$297+ Cheap flights from St. Louis (STL) to Spain
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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Aug 16 — Aug 231
Round-trip
1 adult, Economy
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1. Tell us where you want to go
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Cheapest flights from St. Louis to SpainExplore the most affordable flight options available from St. Louis to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
Explore the most affordable flight options available from St. Louis to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/412:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Wed 10/1412:45 pm
MAD
- STL
2 stops30h 28m
United Airlines
Deal found 7/13![United Airlines logo]()
$709
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/77:30 am
STL
- MAD
1 stop18h 30m
United Airlines
Wed 10/2112:45 pm
MAD
- STL
2 stops33h 58m
United Airlines
Deal found 7/13![United Airlines logo]()
$710
This United Airlines deal was found by Cheapflights users on 7/16. 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 10/1812:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Wed 10/2112:45 pm
MAD
- STL
2 stops30h 28m
United Airlines
Deal found 7/16![United Airlines logo]()
$714
This United Airlines deal was found by Cheapflights users on 7/13. 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 9/287:30 am
STL
- MAD
1 stop18h 30m
United Airlines
Fri 10/91:30 pm
MAD
- STL
2 stops29h 45m
United Airlines
Deal found 7/13![United Airlines logo]()
$715
This oojo deal was found by Cheapflights users on 7/17. 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.
Wed 10/219:35 pm
STL
- MAD
1 stop15h 30m
British Airways
Fri 10/301:00 pm
MAD
- STL
1 stop14h 08m
British Airways
Deal found 7/17![British Airways logo]()
$717
This Justfly.com deal was found by Cheapflights users on 7/13. 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.
Sun 10/412:10 pm
STL
- MAD
1 stop11h 40m
Multiple Airlines
Wed 10/145:55 am
MAD
- STL
1 stop14h 30m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$719
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/2112:20 pm
STL
- MAD
1 stop13h 40m
United Airlines
Fri 10/306:00 am
MAD
- STL
1 stop14h 45m
United Airlines
Deal found 7/13![United Airlines logo]()
$720
This Justfly.com deal was found by Cheapflights users on 7/12. 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.
Sun 12/134:05 pm
STL
- VLC
2 stops19h 50m
Multiple Airlines
Fri 12/186:10 am
VLC
- STL
1 stop14h 35m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$741
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Tue 12/16:30 am
STL
- BIO
2 stops21h 20m
United Airlines
Thu 12/312:25 pm
BIO
- STL
2 stops34h 01m
United Airlines
Deal found 7/16![United Airlines logo]()
$744
This Delta deal was found by Cheapflights users on 7/12. 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 12/132:18 pm
STL
- VLC
2 stops14h 37m
Delta
Fri 12/186:00 am
VLC
- STL
2 stops24h 18m
Delta
Deal found 7/12![Delta logo]()
$744
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:04 pm
STL
- BIO
2 stops22h 01m
Lufthansa
Mon 11/166:50 pm
BIO
- STL
2 stops33h 23m
Lufthansa
Deal found 7/15![Lufthansa logo]()
$745
This Gotogate deal was found by Cheapflights users on 7/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:10 pm
STL
- BCN
1 stop12h 50m
Multiple Airlines
Wed 10/286:50 am
BCN
- STL
1 stop13h 55m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$746
Best flights from St. Louis to SpainDiscover carefully curated flight deals from St. Louis to Spain that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
Discover carefully curated flight deals from St. Louis to Spain that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/14. 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 10/77:30 am
STL
- MAD
1 stop18h 30m
United Airlines
Wed 10/2112:45 pm
MAD
- STL
2 stops33h 58m
United Airlines
Deal found 7/14![United Airlines logo]()
$710
This Delta deal was found by Cheapflights users on 7/16. 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 11/119:00 am
STL
- MAD
1 stop17h 55m
Delta
Tue 11/2410:00 am
MAD
- STL
1 stop14h 06m
Delta
Deal found 7/16![Delta logo]()
$730
This Justfly.com deal was found by Cheapflights users on 7/14. 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.
