$78+ Cheap flights from Idaho to Ontario (ONT)
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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ONT
Nov 11 — Nov 181
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Ontario 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 Idaho to Ontario
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Cheapest flights from Idaho to OntarioExplore the most affordable flight options available from Idaho to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 12, 2026.
Explore the most affordable flight options available from Idaho to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 12, 2026.
This CheapOair deal was found by Cheapflights users on 10/7. 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.
Mon 10/262:50 pm -
1 stop26h 31m
Wed 10/2810:35 am -
1 stop26h 19m
Deal found 10/7![Frontier logo]()
$163
This Cheapflightsfares deal was found by Cheapflights users on 10/7. 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 10/92:50 pm -
1 stop19h 19m
Sat 10/105:25 pm -
1 stop19h 30m
Deal found 10/7![Frontier logo]()
$166
This Delta deal was found by Cheapflights users on 10/7. 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 11/71:06 pm -
1 stop4h 17m
Sat 11/146:00 am -
1 stop3h 42m
Deal found 10/7![Delta logo]()
$167
This CheapOair deal was found by Cheapflights users on 10/7. 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 10/82:50 pm -
1 stop26h 40m
Thu 10/153:38 pm -
1 stop21h 17m
Deal found 10/7![Frontier logo]()
$172
This Delta deal was found by Cheapflights users on 10/7. 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 11/75:14 pm -
1 stop5h 57m
Thu 11/126:00 am -
1 stop3h 42m
Deal found 10/7![Delta logo]()
$173
This Delta deal was found by Cheapflights users on 10/8. 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 11/36:49 pm -
1 stop4h 22m
Wed 12/95:04 pm -
1 stop6h 22m
Deal found 10/8![Delta logo]()
$175
This CheapOair deal was found by Cheapflights users on 10/8. 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 10/92:50 pm -
1 stop19h 19m
Wed 10/1411:26 am -
1 stop25h 29m
Deal found 10/8![Frontier logo]()
$178
This Southwest deal was found by Cheapflights users on 10/8. 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 10/296:50 am -
1 stop5h 25m
Tue 11/33:50 pm -
1 stop4h 45m
Deal found 10/8![Southwest logo]()
$183
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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 10/162:50 pm -
1 stop19h 19m
Mon 10/198:00 am -
1 stop4h 55m
Deal found 10/8![Frontier logo]()
$190
This Southwest deal was found by Cheapflights users on 10/8. 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 11/33:45 pm -
2 stops6h 35m
Wed 12/93:20 pm -
2 stops6h 25m
Deal found 10/8![Southwest logo]()
$193
This Delta deal was found by Cheapflights users on 10/8. 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 12/55:11 pm -
1 stop6h 18m
Tue 12/86:00 am -
1 stop3h 44m
Deal found 10/8![Delta logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 11/256:37 pm -
1 stop13h 43m
Wed 12/27:26 pm -
2 stops40h 25m
Deal found 10/7![Multiple Airlines logo]()
$370
Best flights from Idaho to OntarioDiscover carefully curated flight deals from Idaho to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
Discover carefully curated flight deals from Idaho to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
This Delta deal was found by Cheapflights users on 10/7. 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 11/46:49 pm -
1 stop4h 22m
Wed 11/116:00 am -
1 stop3h 42m
Deal found 10/7![Delta logo]()
$175
This Southwest deal was found by Cheapflights users on 10/7. 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 11/47:20 am -
1 stop4h 10m
Wed 11/113:20 pm -
1 stop6h 55m
Deal found 10/7![Southwest logo]()
$183
This United Airlines deal was found by Cheapflights users on 10/11. 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 11/32:51 pm -
1 stop7h 00m
Sat 11/79:25 am -
1 stop6h 19m
Deal found 10/11![United Airlines logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 10/8. 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 10/304:18 pm -
1 stop18h 59m
Tue 11/34:06 pm -
Nonstop2h 00m
Deal found 10/8![Alaska Airlines logo]()
$310
This Southwest deal was found by Cheapflights users on 10/7. 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 11/103:45 pm -
2 stops6h 20m
Sat 11/144:00 pm -
1 stop3h 40m
Deal found 10/7![Southwest logo]()
$188
This Delta deal was found by Cheapflights users on 10/8. 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.
