$96+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ONT
Jun 2 — Jun 91
Round-trip
1 adult, Economy
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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 Monday 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 3, 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 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/24:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Tue 6/97:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$157
This Frontier deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:25 pm
BOI
- ONT
1 stop11h 25m
Frontier
Tue 7/146:00 am
ONT
- BOI
1 stop5h 29m
Frontier
Deal found 5/1![Frontier logo]()
$190
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/306:41 pm
BOI
- ONT
1 stop5h 04m
Delta
Sat 6/65:55 pm
ONT
- BOI
1 stop4h 09m
Delta
Deal found 4/28![Delta logo]()
$197
This Frontier deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/21:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Tue 6/96:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 4/28![Frontier logo]()
$201
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/44:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Sat 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$207
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:25 pm
BOI
- ONT
1 stop11h 25m
Frontier
Tue 7/216:00 am
ONT
- BOI
1 stop5h 29m
Frontier
Deal found 4/30![Frontier logo]()
$210
This CheapOair deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 7/281:25 pm
BOI
- ONT
1 stop21h 38m
Frontier
Sat 8/1510:49 am
ONT
- BOI
1 stop24h 40m
Frontier
Deal found 4/29![Frontier logo]()
$215
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/296:00 am
BOI
- ONT
1 stop3h 53m
Delta
Sat 6/65:55 pm
ONT
- BOI
1 stop4h 09m
Delta
Deal found 4/28![Delta logo]()
$217
This CheapOair deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:25 pm
BOI
- ONT
1 stop21h 38m
Frontier
Thu 8/66:00 am
ONT
- BOI
1 stop5h 29m
Frontier
Deal found 4/30![Frontier logo]()
$221
This Frontier deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Tue 6/26:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/2![Frontier logo]()
$225
This Alaska Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/304:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Mon 6/17:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 5/2![Alaska Airlines logo]()
$227
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/141:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Sun 6/216:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 4/30![Frontier logo]()
$230
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 3, 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 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/44:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Sat 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$207
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/302:50 pm
BOI
- ONT
1 stop7h 30m
Southwest
Sat 6/65:30 am
ONT
- BOI
2 stops5h 50m
Southwest
Deal found 5/1![Southwest logo]()
$232
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:05 pm
BOI
- ONT
1 stop4h 54m
United Airlines
Wed 10/281:33 pm
ONT
- BOI
1 stop6h 42m
United Airlines
Deal found 4/30![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/216:00 am
BOI
- ONT
1 stop3h 50m
Delta
Tue 6/236:00 am
ONT
- BOI
1 stop5h 21m
Delta
Deal found 4/28![Delta logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:07 pm
BOI
- ONT
1 stop6h 51m
Alaska Airlines
Sat 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 5/2![Alaska Airlines logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:07 pm
BOI
- ONT
1 stop6h 51m
Alaska Airlines
Sat 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$247
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/27:05 pm
BOI
- ONT
1 stop4h 32m
United Airlines
Sat 6/61:50 pm
ONT
- BOI
1 stop6h 50m
United Airlines
Deal found 4/29![United Airlines logo]()
$312
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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
Fri 9/254:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/184:30 pm
BOI
- ONT
Nonstop2h 12m
Alaska Airlines
Sat 10/246:22 pm
ONT
- BOI
Nonstop2h 17m
Alaska Airlines
Deal found 5/2![Alaska Airlines logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 9/173:02 pm
BOI
- ONT
Nonstop2h 08m
Alaska Airlines
Mon 9/214:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/296:07 pm
BOI
- ONT
1 stop6h 51m
Alaska Airlines
Sat 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$277
Last-minute flights from Boise to OntarioDiscover last-minute flight deals from Boise to Ontario. Data last updated May 3, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Ontario. Data last updated May 3, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Mon 5/2510:50 am
ONT
- BOI
1 stop24h 40m
Frontier
Deal found 5/1![Frontier logo]()
$251
This Expedia deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/241:25 pm
BOI
- ONT
1 stop21h 40m
Multiple Airlines
Tue 5/267:48 pm
ONT
- BOI
Nonstop1h 59m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$249
This Frontier deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Tue 6/26:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/2![Frontier logo]()
$225
This CheapOair deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:25 pm
BOI
- ONT
1 stop21h 40m
Frontier
Thu 5/286:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 5/1![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/281:25 pm
BOI
- ONT
1 stop21h 40m
Frontier
Mon 6/110:50 am
ONT
- BOI
1 stop24h 40m
Frontier
Deal found 4/28![Frontier logo]()
$236
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/294:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Sat 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/296:00 am
BOI
- ONT
1 stop3h 53m
Delta
Sat 6/65:55 pm
ONT
- BOI
1 stop4h 09m
Delta
Deal found 4/28![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/304:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Sat 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/306:41 pm
BOI
- ONT
1 stop5h 04m
Delta
Sat 6/65:55 pm
ONT
- BOI
1 stop4h 09m
Delta
Deal found 4/28![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/304:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Mon 6/17:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 5/2![Alaska Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/302:50 pm
BOI
- ONT
1 stop7h 30m
Southwest
Sat 6/65:30 am
ONT
- BOI
2 stops5h 50m
Southwest
Deal found 5/1![Southwest logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/304:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Sun 5/317:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$247
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 3, 2026.
