$460+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Jun 17 — Jun 241
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 May 18, 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 May 18, 2026.
This American Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:00 pm
STL
- BRU
2 stops18h 35m
American Airlines
Tue 11/37:00 am
BRU
- STL
2 stops19h 27m
American Airlines
Deal found 5/13![American Airlines logo]()
$813
This KAYAK deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:30 pm
STL
- BRU
2 stops24h 20m
Scandinavian Airlines
Wed 11/410:20 am
BRU
- STL
2 stops20h 19m
Scandinavian Airlines
Deal found 5/13![Scandinavian Airlines logo]()
$824
This Air Canada deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:15 pm
STL
- BRU
2 stops39h 00m
Air Canada
Wed 11/410:00 am
BRU
- STL
2 stops35h 18m
Air Canada
Deal found 5/13![Air Canada logo]()
$842
This Air Canada deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:49 pm
STL
- BRU
2 stops31h 01m
Air Canada
Fri 11/610:00 am
BRU
- STL
2 stops36h 38m
Air Canada
Deal found 5/13![Air Canada logo]()
$845
This Air Canada deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:15 pm
STL
- BRU
2 stops33h 35m
Air Canada
Fri 11/610:00 am
BRU
- STL
2 stops36h 38m
Air Canada
Deal found 5/13![Air Canada logo]()
$848
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:40 am
STL
- BRU
1 stop20h 15m
United Airlines
Wed 11/47:00 am
BRU
- STL
1 stop13h 55m
United Airlines
Deal found 5/13![United Airlines logo]()
$852
This KAYAK deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:42 pm
STL
- BRU
2 stops35h 58m
Scandinavian Airlines
Wed 11/410:20 am
BRU
- STL
2 stops20h 19m
Scandinavian Airlines
Deal found 5/13![Scandinavian Airlines logo]()
$854
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:20 pm
STL
- BRU
2 stops13h 55m
United Airlines
Fri 11/67:00 am
BRU
- STL
1 stop13h 55m
United Airlines
Deal found 5/13![United Airlines logo]()
$855
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:15 pm
STL
- BRU
2 stops15h 00m
United Airlines
Thu 11/510:10 am
BRU
- STL
1 stop17h 59m
United Airlines
Deal found 5/13![United Airlines logo]()
$856
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:20 pm
STL
- BRU
2 stops13h 55m
United Airlines
Thu 11/510:10 am
BRU
- STL
1 stop14h 59m
United Airlines
Deal found 5/13![United Airlines logo]()
$858
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:15 pm
STL
- BRU
2 stops15h 00m
United Airlines
Fri 11/611:55 am
BRU
- STL
2 stops17h 59m
United Airlines
Deal found 5/13![United Airlines logo]()
$860
This Mytrip deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:55 am
STL
- CRL
3 stops29h 05m
Multiple Airlines
Mon 8/107:55 am
CRL
- STL
2 stops19h 12m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$1,381
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 May 18, 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 May 18, 2026.
