Frontier Airlines Chicago to Denver Flights

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Cheapflightsplus.com will find cheap Frontier Airlines flights from Chicago to Denver. Compare airline ticket prices and book air tickets starting from $72 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 Chicago (IL) — 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 august: one-way - $72, two-way – $123.

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Cheap Flights from Chicago 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 $72. The fastest nonstop flight takes 2h 44m. The fastest connecting flight — 13h 1m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $72 Find flight	12:35 pm Chicago Midway	2:19 pm Denver Denver International	2h 44m	Frontier Airlines	F92209
from $101 Find flight	8:27 pm Chicago O'Hare International	8:28 am+1 день Denver Denver International	13h 1m layover 6h 22m - Philadelphia	Frontier Airlines	F92112 F93339
from $188 Find flight	6:00 am Chicago Midway	8:27 am+1 день Denver Denver International	27h 27m layover 22h 42m - Dallas	Frontier Airlines	F91887 F92147
from $189 Find flight	2:15 pm Chicago O'Hare International	10:15 am+1 день Denver Denver International	21h 0m layover 14h 57m - Phoenix	Frontier Airlines	F91829 F91376
from $279 Find flight	6:16 pm Chicago O'Hare International	8:57 am+1 день Denver Denver International	15h 41m layover 9h 49m - Atlanta	Frontier Airlines	F91442 F93293
from $324 Find flight	5:20 am Chicago O'Hare International	8:27 am+1 день Denver Denver International	28h 7m layover 23h 17m - Dallas	Frontier Airlines	F93243 F92147
from $382 Find flight	5:01 am Chicago O'Hare International	8:57 am+1 день Denver Denver International	28h 56m layover 23h 28m - Atlanta	Frontier Airlines	F91596 F93293

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 08/17/2025

Frontier Airlines Flight Schedule Chicago 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
12:35 pm — 2:19 pm	12:35 pm — 2:19 pm F92209 Frontier Airlines Chicago — Denver	2h 44m	Find flight from$72
2:15 pm — 10:15 am +1 day	2:15 pm — 4:21 pm F91829 Frontier Airlines Chicago — Phoenix 14h 57m stop 7:18 am — 10:15 am F91376 Frontier Airlines Phoenix — Denver	21h including layover	Find flight from$189
5:01 am — 8:57 am +1 day	5:01 am — 8:12 am F91596 Frontier Airlines Chicago — Atlanta 23h 28m stop 7:40 am — 8:57 am F93293 Frontier Airlines Atlanta — Denver	28h 56m including layover	Find flight from$382
5:20 am — 8:27 am +1 day	5:20 am — 7:58 am F93243 Frontier Airlines Chicago — Dallas 23h 17m stop 7:15 am — 8:27 am F92147 Frontier Airlines Dallas — Denver	28h 7m including layover	Find flight from$324
6:00 am — 8:27 am +1 day	6:00 am — 8:33 am F91887 Frontier Airlines Chicago — Dallas 22h 42m stop 7:15 am — 8:27 am F92147 Frontier Airlines Dallas — Denver	27h 27m including layover	Find flight from$188
6:16 pm — 8:57 am +1 day	6:16 pm — 9:51 pm F91442 Frontier Airlines Chicago — Atlanta 9h 49m stop 7:40 am — 8:57 am F93293 Frontier Airlines Atlanta — Denver	15h 41m including layover	Find flight from$279
6:16 pm — 9:17 pm +1 day	6:16 pm — 9:51 pm F91442 Frontier Airlines Chicago — Atlanta 22h 3m stop 7:54 pm — 9:17 pm F91449 Frontier Airlines Atlanta — Denver	28h 1m including layover	Find flight from$305
8:27 pm — 8:28 am +1 day	7:04 pm — 10:30 pm F92112 Frontier Airlines Chicago — Philadelphia 6h 22m stop 6:15 am — 8:29 am F93339 Frontier Airlines Philadelphia — Denver	13h 1m including layover	Find flight from$101

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

*Departure and arrival times are local. Last updated on 08/17/2025

Flight Information

There is 1 flight by Frontier Airlines from Chicago to Denver every week with departures from Chicago FSS, Midway, O'Hare International, Chicago NAS, Merrill C Meigs (closed), Dupage County, Pal-Waukee. All flights arrive at Denver International and Arapahoe Co.

Departures start from 12:35 pm to 8:27 pm. Nonstop flight is 2h 44m. The time difference between Chicago and Denver is 1h.

The fastest flight 2h 44m
Average flight time 2h 44m
The earliest flight 12:35 pm
The latest flight 8:27 pm
Distance 900 ml

The cheapest months for traveling to Denver are august (from 72 $), july (from 77 $), june (from 101 $).

The most expensive and popular months are april (from 223 $), june (from 101 $), july (from 77 $).

The cheapest flight by Frontier Airlines that our users were able to find is $72. This airfare is economy class on one-way F92209 flight for August 8, 2025 leaving Midway in Chicago at 12:35 pm, 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 Chicago to Denver:

Other Popular Airlines on the Route

Besides Frontier Airlines there are other 4 airline carriers between Chicago and Denver. Please review schedules and prices from the most popular airlines to find the best airfare deals from Chicago to Denver.

Nonstop flights

There are 3 direct flights every day from Chicago. Airlines and fares are below:

UA - United Airlines

from $112

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Connecting Flights

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

UA - United Airlines

from $226

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SY - Sun Country Airlines

from $142

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G4 - Allegiant Air

from $151

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NK - Spirit Airlines

from $230

Find

See more connecting flights

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