Search for one-way flight options from Boise to Ontario. Find affordable one-way fares based on user searches. Data last updated May 3, 2026.
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 4/30![Frontier logo]()
$96
This Expedia deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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.
Tue 8/181:04 pm
BOI
- ONT
1 stop22h 01m
Frontier
Deal found 4/29![Frontier logo]()
$101
This CheapOair deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 7/281:25 pm
BOI
- ONT
1 stop21h 38m
Frontier
Deal found 4/29![Frontier logo]()
$107
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/24:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$109
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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.
Sun 6/141:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 4/29![Frontier logo]()
$121
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/84:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$129
This Frontier deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 5/2![Frontier logo]()
$141
This Delta deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:10 pm
BOI
- ONT
1 stop5h 31m
Delta
Deal found 5/2![Delta logo]()
$149
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 8/183:30 pm
BOI
- ONT
2 stops6h 25m
Southwest
Deal found 4/29![Southwest logo]()
$154
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$159
This CheapOair deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/192:31 pm
BOI
- ONT
Nonstop2h 07m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$169
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 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (Alaska Airlines) |
One-way from | $96 (Frontier) |
Popular in | October |
Cheapest in | January |
Average price | $304 |
Good round-trip deal | $187 or less |
Good one-way deal | $218 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 3, 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
Quickest round-trip
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 6/4
4:14 pm-5:17 pm
Nonstop2h 03m
Ontario
Sat 6/6
7:48 pm-10:47 pm
Nonstop1h 59m
$207
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Sat 5/30
2:50 pm-9:20 pm
1 stop7h 30m
Ontario
Sat 6/6
5:30 am-12:20 pm
2 stops5h 50m
$232
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Mon 6/1
6:07 pm-11:58 pm
1 stop6h 51m
Ontario
Sat 6/6
7:48 pm-10:47 pm
Nonstop1h 59m
$247
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Tue 6/2
6:07 pm-11:58 pm
1 stop6h 51m
Ontario
Sat 6/6
7:48 pm-10:47 pm
Nonstop1h 59m
$247
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Tue 10/13
7:05 pm-10:59 pm
1 stop4h 54m
Ontario
Wed 10/28
1:33 pm-9:15 pm
1 stop6h 42m
$257
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Sat 9/19
3:02 pm-4:10 pm
Nonstop2h 08m
Ontario
Fri 9/25
4:50 pm-7:45 pm
Nonstop1h 55m
$277
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Sun 10/18
4:30 pm-5:42 pm
Nonstop2h 12m
Ontario
Sat 10/24
6:22 pm-9:39 pm
Nonstop2h 17m
$277
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 9/17
3:02 pm-4:10 pm
Nonstop2h 08m
Ontario
Mon 9/21
4:50 pm-7:45 pm
Nonstop1h 55m
$277
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Fri 5/29
6:07 pm-11:58 pm
1 stop6h 51m
Ontario
Sat 6/6
7:48 pm-10:47 pm
Nonstop1h 59m
$277
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Sun 6/21
6:00 am-8:50 am
1 stop3h 50m
Ontario
Tue 6/23
6:00 am-12:21 pm
1 stop5h 21m
$297
Showing 1-10 of 21 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 3, 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 3, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, 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.
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
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Alternative routes for Boise to Ontario
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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 3, 2026.
Boise and Ontario flights
Browse other Boise and Ontario flight options. Last updated on May 3, 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 3, 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 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$277 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$136 | Average$320 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$200 | Average$365 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$211 | Average$316 | FlexibilityNo cancel fee | On-time69% |