$381+ Cheap flights from St. Louis (STL) to Brussels
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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
May 22 — May 291
Round-trip
1 adult, Economy
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Cheapest flights from St. Louis to BrusselsExplore the most affordable flight options available from St. Louis to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
Explore the most affordable flight options available from St. Louis to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
This Justfly.com deal was found by Cheapflights users on 4/21. 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 8/311:30 pm
STL
- BRU
2 stops18h 05m
Scandinavian Airlines
Thu 9/1010:20 am
BRU
- STL
2 stops20h 17m
Scandinavian Airlines
Deal found 4/21![Scandinavian Airlines logo]()
$788
This Expedia deal was found by Cheapflights users on 4/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:40 pm
STL
- BRU
1 stop15h 20m
British Airways
Wed 12/911:50 am
BRU
- STL
2 stops19h 08m
British Airways
Deal found 4/17![British Airways logo]()
$818
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:43 pm
STL
- BRU
2 stops13h 27m
American Airlines
Wed 12/911:50 am
BRU
- STL
2 stops19h 09m
American Airlines
Deal found 4/17![American Airlines logo]()
$820
This Gotogate deal was found by Cheapflights users on 4/17. 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.
Sun 8/2312:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Wed 12/97:00 am
BRU
- STL
1 stop13h 55m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$831
This Gotogate deal was found by Cheapflights users on 4/17. 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.
Mon 8/2412:10 pm
STL
- BRU
2 stops18h 05m
Multiple Airlines
Wed 12/97:00 am
BRU
- STL
1 stop13h 55m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$838
This KAYAK deal was found by Cheapflights users on 4/19. 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.
Wed 9/309:35 pm
STL
- BRU
1 stop15h 50m
British Airways
Mon 10/58:50 pm
BRU
- STL
1 stop29h 40m
British Airways
Deal found 4/19![British Airways logo]()
$851
This United Airlines deal was found by Cheapflights users on 4/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:18 pm
STL
- BRU
1 stop12h 42m
United Airlines
Wed 12/97:00 am
BRU
- STL
1 stop13h 55m
United Airlines
Deal found 4/17![United Airlines logo]()
$859
This Priceline deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:40 pm
STL
- BRU
1 stop15h 20m
Multiple Airlines
Sat 9/128:05 pm
BRU
- STL
2 stops30h 41m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$887
This Mytrip deal was found by Cheapflights users on 4/19. 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 6/82:15 pm
STL
- CRL
2 stops19h 10m
Multiple Airlines
Mon 6/229:40 pm
CRL
- STL
3 stops29h 27m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,164
This Mytrip deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:05 am
STL
- CRL
3 stops31h 25m
Multiple Airlines
Mon 5/259:05 pm
CRL
- STL
3 stops30h 04m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$1,638
This Mytrip deal was found by Cheapflights users on 4/21. 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 6/242:15 pm
STL
- CRL
2 stops18h 30m
Multiple Airlines
Sun 7/58:50 am
CRL
- STL
3 stops42h 17m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,676
This Mytrip deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:05 pm
STL
- CRL
3 stops22h 55m
Multiple Airlines
Wed 5/207:45 am
CRL
- STL
2 stops19h 24m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$1,790
Best flights from St. Louis to BrusselsDiscover carefully curated flight deals from St. Louis to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
Discover carefully curated flight deals from St. Louis to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
This Finnair deal was found by Cheapflights users on 4/20. 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 9/307:44 am
STL
- BRU
2 stops27h 36m
Multiple Airlines
Mon 10/57:05 pm
BRU
- STL
2 stops31h 41m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$921
This KLM deal was found by Cheapflights users on 4/20. 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.
