Frontier Airlines flights from STL to DEN
Find comprehensive Frontier Airlines flight information, schedules, and booking details for direct flights from STL to DEN. Frontier Airlines operates 7-15 flights daily flights on this route.• Flight Duration: 2h 10m - 2h 39m (average flight time)• Distance: 772 miles (1242 km) (air miles between airports)• Daily Flights: 7-15 flights (scheduled departures per day)
STL
DEN
FLIGHT TIME
2h 10m - 2h 39m
FLIGHT DISTANCE
772 miles (1242 km)
2h 34m - 2h 34m
19:43
19:43
772 miles (1242 km)
March
1 (Show)
77
Frontier Airlines Flight Schedule from STL to DEN
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
F94567 |  Frontier Airlines | 19:43 | 21:17:00 | Airbus A321neo |
Frontier Airlines Monthly Flight Calendar
December 2025
Route Insights
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 19:00, offering more flight options and potentially better connections.
STL - DEN flight price statistics
$175
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$61
Jan$48
Feb$39
Mar$93
Apr$39
May$180
Jun$190
Jul$241
Aug$230
Sep$326
Oct$326
Nov$326
DecFrontier Airlines Terminal Information
Terminal information for Frontier Airlines on this route is currently being updated. Please check back soon or contact the airports directly for terminal details.
Frequently Asked Questions about Frontier Airlines Flights
How many Frontier Airlines flights operate from STL to DEN?
Frontier Airlines operates 1 flight from STL to DEN.
What city does DEN airport serve?
DEN airport serves Denver.
How long is the Frontier Airlines flight from STL to DEN?
The flight duration is approximately 2h 10m - 2h 39m.
What is the distance from STL to DEN?
The distance is 772 miles (1242 km).
What aircraft does Frontier Airlines use on this route?
Frontier Airlines uses Airbus A321neo on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: Southwest Airlines, United Airlines.
What is the cheapest month to fly Frontier Airlines from STL to DEN?
March is typically the cheapest month to fly Frontier Airlines on this route.
What is the average price for a Frontier Airlines flight from STL to DEN?
The average price for a round-trip Frontier Airlines flight on this route is approximately $175. Prices can vary based on booking time and demand.
How many Frontier Airlines flights operate per week on this route?
Frontier Airlines operates approximately 77 flights per week from STL to DEN.