$71+ Cheap flights from Ontario (ONT) to Idaho
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Dec 3 — Dec 101
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Idaho with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Idaho
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to IdahoExplore the most affordable flight options available from Ontario to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
Explore the most affordable flight options available from Ontario to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:00 pm -
1 stop28h 01m
Mon 12/76:15 pm -
1 stop18h 36m
Deal found 10/30![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1011:00 am -
1 stop5h 20m
Mon 12/146:15 pm -
1 stop18h 36m
Deal found 11/1![Frontier logo]()
$140
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2510:23 am -
1 stop5h 25m
Fri 1/88:44 pm -
1 stop12h 21m
Deal found 11/2![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:00 pm -
1 stop4h 01m
Mon 12/76:15 pm -
1 stop25h 16m
Deal found 10/31![Frontier logo]()
$157
This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:00 am -
1 stop10h 01m
Fri 12/116:15 pm -
1 stop25h 16m
Deal found 11/1![Frontier logo]()
$171
This Frontier deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:23 am -
1 stop5h 25m
Fri 1/15:33 pm -
1 stop5h 20m
Deal found 10/31![Frontier logo]()
$174
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop5h 11m
Sun 12/66:45 pm -
1 stop6h 12m
Deal found 11/2![Delta logo]()
$177
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/118:44 am -
1 stop7h 36m
Mon 12/146:15 pm -
1 stop18h 36m
Deal found 11/3![Frontier logo]()
$184
This Super.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:00 am -
1 stop5h 20m
Sun 12/136:15 pm -
1 stop25h 16m
Deal found 11/2![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:00 pm -
1 stop24h 15m
Sun 12/64:05 pm -
1 stop20h 46m
Deal found 11/3![Multiple Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:06 pm -
2 stops43h 09m
Mon 12/77:58 pm -
1 stop16h 53m
Deal found 11/2![Multiple Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/111:23 pm -
1 stop26h 42m
Mon 12/146:51 am -
1 stop26h 54m
Deal found 11/3![American Airlines logo]()
$363
Best flights from Ontario to IdahoDiscover carefully curated flight deals from Ontario to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
Discover carefully curated flight deals from Ontario to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop5h 11m
Sun 12/66:45 pm -
1 stop6h 12m
Deal found 11/1![Delta logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/44:16 pm -
1 stop5h 06m
Sat 2/64:15 pm -
Nonstop2h 07m
Deal found 10/31![Alaska Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/253:20 pm -
2 stops6h 30m
Fri 1/81:40 pm -
2 stops5h 55m
Deal found 11/2![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:00 am -
1 stop7h 39m
Sat 12/1210:10 am -
1 stop4h 29m
Deal found 11/3![United Airlines logo]()
$257
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/46:00 am -
1 stop5h 01m
Thu 1/71:35 pm -
1 stop20h 02m
Deal found 10/30![American Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/284:20 pm -
1 stop4h 50m
Sun 1/3111:25 am -
2 stops6h 20m
Deal found 10/31![Southwest logo]()
$245
This Alaska Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/264:00 pm -
1 stop6h 56m
Sun 2/286:00 am -
1 stop6h 09m
Deal found 10/31![Alaska Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/255:25 pm -
2 stops6h 35m
Sun 2/286:35 am -
1 stop4h 35m
Deal found 10/31![Southwest logo]()
$245
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:36 pm -
Nonstop2h 05m
Sun 12/63:40 pm -
Nonstop2h 16m
Deal found 11/2![Alaska Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:05 am -
1 stop5h 40m
Wed 11/187:20 am -
1 stop4h 10m
Deal found 10/31![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:50 am -
2 stops7h 20m
Mon 12/712:40 pm -
2 stops9h 00m
Deal found 10/30![Southwest logo]()
$322
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/141:15 pm -
2 stops9h 48m
Wed 11/189:08 am -
1 stop8h 08m
Deal found 10/30![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:05 pm -
1 stop3h 41m
Mon 12/2111:44 am -
1 stop5h 26m
Deal found 10/30![Delta logo]()
$468
This Priceline deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1412:00 pm -
1 stop5h 08m
Tue 2/2310:20 am -
1 stop5h 27m
Deal found 11/3![Alaska Airlines logo]()
$433
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:51 pm -
1 stop5h 08m
Wed 11/186:36 am -
1 stop7h 02m
Deal found 10/30![American Airlines logo]()
$559
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:12 pm -
1 stop3h 55m
Wed 12/96:59 pm -
1 stop5h 58m
Deal found 11/1![Delta logo]()
$473
This Alaska Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/911:34 am -
1 stop6h 43m
Wed 2/1710:20 am -
1 stop13h 19m
Deal found 11/3![Alaska Airlines logo]()
$436
This Alaska Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/1311:34 am -
