Direct (non-stop) flights from Denver (DEN) to Ontario (ONT)
Find comprehensive flight information, schedules, and booking details for direct flights from Denver (DEN) to Ontario (ONT). This popular route is operated by 3 airlines, offering multiple daily departures.• Flight Duration: 2h 13m - 2h 40m (average flight time)• Distance: 822 miles (1323 km) (air miles between airports)• Daily Flights: 7-12 flights (scheduled departures per day)
Denver (DEN)
Ontario (ONT)
FLIGHT TIME
2h 13m - 2h 40m
FLIGHT DISTANCE
822 miles (1323 km)
2h 18m - 2h 28m
07:50
22:45
822 miles (1323 km)
February
3 (Show)
60
Flight Schedule
December 2025
Airlines with direct flights from Denver (DEN) to Ontario (ONT)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 2h 13m - 2h 40m.
Pricing patterns: February typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 19:00, 22:00, 7:00, offering more flight options and potentially better connections.
Denver (DEN) - Ontario (ONT) flight price statistics
$184
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.
$88
Jan$39
Feb$39
Mar$46
Apr$237
May$158
Jun$136
Jul$136
Aug$136
Sep$288
Oct$439
Nov$466
DecRelated Information
Airports: DEN • ONT Airport
Airlines operating this route: Southwest Airlines (WN), Frontier Airlines, United Airlines
Frequently Asked Questions
How many flights operate from DEN to ONT?
There are 8 direct flights operating from DEN to ONT. Approximately 7-12 flights daily.
Which airlines operate flights from DEN to ONT?
3 airlines operate on this route: Southwest Airlines, Frontier Airlines, United Airlines.
How long is the flight from DEN to ONT?
The flight duration from DEN to ONT is approximately 2h 13m - 2h 40m.
What is the distance from DEN to ONT?
The distance from DEN to ONT is 822 miles (1323 km).
What is the flight time range for this route?
Flight times on this route range from 2h 18m - 2h 28m.
What are the earliest and latest flight departure times?
The earliest flight departs at 07:50 and the latest flight departs at 22:45.
What is the cheapest month to fly from DEN to ONT?
February is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 60 flights operate per week from DEN to ONT.
What types of aircraft operate on this route?
This route is served by Boeing 737MAX 8 Passenger, Airbus A320neo, Airbus A320, Boeing 737-800 (winglets) Passenger/BBJ2, Boeing 737-800 Passenger.
What is the average flight price from DEN to ONT?
The average flight price for a round-trip ticket from DEN to ONT is approximately $184 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from DEN to ONT for the lowest prices?
February is typically the cheapest month to fly from DEN to ONT. Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from DEN to ONT?
3 airlines offer direct flights from DEN to ONT, providing travelers with multiple options for scheduling and pricing.
How far is ONT from DEN?
The distance from DEN to ONT is 822 miles (1323 km). This is a long-haul flight route.
How long does it take to fly from DEN to ONT?
The flight time from DEN to ONT is approximately 2h 13m - 2h 40m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.