$184+ Cheap flights from St. Louis (STL) to Belgium
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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Aug 10 — Aug 171
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from St. Louis to BelgiumExplore the most affordable flight options available from St. Louis to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2026.
Explore the most affordable flight options available from St. Louis to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2026.
This Air Canada deal was found by Cheapflights users on 7/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:05 pm
STL
- BRU
2 stops20h 55m
Air Canada
Wed 11/2510:00 am
BRU
- STL
2 stops33h 06m
Air Canada
Deal found 7/9![Air Canada logo]()
$730
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/93:15 pm
STL
- BRU
2 stops15h 00m
United Airlines
Wed 11/258:25 am
BRU
- STL
1 stop12h 20m
United Airlines
Deal found 7/9![United Airlines logo]()
$743
This Gotogate deal was found by Cheapflights users on 7/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Tue 8/259:30 am
BRU
- STL
1 stop16h 12m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$807
This Gotogate deal was found by Cheapflights users on 7/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:10 pm
STL
- BRU
1 stop12h 00m
Air Canada
Tue 8/259:30 am
BRU
- STL
1 stop16h 12m
Air Canada
Deal found 7/7![Air Canada logo]()
$818
This Finnair deal was found by Cheapflights users on 7/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:01 am
STL
- BRU
2 stops24h 19m
Multiple Airlines
Mon 10/57:05 pm
BRU
- STL
2 stops33h 54m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$826
This Air Canada deal was found by Cheapflights users on 7/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm
STL
- BRU
2 stops24h 50m
Air Canada
Fri 10/239:10 am
BRU
- STL
2 stops37h 33m
Air Canada
Deal found 7/8![Air Canada logo]()
$831
This Air Canada deal was found by Cheapflights users on 7/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:10 pm
STL
- BRU
1 stop12h 00m
Air Canada
Fri 10/239:10 am
BRU
- STL
2 stops37h 33m
Air Canada
Deal found 7/8![Air Canada logo]()
$834
This Mytrip deal was found by Cheapflights users on 7/7. 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.
Sun 8/168:55 am
STL
- CRL
3 stops30h 30m
Multiple Airlines
Tue 8/254:40 pm
CRL
- STL
2 stops27h 45m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$1,122
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Thu 8/68:55 am
STL
- CRL
2 stops26h 15m
Multiple Airlines
Thu 8/136:35 am
CRL
- STL
2 stops20h 49m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,213
This Mytrip deal was found by Cheapflights users on 7/9. 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.
Mon 8/312:40 pm
STL
- CRL
2 stops21h 00m
Multiple Airlines
Mon 9/77:10 am
CRL
- STL
2 stops20h 12m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$1,664
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sun 7/1212:10 pm
STL
- CRL
2 stops23h 20m
Multiple Airlines
Tue 7/146:15 pm
CRL
- STL
2 stops26h 10m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,894
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sat 7/1112:10 pm
STL
- CRL
3 stops24h 50m
Multiple Airlines
Mon 7/138:15 pm
CRL
- STL
2 stops24h 10m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$2,683
Best flights from St. Louis to BelgiumDiscover carefully curated flight deals from St. Louis to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2026.
Discover carefully curated flight deals from St. Louis to Belgium that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2026.
This Finnair deal was found by Cheapflights users on 7/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:01 am
STL
- BRU
2 stops24h 19m
Multiple Airlines
Mon 10/57:05 pm
BRU
- STL
2 stops33h 54m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$826
This United Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:10 pm
STL
- BRU
1 stop12h 00m
United Airlines
Tue 8/259:30 am
BRU
- STL
2 stops32h 47m
United Airlines
Deal found 7/8![United Airlines logo]()
$838
This FlightHub deal was found by Cheapflights users on 7/6. 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.
Mon 8/2412:10 pm
STL
- BRU
2 stops24h 50m
Air Canada
Sat 9/59:30 am
BRU
- STL
2 stops33h 32m
Air Canada
Deal found 7/6![Air Canada logo]()
$895
This FlightHub deal was found by Cheapflights users on 7/6. 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.
Mon 8/2412:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Sat 9/59:30 am
BRU
- STL
1 stop16h 12m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$912
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Thu 8/63:22 pm
STL
- BRU
2 stops14h 53m
United Airlines
Thu 8/1312:00 pm
BRU
- STL
2 stops17h 00m
United Airlines
Deal found 7/8![United Airlines logo]()
$951
This Mytrip deal was found by Cheapflights users on 7/7. 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.
