$326+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Aug 4 — Aug 111
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Belgium with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Belgium
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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 5, 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 5, 2026.
This Justfly.com deal was found by Cheapflights users on 6/30. 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 11/94:05 pm
STL
- BRU
2 stops33h 50m
Air Canada
Wed 11/2510:00 am
BRU
- STL
2 stops33h 06m
Air Canada
Deal found 6/30![Air Canada logo]()
$729
This United deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:56 pm
STL
- BRU
1 stop32h 09m
Multiple Airlines
Wed 11/2510:00 am
BRU
- STL
2 stops36h 26m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 7/3![United Airlines logo]()
$742
This Justfly.com deal was found by Cheapflights users on 6/30. 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 9/3012:10 pm
STL
- BRU
2 stops18h 05m
Multiple Airlines
Mon 10/57:30 pm
BRU
- STL
1 stop24h 55m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$868
This Gotogate deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Tue 9/229:55 am
BRU
- STL
2 stops15h 46m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$889
This FlightHub deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:10 pm
STL
- BRU
2 stops18h 05m
Air Canada
Tue 9/229:10 am
BRU
- STL
2 stops37h 28m
Air Canada
Deal found 7/1![Air Canada logo]()
$890
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:40 pm
STL
- CRL
2 stops25h 15m
Multiple Airlines
Tue 9/227:45 pm
CRL
- STL
2 stops24h 40m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,383
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/82:40 pm
STL
- CRL
2 stops16h 10m
Multiple Airlines
Sat 8/158:25 am
CRL
- STL
3 stops18h 59m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,542
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:55 am
STL
- CRL
2 stops26h 55m
Multiple Airlines
Tue 7/285:30 pm
CRL
- STL
3 stops32h 12m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,767
This Mytrip deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:40 pm
STL
- CRL
2 stops17h 50m
Multiple Airlines
Sat 8/229:50 pm
CRL
- STL
3 stops27h 52m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$1,848
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1712:10 pm
STL
- CRL
3 stops20h 00m
Multiple Airlines
Sat 7/253:35 pm
CRL
- STL
2 stops28h 50m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$2,211
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Fri 8/73:30 pm
STL
- CRL
2 stops19h 40m
Multiple Airlines
Sat 8/158:25 am
CRL
- STL
2 stops17h 17m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$2,481
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 5, 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 5, 2026.
This Justfly.com deal was found by Cheapflights users on 6/30. 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 11/94:05 pm
STL
- BRU
2 stops33h 50m
Air Canada
Wed 11/2510:00 am
BRU
- STL
2 stops33h 06m
Air Canada
Deal found 6/30![Air Canada logo]()
$729
This United Airlines deal was found by Cheapflights users on 6/30. 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 6/30![United Airlines logo]()
$742
This Justfly.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:10 pm
STL
- BRU
2 stops18h 05m
Multiple Airlines
Mon 10/57:30 pm
BRU
- STL
1 stop24h 55m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$868
This Cheapflightsfares deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:29 pm
STL
- BRU
2 stops15h 21m
Lufthansa
Mon 10/57:30 pm
BRU
- STL
2 stops24h 55m
Lufthansa
Deal found 7/3![Lufthansa logo]()
$947
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:10 pm
STL
- BRU
1 stop12h 00m
United Airlines
Wed 9/3011:10 am
BRU
- STL
1 stop16h 59m
United Airlines
Deal found 7/1![United Airlines logo]()
$914
This Gotogate deal was found by Cheapflights users on 7/5. 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.
Sat 8/88:55 am
STL
- BRU
2 stops15h 55m
Air Canada
Sat 8/159:55 am
BRU
- STL
2 stops15h 47m
Air Canada
Deal found 7/5![Air Canada logo]()
$984
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/79:20 am
STL
- BRU
2 stops20h 55m
United Airlines
Sat 8/159:30 am
BRU
- STL
1 stop16h 12m
United Airlines
Deal found 6/30![United Airlines logo]()
$1,009
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/82:40 pm
STL
- CRL
2 stops16h 10m
Multiple Airlines
Sat 8/158:25 am
CRL
- STL
2 stops18h 59m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,562
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:55 am
STL
- CRL
2 stops26h 55m
Multiple Airlines
Tue 7/285:30 pm
CRL
- STL
3 stops32h 12m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,767
This Mytrip deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:40 pm
STL
- CRL
2 stops17h 50m
Multiple Airlines
Sat 8/229:50 pm
CRL
- STL
3 stops27h 52m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$1,848
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1712:10 pm
STL
- CRL
3 stops20h 00m
Multiple Airlines
Sat 7/253:35 pm
CRL
- STL
2 stops28h 50m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$2,211
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Fri 8/73:30 pm
STL
- CRL
2 stops19h 40m
Multiple Airlines
Sat 8/158:25 am
CRL
- STL
2 stops17h 17m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$2,481
Last-minute flights from St. Louis to BelgiumDiscover last-minute flight deals from St. Louis to Belgium. Data last updated July 5, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Belgium. Data last updated July 5, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1712:10 pm
STL
- CRL
3 stops20h 00m
Multiple Airlines
Sat 7/253:35 pm
CRL
- STL
2 stops28h 50m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$2,211
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:55 am
STL
- CRL
2 stops26h 55m
Multiple Airlines
Tue 7/285:30 pm
CRL
- STL
3 stops32h 12m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,767
This Gotogate deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/712:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Sat 8/159:55 am
BRU
- STL
1 stop17h 29m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$998
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Fri 8/73:30 pm
STL
- CRL
2 stops19h 40m
Multiple Airlines
Sat 8/158:25 am
CRL
- STL
2 stops17h 17m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$2,481
This Gotogate deal was found by Cheapflights users on 7/5. 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.
