$99+ Cheap flights from Boise to Ontario (BOI - ONT)
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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ONT
Jun 24 — Jul 11
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boise 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Ontario are usually found in January or August, booked 47 days in advance, depart on a Saturday or Tuesday and return on a Tuesday
Cheap flight deals from Boise to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boise to OntarioExplore the most affordable flight options available from Boise to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 25, 2026.
Explore the most affordable flight options available from Boise to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 25, 2026.
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:35 am
BOI
- ONT
1 stop5h 39m
Delta
Wed 9/95:05 pm
ONT
- BOI
1 stop4h 51m
Delta
Deal found 5/22![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:45 pm
BOI
- ONT
1 stop6h 59m
Delta
Fri 9/115:05 pm
ONT
- BOI
1 stop4h 51m
Delta
Deal found 5/22![Delta logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 11/54:48 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Thu 11/125:12 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 5/22. 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.
Tue 9/16:23 am
BOI
- ONT
1 stop5h 41m
Alaska Airlines
Sat 9/124:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 5/22. 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.
Tue 9/16:23 am
BOI
- ONT
1 stop5h 41m
Alaska Airlines
Mon 9/74:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 5/22. 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.
Tue 8/182:31 pm
BOI
- ONT
Nonstop2h 07m
Alaska Airlines
Mon 9/74:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$242
This CheapOair deal was found by Cheapflights users on 5/24. 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.
Sat 10/172:51 pm
BOI
- ONT
Nonstop2h 11m
Alaska Airlines
Sun 11/15:52 pm
ONT
- BOI
1 stop4h 54m
Alaska Airlines
Deal found 5/24![Alaska Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:35 am
BOI
- ONT
1 stop5h 39m
Delta
Mon 9/75:05 pm
ONT
- BOI
1 stop5h 51m
Delta
Deal found 5/22![Delta logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 9/293:02 pm
BOI
- ONT
Nonstop2h 08m
Alaska Airlines
Wed 9/306:02 am
ONT
- BOI
1 stop5h 33m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:45 pm
BOI
- ONT
1 stop5h 59m
Delta
Mon 9/75:05 pm
ONT
- BOI
1 stop5h 51m
Delta
Deal found 5/22![Delta logo]()
$262
This Alaska Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 11/54:21 pm
BOI
- ONT
1 stop7h 33m
Alaska Airlines
Sun 11/155:12 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$267
This Frontier deal was found by Cheapflights users on 5/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/251:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Thu 7/26:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/22![Frontier logo]()
$268
Best flights from Boise to OntarioDiscover carefully curated flight deals from Boise to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 25, 2026.
Discover carefully curated flight deals from Boise to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 25, 2026.
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/268:45 am
BOI
- ONT
1 stop4h 44m
Delta
Tue 9/296:00 am
ONT
- BOI
1 stop5h 14m
Delta
Deal found 5/22![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 5/22. 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 9/244:17 pm
BOI
- ONT
1 stop8h 07m
Alaska Airlines
Tue 9/294:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 5/22. 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 9/37:05 pm
BOI
- ONT
1 stop4h 54m
United Airlines
Tue 9/89:01 am
ONT
- BOI
1 stop5h 30m
United Airlines
Deal found 5/22![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 5/24. 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.
Fri 7/33:25 pm
BOI
- ONT
1 stop5h 55m
Southwest
Mon 7/66:30 pm
ONT
- BOI
1 stop4h 50m
Southwest
Deal found 5/24![Southwest logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 5/22. 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.
Tue 8/182:31 pm
BOI
- ONT
Nonstop2h 07m
Alaska Airlines
Mon 9/74:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$242
This Delta deal was found by Cheapflights users on 5/25. 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 11/51:15 pm
BOI
- ONT
1 stop3h 57m
Delta
Sun 11/85:05 pm
ONT
- BOI
1 stop5h 59m
Delta
Deal found 5/25![Delta logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 5/25. 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 7/36:23 am
BOI
- ONT
1 stop5h 51m
Alaska Airlines
Wed 8/194:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/25![Alaska Airlines logo]()
$292
This United Airlines deal was found by Cheapflights users on 5/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:05 pm
BOI
- ONT
1 stop4h 32m
United Airlines
Wed 8/199:01 am
ONT
- BOI
1 stop5h 30m
United Airlines
Deal found 5/25![United Airlines logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 10/232:51 pm
BOI
- ONT
Nonstop2h 11m
Alaska Airlines
Sun 11/15:52 pm
ONT
- BOI
1 stop4h 54m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$292
This Southwest deal was found by Cheapflights users on 5/23. 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.