Thu 9/1711:51 am
STL
- BRU
1 stop12h 49m
KLM
Sun 9/279:45 am
BRU
- STL
1 stop13h 12m
KLM
Deal found 4/20![KLM logo]()
$1,037
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:05 pm
STL
- BRU
2 stops17h 10m
United Airlines
Tue 6/99:40 am
BRU
- STL
2 stops31h 54m
United Airlines
Deal found 4/18![United Airlines logo]()
$1,143
This Justfly.com deal was found by Cheapflights users on 4/21. 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 6/249:23 am
STL
- BRU
2 stops15h 27m
Air Canada
Sun 7/59:40 am
BRU
- STL
2 stops15h 33m
Air Canada
Deal found 4/21![Air Canada logo]()
$1,599
This British Airways deal was found by Cheapflights users on 4/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/201:29 pm
STL
- BRU
2 stops18h 36m
British Airways
Sun 5/2410:40 am
BRU
- STL
2 stops16h 50m
British Airways
Deal found 4/17![British Airways logo]()
$1,851
This Mytrip deal was found by Cheapflights users on 4/19. 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 6/82:15 pm
STL
- CRL
2 stops19h 10m
Multiple Airlines
Mon 6/229:40 pm
CRL
- STL
3 stops29h 27m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,164
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:13 pm
STL
- BRU
1 stop12h 47m
United Airlines
Mon 5/259:55 am
BRU
- STL
1 stop17h 30m
United Airlines
Deal found 4/18![United Airlines logo]()
$1,166
This United Airlines deal was found by Cheapflights users on 4/20. 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 6/52:15 pm
STL
- BRU
2 stops35h 40m
United Airlines
Fri 6/129:45 am
BRU
- STL
2 stops32h 56m
United Airlines
Deal found 4/20![United Airlines logo]()
$1,218
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:05 pm
STL
- BRU
1 stop11h 05m
United Airlines
Mon 6/229:40 am
BRU
- STL
1 stop17h 45m
United Airlines
Deal found 4/18![United Airlines logo]()
$1,229
This Orbitz deal was found by Cheapflights users on 4/21. 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.
Wed 6/242:15 pm
STL
- BRU
1 stop10h 35m
Multiple Airlines
Sun 7/59:55 am
BRU
- STL
2 stops35h 07m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,439
This United Airlines deal was found by Cheapflights users on 4/21. 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 6/241:20 pm
STL
- BRU
1 stop10h 50m
United Airlines
Sun 7/510:15 am
BRU
- STL
1 stop12h 31m
United Airlines
Deal found 4/21![United Airlines logo]()
$1,448
This Mytrip deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:05 am
STL
- CRL
3 stops31h 25m
Multiple Airlines
Mon 5/259:05 pm
CRL
- STL
3 stops30h 04m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$1,638
This Mytrip deal was found by Cheapflights users on 4/21. 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 6/242:15 pm
STL
- CRL
2 stops18h 30m
Multiple Airlines
Sun 7/58:50 am
CRL
- STL
3 stops42h 17m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,676
This Mytrip deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:05 pm
STL
- CRL
3 stops22h 55m
Multiple Airlines
Wed 5/207:45 am
CRL
- STL
2 stops19h 24m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$1,790
This Mytrip deal was found by Cheapflights users on 4/20. 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.
Thu 6/41:05 pm
STL
- CRL
3 stops26h 15m
Multiple Airlines
Thu 6/117:45 am
CRL
- STL
3 stops35h 21m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$1,912
This Mytrip deal was found by Cheapflights users on 4/19. 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 5/191:05 pm
STL
- CRL
2 stops18h 30m
Multiple Airlines
Tue 5/269:00 am
CRL
- STL
2 stops18h 09m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$2,019
This Mytrip deal was found by Cheapflights users on 4/20. 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.
