$81+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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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
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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 September 17, 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 September 17, 2026.
This Southwest deal was found by Cheapflights users on 9/14. 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 10/176:05 am -
1 stop5h 50m
Wed 10/214:40 pm -
1 stop6h 25m
Deal found 9/14![Southwest logo]()
$183
This Southwest deal was found by Cheapflights users on 9/14. 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 10/107:20 am -
1 stop4h 35m
Tue 10/201:25 pm -
1 stop6h 10m
Deal found 9/14![Southwest logo]()
$184
This Southwest deal was found by Cheapflights users on 9/17. 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.
Wed 10/283:10 pm -
2 stops7h 05m
Wed 11/1112:40 pm -
1 stop6h 10m
Deal found 9/17![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 9/16. 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.
Tue 10/275:40 am -
2 stops7h 05m
Sat 10/316:00 am -
2 stops8h 05m
Deal found 9/16![Southwest logo]()
$194
This Southwest deal was found by Cheapflights users on 9/14. 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.
Wed 10/213:10 pm -
2 stops7h 05m
Wed 10/286:15 am -
2 stops6h 45m
Deal found 9/14![Southwest logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 9/13. 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
Sun 11/152:49 pm -
1 stop21h 27m
Deal found 9/13![Frontier logo]()
$197
This CheapOair deal was found by Cheapflights users on 9/16. 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 10/153:38 pm -
1 stop21h 17m
Mon 10/192:50 pm -
1 stop20h 41m
Deal found 9/16![Frontier logo]()
$198
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/176:15 am -
1 stop6h 07m
Tue 10/208:00 am -
1 stop5h 14m
Deal found 9/16![American Airlines logo]()
$200
This Delta deal was found by Cheapflights users on 9/16. 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 10/106:00 am -
1 stop3h 42m
Tue 10/206:49 pm -
1 stop6h 06m
Deal found 9/16![Delta logo]()
$205
This Southwest deal was found by Cheapflights users on 9/16. 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 10/176:05 am -
1 stop5h 50m
Mon 10/197:45 pm -
1 stop5h 10m
Deal found 9/16![Southwest logo]()
$206
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 10/214:42 pm -
1 stop4h 12m
Tue 10/275:07 am -
1 stop5h 42m
Deal found 9/17![Alaska Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 9/16. 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 10/146:20 am -
1 stop5h 58m
Wed 10/2111:18 am -
1 stop5h 54m
Deal found 9/16![Delta logo]()
$277
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 September 17, 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 September 17, 2026.
This Southwest deal was found by Cheapflights users on 9/16. 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.
Wed 10/76:10 am -
1 stop4h 30m
Wed 10/147:05 pm -
1 stop4h 10m
Deal found 9/16![Southwest logo]()
$183
This Alaska Airlines deal was found by Cheapflights users on 9/12. 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 10/174:42 pm -
Nonstop2h 01m
Tue 10/202:51 pm -
Nonstop2h 11m
Deal found 9/12![Alaska Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/75:00 am -
1 stop7h 45m
Wed 11/112:51 pm -
1 stop7h 00m
Deal found 9/15![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 9/13. 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.
Thu 12/36:00 am -
1 stop3h 42m
Sun 12/611:44 am -
2 stops12h 15m
Deal found 9/13![Delta logo]()
$342
This Southwest deal was found by Cheapflights users on 9/17. 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.
