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$479+ Cheap flights from St. Louis (STL) to Brussels

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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Mar 9 — Mar 161
Sun 3/9
Sun 3/16
1 adult, Economy
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Cheap 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 March 4, 2025.

Round-trip from

$605
(Flighttix)

One-way from

$479
(FlightHub)

Popular in

June

Cheapest in

February

Average price

$848
From Lambert-St Louis to Brussels
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One-way flight from Lambert-St Louis to Brussels
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Highest demand for flights based on searches. 23% potential increase in price ($308 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from St. Louis to Brussels

Cheapest flights from St. Louis to Brussels
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 March 4, 2025.

This Flighttix deal was found by Cheapflights users on 3/4. 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 3/243:50 pmSTL - BRU
2 stops15h 20mAir Canada
Wed 4/29:40 amBRU - STL
1 stop12h 09mAir Canada
Deal found 3/4$605
This Flighttix deal was found by Cheapflights users on 3/4. 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 3/243:50 pmSTL - BRU
2 stops15h 20mMultiple Airlines
Wed 4/27:00 amBRU - STL
2 stops15h 47mMultiple Airlines
Deal found 3/4$621
This United Airlines deal was found by Cheapflights users on 3/4. 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 3/2411:05 amSTL - BRU
1 stop14h 50mUnited Airlines
Wed 4/210:15 amBRU - STL
1 stop16h 49mUnited Airlines
Deal found 3/4$636
This American Airlines deal was found by Cheapflights users on 3/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/54:20 pmSTL - BRU
2 stops14h 30mAmerican Airlines
Tue 3/1110:15 amBRU - STL
2 stops16h 26mAmerican Airlines
Deal found 3/2$706
This Justfly.com deal was found by Cheapflights users on 3/2. 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.
Tue 3/43:10 pmSTL - BRU
2 stops15h 25mBritish Airways
Tue 3/1111:55 amBRU - STL
2 stops16h 23mBritish Airways
Deal found 3/2$747
This Delta deal was found by Cheapflights users on 3/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2610:19 amSTL - BRU
2 stops16h 41mDelta
Sat 4/2610:45 amBRU - STL
2 stops17h 51mDelta
Deal found 3/3$790
This SmartFares deal was found by Cheapflights users on 3/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/141:09 pmSTL - BRU
2 stops37h 31mScandinavian Airlines
Sun 5/182:55 pmBRU - STL
2 stops39h 43mScandinavian Airlines
Deal found 3/3$795
This Mytrip deal was found by Cheapflights users on 3/4. 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 3/173:50 pmSTL - CRL
3 stops21h 40mMultiple Airlines
Sun 3/232:35 pmCRL - STL
3 stops33h 24mMultiple Airlines
Deal found 3/4$1,988
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/53:45 pmSTL - BRU
1 stop13h 45mLufthansa
Thu 3/139:30 amBRU - STL
2 stops20h 03mLufthansa
Deal found 3/2$2,729

Find flights from St. Louis to Brussels within your budget

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 2,558,603 searches. Data last updated March 4, 2025.

Fly from

St. Louis

Fly to

Brussels

Route

Depart

Return

Price

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 3/24

3:50 pm-1:10 pm

2 stops15h 20m

Brussels Bruxelles-National

Wed 4/2

9:40 am-2:49 pm

1 stop12h 09m

$605

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 3/24

3:50 pm-1:10 pm

2 stops15h 20m

Brussels Bruxelles-National

Wed 4/2

7:00 am-3:47 pm

2 stops15h 47m

$621

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 3/24

11:05 am-7:55 am

1 stop14h 50m

Brussels Bruxelles-National

Wed 4/2

10:15 am-8:04 pm

1 stop16h 49m

$636

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/26

10:19 am-9:00 am

2 stops16h 41m

Brussels Bruxelles-National

Sat 4/26

10:45 am-9:36 pm

2 stops17h 51m

$790

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 5/14

1:09 pm-9:40 am

2 stops37h 31m

Brussels Bruxelles-National

Sun 5/18

2:55 pm-11:38 pm

2 stops39h 43m

$795

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Mon 3/17

3:50 pm-7:30 pm

3 stops21h 40m

Charleroi Brussels

Sun 3/23

2:35 pm-5:59 pm

3 stops33h 24m

$1,988

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 8/30

4:23 pm-2:20 pm

2 stops14h 57m

Brussels Bruxelles-National

Fri 9/12

10:20 am-8:21 pm

3 stops17h 01m

$2,514

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/31

1:30 pm-7:50 pm

2 stops23h 20m

$479

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/31

1:00 pm-3:20 pm

3 stops19h 20m

$524

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/31

4:05 pm-7:50 am

1 stop32h 45m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 11 results
1
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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.
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 Brussels

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

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to Brussels (average of $614). Flying from St. Louis to Brussels 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 BRU?

Find hourly flight availability from St. Louis to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 4, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 32% on flights from St. Louis to Brussels by exploring options for tickets in the afternoon.

Rainfall in Brussels by month

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

In terms of precipitation, rainfall in Brussels 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 Brussels when rainfall is around 1.6 in.

Temperature in Brussels by month

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

If weather is an important factor for your trip to Brussels, 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 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 March 4, 2025.
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,061 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,678 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Scandinavian Airlines
7.3
Good
1,314 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada
7.0
Good
8,830 reviews
Delta
8.0
Very good
8,061 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Brussels. 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 Brussels?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Brussels. On average, Lambert-St Louis has 0 outbound flights to Brussels per day from 1 airline. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the cheapest airlines flying from St. Louis to Brussels round-trip?

    Currently priced at $605, Air Canada will fly you from St. Louis to Brussels and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $636 and $790, respectively. These flights start at 41% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Brussels one-way?

    The cheapest airlines for a one-way flight from St. Louis to Brussels are Scandinavian Airlines ($479), United Airlines ($610), and Lufthansa ($2,068).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Brussels 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 Brussels?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Brussels (average of $614). Flying from St. Louis to Brussels 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Brussels

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Bruxelles-National flights
Kansas City to Bruxelles-National flights
St. Louis to Charleroi Brussels flights
Springfield to Bruxelles-National flights

Top airline flying from St. Louis to Brussels

Discover the top airline 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 2,558,603 searches. Data last updated March 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$578Average$1,049FlexibilityNo cancel feeOn-time69%
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