1 stop6h 43m
Mon 1/187:59 pm -
1 stop27h 44m
Deal found 11/3![Alaska Airlines logo]()
$446
This Alaska Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2611:34 am -
1 stop6h 43m
Wed 1/2711:38 am -
2 stops9h 25m
Deal found 11/1![Alaska Airlines logo]()
$471
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/116:00 am -
1 stop5h 33m
Thu 1/141:17 pm -
1 stop4h 10m
Deal found 11/3![Delta logo]()
$588
This Priceline deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop8h 07m
Sat 12/126:00 am -
1 stop6h 13m
Deal found 11/3![Alaska Airlines logo]()
$473
This Alaska Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/193:59 pm -
1 stop17h 02m
Tue 12/2210:43 am -
1 stop14h 16m
Deal found 10/30![Alaska Airlines logo]()
$483
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/48:46 pm -
2 stops13h 10m
Thu 1/711:38 am -
1 stop12h 05m
Deal found 11/2![Alaska Airlines logo]()
$491
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:56 pm -
1 stop5h 07m
Fri 11/209:08 am -
1 stop8h 08m
Deal found 11/1![Delta logo]()
$758
This Alaska Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:10 am -
1 stop5h 07m
Sun 1/103:58 pm -
1 stop26h 19m
Deal found 10/30![Alaska Airlines logo]()
$533
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
1 stop5h 21m
Sun 11/221:17 pm -
2 stops10h 43m
Deal found 11/3![Delta logo]()
$814
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:00 am -
1 stop8h 07m
Tue 12/83:44 pm -
2 stops25h 21m
Deal found 11/2![Alaska Airlines logo]()
$561
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:00 am -
1 stop8h 07m
Wed 12/93:44 pm -
2 stops25h 21m
Deal found 11/2![Alaska Airlines logo]()
$576
Last-minute flights from Ontario to IdahoDiscover last-minute flight deals from Ontario to Idaho. Data last updated November 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Idaho. Data last updated November 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:06 pm -
2 stops43h 09m
Mon 12/77:58 pm -
1 stop16h 53m
Deal found 11/2![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:00 pm -
1 stop28h 01m
Mon 12/76:15 pm -
1 stop18h 36m
Deal found 10/30![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:00 pm -
1 stop24h 15m
Sun 12/64:05 pm -
1 stop20h 46m
Deal found 11/3![Multiple Airlines logo]()
$207
This Super.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:00 pm -
1 stop4h 01m
Mon 12/76:15 pm -
1 stop25h 16m
Deal found 10/31![Frontier logo]()
$157
This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:00 am -
1 stop10h 01m
Fri 12/116:15 pm -
1 stop25h 16m
Deal found 11/1![Frontier logo]()
$171
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop5h 11m
Sun 12/66:45 pm -
1 stop6h 12m
Deal found 11/2![Delta logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1011:00 am -
1 stop5h 20m
Mon 12/146:15 pm -
1 stop18h 36m
Deal found 11/1![Frontier logo]()
$140
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/118:44 am -
1 stop7h 36m
Mon 12/146:15 pm -
1 stop18h 36m
Deal found 11/3![Frontier logo]()
$184
This Super.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:00 am -
1 stop5h 20m
Sun 12/136:15 pm -
1 stop25h 16m
Deal found 11/2![Frontier logo]()
$187
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/111:23 pm -
1 stop26h 42m
Mon 12/146:51 am -
1 stop26h 54m
Deal found 11/3![American Airlines logo]()
$363
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2510:23 am -
1 stop5h 25m
Fri 1/88:44 pm -
1 stop12h 21m
Deal found 11/2![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:23 am -
1 stop5h 25m
Fri 1/15:33 pm -
1 stop5h 20m
Deal found 10/31![Frontier logo]()
$174
One-way flights from Ontario to IdahoSearch for one-way flight options from Ontario to Idaho. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
Search for one-way flight options from Ontario to Idaho. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
This Super.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:07 pm -
1 stop19h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Frontier logo]()
$71
This Frontier deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2310:16 am -
1 stop5h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$87
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:11 pm -
1 stop3h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Delta logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/102:26 pm -
1 stop28h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2410:30 pm -
1 stop17h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$98
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/136:00 am -
1 stop5h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Delta logo]()
$114
This Trip.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:00 am -
1 stop7h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Alaska Airlines logo]()
$117
This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/244:13 pm -
