Alaska Airlines Denver to Ontario Flights

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Cheapflightsplus.com will find cheap Alaska Airlines flights from Denver to Ontario. Compare airline ticket prices and book air tickets starting from $159 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 Denver (CO) — Ontario (CA) 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 - $159, two-way – $273.

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Cheap Flights from Denver to Ontario by Alaska Airlines

Look at the list of plane tickets for the most connecting flights by Alaska Airlines, their prices start from $159. There’re no direct flights. The fastest connecting flight – 6h 41m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $159 Find flight	7:00 am Denver Denver International	8:13 pm Ontario Ontario Int.	14h 13m layover 8h 21m - Seattle	Alaska Airlines	AS643 AS1088
from $172 Find flight	2:49 pm Denver Denver International	11:05 am+1 день Ontario Ontario Int.	21h 16m layover 16h 5m - Portland	Alaska Airlines	AS350 AS3312
from $200 Find flight	4:45 pm Denver Denver International	6:13 pm+1 день Ontario Ontario Int.	26h 28m layover 20h 50m - Seattle	Alaska Airlines	AS615 AS1086
from $234 Find flight	12:38 pm Denver Denver International	11:24 pm Ontario Ontario Int.	11h 46m layover 6h 4m - Seattle	Alaska Airlines	AS682 AS1003
from $245 Find flight	7:55 pm Denver Denver International	11:02 am+1 день Ontario Ontario Int.	16h 7m layover 10h 27m - Seattle	Alaska Airlines	AS525 AS1254
from $159 Find flight	7:00 am Denver Denver International	5:04 pm Ontario Ontario Int.	11h 4m layover 2h 15m - Seattle 2h 10m - Portland	Alaska Airlines	AS643 AS1039 AS3498
from $240 Find flight	12:38 pm Denver Denver International	11:58 pm Ontario Ontario Int.	12h 20m layover 5h 10m - Seattle 0h 54m - Portland	Alaska Airlines	AS682 AS958 AS1066

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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 Denver to Ontario

