Cheap Flights from Ontario, CA to Boise, ID from $72

On Cheapflightsplus.com you will find 163 connecting flights from Ontario to Boise. You can compare airfare deals from 4 airlines and multiple travel sites from $72, book and save on cheap plane tickets and last minute offers. Also check out ONT-BOI flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Ontario to Boise 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: $72 (one-way), $123 (round-trip).
Direct flights
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Full flight schedule will help you in detecting at what time planes fly from Ontario to Boise. 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 — 11:46
00:59 — 04:19 F91500 Frontier Airlines
Ontario — Denver
5h 31m stop
09:50 — 11:46 F93933 Frontier Airlines
Denver — Boise
9h 47m
including layover
Find flight
from$72
05:05 — 13:29
05:05 — 08:23 UA1575 United Airlines
Ontario — Denver
3h 7m stop
11:31 — 13:30 UA1125 United Airlines
Denver — Boise
7h 24m
including layover
Find flight
from$153
05:10 — 13:35
05:10 — 08:27 UA2446 United Airlines
Ontario — Denver
3h 9m stop
11:36 — 13:35 UA1125 United Airlines
Denver — Boise
7h 25m
including layover
Find flight
from$154
06:00 — 14:35
06:00 — 08:42 HA6288 Hawaiian Airlines
Ontario — Seattle
3h 15m stop
12:31 — 15:04 HA6616 Hawaiian Airlines
Seattle — Boise
7h 35m
including layover
Find flight
from$99
06:00 — 13:01
06:00 — 08:45 AS1091 Alaska Airlines
Ontario — Seattle
1h 41m stop
10:26 — 13:01 AS3307 Alaska Airlines
Seattle — Boise
6h 1m
including layover
Find flight
from$103
07:30 — 12:49
07:30 — 09:44 HA6286 Hawaiian Airlines
Ontario — Portland
47m stop
10:31 — 12:49 HA6321 Hawaiian Airlines
Portland — Boise
4h 19m
including layover
Find flight
from$132
07:30 — 12:49
07:30 — 09:44 AS2179 Alaska Airlines
Ontario — Portland
47m stop
10:31 — 12:49 AS3285 Alaska Airlines
Portland — Boise
4h 19m
including layover
Find flight
from$138
09:35 — 16:58
09:35 — 10:54 UA1585 United Airlines
Ontario — San Francisco
3h 24m stop
14:18 — 16:58 UA5435 United Airlines
San Francisco — Boise
6h 23m
including layover
Find flight
from$154
10:06 — 16:50
10:03 — 12:19 HA6284 Hawaiian Airlines
Ontario — Portland
2h 5m stop
14:30 — 16:48 HA6327 Hawaiian Airlines
Portland — Boise
5h 44m
including layover
Find flight
from$150
11:15 — 16:43
10:03 — 12:19 AS2456 Alaska Airlines
Ontario — Portland
57m stop
14:30 — 16:48 AS946 Alaska Airlines
Portland — Boise
4h 28m
including layover
Find flight
from$153
11:39 — 20:06
11:39 — 14:19 AS1111 Alaska Airlines
Ontario — Seattle
3h 21m stop
17:40 — 20:06 AS3305 Alaska Airlines
Seattle — Boise
7h 27m
including layover
Find flight
from$147
12:00 — 18:11
12:00 — 14:38 HA6289 Hawaiian Airlines
Ontario — Seattle
1h 7m stop
15:45 — 18:11 HA6622 Hawaiian Airlines
Seattle — Boise
5h 11m
including layover
Find flight
from$116
12:00 — 18:11
12:00 — 14:38 AS1111 Alaska Airlines
Ontario — Seattle
1h 7m stop
15:45 — 18:11 AS2326 Alaska Airlines
Seattle — Boise
5h 11m
including layover
Find flight
from$123
13:31 — 20:12
13:31 — 16:14 AS1111 Alaska Airlines
Ontario — Seattle
1h 26m stop
17:40 — 20:12 AS3316 Alaska Airlines
Seattle — Boise
5h 41m
including layover
Find flight
from$123
13:31 — 22:58
12:00 — 14:38 AS1111 Alaska Airlines
Ontario — Seattle
4h 15m stop
20:14 — 22:46 AS1034 Alaska Airlines
Seattle — Boise
8h 27m
including layover
Find flight
from$127
14:21 — 22:46
14:21 — 16:58 HA6307 Hawaiian Airlines
Ontario — Seattle
3h 16m stop
20:14 — 22:46 HA6648 Hawaiian Airlines
Seattle — Boise
7h 25m
including layover
Find flight
from$99
14:21 — 22:46
14:21 — 16:58 AS1242 Alaska Airlines
Ontario — Seattle
3h 16m stop
20:14 — 22:46 AS1034 Alaska Airlines
Seattle — Boise
7h 25m
including layover
Find flight
from$106
15:04 — 22:40
15:04 — 17:44 HA6290 Hawaiian Airlines
Ontario — Seattle
2h 26m stop
20:10 — 22:40 HA6615 Hawaiian Airlines
Seattle — Boise
6h 36m
including layover
Find flight
from$99
16:00 — 22:46
16:00 — 18:40 HA6290 Hawaiian Airlines
Ontario — Seattle
1h 34m stop
20:14 — 22:46 HA6648 Hawaiian Airlines
Seattle — Boise
5h 46m
including layover
Find flight
from$99
16:00 — 22:46
16:00 — 18:40 AS1119 Alaska Airlines
Ontario — Seattle
1h 34m stop
20:14 — 22:46 AS1034 Alaska Airlines
Seattle — Boise
5h 46m
including layover
Find flight
from$106
17:21 — 11:46
+1 day
17:21 — 20:44 F92908 Frontier Airlines
Ontario — Denver
13h 6m stop
09:50 — 11:46 F93933 Frontier Airlines
Denver — Boise
17h 25m
including layover
Find flight
from$81
17:45 — 23:57
17:45 — 20:03 AS2202 Alaska Airlines
Ontario — Portland
1h 37m stop
21:40 — 23:57 AS996 Alaska Airlines
Portland — Boise
5h 12m
including layover
Find flight
from$103
18:10 — 23:54
18:10 — 20:27 HA6303 Hawaiian Airlines
Ontario — Portland
1h 13m stop
21:40 — 23:54 HA6361 Hawaiian Airlines
Portland — Boise
4h 44m
including layover
Find flight
from$132
18:50 — 23:34
18:50 — 20:09 UA393 United Airlines
Ontario — San Francisco
41m stop
20:50 — 23:34 UA5312 United Airlines
San Francisco — Boise
3h 44m
including layover
Find flight
from$136
19:25 — 14:35
+1 day
19:25 — 22:05 AS1399 Alaska Airlines
Ontario — Seattle
13h 55m stop
12:00 — 14:35 AS1018 Alaska Airlines
Seattle — Boise
18h 10m
including layover
Find flight
from$127
19:25 — 15:45
+1 day
19:25 — 22:05 AS1399 Alaska Airlines
Ontario — Seattle
15h 16m stop
13:21 — 15:45 AS2012 Alaska Airlines
Seattle — Boise
19h 20m
including layover
Find flight
from$127
*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 Boise depends on and how to choose the most interesting flight option for you.