Wed 10/283:10 pm -
2 stops7h 05m
Wed 11/1112:40 pm -
1 stop6h 10m
Deal found 9/17![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 9/14. 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 11/145:45 am -
2 stops7h 25m
Tue 11/172:50 pm -
2 stops6h 50m
Deal found 9/14![Southwest logo]()
$210
This Southwest deal was found by Cheapflights users on 9/12. 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 10/315:40 am -
2 stops6h 20m
Wed 11/412:40 pm -
2 stops9h 00m
Deal found 9/12![Southwest logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/137:25 am -
1 stop4h 21m
Wed 10/146:03 am -
1 stop7h 13m
Deal found 9/15![Alaska Airlines logo]()
$298
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/31:22 pm -
1 stop8h 11m
Sat 10/102:35 pm -
1 stop4h 11m
Deal found 9/15![United Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 9/13. 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 11/196:25 am -
1 stop5h 00m
Tue 11/248:45 pm -
1 stop4h 00m
Deal found 9/13![Southwest logo]()
$255
This Delta deal was found by Cheapflights users on 9/17. 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 10/56:00 pm -
1 stop5h 59m
Tue 10/69:30 am -
1 stop7h 42m
Deal found 9/17![Delta logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 11/136:00 am -
1 stop5h 30m
Mon 11/165:00 am -
1 stop4h 52m
Deal found 9/15![Alaska Airlines logo]()
$340
This Southwest deal was found by Cheapflights users on 9/13. 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 10/104:20 pm -
1 stop3h 35m
Sat 10/171:35 pm -
2 stops8h 10m
Deal found 9/13![Southwest logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 11/104:09 pm -
1 stop7h 50m
Wed 11/115:00 am -
1 stop6h 18m
Deal found 9/13![Alaska Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 9/14. 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 10/216:00 am -
1 stop5h 25m
Sat 10/241:17 pm -
1 stop4h 06m
Deal found 9/14![Delta logo]()
$408
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 10/21:24 pm -
1 stop7h 25m
Tue 10/61:05 pm -
1 stop7h 26m
Deal found 9/16![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 9/12. 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 11/196:25 am -
1 stop5h 00m
Mon 11/234:40 pm -
2 stops6h 20m
Deal found 9/12![Southwest logo]()
$298
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 10/1411:10 am -
1 stop5h 17m
Tue 10/204:28 pm -
1 stop5h 30m
Deal found 9/14![United Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 9/14. 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 10/136:00 am -
1 stop5h 22m
Tue 10/206:56 pm -
1 stop5h 59m
Deal found 9/14![Delta logo]()
$453
This Southwest deal was found by Cheapflights users on 9/13. 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 10/235:20 am -
2 stops7h 00m
Thu 10/296:50 pm -
2 stops6h 05m
Deal found 9/13![Southwest logo]()
$317
This Priceline deal was found by Cheapflights users on 9/13. 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.
Tue 10/137:25 am -
1 stop4h 56m
Tue 10/203:57 pm -
1 stop5h 18m
Deal found 9/13![Alaska Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/16. 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 11/215:00 am -
1 stop7h 25m
Fri 11/272:25 pm -
1 stop7h 26m
Deal found 9/16![United Airlines logo]()
$465
This Southwest deal was found by Cheapflights users on 9/16. 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 10/35:45 am -
1 stop3h 45m
Mon 10/56:50 pm -
2 stops6h 05m
Deal found 9/16![Southwest logo]()
$318
This Delta deal was found by Cheapflights users on 9/15. 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 9/301:04 pm -
1 stop5h 17m
Sun 10/45:55 pm -
1 stop6h 52m
Deal found 9/15![Delta logo]()
$469
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/202:13 pm -
1 stop19h 53m
Sat 10/2411:48 am -
1 stop7h 12m
Deal found 9/15![Alaska Airlines logo]()
$470
This Southwest deal was found by Cheapflights users on 9/12. 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 11/144:00 pm -
1 stop4h 05m
Wed 11/187:35 am -
1 stop4h 20m
Deal found 9/12![Southwest logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 12/115:00 am -
1 stop7h 20m
Sun 12/134:25 pm -
1 stop5h 46m
Deal found 9/13![United Airlines logo]()
$519
This Delta deal was found by Cheapflights users on 9/17. 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.
Thu 10/155:03 pm -
1 stop4h 08m
Sun 10/187:20 am -
1 stop6h 16m
Deal found 9/17![Delta logo]()
$522
This Southwest deal was found by Cheapflights users on 9/12. 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 10/104:20 pm -
1 stop4h 05m
Wed 10/145:40 am -
1 stop6h 20m
Deal found 9/12![Southwest logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 1/811:36 am -
1 stop6h 19m
Sun 1/107:37 pm -
1 stop16h 01m
Deal found 9/17![Alaska Airlines logo]()
$505
Last-minute flights from Ontario to IdahoDiscover last-minute flight deals from Ontario to Idaho. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Idaho. Data last updated September 17, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/14. 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 10/107:20 am -
1 stop4h 35m
Tue 10/201:25 pm -
1 stop6h 10m
Deal found 9/14![Southwest logo]()
$184
This Delta deal was found by Cheapflights users on 9/16. 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 10/106:00 am -
1 stop3h 42m
Tue 10/206:49 pm -
1 stop6h 06m
Deal found 9/16![Delta logo]()
$205
This Delta deal was found by Cheapflights users on 9/16. 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 10/146:20 am -
1 stop5h 58m
Wed 10/2111:18 am -
1 stop5h 54m
Deal found 9/16![Delta logo]()
$277
This CheapOair deal was found by Cheapflights users on 9/16. 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 10/153:38 pm -
1 stop21h 17m
Mon 10/192:50 pm -
1 stop20h 41m
Deal found 9/16![Frontier logo]()
$198
This Southwest deal was found by Cheapflights users on 9/14. 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 10/176:05 am -
1 stop5h 50m
Wed 10/214:40 pm -
1 stop6h 25m
Deal found 9/14![Southwest logo]()
$183
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/176:15 am -
1 stop6h 07m
Tue 10/208:00 am -
1 stop5h 14m
Deal found 9/16![American Airlines logo]()
$200
This Southwest deal was found by Cheapflights users on 9/16. 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 10/176:05 am -
1 stop5h 50m
Mon 10/197:45 pm -
1 stop5h 10m
Deal found 9/16![Southwest logo]()
$206
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 10/174:42 pm -
Nonstop2h 01m
Tue 10/202:51 pm -
Nonstop2h 11m
Deal found 9/16![Alaska Airlines logo]()
$207
This Southwest deal was found by Cheapflights users on 9/14. 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.
