$449+ Cheap flights from St. Louis (STL) to Brussels
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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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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Best
Last-minute
One-way
Cheapest flights from St. Louis to BrusselsExplore the most affordable flight options available from St. Louis to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from St. Louis to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This Ticket deal was found by Cheapflights users on 9/9. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:00 pm -
1 stop13h 00m
Sun 11/812:55 pm -
1 stop34h 28m
Deal found 9/9![Multiple Airlines logo]()
$638
This Ticket deal was found by Cheapflights users on 9/9. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:35 am -
2 stops15h 00m
Sun 11/812:55 pm -
1 stop34h 28m
Deal found 9/9![KLM logo]()
$680
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am -
1 stop18h 40m
Wed 10/2812:55 pm -
1 stop16h 59m
Deal found 9/9![Delta logo]()
$706
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:35 pm -
1 stop10h 40m
Wed 10/282:00 pm -
2 stops25h 29m
Deal found 9/9![Multiple Airlines logo]()
$719
This Gotogate deal was found by Cheapflights users on 9/7. 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.
Mon 11/24:05 pm -
2 stops21h 05m
Wed 11/118:25 am -
1 stop12h 20m
Deal found 9/7![Multiple Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/73:30 pm -
2 stops14h 45m
Fri 12/1110:00 am -
2 stops37h 19m
Deal found 9/6![United Airlines logo]()
$727
This Flighttix deal was found by Cheapflights users on 9/7. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:53 am -
2 stops13h 57m
Wed 11/1110:00 am -
2 stops18h 40m
Deal found 9/7![Air Canada logo]()
$728
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/21:08 pm -
1 stop12h 47m
Wed 11/1110:10 am -
1 stop14h 59m
Deal found 9/7![United Airlines logo]()
$739
This Mytrip deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:40 pm -
2 stops13h 45m
Tue 10/1310:00 pm -
2 stops27h 41m
Deal found 9/6![Multiple Airlines logo]()
$1,646
This Mytrip deal was found by Cheapflights users on 9/8. 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 10/112:40 pm -
2 stops18h 00m
Sat 10/176:50 pm -
2 stops25h 35m
Deal found 9/8![Multiple Airlines logo]()
$1,666
This Mytrip deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:05 pm -
2 stops15h 15m
Sat 12/123:35 pm -
2 stops29h 10m
Deal found 9/6![Multiple Airlines logo]()
$1,935
This Mytrip deal was found by Cheapflights users on 9/8. 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 10/2212:10 pm -
2 stops16h 20m
Tue 10/274:10 pm -
2 stops28h 35m
Deal found 9/8![Multiple Airlines logo]()
$2,081
Best flights from St. Louis to BrusselsDiscover carefully curated flight deals from St. Louis to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from St. Louis to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:37 am -
1 stop16h 18m
Fri 12/1110:00 am -
2 stops37h 19m
Deal found 9/6![United Airlines logo]()
$730
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:00 pm -
1 stop12h 40m
Mon 10/510:20 am -
2 stops20h 02m
Deal found 9/8![Delta logo]()
$786
This United deal was found by Cheapflights users on 9/6. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:05 pm -
1 stop32h 00m
Sat 12/1210:00 am -
2 stops36h 26m
Deal found 9/6![Multiple Airlines logo]()
$790
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:19 pm -
1 stop10h 56m
Sat 12/1211:15 am -
1 stop18h 00m
Deal found 9/6![United Airlines logo]()
$801
This Gotogate deal was found by Cheapflights users on 9/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:10 pm -
1 stop12h 00m
Fri 10/307:00 am -
1 stop13h 45m
Deal found 9/8![Multiple Airlines logo]()
$950
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:10 pm -
2 stops18h 05m
Mon 10/261:45 pm -
2 stops35h 45m
Deal found 9/5![United Airlines logo]()
$922
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Fri 10/2312:10 pm -
1 stop12h 00m
Fri 10/3010:00 am -
2 stops35h 43m
Deal found 9/8![United Airlines logo]()
$946
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:10 pm -
2 stops24h 50m
Thu 10/2910:10 am -
1 stop17h 30m
Deal found 9/7![United Airlines logo]()
$963
This Mytrip deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:40 pm -
2 stops13h 45m
Tue 10/1310:00 pm -
2 stops27h 41m
Deal found 9/6![Multiple Airlines logo]()
$1,646
This Mytrip deal was found by Cheapflights users on 9/8. 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 10/112:40 pm -
2 stops18h 00m
Sat 10/176:50 pm -
2 stops25h 35m
Deal found 9/8![Multiple Airlines logo]()
$1,666
This Mytrip deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:05 pm -
2 stops15h 15m
Sat 12/123:35 pm -
2 stops29h 10m
Deal found 9/6![Multiple Airlines logo]()
$1,935
This Mytrip deal was found by Cheapflights users on 9/8. 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 10/2212:10 pm -
2 stops16h 20m
Tue 10/274:10 pm -
2 stops28h 35m
Deal found 9/8![Multiple Airlines logo]()
$2,081
Last-minute flights from St. Louis to BrusselsDiscover last-minute flight deals from St. Louis to Brussels. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Brussels. Data last updated September 9, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:05 am -
1 stop17h 35m
Mon 10/59:45 am -
1 stop15h 00m
Deal found 9/8![Delta logo]()
$766
This American Airlines deal was found by Cheapflights users on 9/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:18 pm -
2 stops20h 07m
Mon 10/510:50 am -
2 stops20h 29m
Deal found 9/8![American Airlines logo]()
$783
This Gotogate deal was found by Cheapflights users on 9/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:10 pm -
1 stop12h 00m
Tue 10/139:10 am -
1 stop16h 31m
Deal found 9/6![Multiple Airlines logo]()
$880
This Justfly.com deal was found by Cheapflights users on 9/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:10 pm -
2 stops24h 50m
Tue 10/139:10 am -
2 stops37h 33m
Deal found 9/6![Air Canada logo]()
$883
This Mytrip deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:40 pm -
2 stops13h 45m
Tue 10/1310:00 pm -
2 stops27h 41m
Deal found 9/6![Multiple Airlines logo]()
$1,646
This Mytrip deal was found by Cheapflights users on 9/8. 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 10/112:40 pm -
2 stops18h 00m
Sat 10/176:50 pm -
2 stops25h 35m
Deal found 9/8![Multiple Airlines logo]()
$1,666
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am -
