Cheap Flights from Ontario, CA to Phoenix, AZ from $51

On Cheapflightsplus.com you will find 148 connecting flights from Ontario to Phoenix. You can compare airfare deals from 4 airlines and multiple travel sites from $51, book and save on cheap plane tickets and last minute offers. Also check out ONT-PHX flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Ontario to Phoenix 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: $51 (one-way), $87 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Ontario to Phoenix. 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 Arrival Flight Details Flight Duration Price
00:59 — 08:27
00:59 — 04:17 F91500 Frontier Airlines
Ontario — Denver
3h 12m stop
07:30 — 08:34 F91375 Frontier Airlines
Denver — Phoenix
7h 28m
including layover
Find flight
from$56
00:59 — 17:20
00:59 — 04:17 F91500 Frontier Airlines
Ontario — Denver
11h 56m stop
16:48 — 17:51 F92105 Frontier Airlines
Denver — Phoenix
16h 21m
including layover
Find flight
from$66
05:10 — 14:37
05:10 — 08:27 UA2446 United Airlines
Ontario — Denver
5h 14m stop
13:41 — 14:37 UA204 United Airlines
Denver — Phoenix
9h 27m
including layover
Find flight
from$180
05:10 — 17:02
05:10 — 08:27 UA2446 United Airlines
Ontario — Denver
7h 38m stop
16:05 — 17:02 UA2249 United Airlines
Denver — Phoenix
11h 52m
including layover
Find flight
from$180
06:00 — 11:52
06:00 — 07:16 F92232 Frontier Airlines
Ontario — Las Vegas
3h 20m stop
10:38 — 12:00 F94048 Frontier Airlines
Las Vegas — Phoenix
5h 52m
including layover
Find flight
from$69
06:00 — 12:51
06:00 — 08:46 AS1091 Alaska Airlines
Ontario — Seattle
1h 6m stop
10:02 — 12:54 AS1007 Alaska Airlines
Seattle — Phoenix
6h 51m
including layover
Find flight
from$133
07:10 — 20:06
07:10 — 09:29 HA6286 Hawaiian Airlines
Ontario — Portland
8h 1m stop
17:30 — 20:06 HA6236 Hawaiian Airlines
Portland — Phoenix
12h 56m
including layover
Find flight
from$144
07:10 — 17:02
07:10 — 09:27 AS1058 Alaska Airlines
Ontario — Portland
5h 1m stop
14:30 — 17:15 AS1161 Alaska Airlines
Portland — Phoenix
9h 52m
including layover
Find flight
from$150
08:00 — 15:36
10:52 — 12:04 F92232 Frontier Airlines
Ontario — Las Vegas
4h 58m stop
20:06 — 21:24 F94114 Frontier Airlines
Las Vegas — Phoenix
7h 36m
including layover
Find flight
from$66
09:35 — 18:42
09:35 — 10:54 UA1585 United Airlines
Ontario — San Francisco
5h 44m stop
16:38 — 18:42 UA1561 United Airlines
San Francisco — Phoenix
9h 7m
including layover
Find flight
from$164
09:35 — 23:15
+1 day
09:35 — 10:54 UA1585 United Airlines
Ontario — San Francisco
10h 17m stop
21:11 — 23:15 UA1863 United Airlines
San Francisco — Phoenix
13h 40m
including layover
Find flight
from$164
10:03 — 20:15
10:00 — 12:22 HA6284 Hawaiian Airlines
Ontario — Portland
5h 11m stop
17:40 — 20:19 HA6335 Hawaiian Airlines
Portland — Phoenix
10h 12m
including layover
Find flight
from$173
10:03 — 20:15
10:03 — 12:19 AS2456 Alaska Airlines
Ontario — Portland
5h 11m stop
17:30 — 20:15 AS1176 Alaska Airlines
Portland — Phoenix
10h 12m
including layover
Find flight
from$179
11:15 — 17:02
10:06 — 12:25 AS2456 Alaska Airlines
Ontario — Portland
57m stop
14:30 — 17:15 AS1161 Alaska Airlines
Portland — Phoenix
5h 47m
including layover
Find flight
from$162
12:00 — 18:57
12:00 — 14:38 HA6289 Hawaiian Airlines
Ontario — Seattle
1h 21m stop
15:59 — 18:57 HA6631 Hawaiian Airlines
Seattle — Phoenix
6h 57m
including layover
Find flight
from$145
12:00 — 18:57
12:00 — 14:38 AS1111 Alaska Airlines
Ontario — Seattle
1h 21m stop
15:59 — 18:57 AS744 Alaska Airlines
Seattle — Phoenix
6h 57m
including layover
Find flight
from$152
13:31 — 23:40
+1 day
11:51 — 14:35 HA6289 Hawaiian Airlines
Ontario — Seattle
4h 31m stop
19:59 — 22:49 HA6846 Hawaiian Airlines
Seattle — Phoenix
10h 9m
including layover
Find flight
from$129
13:31 — 20:57
12:00 — 14:38 AS1111 Alaska Airlines
Ontario — Seattle
1h 46m stop
17:59 — 21:00 AS632 Alaska Airlines
Seattle — Phoenix
7h 26m
including layover
Find flight
from$132
14:21 — 21:00
14:21 — 16:58 HA6307 Hawaiian Airlines
Ontario — Seattle
1h 1m stop
17:59 — 21:00 HA6844 Hawaiian Airlines
Seattle — Phoenix
6h 39m
including layover
Find flight
from$137
14:21 — 22:49
14:21 — 16:58 HA6307 Hawaiian Airlines
Ontario — Seattle
2h 52m stop
20:55 — 23:54 HA6846 Hawaiian Airlines
Seattle — Phoenix
8h 28m
including layover
Find flight
from$137
16:00 — 12:55
+1 day
16:00 — 18:40 HA6290 Hawaiian Airlines
Ontario — Seattle
15h 14m stop
09:54 — 12:55 HA6849 Hawaiian Airlines
Seattle — Phoenix
20h 55m
including layover
Find flight
from$174
16:00 — 10:52
+1 day
16:00 — 18:40 AS1119 Alaska Airlines
Ontario — Seattle
13h 15m stop
07:55 — 10:52 AS606 Alaska Airlines
Seattle — Phoenix
18h 52m
including layover
Find flight
from$182
17:21 — 23:41
+1 day
10:55 — 14:18 F91262 Frontier Airlines
Ontario — Denver
1h 54m stop
22:59 — 00:56 F94753 Frontier Airlines
Denver — Phoenix
6h 20m
including layover
Find flight
from$51
17:21 — 08:34
+1 day
10:55 — 14:18 F91262 Frontier Airlines
Ontario — Denver
10h 45m stop
07:00 — 09:02 F91375 Frontier Airlines
Denver — Phoenix
15h 13m
including layover
Find flight
from$51
18:30 — 08:59
+1 day
18:30 — 19:49 UA393 United Airlines
Ontario — San Francisco
11h 11m stop
07:00 — 08:59 UA2374 United Airlines
San Francisco — Phoenix
14h 29m
including layover
Find flight
from$164
18:50 — 23:09
+1 day
18:50 — 20:09 UA393 United Airlines
Ontario — San Francisco
56m stop
21:05 — 23:09 UA390 United Airlines
San Francisco — Phoenix
4h 19m
including layover
Find flight
from$171
19:22 — 11:00
+1 day
18:51 — 21:31 AS1087 Alaska Airlines
Ontario — Seattle
9h 50m stop
07:55 — 10:52 AS606 Alaska Airlines
Seattle — Phoenix
15h 38m
including layover
Find flight
from$141
*Departure and arrival times - local. Updated on July 3, 2025