Wed 10/213:10 pm -
2 stops7h 05m
Wed 10/286:15 am -
2 stops6h 45m
Deal found 9/14![Southwest logo]()
$195
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 10/214:42 pm -
1 stop4h 12m
Tue 10/275:07 am -
1 stop5h 42m
Deal found 9/17![Alaska Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 9/16. 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.
Tue 10/275:40 am -
2 stops7h 05m
Sat 10/316:00 am -
2 stops8h 05m
Deal found 9/16![Southwest logo]()
$194
This Southwest deal was found by Cheapflights users on 9/17. 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.
Wed 10/283:10 pm -
2 stops7h 05m
Wed 11/1112:40 pm -
1 stop6h 10m
Deal found 9/17![Southwest logo]()
$188
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 September 17, 2026.
Search for one-way flight options from Ontario to Idaho. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Jetabroad deal was found by Cheapflights users on 9/16. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:25 pm -
1 stop19h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$81
This CheapOair deal was found by Cheapflights users on 9/16. 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.
Wed 10/285:07 pm -
1 stop19h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 9/12. 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 10/145:25 pm -
1 stop19h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$88
This Delta deal was found by Cheapflights users on 9/16. 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 10/205:03 pm -
1 stop5h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Delta logo]()
$92
This Frontier deal was found by Cheapflights users on 9/16. 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.
Thu 12/310:05 am -
1 stop6h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$94
This CheapOair deal was found by Cheapflights users on 9/16. 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.
Sat 11/1410:00 am -
1 stop26h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$98
This Jetabroad deal was found by Cheapflights users on 9/16. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:07 pm -
1 stop20h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 9/14. 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 10/223:38 pm -
1 stop21h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$103
This CheapOair deal was found by Cheapflights users on 9/15. 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.
Sat 12/510:32 pm -
1 stop18h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$104
This CheapOair deal was found by Cheapflights users on 9/16. 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 10/158:35 pm -
1 stop16h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$105
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/216:02 am -
1 stop6h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Alaska Airlines logo]()
$131
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:00 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Alaska Airlines logo]()
$143
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 September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $183 (Southwest) |
One-way from | $81 (Jetabroad) |
Popular in | February |
Cheapest in | April |
Average price | $319 |
Good round-trip deal | $207 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 September 17, 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
Sat 10/24
7:20 am-12:55 pm
1 stop4h 35m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$109
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Thu 11/12
6:00 am-2:27 pm
1 stop7h 27m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
OntarioSpokane
ONT Ontario - GEG Spokane
ONTGEG
Ontario
Tue 10/27
6:02 am-12:54 pm
1 stop6h 52m
Spokane
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$131
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Tue 10/20
4:42 pm-7:43 pm
Nonstop2h 01m
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
Sat 10/10
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
Sun 11/15
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
$139
Quickest round-trip
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Sat 11/14
4:04 pm-7:04 pm
Nonstop2h 00m
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
Sat 2/20
6:22 pm-9:39 pm
Nonstop2h 17m
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
Sat 10/17
8:03 am-12:58 pm
1 stop3h 55m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$154
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Thu 12/10
5:36 pm-8:41 pm
Nonstop2h 05m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$154
Showing 1-10 of 60 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-GEG
ONT-JAC
ONT-PIH
ONT-IDA
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-GEG
ONT-JAC
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 $411). 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 September 17, 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 $193 and $378 in October.The cheapest round-trip price found within the last 5 days was $183 on Southwest (Oct 6-Oct 10).
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 September 17, 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.
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
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
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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 September 17, 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 3 airlines flying from Ontario to Idaho
Discover the top 3 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 September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$288 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$153 | Average$332 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$166 | Average$358 | FlexibilityNo cancel fee | On-time63% |