$96+ Cheap flights from Ontario (ONT) to Idaho
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Sep 27 — Oct 41
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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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
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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 August 28, 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 August 28, 2026.
This Frontier deal was found by Cheapflights users on 8/24. 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.
Tue 8/256:00 am -
1 stop5h 29m
Tue 9/11:24 pm -
1 stop11h 26m
Deal found 8/24![Frontier logo]()
$194
This Alaska Airlines deal was found by Cheapflights users on 8/26. 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 10/104:42 pm -
Nonstop2h 01m
Tue 10/132:51 pm -
Nonstop2h 11m
Deal found 8/26![Alaska Airlines logo]()
$197
This Booking.com deal was found by Cheapflights users on 8/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:42 pm -
Nonstop2h 01m
Sat 10/172:51 pm -
Nonstop2h 11m
Deal found 8/27![Alaska Airlines logo]()
$201
This Alaska Airlines deal was found by Cheapflights users on 8/27. 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 8/27![Alaska Airlines logo]()
$207
This Frontier deal was found by Cheapflights users on 8/24. 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.
Tue 8/256:00 am -
1 stop5h 29m
Sun 8/3012:24 pm -
1 stop12h 26m
Deal found 8/24![Frontier logo]()
$209
This Alaska Airlines deal was found by Cheapflights users on 8/27. 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 10/24:50 pm -
Nonstop1h 55m
Sat 10/172:51 pm -
Nonstop2h 11m
Deal found 8/27![Alaska Airlines logo]()
$211
This Southwest deal was found by Cheapflights users on 8/27. 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 9/265:40 am -
1 stop5h 35m
Tue 9/293:40 pm -
2 stops6h 20m
Deal found 8/27![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 8/27. 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 10/226:00 am -
1 stop3h 42m
Tue 10/276:49 pm -
1 stop6h 06m
Deal found 8/27![Delta logo]()
$217
This CheapOair deal was found by Cheapflights users on 8/27. 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 9/1610:04 am -
1 stop26h 51m
Sun 9/202:50 pm -
1 stop27h 09m
Deal found 8/27![Frontier logo]()
$218
This CheapOair deal was found by Cheapflights users on 8/25. 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 9/910:04 am -
1 stop26h 51m
Mon 9/142:50 pm -
1 stop27h 09m
Deal found 8/25![Frontier logo]()
$219
This Southwest deal was found by Cheapflights users on 8/25. 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 9/249:55 am -
1 stop4h 05m
Tue 9/297:40 am -
2 stops6h 00m
Deal found 8/25![Southwest logo]()
$222
This Delta deal was found by Cheapflights users on 8/23. 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.
Sun 9/136:00 am -
1 stop3h 47m
Sat 9/191:09 pm -
1 stop4h 26m
Deal found 8/23![Delta logo]()
$304
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 August 28, 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 August 28, 2026.
This Delta deal was found by Cheapflights users on 8/24. 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 10/241:35 pm -
1 stop4h 11m
Tue 10/276:49 pm -
1 stop6h 06m
Deal found 8/24![Delta logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 8/25. 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 9/254:50 pm -
Nonstop1h 55m
Mon 9/283:02 pm -
Nonstop2h 08m
Deal found 8/25![Alaska Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 8/27. 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 10/291:05 pm -
1 stop4h 05m
Sun 11/15:35 pm -
1 stop6h 20m
Deal found 8/27![Southwest logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 9/108:24 pm -
1 stop14h 36m
Mon 9/141:45 pm -
1 stop20h 24m
Deal found 8/26![Multiple Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 8/26. 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 10/35:00 am -
1 stop7h 30m
Fri 10/92:05 pm -
1 stop7h 53m
Deal found 8/26![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 8/23. 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 stop3h 42m
Mon 11/236:45 pm -
1 stop6h 04m
Deal found 8/23![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 8/25. 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 9/234:45 pm -
1 stop4h 45m
Wed 9/3011:40 am -
1 stop5h 20m
Deal found 8/25![Southwest logo]()
$230
This Alaska Airlines deal was found by Cheapflights users on 8/24. 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 9/254:50 pm -
Nonstop1h 55m
Sun 9/276:23 am -
1 stop5h 53m
Deal found 8/24![Alaska Airlines logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 8/27. 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.
