Alaska Airlines Ontario to Denver Flights

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Cheapflightsplus.com will find cheap Alaska Airlines flights from Ontario to Denver. Compare airline ticket prices and book air tickets starting from $120 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Alaska Airlines, arrivals and departure details below.

Find Cheap Airfare Ontario (CA) — Denver (CO) by Alaska 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 - $120, two-way – $206.

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Cheap Flights from Ontario to Denver by Alaska Airlines

Look at the list of plane tickets for the most connecting flights by Alaska Airlines, their prices start from $120. There’re no direct flights. The fastest connecting flight – 5h 57m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $120 Find flight	6:00 am Ontario Ontario Int.	3:49 pm Denver Denver International	8h 49m layover 3h 6m - Seattle	Alaska Airlines	AS1091 AS602
from $159 Find flight	11:14 am Ontario Ontario Int.	1:07 pm+1 день Denver Denver International	24h 53m layover 19h 57m - Portland	Alaska Airlines	AS3312 AS336
from $163 Find flight	7:00 am Ontario Ontario Int.	1:57 pm Denver Denver International	5h 57m layover 0h 53m - Portland	Alaska Airlines	AS1058 AS336
from $190 Find flight	11:33 am Ontario Ontario Int.	10:36 pm Denver Denver International	10h 3m layover 4h 35m - Seattle	Alaska Airlines	AS1255 AS321
from $438 Find flight	5:44 pm Ontario Ontario Int.	8:32 am+1 день Denver Denver International	13h 48m layover 8h 50m - Portland	Alaska Airlines	AS3498 UA459
from $149 Find flight	11:14 am Ontario Ontario Int.	10:36 pm Denver Denver International	10h 22m layover 1h 22m - Portland 3h 0m - Seattle	Alaska Airlines	AS3312 AS2355 AS321
from $170 Find flight	5:44 pm Ontario Ontario Int.	11:07 am+1 день Denver Denver International	16h 23m layover 0h 57m - Portland 9h 25m - Seattle	Alaska Airlines	AS3498 AS2113 AS682
from $170 Find flight	5:44 pm Ontario Ontario Int.	10:36 pm+1 день Denver Denver International	27h 52m layover 0h 57m - Portland 20h 59m - Seattle	Alaska Airlines	AS3498 AS2113 AS321
from $175 Find flight	4:06 pm Ontario Ontario Int.	1:07 pm+1 день Denver Denver International	20h 1m layover 3h 52m - Seattle 9h 52m - Portland	Alaska Airlines	AS1119 AS957 AS336
from $185 Find flight	5:44 pm Ontario Ontario Int.	3:49 pm+1 день Denver Denver International	21h 5m layover 0h 57m - Portland 14h 0m - Seattle	Alaska Airlines	AS3498 AS2113 AS602
from $192 Find flight	7:00 am Ontario Ontario Int.	6:59 pm Denver Denver International	10h 59m layover 2h 14m - Portland 2h 40m - Seattle	Alaska Airlines	AS1058 AS970 AS524
from $205 Find flight	5:44 pm Ontario Ontario Int.	10:36 pm+1 день Denver Denver International	27h 52m layover 20h 20m - Portland 1h 30m - Seattle	Alaska Airlines	AS3498 AS2102 AS321
from $205 Find flight	5:44 pm Ontario Ontario Int.	10:36 pm+1 день Denver Denver International	27h 52m layover 18h 50m - Portland 2h 59m - Seattle	Alaska Airlines	AS3498 AS3358 AS321
from $229 Find flight	7:00 am Ontario Ontario Int.	6:59 pm Denver Denver International	10h 59m layover 4h 7m - Portland 0h 49m - Seattle	Alaska Airlines	AS1058 AS1008 AS524
from $299 Find flight	7:00 am Ontario Ontario Int.	4:12 pm Denver Denver International	8h 12m layover 1h 6m - Portland 1h 7m - Seattle	Alaska Airlines	AS1058 AS2229 AS602

