Cheap Flights from Ontario, CA to Boise, ID from $92

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 $92, 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.

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 92 $), august (from 115 $), october (from 131 $).

The most expensive months are september (from 131 $), october (from 131 $), august (from 115 $).

What is the lowest airfare Ontario to Boise?

The cheapest plane ticket found by our users is $92. This airfare is for economy class on one-way F91500 flight by Frontier Airlines for July 6, 2025 which leaves Ontario Int. in Ontario at 00:59 am and arrives at Boise Boise at 11:46.

Economy class
$92
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Business class
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First class
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Flight Schedule Ontario (California) to Boise (Idaho)

00:59 — 11:46
9h 47m flight time
Find flight
from$92
00:59 — 04:19 Ontario — Denver
F91500 Frontier Airlines
5h 31m stop
09:50 — 11:46 Denver — Boise
F93933 Frontier Airlines
06:00 — 14:35
7h 35m flight time
Find flight
from$127
06:00 — 08:42 Ontario — Seattle
HA6288 Hawaiian Airlines
3h 15m stop
12:31 — 15:04 Seattle — Boise
HA6616 Hawaiian Airlines
06:00 — 13:01
6h 1m flight time
Find flight
from$131
06:00 — 08:45 Ontario — Seattle
AS1091 Alaska Airlines
1h 41m stop
10:26 — 13:01 Seattle — Boise
AS3307 Alaska Airlines
06:00 — 14:35
7h 35m flight time
Find flight
from$131
06:00 — 08:42 Ontario — Seattle
AS1091 Alaska Airlines
3h 15m stop
12:31 — 15:04 Seattle — Boise
AS1018 Alaska Airlines
06:00 — 12:20
5h 20m flight time
Find flight
from$157
06:00 — 08:42 Ontario — Seattle
HA6288 Hawaiian Airlines
1h 8m stop
09:50 — 12:20 Seattle — Boise
HA6668 Hawaiian Airlines
12:00 — 18:11
5h 11m flight time
Find flight
from$147
12:00 — 14:38 Ontario — Seattle
HA6289 Hawaiian Airlines
1h 7m stop
15:45 — 18:11 Seattle — Boise
HA6622 Hawaiian Airlines
13:31 — 20:12
5h 41m flight time
Find flight
from$156
13:31 — 16:14 Ontario — Seattle
AS1111 Alaska Airlines
1h 26m stop
17:40 — 20:12 Seattle — Boise
AS3316 Alaska Airlines
14:21 — 22:46
7h 25m flight time
Find flight
from$126
14:21 — 16:58 Ontario — Seattle
HA6307 Hawaiian Airlines
3h 16m stop
20:14 — 22:46 Seattle — Boise
HA6648 Hawaiian Airlines
14:21 — 22:46
7h 25m flight time
Find flight
from$135
14:21 — 16:58 Ontario — Seattle
AS1242 Alaska Airlines
3h 16m stop
20:14 — 22:46 Seattle — Boise
AS1034 Alaska Airlines
15:04 — 22:40
6h 36m flight time
Find flight
from$125
15:04 — 17:44 Ontario — Seattle
HA6290 Hawaiian Airlines
2h 26m stop
20:10 — 22:40 Seattle — Boise
HA6615 Hawaiian Airlines
16:00 — 22:46
5h 46m flight time
Find flight
from$126
16:00 — 18:40 Ontario — Seattle
HA6290 Hawaiian Airlines
1h 34m stop
20:14 — 22:46 Seattle — Boise
HA6648 Hawaiian Airlines
16:00 — 22:46
5h 46m flight time
Find flight
from$135
16:00 — 18:40 Ontario — Seattle
AS1119 Alaska Airlines
1h 34m stop
20:14 — 22:46 Seattle — Boise
AS1034 Alaska Airlines
16:00 — 00:11+1day
7h 11m flight time
Find flight
from$147
16:00 — 18:40 Ontario — Seattle
HA6290 Hawaiian Airlines
3h 5m stop
21:45 — 00:11 Seattle — Boise
HA6623 Hawaiian Airlines
17:21 — 11:46+1day
17h 25m flight time
Find flight
from$104
17:21 — 20:44 Ontario — Denver
F92908 Frontier Airlines
13h 6m stop
09:50 — 11:46 Denver — Boise
F93933 Frontier Airlines
17:45 — 23:57
5h 12m flight time
Find flight
from$131
17:45 — 20:03 Ontario — Portland
AS2202 Alaska Airlines
1h 37m stop
21:40 — 23:57 Portland — Boise
AS996 Alaska Airlines
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 and arrival times - local. Updated on October 16, 2025.

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 $ 131 . And the most expensive tickets are offered by United Airlines airline - from $ 417.

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 $92.

  • AS - Alaska Airlines
    from $131
    Find
  • F9 - Frontier Airlines
    from $92
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  • HA - Hawaiian Airlines
    from $125
    Find
  • UA - United Airlines
    from $168
    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 $92
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  • International Heliport-JIO
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Boise airports

  • Boise-BOI
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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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