Flight Information

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

Distance between Ontario and Phoenix is 521 miles. Time difference between the cities is 1h. Airplanes depart 00:59 to 19:22 from 2 Ontario airports and arrive 00:59 to 19:22 to 5 Phoenix airports. Average flight time is 11h 7m.

  • The fastest flight 4h 19m
  • Average flight time 11h 7m
  • The earliest flight 00:59
  • The latest flight 19:22
  • Distance 324 ml

The cheapest months to travel to Phoenix are november (from 69 $), july (from 69 $), august (from 77 $).

The most expensive months are october (from 90 $), september (from 89 $), june (from 82 $).

What is the lowest airfare Ontario to Phoenix?

The cheapest plane ticket found by our users is $51. This airfare is for economy class on one-way F91262 flight by Frontier Airlines for July 9, 2025 which leaves Ontario Int. in Ontario at 17:21 am and arrives at Phoenix Sky Harbor Intl at 23:41.

Economy class
$51
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Business class
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First class
?
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Popular Airlines on the Route

The flight Ontario — Phoenix is served by 4 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Alaska Airlines - 55 departures per week at the price of from $ 132 . And the most expensive tickets are offered by United Airlines airline - from $ 512.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 148 flights with layovers on the route. The fastest connecting flight is UA393 by United Airlines takes 4h 19m and the cheapest is F91262 by Frontier Airlines for $51.

  • AS - Alaska Airlines
    from $132
    Find
  • F9 - Frontier Airlines
    from $51
    Find
  • HA - Hawaiian Airlines
    from $129
    Find
  • UA - United Airlines
    from $164
    Find
See more connecting flights

Airports

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

Ontario airports

  • Ontario Int.-ONT
    from $51
    Find
  • International Heliport-JIO
    Find

Phoenix airports

  • Williams Gateway-AZA
    Find
  • Sky Harbor Intl-PHX
    Find
  • Phoenix-Deer Valley-DVT
    Find
  • Luke AFB-LUF
    Find
  • Scottsdale Municipal-SCF
    Find

How to book a plane ticket yourself?

How to book an air 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.

    To find a plane ticket, please select dates.

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