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$588+ Cheap flights from St. Louis (STL) to Belgium

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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap 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 3, 2025.

Round-trip from

$588
(Booking.com)

Popular in

June

Cheapest in

February

Average price

$1,283
From Lambert-St Louis to Belgium
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($248 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from St. Louis to Belgium

Cheapest flights from St. Louis to Belgium
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 3, 2025.

This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/285:18 pmSTL - BRU
2 stops55h 32mAir Canada
Wed 12/1010:00 amBRU - STL
2 stops33h 13mAir Canada
Deal found 7/1$588
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.
Fri 11/283:15 pmSTL - BRU
1 stop10h 40mUnited Airlines
Wed 12/1010:00 amBRU - STL
2 stops35h 20mUnited Airlines
Deal found 7/1$632
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.
Sat 8/167:55 amSTL - BRU
2 stops41h 05mMultiple Airlines
Sat 8/232:25 pmBRU - STL
1 stop30h 05mMultiple Airlines
Deal found 7/2$723
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/167:44 pmSTL - BRU
2 stops39h 16mBritish Airways
Sat 8/2310:05 pmBRU - STL
2 stops28h 24mBritish Airways
Deal found 7/2$744
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.
Fri 8/84:00 pmSTL - CRL
2 stops23h 45mMultiple Airlines
Sat 8/166:40 amCRL - STL
3 stops20h 20mMultiple Airlines
Deal found 7/1$1,111
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/239:27 amSTL - BRU
2 stops17h 13mDelta
Mon 7/286:10 amBRU - STL
2 stops21h 26mDelta
Deal found 7/2$1,235
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/33:41 pmSTL - BRU
2 stops21h 09mScandinavian Airlines
Fri 8/810:20 amBRU - STL
2 stops20h 33mScandinavian Airlines
Deal found 7/1$1,371
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.
Tue 7/810:46 amSTL - BRU
1 stop14h 54mKLM
Wed 7/166:10 amBRU - STL
2 stops15h 27mKLM
Deal found 7/1$1,911
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/31:04 pmSTL - BRU
1 stop11h 11mLufthansa
Fri 8/88:20 amBRU - STL
1 stop12h 10mLufthansa
Deal found 7/1$1,949
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/58:00 amSTL - BRU
2 stops30h 20mTurkish Airlines
Mon 7/76:50 pmBRU - STL
2 stops34h 55mTurkish Airlines
Deal found 7/2$2,041
This AranGrant 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/91:04 pmSTL - BRU
2 stops14h 56mBrussels Airlines
Wed 7/1612:00 pmBRU - STL
1 stop14h 00mBrussels Airlines
Deal found 7/3$2,086
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/98:37 amSTL - BRU
2 stops19h 48mIberia
Thu 7/177:05 amBRU - STL
2 stops20h 19mIberia
Deal found 7/2$2,149

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 3, 2025.
Use the filters below to find and compare flights from St. Louis to Belgium that are best for you.

Fly from

St. Louis

Fly to

Belgium

Route

Depart

Return

Price

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 11/28

5:18 pm-7:50 am

2 stops55h 32m

Brussels Bruxelles-National

Wed 12/10

10:00 am-12:13 pm

2 stops33h 13m

$588

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 11/28

3:15 pm-8:55 am

1 stop10h 40m

Brussels Bruxelles-National

Wed 12/10

10:00 am-2:20 pm

2 stops35h 20m

$632

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 8/16

7:55 am-8:00 am

2 stops41h 05m

Brussels Bruxelles-National

Sat 8/23

2:25 pm-1:30 pm

1 stop30h 05m

$723

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 8/16

7:44 pm-6:00 pm

2 stops39h 16m

Brussels Bruxelles-National

Sat 8/23

10:05 pm-7:29 pm

2 stops28h 24m

$744

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Fri 8/8

4:00 pm-10:45 pm

2 stops23h 45m

Charleroi Brussels

Sat 8/16

6:40 am-8:00 pm

3 stops20h 20m

$1,111

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 7/23

9:27 am-9:40 am

2 stops17h 13m

Brussels Bruxelles-National

Mon 7/28

6:10 am-8:36 pm

2 stops21h 26m

$1,235

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/3

3:41 pm-7:50 pm

2 stops21h 09m

Brussels Bruxelles-National

Fri 8/8

10:20 am-11:53 pm

2 stops20h 33m

$1,371

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/3

1:04 pm-7:15 am

1 stop11h 11m

Brussels Bruxelles-National

Fri 8/8

8:20 am-1:30 pm

1 stop12h 10m

$1,949

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 7/8

11:24 am-7:45 am

1 stop13h 21m

$1,157

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 7/8

1:20 pm-9:45 am

2 stops13h 25m

$1,295

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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.
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

What is the cheapest month to book a flight from St. Louis to Belgium?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Belgium (average of $614). Flying from St. Louis to Belgium in June is currently the most expensive (average of $1,079). 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.

What is the cheapest time of day to fly from STL to BE?

Find hourly flight availability from St. Louis to Belgium. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

When flying from St. Louis to Belgium, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 3, 2025.
Read reviews from past customers who have flown Delta, Austrian Airlines, and United Airlines 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.
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
809 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Scandinavian Airlines
7.3
Good
1,416 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,681 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What airport do you fly from for flights from St. Louis to Belgium?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to Belgium from St. Louis.

  • Can I find deals for flights from St. Louis to Belgium that include hotel bookings?

    Yes. In addition to deals on St. Louis to Belgium flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Belgium?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Belgium.

  • Can I find deals for business class flights from St. Louis to Belgium?

    Yes. Cheapflights offers flight deals from St. Louis to Belgium by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Belgium?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Belgium (average of $614). Flying from St. Louis to Belgium in June is currently the most expensive (average of $1,079). 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.

See more FAQs

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Top airline flying from St. Louis to Belgium

Discover the top airline 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$628Average$909FlexibilityNo cancel feeOn-time69%

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