1 stop18h 40m
Wed 10/2812:55 pm -
1 stop16h 59m
Deal found 9/9![Delta logo]()
$706
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:35 pm -
1 stop10h 40m
Wed 10/282:00 pm -
2 stops25h 29m
Deal found 9/9![Multiple Airlines logo]()
$719
This Mytrip deal was found by Cheapflights users on 9/8. 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 10/2212:10 pm -
2 stops16h 20m
Tue 10/274:10 pm -
2 stops28h 35m
Deal found 9/8![Multiple Airlines logo]()
$2,081
This Ticket deal was found by Cheapflights users on 9/9. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:00 pm -
1 stop13h 00m
Sun 11/812:55 pm -
1 stop34h 28m
Deal found 9/9![Multiple Airlines logo]()
$638
This Ticket deal was found by Cheapflights users on 9/9. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:35 am -
2 stops15h 00m
Sun 11/812:55 pm -
1 stop34h 28m
Deal found 9/9![KLM logo]()
$680
One-way flights from St. Louis to BrusselsSearch for one-way flight options from St. Louis to Brussels. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from St. Louis to Brussels. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:59 pm -
3 stops44h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$449
This Justfly.com deal was found by Cheapflights users on 9/5. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:05 pm -
2 stops39h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Air Canada logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:26 pm -
3 stops44h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$466
This TravelUp deal was found by Cheapflights users on 9/5. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:50 pm -
1 stop32h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Lufthansa logo]()
$473
This KLM deal was found by Cheapflights users on 9/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:47 am -
1 stop18h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![KLM logo]()
$514
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:05 pm -
3 stops41h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$649
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/199:50 am -
3 stops40h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$722
This Ovago deal was found by Cheapflights users on 9/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:58 pm -
1 stop30h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Brussels Airlines logo]()
$901
This BusinessClass deal was found by Cheapflights users on 9/5. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:21 pm -
2 stops35h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![British Airways logo]()
$910
Find flight deals from St. Louis to Brussels
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Brussels (BR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 9, 2026.
Round-trip from | $725 (Gotogate) |
|---|---|
One-way from | $449 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $829 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Brussels that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from St. Louis to Brussels that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBrussels
STL Lambert-St Louis - CRL Charleroi Brussels
STLCRL
Lambert-St Louis
Sat 10/31
7:59 pm-10:35 pm
3 stops44h 36m
Charleroi Brussels
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$449
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Sat 10/31
4:05 pm-1:15 pm
2 stops39h 10m
Brussels Bruxelles-National
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$464
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Sat 10/31
4:26 pm-7:10 pm
3 stops44h 44m
Brussels Bruxelles-National
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$466
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Sat 10/31
10:47 am-11:00 am
1 stop18h 13m
Brussels Bruxelles-National
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$514
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Sat 12/19
6:05 pm-6:25 pm
3 stops41h 20m
Brussels Bruxelles-National
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$649
St. LouisBrussels
STL Lambert-St Louis - CRL Charleroi Brussels
STLCRL
Lambert-St Louis
Sat 12/19
9:50 am-9:10 am
3 stops40h 20m
Charleroi Brussels
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$722
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Mon 12/7
9:37 am-8:55 am
1 stop16h 18m
Brussels Bruxelles-National
Fri 12/11
10:00 am-4:19 pm
2 stops37h 19m
$730
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Wed 9/30
12:00 pm-7:40 am
1 stop12h 40m
Brussels Bruxelles-National
Mon 10/5
10:20 am-11:22 pm
2 stops20h 02m
$786
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Mon 12/7
5:05 pm-8:05 am
1 stop32h 00m
Brussels Bruxelles-National
Sat 12/12
10:00 am-3:26 pm
2 stops36h 26m
$790
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Mon 12/7
1:19 pm-7:15 am
1 stop10h 56m
Brussels Bruxelles-National
Sat 12/12
11:15 am-10:15 pm
1 stop18h 00m
$801
Showing 1-10 of 20 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Brussels
Have a flexible travel schedule? Discover the best time to fly to Brussels from St. Louis with our price prediction graph.
STL-BR1
STL-BRU
STL-CRL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Brussels
STL-BR1
STL-BRU
STL-CRL
What is the cheapest month to book a flight from St. Louis to Brussels?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Brussels (average of $494). Flying from St. Louis to Brussels 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.
How much does it cost to fly round-trip from St. Louis to Brussels?
Airfare is below average for this route at the moment.
St. Louis to Brussels flights typically cost between $807 and $917 in November.The cheapest round-trip price found within the last 5 days was $725 on Multiple Airlines (Nov 2-Nov 11).
Reviews of airlines servicing Brussels
Get insights into the airlines that provide service to Brussels. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Brussels. Reviews last updated September 9, 2026.
Read through reviews of airlines operating flights from St. Louis to Brussels, such as United Airlines and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
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Top 2 airlines flying from St. Louis to Brussels
Discover the top 2 airlines that operate flights from St. Louis to Brussels. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$441 | Average$1,282 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$507 | Average$1,055 | FlexibilityNo cancel fee | On-time69% |