Sun 10/116:02 am -
1 stop5h 33m
Sun 10/184:54 pm -
Nonstop2h 11m
Deal found 8/27![Alaska Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 8/23. 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 11/181:55 pm -
1 stop7h 35m
Mon 11/234:40 pm -
2 stops6h 15m
Deal found 8/23![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 8/23. 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.
Sun 9/136:00 am -
1 stop3h 47m
Sat 9/191:09 pm -
1 stop4h 26m
Deal found 8/23![Delta logo]()
$304
This Southwest deal was found by Cheapflights users on 8/25. 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 9/52:55 pm -
1 stop6h 10m
Wed 9/93:30 pm -
2 stops6h 30m
Deal found 8/25![Southwest logo]()
$281
This Alaska Airlines deal was found by Cheapflights users on 8/26. 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 10/96:02 am -
1 stop8h 21m
Sun 10/114:54 pm -
Nonstop2h 11m
Deal found 8/26![Alaska Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 8/23. 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 9/166:00 am -
1 stop6h 06m
Sat 9/195:49 pm -
1 stop4h 51m
Deal found 8/23![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 8/25. 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 11/75:03 pm -
1 stop5h 08m
Wed 11/113:26 pm -
1 stop7h 34m
Deal found 8/25![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 8/22. 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 9/176:02 am -
1 stop6h 37m
Mon 9/2112:49 pm -
1 stop4h 29m
Deal found 8/22![Alaska Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 8/24. 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 10/226:55 pm -
1 stop4h 45m
Mon 10/265:30 am -
1 stop5h 45m
Deal found 8/24![Southwest logo]()
$339
This United Airlines deal was found by Cheapflights users on 8/24. 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 10/35:00 am -
1 stop7h 30m
Sat 10/102:05 pm -
1 stop7h 53m
Deal found 8/24![United Airlines logo]()
$473
This Alaska Airlines deal was found by Cheapflights users on 8/23. 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 stop4h 49m
Wed 11/1112:41 pm -
1 stop5h 36m
Deal found 8/23![Alaska Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Thu 12/31:40 pm -
1 stop6h 33m
Mon 12/73:30 pm -
1 stop5h 59m
Deal found 8/22![United Airlines logo]()
$479
This Southwest deal was found by Cheapflights users on 8/26. 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 10/244:20 pm -
1 stop4h 00m
Sat 10/315:45 am -
2 stops7h 00m
Deal found 8/26![Southwest logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 8/25. 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 9/216:02 am -
1 stop6h 40m
Tue 9/2910:36 am -
1 stop5h 34m
Deal found 8/25![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/23. 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 11/56:00 am -
1 stop5h 25m
Sun 11/81:17 pm -
1 stop4h 06m
Deal found 8/23![Delta logo]()
$381
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Thu 11/125:00 am -
1 stop7h 25m
Mon 11/164:10 pm -
1 stop5h 41m
Deal found 8/26![United Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 8/27. 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 9/307:12 am -
1 stop4h 36m
Mon 10/54:41 pm -
1 stop7h 01m
Deal found 8/27![Alaska Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Sun 11/15:00 am -
1 stop7h 25m
Sun 11/84:10 pm -
1 stop5h 41m
Deal found 8/26![United Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 8/25. 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.
Sun 9/201:04 pm -
1 stop5h 17m
Wed 9/235:55 pm -
1 stop6h 52m
Deal found 8/25![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/23. 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.