Sun 10/251:08 pm
STL
- BIO
2 stops22h 57m
Lufthansa
Mon 11/166:50 pm
BIO
- STL
2 stops33h 23m
Lufthansa
Deal found 7/14![Lufthansa logo]()
$746
This CheapOair deal was found by Cheapflights users on 7/12. 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 10/712:10 pm
STL
- BCN
1 stop12h 50m
Multiple Airlines
Sat 10/177:00 pm
BCN
- STL
1 stop25h 25m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$901
This Iberia deal was found by Cheapflights users on 7/13. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:12 am
STL
- SVQ
2 stops19h 33m
Iberia
Thu 11/59:45 pm
SVQ
- STL
2 stops28h 45m
Iberia
Deal found 7/13![Iberia logo]()
$907
This British Airways deal was found by Cheapflights users on 7/12. 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.
Sun 11/1511:31 am
STL
- PNA
2 stops26h 54m
British Airways
Thu 11/1910:40 am
PNA
- STL
2 stops15h 49m
British Airways
Deal found 7/12![British Airways logo]()
$1,063
This Finnair deal was found by Cheapflights users on 7/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1111:55 am
STL
- LEI
2 stops22h 10m
Finnair
Thu 1/147:10 am
LEI
- STL
2 stops23h 49m
Finnair
Deal found 7/15![Finnair logo]()
$1,103
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Tue 8/119:44 am
STL
- TFS
2 stops22h 36m
American Airlines
Tue 8/189:50 am
TFS
- STL
2 stops19h 52m
American Airlines
Deal found 7/14![American Airlines logo]()
$1,156
This KLM deal was found by Cheapflights users on 7/14. 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.
Tue 12/2211:51 am
STL
- SVQ
2 stops15h 24m
KLM
Wed 1/611:10 am
SVQ
- STL
2 stops36h 56m
KLM
Deal found 7/14![KLM logo]()
$1,196
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Mon 9/288:30 am
STL
- MAD
1 stop16h 35m
United Airlines
Fri 10/912:45 pm
MAD
- STL
2 stops33h 58m
United Airlines
Deal found 7/16![United Airlines logo]()
$710
This Delta deal was found by Cheapflights users on 7/12. 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 12/132:18 pm
STL
- VLC
2 stops14h 37m
Delta
Fri 12/186:00 am
VLC
- STL
2 stops24h 18m
Delta
Deal found 7/12![Delta logo]()
$744
This oojo deal was found by Cheapflights users on 7/13. 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 10/191:29 pm
STL
- VLC
2 stops14h 31m
Lufthansa
Wed 11/41:00 pm
VLC
- STL
2 stops39h 13m
Lufthansa
Deal found 7/13![Lufthansa logo]()
$786
This United Airlines deal was found by Cheapflights users on 7/16. 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 10/1812:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Wed 10/215:55 am
MAD
- STL
1 stop14h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$724
This Delta deal was found by Cheapflights users on 7/16. 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 11/111:30 pm
STL
- MAD
1 stop13h 25m
Delta
Mon 11/2310:00 am
MAD
- STL
1 stop14h 06m
Delta
Deal found 7/16![Delta logo]()
$780
This United Airlines deal was found by Cheapflights users on 7/14. 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 10/218:00 am
STL
- MAD
2 stops17h 05m
United Airlines
Fri 10/306:00 am
MAD
- STL
1 stop14h 45m
United Airlines
Deal found 7/14![United Airlines logo]()
$724
This Orbitz deal was found by Cheapflights users on 7/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:31 am
STL
- PNA
2 stops26h 54m
Iberia
Sat 10/249:30 am
PNA
- STL
2 stops18h 43m
Iberia
Deal found 7/16![Iberia logo]()
$943
This Finnair deal was found by Cheapflights users on 7/12. 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 10/55:00 am
STL
- EAS
2 stops25h 00m
Multiple Airlines
Sat 10/179:20 am
EAS
- STL
2 stops19h 36m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$954
This oojo deal was found by Cheapflights users on 7/14. 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 8/193:30 pm
STL
- SVQ
1 stop13h 00m
Lufthansa
Wed 9/2312:55 pm
SVQ
- STL
2 stops33h 48m
Lufthansa
Deal found 7/14![Lufthansa logo]()
$891
This United Airlines deal was found by Cheapflights users on 7/14. 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 12/16:30 am
STL
- BIO
2 stops21h 20m
United Airlines
Thu 12/312:25 pm
BIO
- STL
2 stops34h 01m
United Airlines
Deal found 7/14![United Airlines logo]()
$744
This Delta deal was found by Cheapflights users on 7/13. 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 10/196:40 am
STL
- MAD
2 stops20h 15m
Delta
Mon 11/210:00 am
MAD
- STL
2 stops16h 46m
Delta
