Cheap Flights to St. Louis (STL)

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Cheap Flights to St. Louis (STL)

Looking for a cheap last-minute deal or the best round-trip flight to St Louis? Find the biggest savings on one-way and round-trip tickets right here.

Flight deals to St Louis

Frontier Airlines

Denver
2025-05-03

St Louis

USD 44

One-way F9 Nonstop Economy fare found on 2025-03-09

Frontier Airlines

Denver
2025-05-03

St Louis

USD 44

One-way F9 Nonstop Economy fare found on 2025-03-09

Frontier Airlines

Denver
2025-05-03

St Louis

USD 44

One-way F9 Nonstop Economy fare found on 2025-03-09

Frontier Airlines

Denver
2025-05-03

St Louis

USD 44

One-way F9 Nonstop Economy fare found on 2025-03-09

Frontier Airlines

Chicago
2025-04-02

St Louis

USD 46

One-way F9 Economy fare found on 2025-03-26

Frontier Airlines

Chicago
2025-04-02

St Louis

USD 46

One-way F9 Economy fare found on 2025-03-26

Frontier Airlines

Orlando
2025-04-01

St Louis

USD 50

One-way F9 Nonstop Economy fare found on 2025-03-18

Frontier Airlines

Orlando
2025-04-01

St Louis

USD 50

One-way F9 Nonstop Economy fare found on 2025-03-18

Spirit Airlines

Fort Lauderdale
2025-04-20

St Louis

USD 51

One-way NK Nonstop Economy fare found on 2025-04-01

Spirit Airlines

Fort Myers
2025-10-23

St Louis

USD 54

One-way NK Economy fare found on 2025-04-07

*Prices are per person and are for e-tickets and include all taxes & fees in USD.

*Fareleaders always attempts to get accurate pricing, however, prices are not guaranteed.

*Fareleaders is not seller, we aggregate tones of data for you from other online travel agencies and external sources.

Facts to know while booking flights to St Louis (STL)

Which airlines fly to St Louis?

Sun Country Airlines, Southwest Airlines, Southern Airways, Spirit Airlines, Frontier Airlines, Delta Airlines Airlines flying the most to St Louis (STL)

What is the cheapest flight to STL Airport?

In the past couple of days, the cheapest tickets to STL were found on Frontier Airlines : USD 44

What are the most popular origin to St Louis (STL)?

Travelers frequently travel from El Paso, Houston, New York, Atlanta, Denver, Las Vegas, Orlando, Chicago, Washington, Fort Lauderdale, Little Rock, Chicago, Minneapolis, Philadelphia, Fort Myers, San Diego, Tampa, Grand Rapids to St Louis (STL)