Thu 11/121:29 pm -
1 stop6h 28m
Sun 11/154:10 pm -
1 stop5h 41m
Deal found 8/23![United Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 8/24. 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 9/169:52 am -
1 stop5h 58m
Tue 9/295:55 pm -
1 stop6h 52m
Deal found 8/24![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Tue 9/81:18 pm -
1 stop6h 22m
Tue 9/229:28 am -
1 stop5h 33m
Deal found 8/22![United Airlines logo]()
$479
Last-minute flights from Ontario to IdahoDiscover last-minute flight deals from Ontario to Idaho. Data last updated August 28, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Idaho. Data last updated August 28, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/24. 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.
Tue 9/16:00 am -
1 stop5h 29m
Sun 9/612:24 pm -
1 stop12h 26m
Deal found 8/24![Frontier logo]()
$209
This CheapOair deal was found by Cheapflights users on 8/25. 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 9/910:04 am -
1 stop26h 51m
Mon 9/142:50 pm -
1 stop27h 09m
Deal found 8/25![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 8/25. 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.
Thu 9/108:24 pm -
1 stop16h 31m
Mon 9/142:50 pm -
1 stop19h 19m
Deal found 8/25![Frontier logo]()
$224
This Delta deal was found by Cheapflights users on 8/25. 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 9/106:00 am -
1 stop3h 47m
Sat 9/191:09 pm -
1 stop4h 26m
Deal found 8/25![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 8/23. 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.
Sun 9/136:00 am -
1 stop3h 47m
Sat 9/191:09 pm -
1 stop4h 26m
Deal found 8/23![Delta logo]()
$304
This CheapOair deal was found by Cheapflights users on 8/27. 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 9/1610:04 am -
1 stop26h 51m
Sun 9/202:50 pm -
1 stop27h 09m
Deal found 8/27![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 9/178:00 am -
1 stop4h 55m
Sun 9/202:50 pm -
1 stop17h 14m
Deal found 8/25![Frontier logo]()
$228
This CheapOair deal was found by Cheapflights users on 8/24. 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 9/2310:04 am -
1 stop26h 51m
Fri 9/252:50 pm -
1 stop19h 19m
Deal found 8/24![Frontier logo]()
$229
This Southwest deal was found by Cheapflights users on 8/25. 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 9/245:45 pm -
1 stop4h 55m
Tue 9/293:40 pm -
1 stop6h 20m
Deal found 8/25![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 8/26. 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 9/254:50 pm -
1 stop6h 05m
Fri 10/22:00 pm -
1 stop4h 35m
Deal found 8/26![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 8/27. 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 9/262:55 pm -
1 stop6h 10m
Tue 9/297:05 am -
1 stop4h 20m
Deal found 8/27![Southwest logo]()
$207
This Booking.com deal was found by Cheapflights users on 8/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:50 pm -
Nonstop1h 55m
Sat 10/102:51 pm -
Nonstop2h 11m
Deal found 8/25![Alaska Airlines logo]()
$197
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 August 28, 2026.
Search for one-way flight options from Ontario to Idaho. Find affordable one-way fares based on user searches. Data last updated August 28, 2026.
This Super.com deal was found by Cheapflights users on 8/26. 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.
Tue 9/86:00 am -
1 stop5h 29m
Deal found 8/26![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 8/24. 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.
Tue 9/16:00 am -
1 stop5h 29m
Deal found 8/24![Frontier logo]()
$97
This Super.com deal was found by Cheapflights users on 8/27. 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.
Sat 9/122:30 pm -
1 stop22h 25m
Deal found 8/27![Frontier logo]()
$101
This Super.com deal was found by Cheapflights users on 8/26. 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.
Sat 9/57:56 pm -
1 stop14h 33m
Deal found 8/26![Frontier logo]()
$102
This Trip.com deal was found by Cheapflights users on 8/26. 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.
Wed 11/115:07 pm -
1 stop19h 47m
Deal found 8/26![Frontier logo]()
$103
This Southwest deal was found by Cheapflights users on 8/25. 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 10/175:30 am -
1 stop5h 15m
Deal found 8/25![Southwest logo]()
$104
This Trip.com deal was found by Cheapflights users on 8/24. 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.