This Finnair deal was found by Cheapflights users on 5/17. 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 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 5/17![Multiple Airlines logo]()
$890
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:15 pm
STL
- BRU
1 stop11h 40m
United Airlines
Sun 11/110:10 am
BRU
- STL
1 stop12h 28m
United Airlines
Deal found 5/13![United Airlines logo]()
$905
This KAYAK deal was found by Cheapflights users on 5/17. 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 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 stop10h 30m
British Airways
Mon 10/58:50 pm
BRU
- STL
1 stop29h 40m
British Airways
Deal found 5/17![British Airways logo]()
$913
This Air Canada deal was found by Cheapflights users on 5/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:40 pm
STL
- BRU
2 stops15h 35m
Air Canada
Mon 10/59:25 am
BRU
- STL
1 stop16h 16m
Air Canada
Deal found 5/17![Air Canada logo]()
$970
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:30 am
STL
- BRU
2 stops19h 20m
United Airlines
Sun 11/111:15 am
BRU
- STL
1 stop12h 25m
United Airlines
Deal found 5/13![United Airlines logo]()
$910
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:30 am
STL
- BRU
2 stops16h 40m
United Airlines
Mon 10/52:25 pm
BRU
- STL
1 stop30h 00m
United Airlines
Deal found 5/14![United Airlines logo]()
$939
This United Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
1 stop12h 00m
United Airlines
Mon 8/109:40 am
BRU
- STL
1 stop16h 02m
United Airlines
Deal found 5/15![United Airlines logo]()
$1,019
This Mytrip deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:55 am
STL
- CRL
3 stops29h 05m
Multiple Airlines
Mon 8/107:55 am
CRL
- STL
2 stops19h 12m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$1,381
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:05 pm
STL
- BRU
2 stops17h 10m
United Airlines
Wed 7/112:00 pm
BRU
- STL
2 stops29h 34m
United Airlines
Deal found 5/14![United Airlines logo]()
$1,167
This Mytrip deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/132:15 pm
STL
- CRL
2 stops19h 45m
Multiple Airlines
Sat 6/208:45 am
CRL
- STL
2 stops34h 36m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$1,586
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:14 am
STL
- BRU
1 stop16h 46m
United Airlines
Mon 6/229:40 am
BRU
- STL
1 stop17h 45m
United Airlines
Deal found 5/13![United Airlines logo]()
$1,230
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/172:15 pm
STL
- CRL
3 stops24h 10m
Multiple Airlines
Wed 7/19:50 pm
CRL
- STL
3 stops29h 17m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,767
Last-minute flights from St. Louis to BelgiumDiscover last-minute flight deals from St. Louis to Belgium. Data last updated May 18, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Belgium. Data last updated May 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/191:05 pm
STL
- BRU
2 stops36h 50m
United Airlines
Mon 5/259:55 am
BRU
- STL
2 stops35h 28m
United Airlines
Deal found 5/13![United Airlines logo]()
$1,070
This FlightHub deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/191:05 pm
STL
- BRU
2 stops23h 55m
Air Canada
Fri 5/299:55 am
BRU
- STL
2 stops33h 12m
Air Canada
Deal found 5/13![Air Canada logo]()
$1,160
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:05 am
STL
- BRU
3 stops24h 30m
Multiple Airlines
Mon 5/258:30 pm
BRU
- STL
3 stops30h 39m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,219
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:05 am
STL
- CRL
3 stops31h 10m
Multiple Airlines
Mon 5/254:50 pm
CRL
- STL
3 stops34h 35m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,592
This Mytrip deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:05 am
STL
- CRL
3 stops31h 10m
Multiple Airlines
Thu 5/218:35 pm
CRL
- STL
2 stops23h 50m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$2,225
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:30 am
STL
- BRU
2 stops17h 45m
United Airlines
Mon 5/259:55 am
BRU
- STL
2 stops35h 28m
United Airlines
Deal found 5/13![United Airlines logo]()
$1,079
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:05 am
STL
- CRL
3 stops31h 00m
Multiple Airlines
Mon 5/257:05 pm
CRL
- STL
3 stops32h 20m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$2,302
This Mytrip deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/132:15 pm
STL
- CRL
2 stops19h 45m
Multiple Airlines
Sat 6/208:45 am
CRL
- STL
2 stops34h 36m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$1,586
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:05 pm
STL
- BRU
2 stops17h 10m
United Airlines
Wed 7/111:10 am
BRU
- STL
1 stop19h 34m
United Airlines
Deal found 5/13![United Airlines logo]()
$1,163
This KAYAK deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:05 pm
STL
- BRU
1 stop11h 05m
Multiple Airlines
Wed 7/111:10 am
BRU
- STL
1 stop19h 34m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,215
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/172:15 pm
STL
- CRL
3 stops24h 10m
Multiple Airlines
Wed 7/19:50 pm
CRL
- STL
3 stops29h 17m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,767
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 May 18, 2026.