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

Alaska 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
4:06 pm — 11:07 am +1 day	1:53 pm — 4:46 pm AS1119 Alaska Airlines Ontario — Seattle 12h 26m stop 6:10 am — 9:52 am AS682 Alaska Airlines Seattle — Denver	18h 1m including layover	Find flight from$164
6:00 am — 3:49 pm	6:00 am — 8:54 am AS1091 Alaska Airlines Ontario — Seattle 3h 6m stop 12:00 pm — 3:49 pm AS602 Alaska Airlines Seattle — Denver	8h 49m including layover	Find flight from$120
6:00 am — 10:36 pm	6:00 am — 8:54 am AS1091 Alaska Airlines Ontario — Seattle 10h 5m stop 7:38 pm — 11:15 pm AS321 Alaska Airlines Seattle — Denver	15h 36m including layover	Find flight from$149
7:00 am — 1:57 pm	7:00 am — 9:26 am AS1058 Alaska Airlines Ontario — Portland 53m stop 10:19 am — 1:57 pm AS336 Alaska Airlines Portland — Denver	5h 57m including layover	Find flight from$163
11:14 am — 10:36 pm	11:14 am — 1:38 pm AS3312 Alaska Airlines Ontario — Portland 1h 22m stop 3:00 pm — 3:59 pm AS2355 Alaska Airlines Portland — Seattle 3h stop 6:59 pm — 10:36 pm AS321 Alaska Airlines Seattle — Denver	10h 22m including layover	Find flight from$149
11:14 am — 10:36 pm	11:14 am — 1:38 pm AS3312 Alaska Airlines Ontario — Portland 2h 52m stop 4:30 pm — 5:29 pm AS2102 Alaska Airlines Portland — Seattle 1h 30m stop 7:38 pm — 11:15 pm AS321 Alaska Airlines Seattle — Denver	10h 22m including layover	Find flight from$149
4:06 pm — 1:07 pm +1 day	4:06 pm — 6:59 pm AS1119 Alaska Airlines Ontario — Seattle 11h 43m stop 6:42 am — 7:31 am AS2111 Alaska Airlines Seattle — Portland 2h 4m stop 9:35 am — 1:07 pm AS336 Alaska Airlines Portland — Denver	20h 1m including layover	Find flight from$170
5:44 pm — 11:07 am +1 day	5:44 pm — 8:10 pm AS3498 Alaska Airlines Ontario — Portland 57m stop 9:07 pm — 10:00 pm AS2113 Alaska Airlines Portland — Seattle 9h 25m stop 7:25 am — 11:07 am AS682 Alaska Airlines Seattle — Denver	16h 23m including layover	Find flight from$170
5:44 pm — 10:36 pm +1 day	5:44 pm — 8:10 pm AS3498 Alaska Airlines Ontario — Portland 57m stop 9:07 pm — 10:00 pm AS2113 Alaska Airlines Portland — Seattle 20h 59m stop 6:59 pm — 10:36 pm AS321 Alaska Airlines Seattle — Denver	27h 52m including layover	Find flight from$170
7:00 am — 6:59 pm	7:00 am — 9:26 am AS1058 Alaska Airlines Ontario — Portland 2h 14m stop 11:40 am — 12:41 pm AS970 Alaska Airlines Portland — Seattle 2h 40m stop 3:21 pm — 6:59 pm AS524 Alaska Airlines Seattle — Denver	10h 59m including layover	Find flight from$192

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 are 37 flights by Alaska 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 11:14 am to 7:00 am. Nonstop flight is 5h 57m. The time difference between Ontario and Denver is 1h.

The fastest flight 5h 57m
Average flight time 14h 42m
The earliest flight 11:14 am
The latest flight 7:00 am
Distance 818 ml

The cheapest months for traveling to Denver are february (from 120 $), january (from 149 $), december (from 196 $).

The most expensive and popular months are november (from 463 $), december (from 196 $), january (from 149 $).

The cheapest flight by Alaska Airlines that our users were able to find is $120. This airfare is economy class on one-way AS1091 flight for February 1, 2025 leaving Ontario Int. in Ontario at 6:00 am, it includes all taxes and additional fees.

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Alaska Airlines Airplanes on the Route

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

Other Popular Airlines on the Route

Besides Alaska 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:

F9 - Frontier Airlines

from $43

Find
UA - United Airlines

from $111

Find

See more direct flights

Connecting Flights

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

F9 - Frontier Airlines

from $55

Find
UA - United Airlines

from $121

Find
Y4 - Volaris

from $351

Find

See more connecting flights

How to book an air ticket yourself?

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