Cheap Flights from Ontario, CA to Denver, CO from $59

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On Cheapflightsplus.com you will find 2 direct and 50 connecting flights from Ontario to Denver. You can compare airfare deals from 6 airlines and multiple travel sites from $59, book and save on cheap plane tickets and last minute offers. Also check out ONT-DEN flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Ontario to Denver Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $59 (one-way), $101 (round-trip).

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Best Flights from Ontario to Denver Today

Take a look at the list of non stop flights and flights with layovers from Ontario to Denver with the lowest price of $59. The fastest direct flight takes 2h 18m and the fastest connecting – 4h 7m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $115 Find flight	20:56 Ontario Ontario Int.	00:14+1 день Denver Denver International	2h 18m	Frontier Airlines	F9972
from $419 Find flight	05:45 Ontario Ontario Int.	09:03 Denver Denver International	2h 18m	United Airlines	UA1422
from $59 Find flight	10:49 Ontario Ontario Int.	17:45 Denver Denver International	5h 56m layover 0h 50m - Dallas	American Airlines	AA1472 AA2655
from $223 Find flight	06:23 Ontario Ontario Int.	14:29 Denver Denver International	7h 6m layover 3h 1m - San Francisco	United Airlines	UA1460 UA1999
from $232 Find flight	06:00 Ontario Ontario Int.	13:50 Denver Denver International	6h 50m layover 1h 19m - Seattle	Alaska Airlines	AS617 AS642
from $233 Find flight	16:58 Ontario Ontario Int.	22:38 Denver Denver International	4h 40m layover 1h 28m - Salt Lake City	Delta Air Lines Inc.	DL3506 DL1596
from $246 Find flight	22:05 Ontario Ontario Int.	04:00+1 день Denver Denver International	4h 55m layover 1h 49m - Las Vegas	Frontier Airlines	F91151 F9770
from $290 Find flight	13:32 Ontario Ontario Int.	19:21 Denver Denver International	4h 49m layover 1h 35m - Salt Lake City	Delta Air Lines Inc.	DL2256 DL2487
from $290 Find flight	05:45 Ontario Ontario Int.	12:00 Denver Denver International	5h 15m layover 2h 2m - Salt Lake City	Delta Air Lines Inc.	DL1225 DL1675
from $624 Find flight	23:50 Ontario Ontario Int.	08:51+1 день Denver Denver International	8h 1m layover 2h 25m - Houston	United Airlines	UA6073 UA2229
from $303 Find flight	06:23 Ontario Ontario Int.	14:15 Denver Denver International	6h 52m layover 0h 50m - San Francisco 1h 4m - Salt Lake City	United Airlines	UA1460 UA5872 UA5523
from $445 Find flight	06:23 Ontario Ontario Int.	14:37 Denver Denver International	7h 14m layover 0h 35m - San Francisco 0h 41m - Portland	United Airlines	UA1460 UA605 UA5581

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on April 19, 2024

Flight Schedule Ontario (California) to Denver (Colorado)

Full flight schedule will help you in detecting at what time planes fly from Ontario to Denver. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
05:45 — 09:03	05:45 — 09:03 UA1422 United Airlines Ontario — Denver	2h 18m	Find flight from$419
20:56 — 00:14 +1 day	20:56 — 00:14 F9972 Frontier Airlines Ontario — Denver	2h 18m	Find flight from$115
00:40 — 10:02	00:40 — 05:39 Y4937 Volaris Ontario — Guadalajara 1h 56m stop 07:35 — 10:02 Y4986 Volaris Guadalajara — Denver	8h 22m including layover	Find flight from$345
05:45 — 12:00	05:45 — 08:33 DL1225 Delta Air Lines Inc. Ontario — Salt Lake City 2h 2m stop 10:35 — 12:00 DL1675 Delta Air Lines Inc. Salt Lake City — Denver	5h 15m including layover	Find flight from$290
05:45 — 15:12	05:45 — 08:33 DL1225 Delta Air Lines Inc. Ontario — Salt Lake City 5h 13m stop 13:46 — 15:12 DL2383 Delta Air Lines Inc. Salt Lake City — Denver	8h 27m including layover	Find flight from$408
06:00 — 13:50	06:00 — 08:52 AS617 Alaska Airlines Ontario — Seattle 1h 19m stop 10:11 — 13:50 AS642 Alaska Airlines Seattle — Denver	6h 50m including layover	Find flight from$232
06:23 — 14:29	06:23 — 07:50 UA1460 United Airlines Ontario — San Francisco 3h 1m stop 10:51 — 14:29 UA1999 United Airlines San Francisco — Denver	7h 6m including layover	Find flight from$223
10:05 — 15:12	10:05 — 12:51 DL4152 Delta Air Lines Inc. Ontario — Salt Lake City 55m stop 13:46 — 15:12 DL2383 Delta Air Lines Inc. Salt Lake City — Denver	4h 7m including layover	Find flight from$1075
10:49 — 17:45	10:49 — 15:45 AA1472 American Airlines Ontario — Dallas 50m stop 16:35 — 17:45 AA2655 American Airlines Dallas — Denver	5h 56m including layover	Find flight from$59
11:10 — 19:05	11:10 — 13:58 DL3659 Delta Air Lines Inc. Ontario — Seattle 1h 23m stop 15:21 — 19:05 DL3695 Delta Air Lines Inc. Seattle — Denver	6h 55m including layover	Find flight from$1263
13:32 — 19:21	13:32 — 16:20 DL2256 Delta Air Lines Inc. Ontario — Salt Lake City 1h 35m stop 17:55 — 19:21 DL2487 Delta Air Lines Inc. Salt Lake City — Denver	4h 49m including layover	Find flight from$290
16:58 — 22:38	16:58 — 19:44 DL3506 Delta Air Lines Inc. Ontario — Salt Lake City 1h 28m stop 21:12 — 22:38 DL1596 Delta Air Lines Inc. Salt Lake City — Denver	4h 40m including layover	Find flight from$233
18:15 — 08:52 +1 day	18:15 — 19:44 UA5407 United Airlines Ontario — San Francisco 9h 36m stop 05:20 — 08:52 UA1733 United Airlines San Francisco — Denver	13h 37m including layover	Find flight from$482
21:07 — 04:23 +2 days	21:07 — 23:57 AS619 Alaska Airlines Ontario — Seattle 24h 52m stop 00:49 — 04:23 F9422 Frontier Airlines Seattle — Denver	30h 16m including layover	Find flight from$244
23:08 — 12:35 +1 day	23:08 — 04:45 Y4349 Volaris Ontario — Mexico City 5h 5m stop 09:50 — 12:35 AM658 Aeromexico Mexico City — Denver	12h 27m including layover	Find flight from$274
23:08 — 11:32 +1 day	23:08 — 04:45 Y4349 Volaris Ontario — Mexico City 4h 3m stop 08:48 — 11:32 Y4982 Volaris Mexico City — Denver	11h 24m including layover	Find flight from$323
00:40 — 12:35	00:40 — 05:39 Y4937 Volaris Ontario — Guadalajara 1h 51m stop 07:30 — 08:55 AM207 Aeromexico Guadalajara — Mexico City 55m stop 09:50 — 12:35 AM658 Aeromexico Mexico City — Denver	10h 55m including layover	Find flight from$615
22:05 — 14:10 +2 days	22:05 — 23:10 F91151 Frontier Airlines Ontario — Las Vegas 7h 55m stop 07:05 — 14:00 F92002 Frontier Airlines Las Vegas — Atlanta 22h 54m stop 12:54 — 14:10 NK2802 Spirit Airlines Atlanta — Denver	39h 5m including layover	Find flight from$215
22:05 — 14:10 +2 days	22:05 — 23:10 F91151 Frontier Airlines Ontario — Las Vegas 13h 46m stop 12:56 — 20:00 NK1362 Spirit Airlines Las Vegas — Atlanta 16h 54m stop 12:54 — 14:10 NK2802 Spirit Airlines Atlanta — Denver	39h 5m including layover	Find flight from$215