Thu 7/1612:20 pm
BOI
- ONT
1 stop6h 40m
Southwest
Sun 7/197:00 pm
ONT
- BOI
1 stop5h 25m
Southwest
Deal found 5/23![Southwest logo]()
$367
This Alaska Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/136:23 am
BOI
- ONT
1 stop5h 51m
Alaska Airlines
Tue 6/164:18 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$382
Last-minute flights from Boise to OntarioDiscover last-minute flight deals from Boise to Ontario. Data last updated May 25, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Ontario. Data last updated May 25, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/111:25 pm
BOI
- ONT
1 stop21h 40m
Frontier
Sun 6/146:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/21![Frontier logo]()
$318
This Alaska Airlines deal was found by Cheapflights users on 5/23. 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.
Sat 6/136:10 pm
BOI
- ONT
1 stop6h 01m
Alaska Airlines
Sat 6/204:18 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/23![Alaska Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 5/24. 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.
Mon 6/153:25 pm
BOI
- ONT
1 stop5h 55m
Southwest
Wed 6/177:20 pm
ONT
- BOI
1 stop4h 10m
Southwest
Deal found 5/24![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Tue 6/167:05 pm
BOI
- ONT
1 stop4h 32m
United Airlines
Sat 6/201:40 pm
ONT
- BOI
1 stop7h 00m
United Airlines
Deal found 5/24![United Airlines logo]()
$322
This CheapOair deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/181:25 pm
BOI
- ONT
1 stop21h 40m
Frontier
Thu 6/256:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/21![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 5/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/251:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Thu 7/26:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/22![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/251:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Sat 6/2710:50 am
ONT
- BOI
1 stop24h 40m
Frontier
Deal found 5/21![Frontier logo]()
$299
This CheapOair deal was found by Cheapflights users on 5/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/272:31 pm
BOI
- ONT
Nonstop2h 07m
Alaska Airlines
Sat 7/44:18 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$287
This CheapOair deal was found by Cheapflights users on 5/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/281:25 pm
BOI
- ONT
1 stop21h 40m
Frontier
Thu 7/26:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/22![Frontier logo]()
$328
This Frontier deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/301:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Sun 7/126:00 am
ONT
- BOI
1 stop5h 29m
Frontier
Deal found 5/20![Frontier logo]()
$313
This Booking.com deal was found by Cheapflights users on 5/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/301:25 pm
BOI
- ONT
1 stop21h 40m
Frontier
Sun 7/56:00 am
ONT
- BOI
1 stop5h 29m
Frontier
Deal found 5/24![Frontier logo]()
$326
This Southwest deal was found by Cheapflights users on 5/24. 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.
Tue 6/305:30 am
BOI
- ONT
2 stops7h 00m
Southwest
Sun 7/57:00 pm
ONT
- BOI
1 stop5h 25m
Southwest
Deal found 5/24![Southwest logo]()
$336
One-way flights from Boise to OntarioSearch for one-way flight options from Boise to Ontario. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
Search for one-way flight options from Boise to Ontario. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
This American Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 10/31:42 pm
BOI
- ONT
1 stop5h 06m
American Airlines
Deal found 5/21![American Airlines logo]()
$99
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:25 am
BOI
- ONT
1 stop4h 40m
Delta
Deal found 5/22![Delta logo]()
$109
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 9/223:02 pm
BOI
- ONT
Nonstop2h 08m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$119
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 10/13:02 pm
BOI
- ONT
Nonstop2h 08m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$129
This Frontier deal was found by Cheapflights users on 5/24. 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.
Thu 9/1012:59 pm
BOI
- ONT
1 stop11h 56m
Frontier
Deal found 5/24![Frontier logo]()
$135
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 9/193:02 pm
BOI
- ONT
Nonstop2h 08m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$139
This CheapOair deal was found by Cheapflights users on 5/24. 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.
