$322+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
avr. 9 — avr. 161
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 mars 10, 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 mars 10, 2026.
This Flighttix deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/2210:00 am
STL
- BRU
2 stops14h 10m
Air Canada
mer. 4/299:55 am
BRU
- STL
2 stops18h 18m
Air Canada
Deal found 3/8![Air Canada logo]()
$748
This Gotogate deal was found by Cheapflights users on 3/5. 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.
mar. 4/144:05 pm
STL
- BRU
2 stops14h 10m
Multiple Airlines
mar. 4/217:00 am
BRU
- STL
2 stops15h 25m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$752
This FlightHub deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/2811:42 am
STL
- BRU
2 stops38h 58m
Scandinavian Airlines
jeu. 5/75:45 am
BRU
- STL
2 stops22h 44m
Scandinavian Airlines
Deal found 3/6![Scandinavian Airlines logo]()
$753
This Flighttix deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/2210:00 am
STL
- BRU
2 stops14h 50m
Multiple Airlines
mer. 4/2912:00 pm
BRU
- STL
1 stop14h 22m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$754
This Flighttix deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/311:42 am
STL
- BRU
2 stops38h 58m
Scandinavian Airlines
mar. 5/1210:20 am
BRU
- STL
2 stops20h 39m
Scandinavian Airlines
Deal found 3/9![Scandinavian Airlines logo]()
$756
This Flighttix deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/207:45 am
STL
- BRU
2 stops16h 25m
Multiple Airlines
lun. 4/275:30 pm
BRU
- STL
2 stops37h 27m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$765
This Flighttix deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/2211:37 am
STL
- BRU
1 stop13h 08m
Lufthansa
mer. 4/2910:15 am
BRU
- STL
1 stop17h 58m
Lufthansa
Deal found 3/8![Lufthansa logo]()
$767
This KLM deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/36:50 pm
STL
- BRU
1 stop29h 50m
KLM
mar. 5/129:45 am
BRU
- STL
1 stop21h 14m
KLM
Deal found 3/9![KLM logo]()
$769
This United Airlines deal was found by Cheapflights users on 3/5. 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.
mar. 4/1411:15 am
STL
- BRU
2 stops19h 00m
United Airlines
mar. 4/2111:10 am
BRU
- STL
1 stop12h 33m
United Airlines
Deal found 3/5![United Airlines logo]()
$773
This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/31:00 pm
STL
- BRU
2 stops36h 55m
Air Canada
mar. 5/129:55 am
BRU
- STL
1 stop17h 30m
Air Canada
Deal found 3/9![Air Canada logo]()
$774
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 4/266:00 am
STL
- BRU
1 stop18h 40m
Delta
mar. 5/59:45 am
BRU
- STL
1 stop18h 34m
Delta
Deal found 3/6![Delta logo]()
$777
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 4/255:00 pm
STL
- BRU
1 stop31h 40m
Delta
mar. 5/59:45 am
BRU
- STL
1 stop14h 59m
Delta
Deal found 3/6![Delta logo]()
$783
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 mars 10, 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 mars 10, 2026.
This KLM deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/36:50 pm
STL
- BRU
1 stop29h 50m
KLM
mar. 5/129:45 am
BRU
- STL
1 stop21h 14m
KLM
Deal found 3/9![KLM logo]()
$769
This Finnair deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 4/1912:27 pm
STL
- BRU
2 stops27h 08m
Multiple Airlines
dim. 4/2611:20 am
BRU
- STL
2 stops19h 26m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$847
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 4/2410:00 am
STL
- BRU
1 stop16h 00m
United Airlines
ven. 5/19:55 am
BRU
- STL
1 stop17h 30m
United Airlines
Deal found 3/10![United Airlines logo]()
$870
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/63:15 pm
STL
- BRU
1 stop10h 45m
United Airlines
lun. 4/139:40 am
BRU
- STL
1 stop12h 45m
United Airlines
Deal found 3/8![United Airlines logo]()
$1,005
This United Airlines deal was found by Cheapflights users on 3/5. 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.
