$341+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Sep 20 — Sep 271
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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Best
Last-minute
One-way
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 August 21, 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 August 21, 2026.
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:05 am -
2 stops22h 10m
Fri 12/1110:00 am -
2 stops31h 10m
Deal found 8/20![United Airlines logo]()
$727
This Gotogate deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm -
1 stop12h 00m
Wed 9/309:10 am -
1 stop16h 31m
Deal found 8/17![Multiple Airlines logo]()
$767
This Gotogate deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm -
2 stops18h 05m
Wed 9/309:10 am -
1 stop16h 31m
Deal found 8/17![Air Canada logo]()
$771
This United deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:01 pm -
1 stop30h 59m
Thu 10/2910:00 am -
2 stops35h 26m
Deal found 8/19![Multiple Airlines logo]()
$796
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:00 am -
1 stop18h 00m
Wed 9/309:10 am -
1 stop16h 31m
Deal found 8/17![United Airlines logo]()
$800
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:55 am -
3 stops25h 50m
Tue 9/84:15 pm -
3 stops33h 26m
Deal found 8/18![Multiple Airlines logo]()
$1,684
This Mytrip deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:30 pm -
2 stops21h 25m
Thu 10/292:40 pm -
2 stops30h 05m
Deal found 8/19![Multiple Airlines logo]()
$1,762
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm -
3 stops20h 25m
Wed 9/307:20 pm -
3 stops30h 21m
Deal found 8/17![Multiple Airlines logo]()
$1,788
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:55 am -
2 stops29h 45m
Thu 10/88:50 pm -
2 stops23h 35m
Deal found 8/17![Multiple Airlines logo]()
$2,146
This Mytrip deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:40 pm -
2 stops25h 05m
Wed 9/167:30 pm -
3 stops30h 11m
Deal found 8/19![Multiple Airlines logo]()
$2,483
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 August 21, 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 August 21, 2026.
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/710:50 am -
1 stop15h 05m
Fri 12/117:00 am -
1 stop13h 45m
Deal found 8/20![United Airlines logo]()
$747
This Finnair deal was found by Cheapflights users on 8/17. 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 9/305:18 pm -
2 stops18h 02m
Mon 10/57:05 pm -
2 stops31h 43m
Deal found 8/17![Multiple Airlines logo]()
$826
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:59 pm -
1 stop13h 01m
Wed 9/3012:00 pm -
2 stops14h 41m
Deal found 8/17![United Airlines logo]()
$802
This United deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:50 pm -
1 stop31h 05m
Sun 11/2910:00 am -
2 stops36h 26m
Deal found 8/21![Multiple Airlines logo]()
$857
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:10 pm -
1 stop12h 00m
Thu 10/2910:10 am -
1 stop13h 59m
Deal found 8/19![United Airlines logo]()
$806
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/258:05 am -
2 stops16h 10m
Wed 12/3010:00 am -
2 stops15h 18m
Deal found 8/17![United Airlines logo]()
$842
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:50 pm -
2 stops31h 20m
Sat 10/102:25 pm -
2 stops30h 52m
Deal found 8/19![United Airlines logo]()
$899
This United deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:58 pm -
2 stops29h 52m
Sun 12/2710:00 am -
2 stops36h 26m
Deal found 8/20![Multiple Airlines logo]()
$1,179
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:10 pm -
2 stops24h 50m
Tue 9/89:10 am -
2 stops36h 05m
Deal found 8/18![United Airlines logo]()
$1,030
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:55 am -
3 stops25h 50m
Tue 9/84:15 pm -
3 stops33h 26m
Deal found 8/18![Multiple Airlines logo]()
$1,684
This Mytrip deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:30 pm -
2 stops21h 25m
Thu 10/292:40 pm -
2 stops30h 05m
Deal found 8/19![Multiple Airlines logo]()
$1,762
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm -
3 stops20h 25m
Wed 9/307:20 pm -
3 stops30h 21m
Deal found 8/17![Multiple Airlines logo]()
$1,788
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:55 am -
2 stops29h 45m
Thu 10/88:50 pm -
2 stops23h 35m
Deal found 8/17![Multiple Airlines logo]()
$2,146
This Mytrip deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:40 pm -
2 stops25h 05m
Wed 9/167:30 pm -
3 stops30h 11m
Deal found 8/19![Multiple Airlines logo]()
$2,483
Last-minute flights from St. Louis to BelgiumDiscover last-minute flight deals from St. Louis to Belgium. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Belgium. Data last updated August 21, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:40 pm -
2 stops25h 05m
Wed 9/167:30 pm -
3 stops30h 11m
Deal found 8/19![Multiple Airlines logo]()
$2,483
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:55 am -
3 stops25h 50m
Tue 9/84:15 pm -
3 stops33h 26m
Deal found 8/18![Multiple Airlines logo]()
$1,684
This Gotogate deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm -
1 stop12h 00m
Wed 9/309:10 am -
1 stop16h 31m
Deal found 8/17![Multiple Airlines logo]()
$767
This Gotogate deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm -
2 stops18h 05m
Wed 9/309:10 am -
1 stop16h 31m
Deal found 8/17![Air Canada logo]()
$771
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:00 am -
1 stop18h 00m
Wed 9/309:10 am -
1 stop16h 31m
Deal found 8/17![United Airlines logo]()
$800
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:54 pm -
2 stops17h 31m
Wed 9/3011:00 am -
2 stops17h 24m
Deal found 8/17![American Airlines logo]()
$818
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm -
3 stops20h 25m
Wed 9/307:20 pm -
3 stops30h 21m
Deal found 8/17![Multiple Airlines logo]()
$1,788
This Finnair deal was found by Cheapflights users on 8/17. 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 9/305:18 pm -
2 stops18h 02m
Mon 10/57:05 pm -
2 stops31h 43m
Deal found 8/17![Multiple Airlines logo]()
$826
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 August 21, 2026.