Fri 11/136:45 pm -
1 stop6h 04m
Sun 11/156:00 am -
1 stop3h 42m
Deal found 10/8![Delta logo]()
$245
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:00 pm -
1 stop4h 33m
Tue 11/175:00 am -
1 stop7h 45m
Deal found 10/12![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 10/12. 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 10/245:30 am -
1 stop4h 30m
Mon 10/264:25 pm -
1 stop6h 45m
Deal found 10/12![Southwest logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 10/8. 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 11/52:08 pm -
Nonstop2h 16m
Sun 11/86:00 am -
1 stop26h 07m
Deal found 10/8![Alaska Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 10/11. 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 12/197:25 pm -
1 stop3h 50m
Sat 12/266:45 pm -
1 stop4h 00m
Deal found 10/11![Southwest logo]()
$315
This Southwest deal was found by Cheapflights users on 10/10. 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 10/236:50 am -
1 stop5h 25m
Sat 10/247:35 am -
2 stops8h 00m
Deal found 10/10![Southwest logo]()
$346
This Delta deal was found by Cheapflights users on 10/9. 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 10/2412:19 pm -
2 stops10h 24m
Wed 10/286:00 pm -
1 stop5h 06m
Deal found 10/9![Delta logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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 11/66:04 am -
1 stop18h 02m
Sat 11/76:00 am -
1 stop8h 18m
Deal found 10/7![Alaska Airlines logo]()
$453
This Alaska Airlines deal was found by Cheapflights users on 10/11. 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 1/233:58 pm -
1 stop5h 04m
Wed 1/277:00 am -
1 stop7h 21m
Deal found 10/11![Alaska Airlines logo]()
$453
This Delta deal was found by Cheapflights users on 10/10. 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.
Fri 11/277:20 am -
1 stop6h 00m
Tue 12/16:00 am -
1 stop5h 14m
Deal found 10/10![Delta logo]()
$493
This United Airlines deal was found by Cheapflights users on 10/10. 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 12/22:45 pm -
1 stop7h 26m
Fri 12/45:00 am -
1 stop8h 04m
Deal found 10/10![United Airlines logo]()
$567
This Alaska Airlines deal was found by Cheapflights users on 10/8. 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 11/111:53 pm -
1 stop5h 24m
Sun 11/156:00 am -
1 stop15h 54m
Deal found 10/8![Alaska Airlines logo]()
$489
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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 1/163:58 pm -
1 stop5h 04m
Sun 1/177:10 am -
1 stop5h 09m
Deal found 10/7![Alaska Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 10/9. 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 1/152:41 pm -
1 stop7h 19m
Tue 1/191:42 pm -
1 stop6h 54m
Deal found 10/9![United Airlines logo]()
$603
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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 11/51:53 pm -
1 stop10h 13m
Thu 11/126:00 am -
1 stop8h 18m
Deal found 10/7![Alaska Airlines logo]()
$519
This Delta deal was found by Cheapflights users on 10/8. 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 10/293:19 pm -
2 stops8h 24m
Fri 10/309:45 am -
1 stop3h 50m
Deal found 10/8![Delta logo]()
$694
This United Airlines deal was found by Cheapflights users on 10/10. 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 11/272:34 pm -
1 stop7h 17m
Mon 11/305:00 am -
1 stop7h 53m
Deal found 10/10![United Airlines logo]()
$696
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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 11/133:55 pm -
2 stops8h 11m
Sat 11/146:00 am -
1 stop8h 18m
Deal found 10/7![Alaska Airlines logo]()
$536
This Alaska Airlines deal was found by Cheapflights users on 10/8. 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 1/157:37 pm -
1 stop28h 04m
Tue 1/1911:36 am -
1 stop6h 19m
Deal found 10/8![Alaska Airlines logo]()
$546
This Alaska Airlines deal was found by Cheapflights users on 10/10. 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 1/173:58 pm -
