$152 Cheap Frontier Airlines flights Ontario (ONT) to St. Louis (STL)

$152 Cheap Frontier Airlines flights Ontario (ONT) to St. Louis (STL)

Prices were available within the past 7 days and start at $152 for one-way flights and $245 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Flights from Ontario (ONT) to St. Louis (STL)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United
Popular airline
Frontier Airlines
Distance
2467 km
Average flight time
5 hours 40 mins