Deal found 7/13![Delta logo]()
$825
This United deal was found by Cheapflights users on 7/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:59 pm
STL
- BIO
2 stops20h 01m
Multiple Airlines
Mon 9/75:50 pm
BIO
- STL
1 stop26h 35m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$971
This United Airlines deal was found by Cheapflights users on 7/12. 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 11/161:24 pm
STL
- BIO
2 stops14h 26m
United Airlines
Wed 11/1811:35 am
BIO
- STL
2 stops18h 34m
United Airlines
Deal found 7/12![United Airlines logo]()
$748
This Iberia deal was found by Cheapflights users on 7/14. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:00 am
STL
- IBZ
2 stops22h 55m
Iberia
Wed 12/99:05 am
IBZ
- STL
2 stops21h 53m
Iberia
Deal found 7/14![Iberia logo]()
$997
This Justfly.com deal was found by Cheapflights users on 7/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:12 am
STL
- SVQ
2 stops39h 23m
British Airways
Sun 10/181:25 pm
SVQ
- STL
2 stops38h 43m
British Airways
Deal found 7/15![British Airways logo]()
$1,101
This Gotogate deal was found by Cheapflights users on 7/13. 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.
Thu 10/228:55 am
STL
- SVQ
2 stops27h 25m
Multiple Airlines
Thu 11/51:20 pm
SVQ
- STL
1 stop31h 25m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$985
This British Airways deal was found by Cheapflights users on 7/14. 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.
Fri 8/284:54 pm
STL
- IBZ
2 stops18h 56m
British Airways
Fri 9/49:05 am
IBZ
- STL
2 stops17h 22m
British Airways
Deal found 7/14![British Airways logo]()
$1,101
This Cheapflightsfares deal was found by Cheapflights users on 7/12. 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.
Fri 8/283:30 pm
STL
- BCN
1 stop14h 35m
Lufthansa
Sat 9/56:40 am
BCN
- STL
2 stops23h 58m
Lufthansa
Deal found 7/12![Lufthansa logo]()
$1,008
This Orbitz deal was found by Cheapflights users on 7/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:54 am
STL
- LEI
2 stops29h 11m
Iberia
Mon 9/142:15 pm
LEI
- STL
2 stops37h 29m
Iberia
Deal found 7/13![Iberia logo]()
$1,023
This United Airlines deal was found by Cheapflights users on 7/12. 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 10/175:36 pm
STL
- MAD
2 stops32h 24m
United Airlines
Sat 10/2412:45 pm
MAD
- STL
2 stops33h 56m
United Airlines
Deal found 7/12![United Airlines logo]()
$770
This Condor deal was found by Cheapflights users on 7/16. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:25 am
STL
- IBZ
2 stops20h 15m
Multiple Airlines
Thu 8/208:35 am
IBZ
- STL
2 stops18h 10m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$993
Last-minute flights from St. Louis to SpainDiscover last-minute flight deals from St. Louis to Spain. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Spain. Data last updated July 17, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 7/12. 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 8/114:54 pm
STL
- BCN
1 stop11h 01m
Finnair
Tue 8/1810:30 am
BCN
- STL
1 stop20h 44m
Finnair
Deal found 7/12![Finnair logo]()
$865
This Justfly.com deal was found by Cheapflights users on 7/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:10 pm
STL
- MAD
1 stop11h 40m
Air Canada
Fri 9/181:30 pm
MAD
- STL
2 stops29h 33m
Air Canada
Deal found 7/15![Air Canada logo]()
$779
This Cheapflightsfares deal was found by Cheapflights users on 7/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:54 pm
STL
- MAD
2 stops15h 46m
Lufthansa
Fri 9/186:00 am
MAD
- STL
2 stops22h 36m
Lufthansa
Deal found 7/15![Lufthansa logo]()
$791
This Trip.com deal was found by Cheapflights users on 7/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:10 pm
STL
- BCN
1 stop12h 50m
Air Canada
Tue 9/812:00 pm
BCN
- STL
1 stop33h 00m
Air Canada
Deal found 7/16![Air Canada logo]()
$827
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/307:00 am
STL
- MAD
1 stop19h 00m
United Airlines
Wed 9/912:45 pm
MAD
- STL
2 stops30h 12m
United Airlines
Deal found 7/13![United Airlines logo]()
$867
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/307:00 am
STL
- MAD
1 stop19h 00m
United Airlines
Thu 9/101:30 pm
MAD
- STL
2 stops29h 32m
United Airlines
Deal found 7/13![United Airlines logo]()
$872
This Air Canada deal was found by Cheapflights users on 7/13. 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.