Distance between Ontario and Boise is 1064 miles. Time difference between the cities is 1h. Airplanes depart 00:59 to 19:25 from 2 Ontario airports and arrive 00:59 to 19:25 to 1 Boise airport. Average flight time is 8h.

  • The fastest flight 3h 44m
  • Average flight time 8h
  • The earliest flight 00:59
  • The latest flight 19:25
  • Distance 662 ml

The cheapest months to travel to Boise are july (from 96 $), august (from 121 $), october (from 138 $).

The most expensive months are september (from 138 $), october (from 138 $), august (from 121 $).

What is the lowest airfare Ontario to Boise?

The cheapest plane ticket found by our users is $72. This airfare is for economy class on one-way F91500 flight by Frontier Airlines for July 13, 2025 which leaves Ontario Int. in Ontario at 00:59 am and arrives at Boise Boise at 11:46.

Economy class
$72
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Business class
?
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First class
?
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Popular Airlines on the Route

The flight Ontario — Boise is served by 4 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Alaska Airlines - 68 departures per week at the price of from $ 103 . And the most expensive tickets are offered by United Airlines airline - from $ 329.

Direct flights

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

Connecting Flights

There are 163 flights with layovers on the route. The fastest connecting flight is UA393 by United Airlines takes 3h 44m and the cheapest is F91500 by Frontier Airlines for $72.

  • AS - Alaska Airlines
    from $103
    Find
  • F9 - Frontier Airlines
    from $72
    Find
  • HA - Hawaiian Airlines
    from $99
    Find
  • UA - United Airlines
    from $132
    Find
See more connecting flights

Airports

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

Ontario airports

  • Ontario Int.-ONT
    from $72
    Find
  • International Heliport-JIO
    Find

Boise airports

  • Boise-BOI
    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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