$341 Find Cheap Flights from St. Louis to Brussels - Compare and Save

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Everything you should know

Cheapest round-trip
$727
Typical prices: $641-$1,399
United Airlines
Fri 12/7Tue 12/11
STL - BRU • 2 stops
Cheapest one-way
$341
Typical prices: $490-$717
Air Canada
Wed 12/5
STL - BRU • 2 stops
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Brussels. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
February
Cheapest • 47% price drop
March
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Frankfurt am Main (FRA)
Cheapest • Avg $909 (round-trip)
Chicago O'Hare Intl (ORD)
Shortest trip • 12h 23m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from St. Louis to Brussels (STL-BRU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Brussels

Mon, Sep 21 - Wed, Sep 30
Multiple Airlines Logo
12:10 pm - 7:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$767Multiple Airlines
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
12:10 pm - 7:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$767Air Canada
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
12:10 pm - 1:15 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
18h 05m2 stops Montreal Pierre Elliott Trudeau Intl London Heathrow
Air Canada Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$771Air Canada
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
12:10 pm - 7:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:10 am - 8:20 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
18h 10m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
$773Air Canada
Mon, Sep 21 - Wed, Sep 30
United Airlines Logo
8:00 am - 9:00 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
18h 00m1 stop Chicago O'Hare Intl
United Airlines Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$800United Airlines
Mon, Sep 21 - Wed, Sep 30
United Airlines Logo
8:00 am - 9:00 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
18h 00m1 stop Chicago O'Hare Intl
United Airlines Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$801United Airlines
Mon, Sep 21 - Wed, Sep 30
United Airlines Logo
12:59 pm - 9:00 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
13h 01m1 stop Chicago O'Hare Intl
United Airlines Logo
12:00 pm - 7:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
14h 41m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
$802United Airlines
Sun, Dec 13 - Sun, Dec 27
Lufthansa Logo
3:40 pm - 8:20 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
21h 40m1 stop Frankfurt am Main
Lufthansa Logo
7:00 am - 1:45 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
$2,228Lufthansa
Sun, Dec 13 - Sun, Dec 27
Lufthansa Logo
3:40 pm - 10:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
11h 30m1 stop Frankfurt am Main
Lufthansa Logo
6:45 am - 9:22 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
21h 37m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl
$2,230Lufthansa
Sun, Dec 13 - Sun, Dec 27
Lufthansa Logo
3:40 pm - 8:20 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
21h 40m1 stop Frankfurt am Main
Lufthansa Logo
7:00 am - 1:45 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
$2,278Lufthansa
Booking Insights

Price, demand and travel trends for St. Louis to Brussels flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Brussels with more confidence.

How much is a round-trip flight from St. Louis to Brussels?

Round-trip flights from St. Louis to Brussels start at $727. Prices are typical for this route right now, with typical round-trip fares ranging from $641 to $1,399. The lowest price found in the past 5 days was $727 on United Airlines.

What's the cheapest day of the week to fly from St. Louis to Brussels?

Thursday is the cheapest day of the week to fly from St. Louis to Brussels, it is 31% cheaper than the average day. Tuesday is the most expensive day with flight prices 53% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from St. Louis to Brussels?

  • February is the cheapest month to fly from St. Louis to Brussels at $516 round-trip.
  • December ($2,200) and November ($1,506) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 326% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for St. Louis to Brussels flights

Low season

June

Cheapest flight

$341
Best time to beat the crowds but there is an average 40% increase in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from St. Louis to Brussels Bruxelles-National Airport

When to book flights from St. Louis to Brussels

Are your dates flexible? Find out the best times to travel from St. Louis to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Brussels flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from St. Louis to Brussels?

    Flights from St. Louis to Brussels usually depart from Lambert-St Louis (STL) and may arrive at several airports in Brussels area, including Brussels Bruxelles-National (BRU) and Charleroi Brussels (CRL).

  • What cabin classes can I book on flights from St. Louis to Brussels?

    Only Economy Class is available on flights from St. Louis to Brussels.

  • Which airports do connecting flights from St. Louis to Brussels pass through?

    One-stop flights from St. Louis to Brussels most commonly connect through:

    • Chicago O'Hare Intl (ORD) - 59% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 19% of one-stop connections
    • Frankfurt am Main (FRA) - 19% of one-stop connections
    • Washington, D.C. Dulles Intl (IAD) - 3% of one-stop connections

    Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from St. Louis to Brussels?

    Yes. Being flexible with your travel dates can save you up to 55% on the St. Louis to Brussels route. Thursday is the cheapest departure day at $685 round-trip on average, while Tuesday is the most expensive at $1,506, a difference of $821. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Brussels?

    Some of the most popular sights in Brussels are Grand Place, Brussels Central Railway Station and Bruxelles-Midi Station. These are among the most viewed places in Brussels on KAYAK.

  • How long is a flight from St. Louis to Brussels?

    A nonstop flight from St. Louis to Brussels takes 0h 00m, covering 4,390 miles.

  • What are the earliest and latest flights from St. Louis to Brussels?

    These are the earliest and latest flight times available from St. Louis to Brussels:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

  • Do I need a passport to fly from St. Louis to Brussels?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from St. Louis to Brussels looking right now?

    One-way fares from St. Louis to Brussels are currently lower than usual. Average one-way flight prices are about $460, which is 25% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from St. Louis to Brussels?

    Flying via Frankfurt am Main (FRA) gives the shortest average 1-stop total travel time at 11h 53m, compared with 12h 23m via Chicago O'Hare Intl (ORD) and 12h 42m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between St. Louis and Brussels?

    Brussels is 7 hours ahead of St. Louis (Central European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available in Brussels?

    Since Brussels is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Brussels Bruxelles-National Airport (BRU) — daily rates from around $20:

    · Hertz
    · Alamo
    · keddy by Europcar
    · Europcar
    · Sixt

    Near Charleroi Brussels Airport (CRL) — daily rates from around $22:

    · keddy by Europcar
    · Europcar
    · Hertz
    · Sixt
    · Thrifty

  • How much should I expect to pay for a St. Louis to Brussels flight?

    Round-trip flights from St. Louis to Brussels range from $641 to $1,399, with an average of $981 over the past 12 months. Anything below $641 counts as a good deal.

Your guide to booking St. Louis to Brussels flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Tuesday. On this route, Thursday flights average $685 - about $821 less than Tuesday (55% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Brussels trip for February. Fares historically average $516 round-trip in that month - typically $1,684 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Brussels Bruxelles-National Airport.
    - NH Brussels Airport
    - Crowne Plaza Brussels Airport By IHG

Everything you need to know for your flight from St. Louis to Brussels

Information on your arrival and departure airports

St. Louis (STL)