Frontier Airlines Ontario to Denver Flights

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Cheapflightsplus.com will find cheap Frontier Airlines flights from Ontario to Denver. Compare airline ticket prices and book air tickets starting from $43 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Frontier Airlines, arrivals and departure details below.

Find Cheap Airfare Ontario (CA) — Denver (CO) by Frontier Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in january: one-way - $43, two-way – $74.

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Cheap Flights from Ontario to Denver by Frontier Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by Frontier Airlines, their prices start from $43. The fastest nonstop flight takes 2h 21m. The fastest connecting flight — 3h 54m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $43 Find flight	0:49 am Ontario Ontario Int.	4:10 am Denver Denver International	2h 21m	Frontier Airlines	F91500
from $55 Find flight	7:59 pm Ontario Ontario Int.	0:53 am+1 день Denver Denver International	3h 54m layover 0h 43m - Las Vegas	Frontier Airlines	F94206 F94612
from $56 Find flight	8:04 am Ontario Ontario Int.	6:40 pm Denver Denver International	9h 36m layover 6h 22m - Las Vegas	Frontier Airlines	F91358 F92430
from $66 Find flight	4:48 pm Ontario Ontario Int.	0:50 am+1 день Denver Denver International	7h 2m layover 1h 21m - Houston	Frontier Airlines	F93132 F94855
from $76 Find flight	12:34 pm Ontario Ontario Int.	6:40 pm Denver Denver International	5h 6m layover 1h 52m - Las Vegas	Frontier Airlines	F92232 F92430
from $77 Find flight	6:57 am Ontario Ontario Int.	4:21 pm Denver Denver International	8h 24m layover 2h 47m - Dallas	Frontier Airlines	F91406 F92631
from $82 Find flight	10:59 pm Ontario Ontario Int.	8:43 am+1 день Denver Denver International	8h 44m layover 5h 18m - Phoenix	Frontier Airlines	F92404 F91376
from $87 Find flight	5:56 pm Ontario Ontario Int.	11:47 pm Denver Denver International	4h 51m layover 1h 24m - Salt Lake City	Frontier Airlines	F91122 F94252
from $175 Find flight	12:28 pm Ontario Ontario Int.	1:06 am+1 день Denver Denver International	11h 38m layover 8h 11m - Las Vegas	Frontier Airlines	F91358 F94968

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 01/15/2025

Frontier Airlines Flight Schedule Ontario to Denver

Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.

Departure	Flight Details	Flight Time	Price
0:49 am — 4:10 am	0:49 am — 4:10 am F91500 Frontier Airlines Ontario — Denver	2h 21m	Find flight from$43
10:59 pm — 8:43 am +1 day	10:59 pm — 1:27 am F92404 Frontier Airlines Ontario — Phoenix 5h 18m stop 6:45 am — 8:43 am F91376 Frontier Airlines Phoenix — Denver	8h 44m including layover	Find flight from$82
12:28 pm — 1:06 am +1 day	11:46 am — 12:55 pm F91358 Frontier Airlines Ontario — Las Vegas 8h 11m stop 9:53 pm — 0:49 am F94968 Frontier Airlines Las Vegas — Denver	11h 38m including layover	Find flight from$175
12:34 pm — 6:40 pm	5:26 pm — 6:36 pm F92232 Frontier Airlines Ontario — Las Vegas 1h 52m stop 0:59 am — 3:59 am F92430 Frontier Airlines Las Vegas — Denver	5h 6m including layover	Find flight from$76
3:52 pm — 9:27 am +1 day	11:46 am — 12:56 pm F92232 Frontier Airlines Ontario — Las Vegas 13h 20m stop 6:25 am — 9:27 am F93844 Frontier Airlines Las Vegas — Denver	16h 35m including layover	Find flight from$82
4:48 pm — 0:50 am +1 day	1:45 pm — 6:58 pm F93132 Frontier Airlines Ontario — Houston 1h 21m stop 8:20 pm — 10:00 pm F94855 Frontier Airlines Houston — Denver	7h 2m including layover	Find flight from$66
5:30 pm — 10:54 pm	5:26 pm — 6:36 pm F92232 Frontier Airlines Ontario — Las Vegas 1h 5m stop 8:33 pm — 11:36 pm F94612 Frontier Airlines Las Vegas — Denver	4h 24m including layover	Find flight from$77
5:30 pm — 1:06 am +1 day	3:56 pm — 5:09 pm F92232 Frontier Airlines Ontario — Las Vegas 3h 17m stop 9:36 pm — 0:32 am F94968 Frontier Airlines Las Vegas — Denver	6h 36m including layover	Find flight from$77
5:56 pm — 11:47 pm	5:56 pm — 8:41 pm F91122 Frontier Airlines Ontario — Salt Lake City 1h 24m stop 10:05 pm — 11:47 pm F94252 Frontier Airlines Salt Lake City — Denver	4h 51m including layover	Find flight from$87
6:57 am — 4:21 pm	6:30 am — 11:32 am F91406 Frontier Airlines Ontario — Dallas 2h 47m stop 3:42 pm — 4:57 pm F92631 Frontier Airlines Dallas — Denver	8h 24m including layover	Find flight from$77
7:59 pm — 0:53 am +1 day	10:58 pm — 11:59 pm F94206 Frontier Airlines Ontario — Las Vegas 43m stop 8:44 pm — 11:48 pm F94612 Frontier Airlines Las Vegas — Denver	3h 54m including layover	Find flight from$55
8:04 am — 6:40 pm	1:17 pm — 2:29 pm F91358 Frontier Airlines Ontario — Las Vegas 6h 22m stop 0:59 am — 3:59 am F92430 Frontier Airlines Las Vegas — Denver	9h 36m including layover	Find flight from$56

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 01/15/2025

Flight Information

There is 1 flight by Frontier Airlines from Ontario to Denver every week with departures from Ontario Int. and International Heliport. All flights arrive at Denver International and Arapahoe Co.

Departures start from 0:49 am to 8:04 am. Nonstop flight is 2h 21m. The time difference between Ontario and Denver is 1h.

The fastest flight 2h 21m
Average flight time 2h 21m
The earliest flight 0:49 am
The latest flight 8:04 am
Distance 818 ml

The cheapest months for traveling to Denver are november (from 30 $), january (from 40 $), february (from 43 $).

The most expensive and popular months are december (from 50 $), february (from 43 $), january (from 40 $).

The cheapest flight by Frontier Airlines that our users were able to find is $43. This airfare is economy class on one-way F91500 flight for February 21, 2025 leaving Ontario Int. in Ontario at 0:49 am, it includes all taxes and additional fees.

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Frontier Airlines Airplanes on the Route

List of the most popular Frontier Airlines airplanes flying from Ontario to Denver:

Other Popular Airlines on the Route

Besides Frontier Airlines there are other 3 airline carriers between Ontario and Denver. Please review schedules and prices from the most popular airlines to find the best airfare deals from Ontario to Denver.

Nonstop flights

There are 5 direct flights every day from Ontario. Airlines and fares are below:

UA - United Airlines

from $111

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Connecting Flights

List of flights with layovers (1 and more stops):

AS - Alaska Airlines

from $120

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UA - United Airlines

from $121

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Y4 - Volaris

from $351

Find

See more connecting flights

How to book an air ticket yourself?

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