lun. 7/612:10 pm
STL
- BRU
1 stop12h 00m
United Airlines
mar. 7/218:30 am
BRU
- STL
1 stop11h 55m
United Airlines
Deal found 3/5![United Airlines logo]()
$1,085
This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/31:00 pm
STL
- CRL
2 stops24h 40m
Multiple Airlines
mar. 5/129:00 am
CRL
- STL
2 stops18h 04m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,207
This KLM deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/112:04 pm
STL
- BRU
1 stop12h 36m
KLM
sam. 4/189:45 am
BRU
- STL
1 stop16h 26m
KLM
Deal found 3/9![KLM logo]()
$1,234
This Finnair deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/16:00 am
STL
- BRU
2 stops29h 20m
Multiple Airlines
sam. 4/1811:20 am
BRU
- STL
2 stops17h 57m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,231
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/110:00 am
STL
- BRU
1 stop16h 00m
United Airlines
sam. 4/1810:15 am
BRU
- STL
1 stop16h 16m
United Airlines
Deal found 3/8![United Airlines logo]()
$1,189
This Mytrip deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/214:05 pm
STL
- CRL
3 stops22h 10m
Multiple Airlines
mar. 4/289:30 am
CRL
- STL
2 stops34h 55m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,402
This Mytrip deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/78:55 am
STL
- CRL
3 stops20h 50m
Multiple Airlines
dim. 7/129:40 pm
CRL
- STL
3 stops47h 22m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$1,475
This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 6/217:05 am
STL
- CRL
3 stops32h 25m
Multiple Airlines
dim. 7/129:40 pm
CRL
- STL
3 stops47h 22m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,515
This Mytrip deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 7/1212:10 pm
STL
- CRL
2 stops26h 15m
Multiple Airlines
lun. 7/207:10 am
CRL
- STL
2 stops19h 52m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,697
This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/234:05 pm
STL
- CRL
3 stops22h 25m
Multiple Airlines
jeu. 4/307:00 pm
CRL
- STL
2 stops25h 25m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,744
This Mytrip deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/204:05 pm
STL
- CRL
3 stops21h 30m
Multiple Airlines
lun. 4/274:10 pm
CRL
- STL
3 stops30h 15m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$2,393
Last-minute flights from St. Louis to BrusselsDiscover last-minute flight deals from St. Louis to Brussels. Data last updated mars 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Brussels. Data last updated mars 10, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 3/5. 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.
mar. 4/144:05 pm
STL
- BRU
2 stops14h 10m
Multiple Airlines
mar. 4/217:00 am
BRU
- STL
2 stops15h 25m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$752
This United Airlines deal was found by Cheapflights users on 3/5. 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.
mar. 4/1411:15 am
STL
- BRU
2 stops19h 00m
United Airlines
mar. 4/2111:10 am
BRU
- STL
1 stop12h 33m
United Airlines
Deal found 3/5![United Airlines logo]()
$773
This Flighttix deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/207:45 am
STL
- BRU
2 stops16h 25m
Multiple Airlines
lun. 4/275:30 pm
BRU
- STL
2 stops37h 27m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$765
This Mytrip deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/214:05 pm
STL
- CRL
3 stops22h 10m
Multiple Airlines
mar. 4/289:30 am
CRL
- STL
2 stops34h 55m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,402
This Flighttix deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/2210:00 am
STL
- BRU
2 stops14h 10m
Air Canada
mer. 4/299:55 am
BRU
- STL
2 stops18h 18m
Air Canada
Deal found 3/8![Air Canada logo]()
$748
This Flighttix deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/2210:00 am
STL
- BRU
2 stops14h 50m
Multiple Airlines
mer. 4/2912:00 pm
BRU
- STL
1 stop14h 22m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$754
This Flighttix deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/2211:37 am
STL
- BRU
1 stop13h 08m
Lufthansa
mer. 4/2910:15 am
BRU
- STL
1 stop17h 58m
Lufthansa
Deal found 3/8![Lufthansa logo]()
$767
This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/234:05 pm
STL
- CRL
3 stops22h 25m
Multiple Airlines
jeu. 4/307:00 pm
CRL
- STL
2 stops25h 25m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,744
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 4/255:00 pm
STL
- BRU
1 stop31h 40m
Delta
mar. 5/59:45 am
BRU
- STL
1 stop14h 59m
Delta
Deal found 3/6![Delta logo]()
$783
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 4/255:00 pm
STL
- BRU
1 stop31h 40m
Delta
mer. 5/66:20 am
BRU
- STL
2 stops15h 09m
Delta
Deal found 3/6![Delta logo]()
$791
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 4/266:00 am
STL
- BRU
1 stop18h 40m
Delta
mar. 5/59:45 am
BRU
- STL
1 stop18h 34m
Delta
Deal found 3/6![Delta logo]()
$777
This FlightHub deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/2811:42 am
STL
- BRU
2 stops38h 58m
Scandinavian Airlines
jeu. 5/75:45 am
BRU
- STL
2 stops22h 44m
Scandinavian Airlines
Deal found 3/6![Scandinavian Airlines logo]()
$753
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 mars 10, 2026.