1 stop5h 04m
Mon 1/187:10 am -
1 stop5h 09m
Deal found 10/10![Alaska Airlines logo]()
$579
This Alaska Airlines deal was found by Cheapflights users on 10/8. 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 10/2911:48 am -
1 stop7h 12m
Tue 11/34:06 pm -
2 stops17h 45m
Deal found 10/8![Alaska Airlines logo]()
$627
Last-minute flights from Idaho to OntarioDiscover last-minute flight deals from Idaho to Ontario. Data last updated October 12, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Ontario. Data last updated October 12, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 10/7. 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 10/82:50 pm -
1 stop26h 40m
Thu 10/153:38 pm -
1 stop21h 17m
Deal found 10/7![Frontier logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 10/7. 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 10/92:50 pm -
1 stop19h 19m
Sat 10/105:25 pm -
1 stop19h 30m
Deal found 10/7![Frontier logo]()
$166
This CheapOair deal was found by Cheapflights users on 10/8. 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 10/92:50 pm -
1 stop19h 19m
Wed 10/1411:26 am -
1 stop25h 29m
Deal found 10/8![Frontier logo]()
$178
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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 10/162:50 pm -
1 stop19h 19m
Mon 10/198:00 am -
1 stop4h 55m
Deal found 10/8![Frontier logo]()
$190
This CheapOair deal was found by Cheapflights users on 10/7. 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.
Mon 10/262:50 pm -
1 stop26h 31m
Wed 10/2810:35 am -
1 stop26h 19m
Deal found 10/7![Frontier logo]()
$163
This Southwest deal was found by Cheapflights users on 10/8. 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 10/296:50 am -
1 stop5h 25m
Tue 11/33:50 pm -
1 stop4h 45m
Deal found 10/8![Southwest logo]()
$183
This Delta deal was found by Cheapflights users on 10/8. 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 11/36:49 pm -
1 stop4h 22m
Wed 12/95:04 pm -
1 stop6h 22m
Deal found 10/8![Delta logo]()
$175
This Southwest deal was found by Cheapflights users on 10/8. 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 11/33:45 pm -
2 stops6h 35m
Wed 12/93:20 pm -
2 stops6h 25m
Deal found 10/8![Southwest logo]()
$193
This Delta deal was found by Cheapflights users on 10/7. 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 11/71:06 pm -
1 stop4h 17m
Sat 11/146:00 am -
1 stop3h 42m
Deal found 10/7![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 10/7. 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 11/75:14 pm -
1 stop5h 57m
Thu 11/126:00 am -
1 stop3h 42m
Deal found 10/7![Delta logo]()
$173
This Delta deal was found by Cheapflights users on 10/7. 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 11/75:14 pm -
1 stop5h 57m
Fri 11/135:04 pm -
1 stop6h 06m
Deal found 10/7![Delta logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 11/256:37 pm -
1 stop13h 43m
Wed 12/27:26 pm -
2 stops40h 25m
Deal found 10/7![Multiple Airlines logo]()
$370
One-way flights from Idaho to OntarioSearch for one-way flight options from Idaho to Ontario. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
Search for one-way flight options from Idaho to Ontario. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Mon 12/79:51 pm -
1 stop21h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Frontier logo]()
$78
This CheapOair deal was found by Cheapflights users on 10/7. 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 12/39:51 pm -
1 stop21h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Frontier logo]()
$83
This Delta deal was found by Cheapflights users on 10/8. 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 11/46:49 pm -
1 stop4h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Delta logo]()
$92
This Southwest deal was found by Cheapflights users on 10/8. 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.
