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$128+ Cheap flights from St. Louis (STL) to Belize

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BZE
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from St. Louis to Belize

Keep the following information in mind while searching for St. Louis to Belize flight deals. Data was last updated July 29, 2025.

Round-trip from

$342
(American Airlines)

One-way from

$128
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$545
From Lambert-St Louis to Belize
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One-way flight from Lambert-St Louis to Belize
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Highest demand for flights based on searches. 1% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from St. Louis to Belize

Cheapest flights from St. Louis to Belize
Explore the most affordable flight options available from St. Louis to Belize. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. 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.
Mon 10/275:11 amSTL - BZE
1 stop10h 09mAmerican Airlines
Tue 11/41:12 pmBZE - STL
1 stop9h 46mAmerican Airlines
Deal found 7/27$342
This Delta deal was found by Cheapflights users on 7/28. 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.
Thu 10/26:01 amSTL - BZE
1 stop6h 40mDelta
Thu 10/912:42 pmBZE - STL
1 stop9h 59mDelta
Deal found 7/28$362
This deal was found by Cheapflights users on 7/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:15 amSTL - BZE
1 stop8h 18mUnited Airlines
Wed 8/272:35 pmBZE - STL
1 stop6h 41mUnited Airlines
Deal found 7/29$452

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Belize 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 29, 2025.
Use the filters below to find and compare flights from St. Louis to Belize that are best for you.

Fly from

St. Louis

Fly to

Belize

Route

Depart

Return

Price

St. LouisBelize City

STL - BZE

STLBZE

Lambert-St Louis

Mon 10/27

5:11 am-2:20 pm

1 stop10h 09m

Belize City Philip S.W.Goldson

Tue 11/4

1:12 pm-10:58 pm

1 stop9h 46m

$342

St. LouisBelize City

STL - BZE

STLBZE

Lambert-St Louis

Thu 10/2

6:01 am-11:41 am

1 stop6h 40m

Belize City Philip S.W.Goldson

Thu 10/9

12:42 pm-11:41 pm

1 stop9h 59m

$362

St. LouisBelize City

STL - BZE

STLBZE

Lambert-St Louis

Wed 8/20

6:15 am-1:33 pm

1 stop8h 18m

Belize City Philip S.W.Goldson

Wed 8/27

2:35 pm-10:16 pm

1 stop6h 41m

$452

St. LouisBelize City

STL - BZE

STLBZE

Lambert-St Louis

Mon 9/15

6:15 am-1:33 pm

1 stop8h 18m

$128

St. LouisBelize City

STL - BZE

STLBZE

Lambert-St Louis

Sun 8/3

5:48 pm-10:26 am

2 stops17h 38m

$194

St. LouisBelize City

STL - BZE

STLBZE

Lambert-St Louis

Mon 9/15

6:00 am-4:28 pm

3 stops35h 28m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from St. Louis to Belize

Have a flexible travel schedule? Discover the best time to fly to Belize 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 Belize

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Belize (average of $363). Flying from St. Louis to Belize in March is currently the most expensive (average of $653). 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.

Reviews of airlines servicing Belize

Get insights into the airlines that provide service to Belize. 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 Belize. Reviews last updated July 29, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Belize have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

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
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

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
8,899 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

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 Belize. 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 Belize?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Belize. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Belize (average of $363). Flying from St. Louis to Belize in March is currently the most expensive (average of $653). 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 Belize

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from St. Louis to Belize

Discover the top 4 airlines that operate flights from St. Louis to Belize. 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$314Average$463FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$357Average$512FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$363Average$508FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$473Average$488FlexibilityNo cancel feeOn-time63%

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