Wed 9/232:30 pm -
1 stop22h 25m
Deal found 8/24![Frontier logo]()
$105
This CheapOair deal was found by Cheapflights users on 8/27. 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 10/145:25 pm -
1 stop19h 30m
Deal found 8/27![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 8/26. 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.
Mon 9/218:00 am -
1 stop4h 55m
Deal found 8/26![Frontier logo]()
$110
This Super.com deal was found by Cheapflights users on 8/26. 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.
Mon 9/148:00 am -
1 stop4h 55m
Deal found 8/26![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 8/26. 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.
Fri 10/168:00 am -
1 stop4h 55m
Deal found 8/26![Frontier logo]()
$112
This Delta deal was found by Cheapflights users on 8/25. 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.
Sun 10/116:00 am -
1 stop3h 42m
Deal found 8/25![Delta logo]()
$114
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 August 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Alaska Airlines) |
One-way from | $96 (Super.com) |
Popular in | July |
Cheapest in | April |
Average price | $307 |
Good round-trip deal | $297 or less |
Good one-way deal | $173 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 August 28, 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
1:35 pm-6:46 pm
1 stop4h 11m
Boise Air Term. Gowen Fld
Tue 10/27
6:49 pm-11:55 pm
1 stop6h 06m
$207
Quickest round-trip
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Fri 9/25
4:50 pm-7:45 pm
Nonstop1h 55m
Boise Air Term. Gowen Fld
Mon 9/28
3:02 pm-4:10 pm
Nonstop2h 08m
$217
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Wed 11/18
6:00 am-10:42 am
1 stop3h 42m
Boise Air Term. Gowen Fld
Mon 11/23
6:45 pm-11:49 pm
1 stop6h 04m
$217
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Thu 10/29
1:05 pm-6:10 pm
1 stop4h 05m
Boise Air Term. Gowen Fld
Sun 11/1
5:35 pm-10:55 pm
1 stop6h 20m
$227
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Wed 9/23
4:45 pm-10:30 pm
1 stop4h 45m
Boise Air Term. Gowen Fld
Wed 9/30
11:40 am-4:00 pm
1 stop5h 20m
$230
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Fri 9/25
4:50 pm-7:45 pm
Nonstop1h 55m
Boise Air Term. Gowen Fld
Sun 9/27
6:23 am-11:16 am
1 stop5h 53m
$257
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Sun 10/11
6:02 am-12:35 pm
1 stop5h 33m
Boise Air Term. Gowen Fld
Sun 10/18
4:54 pm-6:05 pm
Nonstop2h 11m
$258
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Wed 11/18
1:55 pm-10:30 pm
1 stop7h 35m
Boise Air Term. Gowen Fld
Mon 11/23
4:40 pm-9:55 pm
2 stops6h 15m
$276
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Sat 9/5
2:55 pm-10:05 pm
1 stop6h 10m
Boise Air Term. Gowen Fld
Wed 9/9
3:30 pm-9:00 pm
2 stops6h 30m
$281
OntarioBoise
ONT Ontario - BOI Boise Air Term. Gowen Fld
ONTBOI
Ontario
Fri 10/9
6:02 am-3:23 pm
1 stop8h 21m
Boise Air Term. Gowen Fld
Sun 10/11
4:54 pm-6:05 pm
Nonstop2h 11m
$287
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-TWF
ONT-PIH
ONT-GEG
ONT-JAC
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-TWF
ONT-PIH
ONT-GEG
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 August 28, 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 $234 and $378 in October.The cheapest round-trip price found within the last 5 days was $197 on Alaska Airlines (Oct 10-Oct 13).
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 42 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 August 28, 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
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
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.
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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 August 28, 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 August 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$290 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$153 | Average$353 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$166 | Average$353 | FlexibilityNo cancel fee | On-time63% |