Cheap Flights from Denver, CO to Ontario, CA from $43
On Cheapflightsplus.com you will find 3 direct and 65 connecting flights from Denver to Ontario. You can compare airfare deals from 5 airlines and multiple travel sites from $43, book and save on cheap plane tickets and last minute offers. Also check out DEN-ONT flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip Denver to Ontario Flight Deals
Best Flights from Denver to Ontario Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $43 | 22:20 Denver Denver International | 23:39 Ontario Ontario Int. | 2h 19m | Frontier Airlines | F91499 |
from $43 | 18:15 Denver Denver International | 19:37 Ontario Ontario Int. | 2h 22m | Frontier Airlines | F92907 |
from $133 | 19:28 Denver Denver International | 20:55 Ontario Ontario Int. | 2h 27m | United Airlines | UA351 |
from $48 | 14:00 Denver Denver International | 17:36 Ontario Ontario Int. | 4h 36m layover 1h 18m - Las Vegas | Frontier Airlines | F92349 F92231 |
from $54 | 07:00 Denver Denver International | 15:02 Ontario Ontario Int. | 9h 2m layover 5h 37m - Las Vegas | Frontier Airlines | F9777 F94205 |
from $54 | 19:39 Denver Denver International | 07:11+1 день Ontario Ontario Int. | 12h 32m layover 9h 17m - Las Vegas | Frontier Airlines | F94967 F94757 |
from $54 | 07:00 Denver Denver International | 19:09 Ontario Ontario Int. | 13h 9m layover 9h 48m - Las Vegas | Frontier Airlines | F9777 F92231 |
from $55 | 07:00 Denver Denver International | 11:43 Ontario Ontario Int. | 5h 43m layover 2h 22m - Las Vegas | Frontier Airlines | F9777 F94757 |
from $57 | 22:41 Denver Denver International | 07:06+1 день Ontario Ontario Int. | 9h 25m layover 6h 9m - Las Vegas | Frontier Airlines | F94611 F91283 |
from $61 | 22:15 Denver Denver International | 18:06+1 день Ontario Ontario Int. | 20h 51m layover 17h 17m - Salt Lake City | Frontier Airlines | F94251 F93343 |
from $82 | 22:16 Denver Denver International | 06:36+1 день Ontario Ontario Int. | 9h 20m layover 5h 17m - San Francisco | Frontier Airlines | F93439 F92678 |
from $82 | 19:39 Denver Denver International | 15:02+1 день Ontario Ontario Int. | 20h 23m layover 17h 3m - Las Vegas | Frontier Airlines | F94967 F94205 |
from $93 | 10:00 Denver Denver International | 17:06 Ontario Ontario Int. | 8h 6m layover 4h 45m - Salt Lake City | Frontier Airlines | F93981 F93343 |
from $93 | 05:01 Denver Denver International | 17:06 Ontario Ontario Int. | 13h 5m layover 9h 43m - Salt Lake City | Frontier Airlines | F93861 F93343 |
from $121 | 13:34 Denver Denver International | 18:04 Ontario Ontario Int. | 5h 30m layover 1h 10m - San Francisco | United Airlines | UA304 UA251 |
from $121 | 11:33 Denver Denver International | 18:04 Ontario Ontario Int. | 7h 31m layover 3h 12m - San Francisco | United Airlines | UA1561 UA251 |
Flight Schedule Denver (Colorado) to Ontario (California)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
18:15 — 19:37
|
18:15 — 19:37
F92907
Frontier Airlines
Denver — Ontario
|
2h 22m |
Find flight
from$43 |
|
19:28 — 20:55
|
19:28 — 20:55
UA351
United Airlines
Denver — Ontario
|
2h 27m |
Find flight
from$133 |
|
22:20 — 23:39
|
22:20 — 23:39
F91499
Frontier Airlines
Denver — Ontario
|
2h 19m |
Find flight
from$43 |
|
05:01 — 17:06
|
05:01 — 06:36
F93861
Frontier Airlines
Denver — Salt Lake City
9h 43m stop
16:19 — 17:06
F93343
Frontier Airlines
Salt Lake City — Ontario
|
13h 5m including layover |
Find flight
from$93 |
|
06:00 — 18:04
|
06:00 — 07:50
UA573
United Airlines
Denver — San Francisco
8h 45m stop
16:35 — 18:04
UA251
United Airlines
San Francisco — Ontario
|
13h 4m including layover |
Find flight
from$284 |
|
07:00 — 15:02
|
07:00 — 08:07
F9777
Frontier Airlines
Denver — Las Vegas
5h 37m stop
18:55 — 19:59
F94205
Frontier Airlines
Las Vegas — Ontario
|
9h 2m including layover |
Find flight
from$54 |
|
07:00 — 19:09
|
07:00 — 08:14
F9777
Frontier Airlines
Denver — Las Vegas
9h 48m stop
18:02 — 19:09
F92231
Frontier Airlines
Las Vegas — Ontario
|
13h 9m including layover |
Find flight
from$54 |
|
08:54 — 15:58
|
08:54 — 10:50
F91819
Frontier Airlines
Denver — Phoenix
4h 55m stop
15:45 — 15:58
F91625
Frontier Airlines