Search for one-way flight options from St. Louis to Belgium. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Justfly.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:05 pm -
2 stops38h 10m
Deal found 8/18![Air Canada logo]()
$341
This TravelUp deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:04 pm -
1 stop30h 51m
Deal found 8/18![Lufthansa logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:05 pm -
3 stops40h 00m
Deal found 8/18![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:29 pm -
3 stops20h 21m
Deal found 8/20![Multiple Airlines logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:29 pm -
3 stops39h 26m
Deal found 8/20![Multiple Airlines logo]()
$427
This Cheapflightsfares deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am -
2 stops20h 40m
Deal found 8/18![Aer Lingus logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:45 pm -
3 stops59h 10m
Deal found 8/18![Multiple Airlines logo]()
$485
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:05 pm -
2 stops21h 35m
Deal found 8/18![Multiple Airlines logo]()
$556
This Cheapflightsfares deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:35 pm -
1 stop10h 40m
Deal found 8/18![British Airways logo]()
$681
This oojo deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:30 pm -
1 stop13h 20m
Deal found 8/20![Lufthansa logo]()
$703
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:55 am -
2 stops23h 35m
Deal found 8/18![Multiple Airlines logo]()
$704
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 August 21, 2026.
Round-trip from | $727 (United Airlines) |
|---|---|
One-way from | $341 (Justfly.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,111 |
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 7,457,451 searches. Data last updated August 21, 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 Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Mon 12/7
10:50 am-8:55 am
1 stop15h 05m
Brussels Bruxelles-National
Fri 12/11
7:00 am-1:45 pm
1 stop13h 45m
$747
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Mon 9/21
12:59 pm-9:00 am
1 stop13h 01m
Brussels Bruxelles-National
Wed 9/30
12:00 pm-7:41 pm
2 stops14h 41m
$802
Quickest round-trip
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Mon 10/19
12:10 pm-7:10 am
1 stop12h 00m
Brussels Bruxelles-National
Thu 10/29
10:10 am-6:09 pm
1 stop13h 59m
$806
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Wed 9/30
5:18 pm-6:20 pm
2 stops18h 02m
Brussels Bruxelles-National
Mon 10/5
7:05 pm-7:48 pm
2 stops31h 43m
$826
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Fri 12/25
8:05 am-7:15 am
2 stops16h 10m
Brussels Bruxelles-National
Wed 12/30
10:00 am-6:18 pm
2 stops15h 18m
$842
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Sat 11/21
6:50 pm-8:55 am
1 stop31h 05m
Brussels Bruxelles-National
Sun 11/29
10:00 am-3:26 pm
2 stops36h 26m
$857
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Sat 10/3
4:50 pm-7:10 am
2 stops31h 20m
Brussels Bruxelles-National
Sat 10/10
2:25 pm-2:17 pm
2 stops30h 52m
$899
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Wed 9/2
12:10 pm-8:00 pm
2 stops24h 50m
Brussels Bruxelles-National
Tue 9/8
9:10 am-2:15 pm
2 stops36h 05m
$1,030
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Sat 12/19
6:58 pm-7:50 am
2 stops29h 52m
Brussels Bruxelles-National
Sun 12/27
10:00 am-3:26 pm
2 stops36h 26m
$1,179
St. LouisBrussels
STL Lambert-St Louis - CRL Charleroi Brussels
STLCRL
Lambert-St Louis
Wed 9/2
8:55 am-5:45 pm
3 stops25h 50m
Charleroi Brussels
Tue 9/8
4:15 pm-6:41 pm
3 stops33h 26m
$1,684
Showing 1-10 of 23 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, February is the cheapest month in which you can book a flight from St. Louis to Belgium (average of $494). Flying from St. Louis to Belgium in December is currently the most expensive (average of $2,205). 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 August 21, 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.
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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
See prices for flight routes from nearby airports that may be better suited for you.
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 August 21, 2026.
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St. Louis to Belgium flights
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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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$441 | Average$1,282 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$507 | Average$1,053 | FlexibilityNo cancel fee | On-time69% |