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$618+ 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Feb 26 — Mar 51
Wed 2/26
Wed 3/5
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 February 21, 2025.

Round-trip from

$618
(United)

Popular in

June

Cheapest in

February

Average price

$690
From Lambert-St Louis to Belgium
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($306 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 21, 2025.

This United deal was found by Cheapflights users on 2/20. 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.
Wed 3/196:30 amSTL - BRU
2 stops19h 25mUnited Airlines
Wed 3/2610:00 amBRU - STL
2 stops32h 12mUnited Airlines
Deal found 2/20$618
This Lufthansa deal was found by Cheapflights users on 2/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/264:45 pmSTL - BRU
1 stop11h 05mLufthansa
Sat 4/269:30 amBRU - STL
1 stop35h 00mLufthansa
Deal found 2/20$832
This Scandinavian Airlines deal was found by Cheapflights users on 2/20. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2610:19 amSTL - BRU
3 stops25h 56mScandinavian Airlines
Sat 4/2610:20 amBRU - STL
2 stops20h 16mScandinavian Airlines
Deal found 2/20$1,013
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/244:38 pmSTL - BRU
2 stops18h 37mAer Lingus
Wed 2/2610:15 amBRU - STL
2 stops18h 47mAer Lingus
Deal found 2/20$1,335
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/243:50 pmSTL - BRU
3 stops34h 10mMultiple Airlines
Wed 2/2611:50 amBRU - STL
3 stops33h 52mMultiple Airlines
Deal found 2/20$1,410
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/194:26 pmSTL - BRU
2 stops15h 24mAmerican Airlines
Wed 3/2610:15 amBRU - STL
3 stops18h 03mAmerican Airlines
Deal found 2/20$1,666
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/243:50 pmSTL - CRL
2 stops15h 40mMultiple Airlines
Wed 2/2612:25 pmCRL - STL
3 stops30h 45mMultiple Airlines
Deal found 2/20$1,800

Find flights from St. Louis to Belgium within your budget

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 February 21, 2025.

Fly from

St. Louis

Fly to

Belgium

Route

Depart

Return

Price

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/19

6:30 am-7:55 am

2 stops19h 25m

Brussels Bruxelles-National

Wed 3/26

10:00 am-12:12 pm

2 stops32h 12m

$618

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/26

4:45 pm-9:50 am

1 stop11h 05m

Brussels Bruxelles-National

Sat 4/26

9:30 am-1:30 pm

1 stop35h 00m

$832

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/26

10:19 am-6:15 pm

3 stops25h 56m

Brussels Bruxelles-National

Sat 4/26

10:20 am-11:36 pm

2 stops20h 16m

$1,013

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/19

4:26 pm-1:50 pm

2 stops15h 24m

Brussels Bruxelles-National

Wed 3/26

10:15 am-10:18 pm

3 stops18h 03m

$1,666

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 7/11

1:10 pm-9:00 am

1 stop12h 50m

$2,354

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from St. Louis to Belgium

Get recent, data-driven insights about flights from St. Louis to Belgium including ideal travel times, pricing trends, and more.

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 $1,146). 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 February 21, 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.

Rainfall in Belgium by month

Plan your trip to Belgium by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belgium ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. August is typically the driest time to visit Belgium when rainfall is around 1.6 in.

Temperature in Belgium by month

Plan your trip to Belgium by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belgium, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 37.4 F).

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 February 21, 2025.
United Airlines
7.4
Good
8,759 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines
7.4
Good
8,759 reviews
United Airlines
7.4
Good
8,759 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Scandinavian Airlines
7.3
Good
1,325 reviews
United Airlines
7.4
Good
8,759 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,759 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Lufthansa
6.7
Okay
6,986 reviews
United Airlines
7.4
Good
8,759 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 $1,146). 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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Alternative routes for St. Louis to Belgium

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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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$578Average$1,092FlexibilityNo cancel feeOn-time69%
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