Thu 9/1712:10 pm
STL
- CRL
3 stops18h 35m
Multiple Airlines
Sun 9/279:25 am
CRL
- STL
2 stops17h 35m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$2,052
This Mytrip deal was found by Cheapflights users on 4/22. 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 5/41:05 pm
STL
- CRL
2 stops15h 50m
Multiple Airlines
Tue 5/127:55 am
CRL
- STL
3 stops19h 14m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$2,170
Last-minute flights from St. Louis to BrusselsDiscover last-minute flight deals from St. Louis to Brussels. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Brussels. Data last updated April 22, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 4/21. 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 4/269:10 am
STL
- BRU
2 stops15h 00m
Air Canada
Fri 5/89:55 am
BRU
- STL
2 stops37h 44m
Air Canada
Deal found 4/21![Air Canada logo]()
$945
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/261:10 pm
STL
- BRU
1 stop12h 50m
United Airlines
Thu 5/79:55 am
BRU
- STL
1 stop17h 30m
United Airlines
Deal found 4/21![United Airlines logo]()
$954
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:15 pm
STL
- BRU
1 stop10h 45m
United Airlines
Thu 5/79:55 am
BRU
- STL
2 stops31h 49m
United Airlines
Deal found 4/21![United Airlines logo]()
$941
This Air Canada deal was found by Cheapflights users on 4/21. 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 4/274:05 pm
STL
- BRU
2 stops33h 50m
Air Canada
Wed 5/69:55 am
BRU
- STL
2 stops35h 37m
Air Canada
Deal found 4/21![Air Canada logo]()
$942
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:15 pm
STL
- BRU
2 stops15h 00m
United Airlines
Wed 5/69:55 am
BRU
- STL
1 stop17h 30m
United Airlines
Deal found 4/21![United Airlines logo]()
$951
This Air Canada deal was found by Cheapflights users on 4/21. 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 4/274:05 pm
STL
- BRU
2 stops33h 50m
Air Canada
Tue 5/59:55 am
BRU
- STL
1 stop17h 30m
Air Canada
Deal found 4/21![Air Canada logo]()
$955
This Justfly.com deal was found by Cheapflights users on 4/21. 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 4/281:02 pm
STL
- BRU
2 stops22h 28m
Scandinavian Airlines
Fri 5/88:30 pm
BRU
- STL
2 stops32h 08m
Scandinavian Airlines
Deal found 4/21![Scandinavian Airlines logo]()
$952
This Air Canada deal was found by Cheapflights users on 4/21. 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.
Wed 4/296:30 am
STL
- BRU
2 stops18h 20m
Air Canada
Wed 5/69:55 am
BRU
- STL
2 stops35h 37m
Air Canada
Deal found 4/21![Air Canada logo]()
$949
This Mytrip deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:05 pm
STL
- CRL
3 stops22h 55m
Multiple Airlines
Wed 5/207:45 am
CRL
- STL
2 stops19h 24m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$1,790
This Booking.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:05 am
STL
- BRU
2 stops17h 05m
Air Canada
Tue 5/269:55 am
BRU
- STL
2 stops35h 28m
Air Canada
Deal found 4/19![Air Canada logo]()
$904
This Mytrip deal was found by Cheapflights users on 4/19. 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 5/191:05 pm
STL
- CRL
2 stops18h 30m
Multiple Airlines
Tue 5/269:00 am
CRL
- STL
2 stops18h 09m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$2,019
This Mytrip deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:05 am
STL
- CRL
3 stops31h 25m
Multiple Airlines
Mon 5/259:05 pm
CRL
- STL
3 stops30h 04m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$1,638
One-way flights from St. Louis to BrusselsSearch for one-way flight options from St. Louis to Brussels. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
Search for one-way flight options from St. Louis to Brussels. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:40 pm
STL
- BRU
1 stop15h 20m
British Airways
Deal found 4/17![British Airways logo]()
$381
This oojo deal was found by Cheapflights users on 4/19. 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 8/39:39 am
STL
- BRU
2 stops21h 46m
British Airways
Deal found 4/19![British Airways logo]()
$383
This American Airlines deal was found by Cheapflights users on 4/20. 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.
Mon 8/39:41 am
STL
- BRU
2 stops17h 24m
American Airlines
Deal found 4/20![American Airlines logo]()
$390
This BusinessClass deal was found by Cheapflights users on 4/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:27 pm
STL
- BRU
2 stops14h 13m
Aer Lingus
Deal found 4/17![Aer Lingus logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 6/511:24 am
STL
- CRL
3 stops39h 51m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 6/64:19 pm
STL
- BRU
3 stops58h 06m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$475
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 6/64:19 pm
STL
- CRL
3 stops45h 56m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 6/511:24 am
STL
- BRU
3 stops38h 11m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Sun 8/236:33 pm
STL
- CRL
3 stops36h 37m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$492
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 6/15:33 pm
STL
- CRL
3 stops44h 42m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$503
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 5/316:45 am
STL
- BRU
3 stops43h 25m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$504
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 6/43:30 pm
STL
- BRU
3 stops58h 25m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$507
Find flight deals from St. Louis to Brussels
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Brussels (BR1). 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 April 22, 2026.