Sun 8/3012:10 pm
STL
- MAD
2 stops37h 40m
Air Canada
Fri 9/1112:45 pm
MAD
- STL
2 stops30h 18m
Air Canada
Deal found 7/13![Air Canada logo]()
$874
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/307:00 am
STL
- MAD
1 stop19h 00m
United Airlines
Tue 9/85:55 am
MAD
- STL
1 stop14h 30m
United Airlines
Deal found 7/13![United Airlines logo]()
$877
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/3112:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Wed 9/912:45 pm
MAD
- STL
2 stops30h 12m
United Airlines
Deal found 7/13![United Airlines logo]()
$866
This Air Canada deal was found by Cheapflights users on 7/13. 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.
Mon 8/317:25 am
STL
- MAD
2 stops16h 25m
Air Canada
Wed 9/912:45 pm
MAD
- STL
2 stops33h 53m
Air Canada
Deal found 7/13![Air Canada logo]()
$870
This Air Canada deal was found by Cheapflights users on 7/13. 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.
Mon 8/3112:10 pm
STL
- MAD
1 stop11h 40m
Air Canada
Tue 9/81:30 pm
MAD
- STL
2 stops31h 45m
Air Canada
Deal found 7/13![Air Canada logo]()
$871
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/3112:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Tue 9/85:55 am
MAD
- STL
1 stop14h 30m
United Airlines
Deal found 7/13![United Airlines logo]()
$876
One-way flights from St. Louis to SpainSearch for one-way flight options from St. Louis to Spain. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
Search for one-way flight options from St. Louis to Spain. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:34 pm
STL
- IBZ
3 stops43h 36m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:35 am
STL
- BCN
3 stops51h 30m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:57 pm
STL
- IBZ
3 stops47h 53m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:35 am
STL
- BCN
3 stops27h 05m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/314:57 pm
STL
- BCN
3 stops49h 23m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$358
This Cheapflightsfares deal was found by Cheapflights users on 7/12. 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.
Wed 10/2812:47 pm
STL
- BCN
1 stop14h 03m
Finnair
Deal found 7/12![Finnair logo]()
$359
This British Airways deal was found by Cheapflights users on 7/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:10 pm
STL
- BCN
2 stops17h 15m
British Airways
Deal found 7/16![British Airways logo]()
$360
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/284:13 pm
STL
- BCN
2 stops15h 47m
Delta
Deal found 7/15![Delta logo]()
$366
This Priceline deal was found by Cheapflights users on 7/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:10 pm
STL
- BCN
1 stop32h 00m
British Airways
Deal found 7/17![British Airways logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 8/317:58 pm
STL
- BCN
3 stops42h 37m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 7/13. 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.
Sun 9/1310:35 am
STL
- BCN
3 stops45h 10m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$399
This Mytrip deal was found by Cheapflights users on 7/13. 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.
