
2 stops31h 25m
$256
St. LouisBarcelona
STL - BCN
STLBCN
Lambert-St Louis
Mon 4/13
8:16 pm-1:20 pm
3 stops34h 04m
$303
Showing 1-10 of 15 results
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
How far ahead should I book a flight from St. Louis to Barcelona?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Barcelona. Price data was last updated on January 30, 2026.
To ensure you get the cheapest price possible for a flight from St. Louis to Barcelona, you should look to book at least 10 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.
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 $487). Flying from St. Louis to Barcelona in June is currently the most expensive (average of $1,084). 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?
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 February 4, 2026.
See what other customers who have flown with United Airlines, American Airlines, and Air 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.
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
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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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for St. Louis to Barcelona
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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.
Search flights from St. Louis to Barcelona by cabin class
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 February 4, 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 February 4, 2026.
Popular flight searches
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Top 8 airlines flying from St. Louis to Barcelona
Discover the top 8 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 2,558,603 searches. Data last updated February 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$510 | Average$891 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$540 | Average$850 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$567 | Average$959 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$585 | Average$984 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$590 | Average$745 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$593 | Average$1,185 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$629 | Average$1,021 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$631 | Average$945 | FlexibilityNo cancel fee | On-time77% |