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
12:04 pm — 10:38 am +1 day	12:04 pm — 2:17 pm AS682 Alaska Airlines Denver — Seattle 17h 43m stop 8:00 am — 10:38 am AS1254 Alaska Airlines Seattle — Ontario	23h 34m including layover	Find flight from$180
12:04 pm — 3:16 pm +1 day	12:04 pm — 2:17 pm AS682 Alaska Airlines Denver — Seattle 22h 28m stop 12:45 pm — 3:16 pm AS1097 Alaska Airlines Seattle — Ontario	28h 12m including layover	Find flight from$180
12:38 pm — 6:19 pm	12:04 pm — 2:17 pm AS682 Alaska Airlines Denver — Seattle 1h 4m stop 3:40 pm — 6:13 pm AS1086 Alaska Airlines Seattle — Ontario	6h 41m including layover	Find flight from$161
12:38 pm — 11:24 pm	12:04 pm — 2:17 pm AS682 Alaska Airlines Denver — Seattle 6h 4m stop 8:38 pm — 11:12 pm AS1003 Alaska Airlines Seattle — Ontario	11h 46m including layover	Find flight from$234
12:38 pm — 11:58 pm	12:38 pm — 2:45 pm AS682 Alaska Airlines Denver — Seattle 5h 10m stop 7:55 pm — 8:50 pm AS958 Alaska Airlines Seattle — Portland 54m stop 9:44 pm — 11:58 pm AS1066 Alaska Airlines Portland — Ontario	12h 20m including layover	Find flight from$240
2:49 pm — 11:05 am +1 day	2:07 pm — 3:52 pm AS350 Alaska Airlines Denver — Portland 16h 5m stop 8:13 am — 10:34 am AS3312 Alaska Airlines Portland — Ontario	21h 16m including layover	Find flight from$172
4:45 pm — 3:16 pm +1 day	4:45 pm — 6:50 pm AS615 Alaska Airlines Denver — Seattle 17h 55m stop 12:45 pm — 3:16 pm AS1097 Alaska Airlines Seattle — Ontario	23h 31m including layover	Find flight from$180
4:45 pm — 10:38 am +1 day	4:45 pm — 6:50 pm AS615 Alaska Airlines Denver — Seattle 13h 10m stop 8:00 am — 10:38 am AS1254 Alaska Airlines Seattle — Ontario	18h 53m including layover	Find flight from$180
4:45 pm — 6:13 pm +1 day	4:45 pm — 6:50 pm AS615 Alaska Airlines Denver — Seattle 20h 50m stop 3:40 pm — 6:13 pm AS1086 Alaska Airlines Seattle — Ontario	26h 28m including layover	Find flight from$200
5:08 pm — 11:58 pm	5:08 pm — 7:10 pm AS615 Alaska Airlines Denver — Seattle 45m stop 7:55 pm — 8:50 pm AS958 Alaska Airlines Seattle — Portland 54m stop 9:44 pm — 11:58 pm AS1066 Alaska Airlines Portland — Ontario	7h 50m including layover	Find flight from$265
7:00 am — 8:13 pm	7:00 am — 9:19 am AS643 Alaska Airlines Denver — Seattle 8h 21m stop 5:40 pm — 8:13 pm AS1088 Alaska Airlines Seattle — Ontario	14h 13m including layover	Find flight from$159
7:00 am — 5:04 pm	7:00 am — 9:19 am AS643 Alaska Airlines Denver — Seattle 2h 15m stop 11:36 am — 12:35 pm AS1039 Alaska Airlines Seattle — Portland 2h 10m stop 3:40 pm — 5:59 pm AS3498 Alaska Airlines Portland — Ontario	11h 4m including layover	Find flight from$159
7:00 am — 6:12 pm	7:00 am — 9:19 am AS643 Alaska Airlines Denver — Seattle 6h 19m stop 3:40 pm — 6:13 pm AS1086 Alaska Airlines Seattle — Ontario	12h 12m including layover	Find flight from$160
7:00 am — 10:38 am +1 day	7:00 am — 9:21 am AS643 Alaska Airlines Denver — Seattle 22h 39m stop 8:00 am — 10:38 am AS1254 Alaska Airlines Seattle — Ontario	28h 38m including layover	Find flight from$170
7:00 am — 5:04 pm	7:00 am — 9:19 am AS643 Alaska Airlines Denver — Seattle 41m stop 10:00 am — 11:00 am AS2213 Alaska Airlines Seattle — Portland 3h 45m stop 3:40 pm — 5:59 pm AS3498 Alaska Airlines Portland — Ontario	11h 4m including layover	Find flight from$194
7:00 am — 11:58 pm	7:00 am — 9:16 am AS643 Alaska Airlines Denver — Seattle 10h 39m stop 7:55 pm — 8:50 pm AS958 Alaska Airlines Seattle — Portland 54m stop 9:44 pm — 11:58 pm AS1066 Alaska Airlines Portland — Ontario	17h 58m including layover	Find flight from$198
7:00 am — 4:59 pm	7:00 am — 9:16 am AS643 Alaska Airlines Denver — Seattle 44m stop 10:00 am — 10:54 am AS2213 Alaska Airlines Seattle — Portland 3h 51m stop 2:45 pm — 4:59 pm AS2074 Alaska Airlines Portland — Ontario	10h 59m including layover	Find flight from$234
7:00 am — 4:59 pm	7:00 am — 9:16 am AS643 Alaska Airlines Denver — Seattle 2h 20m stop 11:36 am — 12:33 pm AS1039 Alaska Airlines Seattle — Portland 2h 12m stop 2:45 pm — 4:59 pm AS2074 Alaska Airlines Portland — Ontario	10h 59m including layover	Find flight from$234
7:55 pm — 11:02 am +1 day	7:55 pm — 9:58 pm AS525 Alaska Airlines Denver — Seattle 10h 27m stop 8:25 am — 11:02 am AS1254 Alaska Airlines Seattle — Ontario	16h 7m including layover	Find flight from$245

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 20 flights by Alaska Airlines from Denver to Ontario every week with departures from Denver International and Arapahoe Co. All flights arrive at Ontario Int. and International Heliport.

Departures start from 12:04 pm to 7:55 pm. Nonstop flight is 6h 41m. The time difference between Denver and Ontario is 1h.

The fastest flight 6h 41m
Average flight time 14h 13m
The earliest flight 12:04 pm
The latest flight 7:55 pm
Distance 818 ml

The cheapest months for traveling to Ontario are january (from 159 $), february (from 160 $).

The cheapest flight by Alaska Airlines that our users were able to find is $159. This airfare is economy class on one-way AS643 flight for January 22, 2025 leaving Denver International in Denver at 7:00 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 Denver to Ontario:

Other Popular Airlines on the Route

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

Nonstop flights

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

F9 - Frontier Airlines

from $43

Find
UA - United Airlines

from $133

Find

See more direct flights

Connecting Flights

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

F9 - Frontier Airlines

from $48

Find
UA - United Airlines

from $121

Find
Y4 - Volaris

from $360

Find
AM - Aeromexico

from $363

Find

See more connecting flights

How to book an air ticket yourself?

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