Phoenix — Ontario
|
8h 4m including layover |
Find flight
from$216 |
|
09:00 — 13:01
|
06:00 — 07:09
F92015
Frontier Airlines
Denver — Las Vegas
1h 53m stop
16:44 — 17:51
F91357
Frontier Airlines
Las Vegas — Ontario
|
5h 1m including layover |
Find flight
from$232 |
|
09:05 — 18:04
|
09:05 — 10:56
UA538
United Airlines
Denver — San Francisco
5h 39m stop
16:35 — 18:04
UA251
United Airlines
San Francisco — Ontario
|
9h 59m including layover |
Find flight
from$284 |
|
10:00 — 17:06
|
08:08 — 09:50
F93981
Frontier Airlines
Denver — Salt Lake City
4h 45m stop
17:15 — 18:06
F93343
Frontier Airlines
Salt Lake City — Ontario
|
8h 6m including layover |
Find flight
from$93 |
|
10:15 — 18:04
|
10:15 — 12:04
UA2041
United Airlines
Denver — San Francisco
4h 31m stop
16:35 — 18:04
UA251
United Airlines
San Francisco — Ontario
|
8h 49m including layover |
Find flight
from$284 |
|
11:20 — 18:05
|
11:20 — 13:17
UA1561
United Airlines
Denver — San Francisco
3h 20m stop
16:37 — 18:05
UA1932
United Airlines
San Francisco — Ontario
|
7h 45m including layover |
Find flight
from$248 |
|
11:33 — 18:04
|
11:33 — 13:23
UA1561
United Airlines
Denver — San Francisco
3h 12m stop
16:35 — 18:04
UA251
United Airlines
San Francisco — Ontario
|
7h 31m including layover |
Find flight
from$121 |
|
12:04 — 10:38
+1 day
|
12:04 — 14:17
AS682
Alaska Airlines
Denver — Seattle
17h 43m stop
08:00 — 10:38
AS1254
Alaska Airlines
Seattle — Ontario
|
23h 34m including layover |
Find flight
from$180 |
|
12:38 — 18:19
|
12:04 — 14:17
AS682
Alaska Airlines
Denver — Seattle
1h 4m stop
15:40 — 18:13
AS1086
Alaska Airlines
Seattle — Ontario
|
6h 41m including layover |
Find flight
from$161 |
|
13:20 — 07:06
+1 day
|
13:52 — 15:03
F92349
Frontier Airlines
Denver — Las Vegas
15h 27m stop
13:56 — 15:06
F91283
Frontier Airlines
Las Vegas — Ontario
|
18h 46m including layover |
Find flight
from$57 |
|
13:34 — 18:04
|
13:34 — 15:25
UA304
United Airlines
Denver — San Francisco
1h 10m stop
16:35 — 18:04
UA251
United Airlines
San Francisco — Ontario
|
5h 30m including layover |
Find flight
from$121 |
|
14:00 — 17:36
|
13:20 — 14:33
F92349
Frontier Airlines
Denver — Las Vegas
1h 18m stop
13:51 — 15:02
F92231
Frontier Airlines
Las Vegas — Ontario
|
4h 36m including layover |
Find flight
from$48 |
|
14:49 — 11:05
+1 day
|
14:07 — 15:52
AS350
Alaska Airlines
Denver — Portland
16h 5m stop
08:13 — 10:34
AS3312
Alaska Airlines
Portland — Ontario
|
21h 16m including layover |
Find flight
from$172 |
|
15:50 — 20:40
|
15:50 — 17:45
UA1300
United Airlines
Denver — San Francisco
1h 25m stop
19:10 — 20:40
UA794
United Airlines
San Francisco — Ontario
|
5h 50m including layover |
Find flight
from$248 |
|
15:59 — 09:58
+1 day
|
15:59 — 17:50
UA1300
United Airlines
Denver — San Francisco
14h 35m stop
08:25 — 09:58
UA5740
United Airlines
San Francisco — Ontario
|
18h 59m including layover |
Find flight
from$284 |
|
16:45 — 10:38
+1 day
|
16:45 — 18:50
AS615
Alaska Airlines
Denver — Seattle
13h 10m stop
08:00 — 10:38
AS1254
Alaska Airlines
Seattle — Ontario
|
18h 53m including layover |
Find flight
from$180 |
|
16:45 — 15:16
+1 day
|
16:45 — 18:50
AS615
Alaska Airlines
Denver — Seattle
17h 55m stop
12:45 — 15:16
AS1097
Alaska Airlines
Seattle — Ontario
|
23h 31m including layover |
Find flight
from$180 |
|
19:39 — 07:11
+1 day
|
18:34 — 19:38
F94967
Frontier Airlines
Denver — Las Vegas
9h 17m stop
07:30 — 08:33
F94757
Frontier Airlines
Las Vegas — Ontario
|
12h 32m including layover |
Find flight
from$54 |
|
19:39 — 15:02
+1 day
|
18:33 — 19:37
F94967
Frontier Airlines
Denver — Las Vegas
17h 3m stop
16:35 — 17:42
F94205
Frontier Airlines
Las Vegas — Ontario
|
20h 23m including layover |
Find flight
from$82 |
|
21:59 — 15:02
+1 day
|
19:31 — 20:41
F94611
Frontier Airlines
Denver — Las Vegas
14h 39m stop
18:55 — 19:59
F94205
Frontier Airlines
Las Vegas — Ontario
|
18h 3m including layover |
Find flight
from$82 |
|
21:59 — 19:59
+1 day
|
21:59 — 23:12
F94611
Frontier Airlines
Denver — Las Vegas
19h 40m stop
18:52 — 19:59
F92233
Frontier Airlines
Las Vegas — Ontario
|
23h including layover |
Find flight
from$163 |
|
22:41 — 07:06
+1 day
|
22:41 — 23:54
F94611
Frontier Airlines