Sun 8/168:55 am
STL
- CRL
3 stops30h 30m
Multiple Airlines
Tue 8/254:40 pm
CRL
- STL
2 stops27h 45m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$1,122
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Sat 8/156:54 pm
STL
- BRU
1 stop31h 06m
United Airlines
Thu 8/209:55 am
BRU
- STL
2 stops31h 17m
United Airlines
Deal found 7/8![United Airlines logo]()
$1,286
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Thu 8/68:55 am
STL
- CRL
2 stops26h 15m
Multiple Airlines
Thu 8/136:35 am
CRL
- STL
2 stops20h 49m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,213
Last-minute flights from St. Louis to BelgiumDiscover last-minute flight deals from St. Louis to Belgium. Data last updated July 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Belgium. Data last updated July 11, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sat 7/1112:10 pm
STL
- CRL
3 stops24h 50m
Multiple Airlines
Mon 7/138:15 pm
CRL
- STL
2 stops24h 10m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$2,683
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Sun 7/1212:10 pm
STL
- CRL
2 stops23h 20m
Multiple Airlines
Tue 7/146:15 pm
CRL
- STL
2 stops26h 10m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,894
This Mytrip deal was found by Cheapflights users on 7/8. 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.
Thu 8/68:55 am
STL
- CRL
2 stops26h 15m
Multiple Airlines
Thu 8/136:35 am
CRL
- STL
2 stops20h 49m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,213
This Gotogate deal was found by Cheapflights users on 7/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Tue 8/259:30 am
BRU
- STL
1 stop16h 12m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$807
This Gotogate deal was found by Cheapflights users on 7/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:10 pm
STL
- BRU
1 stop12h 00m
Air Canada
Tue 8/259:30 am
BRU
- STL
1 stop16h 12m
Air Canada
Deal found 7/7![Air Canada logo]()
$818
This United Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:10 pm
STL
- BRU
1 stop12h 00m
United Airlines
Tue 8/259:30 am
BRU
- STL
2 stops32h 47m
United Airlines
Deal found 7/8![United Airlines logo]()
$838
This Delta deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:44 am
STL
- BRU
1 stop13h 56m
Delta
Tue 8/259:45 am
BRU
- STL
1 stop13h 32m
Delta
Deal found 7/10![Delta logo]()
$853
This Mytrip deal was found by Cheapflights users on 7/7. 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.
Sun 8/168:55 am
STL
- CRL
3 stops30h 30m
Multiple Airlines
Tue 8/254:40 pm
CRL
- STL
2 stops27h 45m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$1,122
This Gotogate deal was found by Cheapflights users on 7/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Fri 8/289:30 am
BRU
- STL
1 stop16h 12m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$884
This Justfly.com deal was found by Cheapflights users on 7/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:10 pm
STL
- BRU
2 stops24h 50m
Air Canada
Sat 9/59:30 am
BRU
- STL
2 stops33h 32m
Air Canada
Deal found 7/9![Air Canada logo]()
$895
This Mytrip deal was found by Cheapflights users on 7/9. 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.
Mon 8/312:40 pm
STL
- CRL
2 stops21h 00m
Multiple Airlines
Mon 9/77:10 am
CRL
- STL
2 stops20h 12m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$1,664
One-way flights from St. Louis to BelgiumSearch for one-way flight options from St. Louis to Belgium. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
Search for one-way flight options from St. Louis to Belgium. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
This Ovago deal was found by Cheapflights users on 7/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:55 am
STL
- BRU
2 stops17h 45m
Aer Lingus
Deal found 7/8![Aer Lingus logo]()
$184
This Ovago deal was found by Cheapflights users on 7/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:55 am
STL
- BRU
2 stops17h 45m
Aer Lingus
Deal found 7/8![Aer Lingus logo]()
$234
This Ovago deal was found by Cheapflights users on 7/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:55 am
STL
- BRU
2 stops17h 45m
Aer Lingus
Deal found 7/8![Aer Lingus logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:09 pm
STL
- BRU
3 stops58h 01m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$318
This Ovago deal was found by Cheapflights users on 7/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:55 am
STL
- BRU
2 stops17h 45m
Aer Lingus
Deal found 7/8![Aer Lingus logo]()
$358
This Ovago deal was found by Cheapflights users on 7/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:55 am
STL
- BRU
2 stops17h 45m
Aer Lingus
Deal found 7/8![Aer Lingus logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:17 pm
STL
- BRU
3 stops35h 38m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:17 pm
STL
- BRU
3 stops35h 38m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:09 pm
STL
- CRL
3 stops47h 21m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:58 pm
STL
- CRL
3 stops43h 57m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:27 pm
STL
- BRU
3 stops36h 28m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:17 pm
STL
- BRU
3 stops59h 38m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$404
Find flight deals from St. Louis to Belgium
Keep the following information in mind while searching for St. Louis to Belgium flight deals. Data was last updated July 11, 2026.