1 stop25h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$118
This Cheapflightsfares deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:00 am -
1 stop26h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:07 pm -
1 stop19h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$123
This Alaska Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/96:00 am -
1 stop5h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Alaska Airlines logo]()
$124
This Trip.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:01 pm -
1 stop24h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$130
Find flight deals from Ontario to Idaho
Keep the following information in mind while searching for Ontario to Idaho flight deals. Data was last updated November 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $135 (Kiwi.com) |
One-way from | $71 (Super.com) |
Popular in | February |
Cheapest in | April |
Average price | $327 |
Good round-trip deal | $338 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 3, 2026.
Use the filters below to find and compare flights from Ontario to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Wed 11/18
5:07 pm-1:54 pm
1 stop19h 47m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$71
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Wed 12/2
1:11 pm-5:53 pm
1 stop3h 42m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$89
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Thu 12/24
10:30 pm-4:48 pm
1 stop17h 18m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$98
Quickest round-trip
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Wed 12/2
5:36 pm-8:41 pm
Nonstop2h 05m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Tue 12/1
5:12 pm-12:22 am
1 stop6h 10m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$137
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Thu 11/26
6:00 am-10:42 am
1 stop3h 42m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$137
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Wed 11/18
5:07 pm-11:01 am
2 stops40h 54m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$138
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Mon 11/16
4:55 pm-10:50 pm
1 stop4h 55m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Thu 12/3
5:36 pm-8:41 pm
Nonstop2h 05m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$144
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Tue 11/10
8:40 am-3:50 pm
1 stop6h 10m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$147
Showing 1-10 of 58 resultsSorted by cheapest first
Best time to book a flight from Ontario to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Ontario with our price prediction graph.
ONT-BOI
ONT-IDA
ONT-SUN
ONT-PIH
ONT-LWS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Idaho
ONT-USID
ONT-BOI
ONT-IDA
ONT-SUN
ONT-PIH
What is the cheapest month to book a flight from Ontario to Idaho?
Currently, January is the cheapest month in which you can book a flight from Ontario to Idaho (average of $177). Flying from Ontario to Idaho in December is currently the most expensive (average of $498). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ONT to ID?
Find hourly flight availability from Ontario to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2026.
A simple way to save on the total cost of your ticket is to fly from Ontario to Idaho at noon. If you’re flexible enough to do this you can expect to save up to 62% on your trip compared to booking a flight in the morning.
How much does it cost to fly round-trip from Ontario to Idaho?
Airfare is below average for this route at the moment.
Ontario to Idaho flights typically cost between $284 and $424 in December.The cheapest round-trip price found within the last 5 days was $135 on Frontier (Dec 2-Dec 7).
How far ahead should I book a flight from Ontario to Idaho?
To ensure you get the cheapest price possible for a flight from Ontario to Idaho, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated November 3, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Ontario to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Ontario to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Idaho by cabin class
Find flights from Ontario to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Idaho flights
Browse other Ontario and Idaho flight options. Last updated on November 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Idaho flights
Consider these flights traveling from Ontario to Idaho.
Top 4 airlines flying from Ontario to Idaho
Discover the top 4 airlines that operate flights from Ontario to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$301 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$166 | Average$344 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$183 | Average$339 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$210 | Average$302 | FlexibilityNo cancel fee | On-time69% |