Wed 8/268:55 am
STL
- BCN
3 stops18h 10m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$415
Find flight deals from St. Louis to Spain
Keep the following information in mind while searching for St. Louis to Spain flight deals. Data was last updated July 17, 2026.
Round-trip from | $709 (United Airlines) |
|---|---|
One-way from | $297 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,082 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Spain 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 July 17, 2026.
Use the filters below to find and compare flights from St. Louis to Spain that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/7
7:30 am-9:00 am
1 stop18h 30m
Madrid Barajas
Wed 10/21
12:45 pm-3:43 pm
2 stops33h 58m
$710
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 9/28
8:30 am-8:05 am
1 stop16h 35m
Madrid Barajas
Fri 10/9
12:45 pm-3:43 pm
2 stops33h 58m
$710
Quickest round-trip
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 10/18
12:10 pm-6:50 am
1 stop11h 40m
Madrid Barajas
Wed 10/21
5:55 am-1:25 pm
1 stop14h 30m
$724
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/21
8:00 am-8:05 am
2 stops17h 05m
Madrid Barajas
Fri 10/30
6:00 am-2:45 pm
1 stop14h 45m
$724
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 11/11
9:00 am-9:55 am
1 stop17h 55m
Madrid Barajas
Tue 11/24
10:00 am-5:06 pm
1 stop14h 06m
$730
St. LouisValencia
STL - VLC
STLVLC
Lambert-St Louis
Sun 12/13
2:18 pm-11:55 am
2 stops14h 37m
Valencia
Fri 12/18
6:00 am-11:18 pm
2 stops24h 18m
$744
St. LouisBilbao
STL - BIO
STLBIO
Lambert-St Louis
Tue 12/1
6:30 am-10:50 am
2 stops21h 20m
Bilbao
Thu 12/3
12:25 pm-3:26 pm
2 stops34h 01m
$744
St. LouisBilbao
STL - BIO
STLBIO
Lambert-St Louis
Sun 10/25
1:08 pm-6:05 pm
2 stops22h 57m
Bilbao
Mon 11/16
6:50 pm-9:13 pm
2 stops33h 23m
$746
St. LouisBilbao
STL - BIO
STLBIO
Lambert-St Louis
Mon 11/16
1:24 pm-10:50 am
2 stops14h 26m
Bilbao
Wed 11/18
11:35 am-11:09 pm
2 stops18h 34m
$748
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sat 10/17
5:36 pm-9:00 am
2 stops32h 24m
Madrid Barajas
Sat 10/24
12:45 pm-3:41 pm
2 stops33h 56m
$770
Showing 1-10 of 53 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Spain
Have a flexible travel schedule? Discover the best time to fly to Spain from St. Louis with our price prediction graph.
STL-IBZ
STL-BCN
STL-MAD
STL-BIO
STL-SVQ
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 Spain
STL-ES0
STL-IBZ
STL-BCN
STL-MAD
STL-BIO
What is the cheapest month to book a flight from St. Louis to Spain?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Spain (average of $414). Flying from St. Louis to Spain in June is currently the most expensive (average of $927). 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 far ahead should I book a flight from St. Louis to Spain?
To ensure you get the cheapest price possible for a flight from St. Louis to Spain, you should look to book at least 76 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 Spain
Get insights into the airlines that provide service to Spain. 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 Spain. Reviews last updated July 17, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andIberia from St. Louis to Spain by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Overall
7.4
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Spain. 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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Alternative routes for St. Louis to Spain
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Complete your trip
Complete your trip to Spain by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Spain, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Spain flights
Browse other St. Louis and Spain flight options. Last updated on July 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Spain flights
Consider these flights traveling from St. Louis to Spain.
Fly to Spain regions
Consider these flights traveling to Spain regions.
Top 7 airlines flying from St. Louis to Spain
Discover the top 7 airlines that operate flights from St. Louis to Spain. 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 July 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$480 | Average$1,163 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$489 | Average$783 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$516 | Average$837 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$523 | Average$814 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$560 | Average$1,097 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$560 | Average$1,098 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$581 | Average$878 | FlexibilityNo cancel fee | On-time71% |