Round-trip from | $807 (Gotogate) |
|---|---|
One-way from | $184 (Ovago) |
Popular in | December |
Cheapest in | February |
Average price | $1,057 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Belgium 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 11, 2026.
Use the filters below to find and compare flights from St. Louis to Belgium 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
11:01 am-6:20 pm
2 stops24h 19m
Brussels Bruxelles-National
Mon 10/5
7:05 pm-9:59 pm
2 stops33h 54m
$826
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Sun 8/16
12:10 pm-7:10 am
1 stop12h 00m
Brussels Bruxelles-National
Tue 8/25
9:30 am-11:17 am
2 stops32h 47m
$838
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Mon 8/24
12:10 pm-8:00 pm
2 stops24h 50m
Brussels Bruxelles-National
Sat 9/5
9:30 am-12:02 pm
2 stops33h 32m
$895
Quickest round-trip
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Mon 8/24
12:10 pm-7:10 am
1 stop12h 00m
Brussels Bruxelles-National
Sat 9/5
9:30 am-6:42 pm
1 stop16h 12m
$912
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Thu 8/6
3:22 pm-1:15 pm
2 stops14h 53m
Brussels Bruxelles-National
Thu 8/13
12:00 pm-10:00 pm
2 stops17h 00m
$951
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Sun 8/16
8:55 am-10:25 pm
3 stops30h 30m
Charleroi Brussels
Tue 8/25
4:40 pm-1:25 pm
2 stops27h 45m
$1,122
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Thu 8/6
8:55 am-6:10 pm
2 stops26h 15m
Charleroi Brussels
Thu 8/13
6:35 am-8:24 pm
2 stops20h 49m
$1,213
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Sat 8/15
6:54 pm-9:00 am
1 stop31h 06m
Brussels Bruxelles-National
Thu 8/20
9:55 am-10:12 am
2 stops31h 17m
$1,286
Cheapest one-way
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Sat 8/22
8:55 am-9:40 am
2 stops17h 45m
$358
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Sat 8/8
4:09 pm-10:30 pm
3 stops47h 21m
$372
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Belgium
Have a flexible travel schedule? Discover the best time to fly to Belgium from St. Louis with our price prediction graph.
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 Belgium
STL-BE0
STL-BRU
STL-CRL
What is the cheapest month to book a flight from St. Louis to Belgium?
Currently, April is the cheapest month in which you can book a flight from St. Louis to Belgium (average of $414). Flying from St. Louis to Belgium in June is currently the most expensive (average of $1,282). 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.
Reviews of airlines servicing Belgium
Get insights into the airlines that provide service to Belgium. 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 Belgium. Reviews last updated July 11, 2026.
Read reviews from past customers who have flown United Airlines and Lufthansa from St. Louis to Belgium. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Entertainment
7.1
Comfort
7.3
Food
6.7
Overall
7.4
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Crew
8.1
Entertainment
7.1
Comfort
7.3
Food
6.7
Overall
7.4
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Crew
8.1
Entertainment
7.1
Comfort
7.3
Food
6.7
Overall
7.4
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 Belgium. 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 Belgium
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Complete your trip
Complete your trip to Belgium by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Belgium, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Belgium flights
Browse other St. Louis and Belgium flight options. Last updated on July 11, 2026.
Popular flight searches
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Top 2 airlines flying from St. Louis to Belgium
Discover the top 2 airlines that operate flights from St. Louis to Belgium. 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 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$441 | Average$1,282 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$574 | Average$875 | FlexibilityNo cancel fee | On-time69% |