Search for one-way flight options from St. Louis to Belgium. Find affordable one-way fares based on user searches. Data last updated May 18, 2026.
This American Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 5/16![American Airlines logo]()
$460
This KLM deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:00 am
STL
- BRU
1 stop13h 40m
KLM
Deal found 5/15![KLM logo]()
$464
This oojo deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:58 pm
STL
- BRU
2 stops32h 42m
Aer Lingus
Deal found 5/13![Aer Lingus logo]()
$488
This KAYAK deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:10 pm
STL
- BRU
1 stop12h 00m
Austrian Airlines
Deal found 5/13![Austrian Airlines logo]()
$612
This Cathay Pacific deal was found by Cheapflights users on 5/17. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:00 am
STL
- BRU
3 stops44h 55m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$7,777
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 May 18, 2026.
Round-trip from | $813 (American Airlines) |
|---|---|
One-way from | $460 (American Airlines) |
Popular in | December |
Cheapest in | February |
Average price | $1,874 |
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 May 18, 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
7:44 am-6:20 pm
2 stops27h 36m
Brussels Bruxelles-National
Mon 10/5
7:05 pm-7:46 pm
2 stops31h 41m
$890
Quickest round-trip
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Fri 10/30
3:15 pm-8:55 am
1 stop11h 40m
Brussels Bruxelles-National
Sun 11/1
10:10 am-3:38 pm
1 stop12h 28m
$905
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Tue 10/27
6:30 am-7:50 am
2 stops19h 20m
Brussels Bruxelles-National
Sun 11/1
11:15 am-4:40 pm
1 stop12h 25m
$910
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 9/30
9:35 pm-3:05 pm
1 stop10h 30m
Brussels Bruxelles-National
Mon 10/5
8:50 pm-7:30 pm
1 stop29h 40m
$913
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 9/30
7:30 am-7:10 am
2 stops16h 40m
Brussels Bruxelles-National
Mon 10/5
2:25 pm-1:25 pm
1 stop30h 00m
$939
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 9/30
2:40 pm-1:15 pm
2 stops15h 35m
Brussels Bruxelles-National
Mon 10/5
9:25 am-6:41 pm
1 stop16h 16m
$970
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Mon 8/3
12:10 pm-7:10 am
1 stop12h 00m
Brussels Bruxelles-National
Mon 8/10
9:40 am-6:42 pm
1 stop16h 02m
$1,019
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 6/17
1:05 pm-1:15 pm
2 stops17h 10m
Brussels Bruxelles-National
Wed 7/1
12:00 pm-10:34 am
2 stops29h 34m
$1,167
St. LouisBrussels
STL - BRU
STLBRU
Lambert-St Louis
Wed 6/10
9:14 am-9:00 am
1 stop16h 46m
Brussels Bruxelles-National
Mon 6/22
9:40 am-8:25 pm
1 stop17h 45m
$1,230
St. LouisBrussels
STL - CRL
STLCRL
Lambert-St Louis
Mon 8/3
8:55 am-9:00 pm
3 stops29h 05m
Charleroi Brussels
Mon 8/10
7:55 am-8:07 pm
2 stops19h 12m
$1,381
Showing 1-10 of 16 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 $1,260). 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 May 18, 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.
Food
6.6
Overall
7.4
Comfort
7.3
Entertainment
7.1
Crew
8.1
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.6
Overall
7.4
Comfort
7.3
Entertainment
7.1
Crew
8.1
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.6
Overall
7.4
Comfort
7.3
Entertainment
7.1
Crew
8.1
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - 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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St. Louis and Belgium flights
Browse other St. Louis and Belgium flight options. Last updated on May 18, 2026.
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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 May 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$441 | Average$2,200 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$574 | Average$856 | FlexibilityNo cancel fee | On-time69% |