Denver — Las Vegas
6h 9m stop
13:56 — 15:06
F91283
Frontier Airlines
Las Vegas — Ontario
|
9h 25m including layover |
Find flight
from$57 |
|
17:08 — 23:58
|
17:08 — 19:10
AS615
Alaska Airlines
Denver — Seattle
45m stop
19:55 — 20:50
AS958
Alaska Airlines
Seattle — Portland
54m stop
21:44 — 23:58
AS1066
Alaska Airlines
Portland — Ontario
|
7h 50m including layover |
Find flight
from$265 |
|
17:25 — 09:58
+1 day
|
17:25 — 19:01
UA331
United Airlines
Denver — Salt Lake City
11h 4m stop
06:05 — 07:46
UA5736
United Airlines
Salt Lake City — San Francisco
39m stop
08:25 — 09:58
UA5740
United Airlines
San Francisco — Ontario
|
17h 33m including layover |
Find flight
from$283 |
|
18:30 — 09:58
+1 day
|
18:30 — 20:12
UA5762
United Airlines
Denver — Salt Lake City
9h 53m stop
06:05 — 07:46
UA5736
United Airlines
Salt Lake City — San Francisco
39m stop
08:25 — 09:58
UA5740
United Airlines
San Francisco — Ontario
|
16h 28m including layover |
Find flight
from$283 |
|
20:50 — 09:58
+1 day
|
20:50 — 22:30
UA5665
United Airlines
Denver — Salt Lake City
7h 35m stop
06:05 — 07:46
UA5736
United Airlines
Salt Lake City — San Francisco
39m stop
08:25 — 09:58
UA5740
United Airlines
San Francisco — Ontario
|
14h 8m including layover |
Find flight
from$303 |
Flight Information
Below we will explain in detail what the flights cost on the destination from Denver to Ontario depends on and how to choose the most interesting flight option for you.
Distance between Denver and Ontario is 1316 miles. Time difference between the cities is 1h. Airplanes depart 05:01 to 22:41 from 2 Denver airports and arrive 05:01 to 22:41 to 2 Ontario airports. Average flight time is 2h 22m.
- The fastest flight 2h 19m
- Average flight time 2h 22m
- The earliest flight 05:01
- The latest flight 22:41
- Distance 818 ml
The cheapest months to travel to Ontario are november (from 29 $), february (from 43 $), january (from 55 $).
The most expensive months are december (from 65 $), january (from 55 $), february (from 43 $).
What is the lowest airfare Denver to Ontario?
The cheapest plane ticket found by our users is $43. This airfare is for economy class on one-way F91499 flight by Frontier Airlines for February 21, 2025 which leaves Denver International in Denver at 22:20 am and arrives at Ontario Ontario Int. at 23:39.
Popular Airlines on the Route
The flight Denver — Ontario is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 19 departures per week at the price of from $ 159 . And the most expensive tickets are offered by United Airlines airline - from $ 582.
Direct flights
There are 3 nonstop flights on the route. The fastest direct flight is F91499 by Frontier Airlines takes 2h 19m and the cheapest is F91499 by Frontier Airlines for $43.
- from $43Find
- from $133Find
Connecting Flights
There are 65 flights with layovers on the route. The fastest connecting flight is F92349 by Frontier Airlines takes 4h 36m and the cheapest is F91499 by Frontier Airlines for $48.
- from $159Find
- from $48Find
- from $121Find
- Y4 - Volarisfrom $360Find
- AM - Aeromexicofrom $363Find
Airports
You can fly from Denver to Ontario from 2 airports (Denver International, Arapahoe Co).
Denver airports
- Denver International-DENfrom $43Find
- Arapahoe Co-APAFind
Ontario airports
- Ontario Int.-ONTFind
- International Heliport-JIOFind
Airplanes
There are flights to Ontario from Denver by 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
Top Domestic Destinations from Denver
You may also consider searching for discounted plane tickets to some other popular places from Denver within United States.
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Top International Destinations from Denver
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
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How to book a plane ticket yourself?
- Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
- Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
- Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
- Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
- That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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