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

$44 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $109 and $117, respectively.

In terms of precipitation, rainfall in Clearwater ranges from 1.6 - 7.8 inches per month. August is typically the wettest month, when rainfall can reach 7.8 in. November is typically the driest time to visit Clearwater when rainfall is around 1.6 in.

If weather is an important factor for your trip to Clearwater, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 60.8 F).

What are the cheapest flights from St. Louis to Clearwater?

Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Lambert-St Louis - Tampa) can be booked for $94 on average, our data indicates $273 when flying from St. Louis to Clearwater.

What are the most popular airlines that fly from St. Louis to Clearwater?

Before booking your flight from St. Louis to Clearwater check out the most popular airlines for this route: Southwest, Frontier or American Airlines.

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

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Clearwater. On average, Lambert-St Louis has 1 outbound flight to Clearwater per day from 7 airlines. 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 Clearwater that include hotel bookings?

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

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

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

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

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

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Cheapflights Tip: The best prices from Lambert-St Louis to Clearwater are usually found in December or October, booked 54 days in advance, depart on a Saturday or Wednesday and return on a Friday

Find flight deals from St. Louis to Clearwater

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	June
Cheapest in	December
Average price	$292

Provider with most accurate pricing for Lambert-St Louis-Tampa flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Tampa flights.

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Highest demand for flights based on searches. 19% potential increase in price ($87 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Everything you need to know about your flight from St. Louis to Clearwater

What is the cheapest time of day to fly from STL to CL9?

One of the essential ways to save on airfare from St. Louis to Clearwater is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 18% on airfare.

What is the cheapest day to fly from St. Louis to Clearwater?

Travelers seeking maximum savings on their St. Louis to Clearwater flight should consider departing on Saturday afternoons when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Clearwater

Get a feel of what it's like to fly with Southwest,Delta, andAllegiant Air from St. Louis to Clearwater by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Southwest

7.9

Good

4,215 reviews

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Delta

7.8

Good

8,627 reviews

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Allegiant Air

7.3

Good

679 reviews

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

American Airlines

7.0

Good

12,128 reviews

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Frontier

5.6

Fair

2,563 reviews

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

What airport do you fly from for flights from St. Louis to Clearwater?
Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Clearwater. On average, Lambert-St Louis has 1 outbound flight to Clearwater per day from 7 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
What are the cheapest airlines to fly from St. Louis to Clearwater one-way?
$44 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $109 and $117, respectively.
What are the cheapest flights from St. Louis to Clearwater?
Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Lambert-St Louis - Tampa) can be booked for $94 on average, our data indicates $273 when flying from St. Louis to Clearwater.
Can I find deals for flights from St. Louis to Clearwater that include hotel bookings?
Yes. In addition to deals on St. Louis to Clearwater flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Clearwater?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Clearwater.
Can I find deals for business class flights from St. Louis to Clearwater?
Yes. Cheapflights offers flight deals from St. Louis to Clearwater by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 7 airlines flying from St. Louis to Clearwater

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$58	Average$206	FlexibilityNo cancel fee	On-time62%
Allegiant Air	Cheapest$126	Average$274	FlexibilityNo cancel fee	On-time88%
United Airlines	Cheapest$167	Average$378	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$175	Average$372	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$199	Average$375	FlexibilityNo cancel fee	On-time71%
JetBlue	Cheapest$222	Average$344	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$249	Average$430	FlexibilityNo cancel fee	On-time63%

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Cheap flights from St. Louis (STL) to Clearwater, FL

Find cheap flights from St. Louis to Clearwater with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from St. Louis to Clearwater

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Popular in

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Cheapflights Insights

What is the cheapest time of day to fly from STL to CL9?

One of the essential ways to save on airfare from St. Louis to Clearwater is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 18% on airfare.

What is the cheapest day to fly from St. Louis to Clearwater?

Travelers seeking maximum savings on their St. Louis to Clearwater flight should consider departing on Saturday afternoons when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Clearwater

Get a feel of what it's like to fly with Southwest,Delta, andAllegiant Air from St. Louis to Clearwater by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

What are the cheapest flights from St. Louis to Clearwater?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Clearwater

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Complete your trip

Complete your trip to Clearwater by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Louis to Clearwater by cabin class

Find flights from St. Louis to Clearwater, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Louis and Clearwater flights

Browse other St. Louis and Clearwater flight options. Last updated on October 3, 2026.

Other flights from St. Louis

Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on October 3, 2026.

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Top 7 airlines flying from St. Louis to Clearwater

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