Sat 8/812:10 pm
STL
- BRU
1 stop12h 00m
Multiple Airlines
Sat 8/159:55 am
BRU
- STL
1 stop17h 29m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$975
This Gotogate deal was found by Cheapflights users on 7/5. 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.
Sat 8/88:55 am
STL
- BRU
2 stops15h 55m
Air Canada
Sat 8/159:55 am
BRU
- STL
2 stops15h 47m
Air Canada
Deal found 7/5![Air Canada logo]()
$984
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/82:40 pm
STL
- CRL
2 stops16h 10m
Multiple Airlines
Sat 8/158:25 am
CRL
- STL
3 stops18h 59m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,542
This Orbitz deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:55 am
STL
- BRU
2 stops16h 55m
Multiple Airlines
Sat 8/2212:05 pm
BRU
- STL
2 stops18h 37m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$1,005
This Mytrip deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:40 pm
STL
- CRL
2 stops17h 50m
Multiple Airlines
Sat 8/229:50 pm
CRL
- STL
3 stops27h 52m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$1,848
This FlightHub deal was found by Cheapflights users on 6/30. 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 6/30![Air Canada logo]()
$894
This FlightHub deal was found by Cheapflights users on 6/30. 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 6/30![Multiple Airlines logo]()
$911
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 5, 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 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:09 pm
STL
- BRU
3 stops58h 01m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:08 pm
STL
- BRU
2 stops57h 47m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 stops46h 06m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$385
This oojo deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:51 pm
STL
- BRU
2 stops31h 04m
British Airways
Deal found 7/3![British Airways logo]()
$445
This oojo deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:58 pm
STL
- BRU
2 stops32h 42m
Aer Lingus
Deal found 7/1![Aer Lingus logo]()
$455
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/312:10 pm
STL
- BRU
2 stops18h 05m
United Airlines
Deal found 6/30![United Airlines logo]()
$459
This KLM deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:33 pm
STL
- BRU
1 stop31h 07m
KLM
Deal found 7/1![KLM logo]()
$465
This FlightHub deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:10 pm
STL
- BRU
2 stops36h 40m
Air Canada
Deal found 7/1![Air Canada logo]()
$470
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 5, 2026.
Round-trip from | $729 (Justfly.com) |
|---|---|
One-way from | $326 (Kiwi.com) |
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 5, 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
Mon 11/9
4:05 pm-8:55 am
2 stops33h 50m
Brussels Bruxelles-National
Wed 11/25
10:00 am-12:06 pm
2 stops33h 06m
$729
Quickest round-trip
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Mon 11/9
3:15 pm-1:15 pm
2 stops15h 00m
Brussels Bruxelles-National
Wed 11/25
8:25 am-1:45 pm
1 stop12h 20m
$742
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 9/30
12:10 pm-1:15 pm
2 stops18h 05m
Brussels Bruxelles-National
Mon 10/5
7:30 pm-1:25 pm
1 stop24h 55m
$868
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 9/23
12:10 pm-7:10 am
1 stop12h 00m
Brussels Bruxelles-National
Wed 9/30
11:10 am-9:09 pm
1 stop16h 59m
$914
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 9/30
1:29 pm-11:50 am
2 stops15h 21m
Brussels Bruxelles-National
Mon 10/5
7:30 pm-1:25 pm
2 stops24h 55m
$947
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Sat 8/8
8:55 am-7:50 am
2 stops15h 55m
Brussels Bruxelles-National
Sat 8/15
9:55 am-6:42 pm
2 stops15h 47m
$984
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Fri 8/7
9:20 am-1:15 pm
2 stops20h 55m
Brussels Bruxelles-National
Sat 8/15
9:30 am-6:42 pm
1 stop16h 12m
$1,009
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Sat 8/8
2:40 pm-1:50 pm
2 stops16h 10m
Charleroi Brussels
Sat 8/15
8:25 am-8:24 pm
2 stops18h 59m
$1,562
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Tue 7/21
8:55 am-6:50 pm
2 stops26h 55m
Charleroi Brussels
Tue 7/28
5:30 pm-6:42 pm
3 stops32h 12m
$1,767
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Thu 8/20
2:40 pm-3:30 pm
2 stops17h 50m
Charleroi Brussels
Sat 8/22
9:50 pm-6:42 pm
3 stops27h 52m
$1,848
Showing 1-10 of 17 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 5, 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.
Comfort
7.3
Crew
8.1
Boarding
7.7
Overall
7.4
Food
6.7
Entertainment
7.1
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Overall
7.4
Food
6.7
Entertainment
7.1
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Overall
7.4
Food
6.7
Entertainment
7.1
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 5, 2026.
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St. Louis to Belgium flights
Consider these flights traveling from St. Louis to Belgium.
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 5, 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% |