Round-trip from | $788 (Justfly.com) |
|---|---|
One-way from | $381 (Cheapflightsfares) |
Popular in | December |
Cheapest in | February |
Average price | $931 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Brussels 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 April 22, 2026.
Use the filters below to find and compare flights from St. Louis to Brussels that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 9/30
7:44 am-6:20 pm
2 stops27h 36m
Brussels Bruxelles-National
Mon 10/5
7:05 pm-7:46 pm
2 stops31h 41m
$921
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Thu 9/17
11:51 am-7:40 am
1 stop12h 49m
Brussels Bruxelles-National
Sun 9/27
9:45 am-3:57 pm
1 stop13h 12m
$1,037
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Tue 6/2
1:05 pm-1:15 pm
2 stops17h 10m
Brussels Bruxelles-National
Tue 6/9
9:40 am-10:34 am
2 stops31h 54m
$1,143
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Mon 6/8
2:15 pm-4:25 pm
2 stops19h 10m
Charleroi Brussels
Mon 6/22
9:40 pm-8:07 pm
3 stops29h 27m
$1,164
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Thu 5/21
1:13 pm-9:00 am
1 stop12h 47m
Brussels Bruxelles-National
Mon 5/25
9:55 am-8:25 pm
1 stop17h 30m
$1,166
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Fri 6/5
2:15 pm-8:55 am
2 stops35h 40m
Brussels Bruxelles-National
Fri 6/12
9:45 am-11:41 am
2 stops32h 56m
$1,218
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 6/10
1:05 pm-7:10 am
1 stop11h 05m
Brussels Bruxelles-National
Mon 6/22
9:40 am-8:25 pm
1 stop17h 45m
$1,229
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 6/24
2:15 pm-7:50 am
1 stop10h 35m
Brussels Bruxelles-National
Sun 7/5
9:55 am-2:02 pm
2 stops35h 07m
$1,439
Quickest round-trip
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 6/24
1:20 pm-7:10 am
1 stop10h 50m
Brussels Bruxelles-National
Sun 7/5
10:15 am-3:46 pm
1 stop12h 31m
$1,448
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 6/24
9:23 am-7:50 am
2 stops15h 27m
Brussels Bruxelles-National
Sun 7/5
9:40 am-6:13 pm
2 stops15h 33m
$1,599
Showing 1-10 of 38 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Brussels
Have a flexible travel schedule? Discover the best time to fly to Brussels from St. Louis with our price prediction graph.
STL-BR1
STL-BRU
STL-CRL
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 Brussels
STL-BR1
STL-BRU
STL-CRL
What is the cheapest month to book a flight from St. Louis to Brussels?
Currently, April is the cheapest month in which you can book a flight from St. Louis to Brussels (average of $414). Flying from St. Louis to Brussels in June is currently the most expensive (average of $1,132). 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 Brussels?
Reviews of airlines servicing Brussels
Get insights into the airlines that provide service to Brussels. 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 Brussels. Reviews last updated April 22, 2026.
Read through reviews of airlines operating flights from St. Louis to Brussels, such as United Airlines and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Entertainment
7.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Entertainment
7.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Brussels. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
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Popular flights
Alternative routes for St. Louis to Brussels
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Complete your trip
Complete your trip to Brussels by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Brussels by cabin class
Find flights from St. Louis to Brussels, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Brussels flights
Browse other St. Louis and Brussels flight options. Last updated on April 22, 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 April 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from St. Louis to Brussels
Discover the top 2 airlines that operate flights from St. Louis to Brussels. 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 April 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$441 | Average$2,200 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$606 | Average$780 | FlexibilityNo cancel fee | On-time69% |