Mon 12/712:40 pm -
2 stops8h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Southwest logo]()
$97
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Sun 12/69:51 pm -
1 stop15h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Frontier logo]()
$100
This CheapOair deal was found by Cheapflights users on 10/7. 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 11/52:49 pm -
1 stop26h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Frontier logo]()
$105
This Delta deal was found by Cheapflights users on 10/8. 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.
Fri 11/136:45 pm -
1 stop6h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Delta logo]()
$112
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Tue 11/106:06 am -
1 stop7h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![American Airlines logo]()
$114
This Southwest deal was found by Cheapflights users on 10/11. 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 11/103:45 pm -
2 stops6h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Southwest logo]()
$119
This Alaska Airlines deal was found by Cheapflights users on 10/11. 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 11/134:16 pm -
1 stop7h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Alaska Airlines logo]()
$124
This Super.com deal was found by Cheapflights users on 10/10. 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.
Sun 10/182:50 pm -
1 stop26h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Frontier logo]()
$126
This Delta deal was found by Cheapflights users on 10/8. 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 11/107:20 am -
2 stops10h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Delta logo]()
$217
Find flight deals from Idaho to Ontario
Keep the following information in mind while searching for Idaho to Ontario flight deals. Data was last updated October 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $163 (CheapOair) |
One-way from | $78 (Cheapflightsfares) |
Popular in | July |
Cheapest in | January |
Average price | $267 |
Good round-trip deal | $277 or less |
Good one-way deal | $194 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Ontario 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 October 12, 2026.
Use the filters below to find and compare flights from Idaho to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Thu 12/17
6:00 am-10:40 am
1 stop5h 40m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$92
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 11/4
6:49 pm-10:11 pm
1 stop4h 22m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$92
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Fri 11/13
6:45 pm-11:49 pm
1 stop6h 04m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$112
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 11/11
6:45 pm-11:49 pm
1 stop6h 04m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$112
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Fri 1/8
5:46 am-10:00 am
1 stop5h 14m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$124
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Thu 11/12
4:16 pm-11:06 pm
1 stop7h 50m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$124
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Sat 11/14
12:49 pm-6:17 pm
1 stop6h 28m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$124
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Tue 11/10
6:37 am-11:18 am
1 stop5h 41m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$124
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Sun 11/8
5:43 am-9:52 am
1 stop5h 09m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$124
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Thu 10/29
11:32 am-4:23 pm
1 stop5h 51m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$126
Showing 1-10 of 56 resultsSorted by cheapest first
Best time to book a flight from Idaho to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Idaho with our price prediction graph.
BOI-ONT
SUN-ONT
IDA-ONT
LWS-ONT
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 Idaho to Ontario
USID-ONT
BOI-ONT
SUN-ONT
IDA-ONT
LWS-ONT
What is the cheapest month to book a flight from Idaho to Ontario?
Currently, April is the cheapest month in which you can book a flight from Idaho to Ontario (average of $262). Flying from Idaho to Ontario in December is currently the most expensive (average of $482). 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 ID to ONT?
Find hourly flight availability from Idaho to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 12, 2026.
When flying from Idaho to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Idaho to Ontario
Explore weekly flight availability from Idaho to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 12, 2026.
The most flights from USID to ONT are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
How far ahead should I book a flight from Idaho to Ontario?
To ensure you get the cheapest price possible for a flight from Idaho to Ontario, you should look to book at least 35 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.
Related info for your journey
Find useful and relevant information for your journey from Idaho to Ontario. 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
Ontario flight routes
Other flight options
Popular flights
Top destinations
Alternative routes for Idaho to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Ontario by cabin class
Find flights from Idaho to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 12, 2026.
Idaho and Ontario flights
Browse other Idaho and Ontario flight options. Last updated on October 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Ontario flights
Consider these flights traveling from Idaho to Ontario.
Top 5 airlines flying from Idaho to Ontario
Discover the top 5 airlines that operate flights from Idaho to Ontario. 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 October 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$242 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$121 | Average$378 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$282 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$143 | Average$441 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$226 | Average$410 | FlexibilityNo cancel fee | On-time63% |