Search for one-way flight options from St. Louis to Brussels. Find affordable one-way fares based on user searches. Data last updated mars 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
lun. 3/304:51 pm
STL
- BRU
3 stops57h 44m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
lun. 4/138:19 pm
STL
- BRU
3 stops57h 36m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
lun. 3/307:47 am
STL
- CRL
3 stops41h 38m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
lun. 5/188:13 pm
STL
- BRU
3 stops33h 42m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/168:10 pm
STL
- CRL
3 stops54h 10m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/284:59 pm
STL
- BRU
3 stops47h 01m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
dim. 3/224:51 pm
STL
- BRU
3 stops59h 44m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$423
This Trip.com deal was found by Cheapflights users on 3/5. 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.
lun. 4/1312:27 pm
STL
- BRU
2 stops38h 13m
Aer Lingus
Deal found 3/5![Aer Lingus logo]()
$441
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/188:12 pm
STL
- CRL
3 stops39h 23m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$448
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
lun. 4/137:00 am
STL
- CRL
3 stops55h 15m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
mar. 5/195:33 pm
STL
- BRU
3 stops57h 07m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$457
This oojo deal was found by Cheapflights users on 3/5. 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.
sam. 3/216:14 am
STL
- BRU
2 stops21h 21m
Aer Lingus
Deal found 3/5![Aer Lingus logo]()
$458
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 mars 10, 2026.
Round-trip from | $748 (Flighttix) |
|---|---|
One-way from | $322 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $685 |
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 mars 10, 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
dim. 5/3
6:50 pm-7:40 am
1 stop29h 50m
Brussels Bruxelles-National
mar. 5/12
9:45 am-11:59 pm
1 stop21h 14m
$769
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
dim. 4/19
12:27 pm-10:35 pm
2 stops27h 08m
Brussels Bruxelles-National
dim. 4/26
11:20 am-11:46 pm
2 stops19h 26m
$847
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
ven. 4/24
10:00 am-9:00 am
1 stop16h 00m
Brussels Bruxelles-National
ven. 5/1
9:55 am-8:25 pm
1 stop17h 30m
$870
Quickest round-trip
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
lun. 4/6
3:15 pm-9:00 am
1 stop10h 45m
Brussels Bruxelles-National
lun. 4/13
9:40 am-3:25 pm
1 stop12h 45m
$1,005
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
lun. 7/6
12:10 pm-7:10 am
1 stop12h 00m
Brussels Bruxelles-National
mar. 7/21
8:30 am-1:25 pm
1 stop11h 55m
$1,085
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
mer. 4/1
10:00 am-9:00 am
1 stop16h 00m
Brussels Bruxelles-National
sam. 4/18
10:15 am-7:31 pm
1 stop16h 16m
$1,189
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
dim. 5/3
1:00 pm-8:40 pm
2 stops24h 40m
Charleroi Brussels
mar. 5/12
9:00 am-8:04 pm
2 stops18h 04m
$1,207
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
mer. 4/1
6:00 am-6:20 pm
2 stops29h 20m
Brussels Bruxelles-National
sam. 4/18
11:20 am-10:17 pm
2 stops17h 57m
$1,231
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
mer. 4/1
12:04 pm-7:40 am
1 stop12h 36m
Brussels Bruxelles-National
sam. 4/18
9:45 am-7:11 pm
1 stop16h 26m
$1,234
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
mar. 4/21
4:05 pm-9:15 pm
3 stops22h 10m
Charleroi Brussels
mar. 4/28
9:30 am-1:25 pm
2 stops34h 55m
$1,402
Showing 1-10 of 26 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 $424). Flying from St. Louis to Brussels in June is currently the most expensive (average of $974). 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 mars 10, 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.
Crew
8.1
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Food
6.6
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Crew
8.1
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Food
6.6
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Crew
8.1
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Food
6.6
Overall
7.4
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 Brussels. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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St. Louis and Brussels flights
Browse other St. Louis and Brussels flight options. Last updated on mars 10, 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 mars 10, 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 mars 10, 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% |