Tue 7/141:24 pm
BOI
- ONT
1 stop21h 40m
Frontier
Deal found 5/24![Frontier logo]()
$140
This Mytrip deal was found by Cheapflights users on 5/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:24 pm
BOI
- ONT
1 stop21h 40m
Frontier
Deal found 5/24![Frontier logo]()
$144
This CheapOair deal was found by Cheapflights users on 5/24. 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.
Thu 8/61:24 pm
BOI
- ONT
1 stop21h 40m
Frontier
Deal found 5/24![Frontier logo]()
$145
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 9/67:05 pm
BOI
- ONT
1 stop4h 54m
United Airlines
Deal found 5/20![United Airlines logo]()
$149
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/191:11 pm
BOI
- ONT
1 stop4h 30m
Delta
Deal found 5/21![Delta logo]()
$154
This Alaska Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 11/154:48 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$159
Find flight deals from Boise to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Alaska Airlines) |
One-way from | $99 (American Airlines) |
Popular in | October |
Cheapest in | January |
Average price | $327 |
Good round-trip deal | $157 or less |
Good one-way deal | $228 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise 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 2,558,603 searches. Data last updated May 25, 2026.
Use the filters below to find and compare flights from Boise to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Sat 9/26
8:45 am-12:29 pm
1 stop4h 44m
Ontario
Tue 9/29
6:00 am-12:14 pm
1 stop5h 14m
$197
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 9/24
4:17 pm-11:24 pm
1 stop8h 07m
Ontario
Tue 9/29
4:50 pm-7:45 pm
Nonstop1h 55m
$227
Quickest round-trip
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Tue 8/18
2:31 pm-3:38 pm
Nonstop2h 07m
Ontario
Mon 9/7
4:50 pm-7:45 pm
Nonstop1h 55m
$242
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 11/5
1:15 pm-4:12 pm
1 stop3h 57m
Ontario
Sun 11/8
5:05 pm-12:04 am
1 stop5h 59m
$257
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 9/3
7:05 pm-10:59 pm
1 stop4h 54m
Ontario
Tue 9/8
9:01 am-3:31 pm
1 stop5h 30m
$277
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Fri 7/3
6:23 am-11:14 am
1 stop5h 51m
Ontario
Wed 8/19
4:50 pm-7:45 pm
Nonstop1h 55m
$292
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Fri 10/23
2:51 pm-4:02 pm
Nonstop2h 11m
Ontario
Sun 11/1
5:52 pm-11:46 pm
1 stop4h 54m
$292
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Fri 7/3
3:25 pm-8:20 pm
1 stop5h 55m
Ontario
Mon 7/6
6:30 pm-12:20 am
1 stop4h 50m
$307
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Fri 7/3
7:05 pm-10:37 pm
1 stop4h 32m
Ontario
Wed 8/19
9:01 am-3:31 pm
1 stop5h 30m
$322
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 7/16
12:20 pm-6:00 pm
1 stop6h 40m
Ontario
Sun 7/19
7:00 pm-1:25 am
1 stop5h 25m
$367
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Boise to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Ontario in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boise to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Boise with our price prediction graph.
BOI-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 Boise to Ontario
Prices
Airlines
How far ahead should I book a flight from Boise to Ontario?
The best time to book flights from Boise to Ontario is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Boise to Ontario?
Currently, January is the cheapest month in which you can book a flight from Boise to Ontario (average of $232). Flying from Boise to Ontario in October is currently the most expensive (average of $472). 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 BOI to ONT?
Find hourly flight availability from Boise 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 May 25, 2026.
When flying from Boise 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.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated May 25, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Boise to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Related info for your journey
Find useful and relevant information for your journey from Boise 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
Other flights from Boise
Popular flights
Alternative routes for Boise 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 Boise to Ontario by cabin class
Find flights from Boise 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 May 25, 2026.
Boise and Ontario flights
Browse other Boise and Ontario flight options. Last updated on May 25, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on May 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Boise to Ontario
Discover the top 4 airlines that operate flights from Boise 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 2,558,603 searches. Data last updated May 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$277 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$158 | Average$377 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$204 | Average$366 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$234 | Average$347 | FlexibilityNo cancel fee | On-time69% |