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

*Departure and arrival times - local. Updated on April 19, 2024

Flight Information

Below we will explain in detail what the flights cost on the destination from Ontario to Denver depends on and how to choose the most interesting flight option for you.

Distance between Ontario and Denver is 1316 miles. Time difference between the cities is 1h. Airplanes depart 00:40 to 23:55 from 2 Ontario airports and arrive 00:40 to 23:55 to 2 Denver airports. Average flight time is 2h 18m.

The fastest flight 2h 18m
Average flight time 2h 18m
The earliest flight 00:40
The latest flight 23:55
Distance 818 ml

What is the lowest airfare Ontario to Denver?

The cheapest plane ticket found by our users is $59. This airfare is for economy class on one-way AA1472 flight by American Airlines for August 21, 2020 which leaves Ontario Int. in Ontario at 10:49 am and arrives at Denver Denver International at 17:45.

Economy class

$59

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Business class

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First class

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Popular Airlines on the Route

The flight Ontario — Denver is served by 6 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by American Airlines - 11 departures per week at the price of from $ 59 . And the most expensive tickets are offered by Delta Air Lines Inc. airline - from $ 1263.

Direct flights

There are 2 nonstop flights on the route. The fastest direct flight is F9972 by Frontier Airlines takes 2h 18m and the cheapest is AA1472 by American Airlines for $115.

F9 - Frontier Airlines

from $115

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UA - United Airlines

from $419

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Connecting Flights

There are 50 flights with layovers on the route. The fastest connecting flight is DL4152 by Delta Air Lines Inc. takes 4h 7m and the cheapest is AA1472 by American Airlines for $59.

AA - American Airlines

from $59

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AS - Alaska Airlines

from $232

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F9 - Frontier Airlines

from $215

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DL - Delta Air Lines Inc.

from $233

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UA - United Airlines

from $223

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Y4 - Volaris

from $274

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Airports

You can fly from Ontario to Denver from 2 airports (Ontario Int., International Heliport).

Ontario airports

Ontario Int.-ONT

from $59
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International Heliport-JIO

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Denver airports

Denver International-DEN

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Arapahoe Co-APA

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Airplanes

There are flights to Denver from Ontario by 6 airlines that use 1 aircraft brands. They range from huge modern airplanes to small-sized.

Airbus A321

from $59

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Top Domestic Destinations from Ontario

You may also consider searching for discounted plane tickets to some other popular places from Ontario within United States.

Ontario — Tampa

from $54

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Ontario — Pittsburgh

from $70

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Ontario — Indianapolis

from $62

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Ontario — Cleveland

from $63

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Ontario — Norfolk

from $79

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Ontario — Tucson

from $80

Find
Ontario — New Orleans

from $63

Find
Ontario — San Jose

from $61

Find
Ontario — Honolulu

from $63

Find
Ontario — Austin

from $67

Find

Top International Destinations from Ontario

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.

Ontario — San Jose

from $61

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Ontario — Guadalajara

from $70

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Ontario — Mexico City

from $58

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Ontario — Cancun

from $74

Find
Ontario — Toronto

from $70

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Ontario — London

from $62

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Ontario — Vancouver

from $61

Find

All flights from Ontario | All flights to Denver

How to book a plane ticket yourself?

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