$69+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ONT
Mar 28 — Apr 41
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 36 days in advance, depart on a Saturday or Tuesday and return on a Friday
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 February 26, 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 February 26, 2026.
This Delta deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:15 pm
BOI
- ONT
1 stop6h 36m
Delta
Tue 3/315:09 pm
ONT
- BOI
1 stop5h 50m
Delta
Deal found 2/24![Delta logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:57 pm
BOI
- ONT
1 stop19h 48m
Alaska Airlines
Wed 5/137:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 2/24![Alaska Airlines logo]()
$142
This Expedia deal was found by Cheapflights users on 2/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/284:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Thu 4/26:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Deal found 2/26![Alaska Airlines logo]()
$147
This Delta deal was found by Cheapflights users on 2/25. 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.
Wed 4/16:15 pm
BOI
- ONT
1 stop6h 36m
Delta
Mon 4/66:00 am
ONT
- BOI
1 stop16h 46m
Delta
Deal found 2/25![Delta logo]()
$152
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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.
Sat 3/214:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Sat 5/167:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 2/25![Alaska Airlines logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/242:22 pm
BOI
- ONT
1 stop20h 17m
Alaska Airlines
Tue 3/316:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Deal found 2/24![Alaska Airlines logo]()
$162
This Expedia deal was found by Cheapflights users on 2/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:53 am
BOI
- ONT
1 stop20h 38m
Multiple Airlines
Tue 4/216:25 pm
ONT
- BOI
Nonstop2h 01m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$164
This Alaska Airlines deal was found by Cheapflights users on 2/22. 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.
Sat 4/251:15 pm
BOI
- ONT
Nonstop2h 04m
Alaska Airlines
Thu 4/302:59 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Deal found 2/22![Alaska Airlines logo]()
$167
This Delta deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:44 pm
BOI
- ONT
1 stop7h 53m
Delta
Thu 4/232:20 pm
ONT
- BOI
1 stop6h 04m
Delta
Deal found 2/23![Delta logo]()
$168
This Delta deal was found by Cheapflights users on 2/22. 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 4/2512:52 pm
BOI
- ONT
1 stop4h 33m
Delta
Fri 5/12:20 pm
ONT
- BOI
1 stop18h 41m
Delta
Deal found 2/22![Delta logo]()
$170
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 February 26, 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 February 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:15 pm
BOI
- ONT
Nonstop2h 04m
Alaska Airlines
Mon 5/112:59 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Deal found 2/24![Alaska Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 2/25. 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.
Wed 4/16:15 pm
BOI
- ONT
1 stop6h 36m
Delta
Mon 4/65:09 pm
ONT
- BOI
2 stops15h 46m
Delta
Deal found 2/25![Delta logo]()
$205
This United Airlines deal was found by Cheapflights users on 2/22. 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.
Fri 4/107:03 pm
BOI
- ONT
1 stop4h 42m
United Airlines
Sun 4/126:00 am
ONT
- BOI
1 stop4h 23m
United Airlines
Deal found 2/22![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 2/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:30 am
BOI
- ONT
1 stop4h 15m
Southwest
Mon 5/256:00 pm
ONT
- BOI
1 stop6h 00m
Southwest
Deal found 2/26![Southwest logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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.
Thu 3/266:04 pm
BOI
- ONT
1 stop6h 55m
Alaska Airlines
Thu 4/27:08 pm
ONT
- BOI
1 stop27h 48m
Alaska Airlines
Deal found 2/25![Alaska Airlines logo]()
$226
This Delta deal was found by Cheapflights users on 2/22. 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 4/46:15 pm
BOI
- ONT
1 stop5h 33m
Delta
Mon 4/66:00 am
ONT
- BOI
1 stop6h 05m
Delta
Deal found 2/22![Delta logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 2/22. 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.
Mon 4/276:08 pm
BOI
- ONT
1 stop6h 51m
Alaska Airlines
Fri 5/12:59 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Deal found 2/22![Alaska Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 2/22. 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 4/257:24 am
BOI
- ONT
2 stops10h 01m
Delta
Thu 4/3011:53 am
ONT
- BOI
1 stop7h 07m
Delta
Deal found 2/22![Delta logo]()
$251
This Alaska Airlines deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:07 pm
BOI
- ONT
1 stop6h 51m
Alaska Airlines
Mon 5/187:41 pm
ONT
- BOI
1 stop14h 22m
Alaska Airlines
Deal found 2/24![Alaska Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 2/24. 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 3/244:30 pm
BOI
- ONT
2 stops7h 05m
Southwest
Tue 3/314:25 pm
ONT
- BOI
2 stops6h 25m
Southwest
Deal found 2/24![Southwest logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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.
Mon 3/168:27 pm
BOI
- ONT
1 stop15h 41m
Alaska Airlines
Tue 3/174:02 pm
ONT
- BOI
1 stop6h 57m
Alaska Airlines
Deal found 2/23![Alaska Airlines logo]()
$290
This Alaska Airlines deal was found by Cheapflights users on 2/22. 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.
Sun 3/85:50 pm
BOI
- ONT
Nonstop2h 07m
Alaska Airlines
Mon 3/97:37 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 2/22![Alaska Airlines logo]()
$377
Last-minute flights from Boise to OntarioDiscover last-minute flight deals from Boise to Ontario. Data last updated February 26, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Ontario. Data last updated February 26, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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.
Sat 3/214:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Sat 5/167:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 2/25![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:15 pm
BOI
- ONT
1 stop6h 36m
Delta
Tue 3/315:09 pm
ONT
- BOI
1 stop5h 50m
Delta
Deal found 2/24![Delta logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/242:22 pm
BOI
- ONT
1 stop20h 17m
Alaska Airlines
Tue 3/316:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Deal found 2/24![Alaska Airlines logo]()
$162
This United Airlines deal was found by Cheapflights users on 2/24. 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 3/248:39 am
BOI
- ONT
1 stop4h 39m
United Airlines
Tue 3/316:00 am
ONT
- BOI
1 stop4h 06m
United Airlines
Deal found 2/24![United Airlines logo]()
$187
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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.
Thu 3/264:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Thu 4/26:00 am
ONT
- BOI
1 stop16h 56m
Alaska Airlines
Deal found 2/25![Alaska Airlines logo]()
$172
This Expedia deal was found by Cheapflights users on 2/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/284:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Thu 4/26:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Deal found 2/26![Alaska Airlines logo]()
$147
This CheapOair deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/284:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Sat 4/46:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Deal found 2/25![Alaska Airlines logo]()
$167
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 February 26, 2026.
Search for one-way flight options from Boise to Ontario. Find affordable one-way fares based on user searches. Data last updated February 26, 2026.
This Delta deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:59 am
BOI
- ONT
1 stop5h 40m
Delta
Deal found 2/24![Delta logo]()
$69
This Delta deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/284:40 pm
BOI
- ONT
1 stop6h 54m
Delta
Deal found 2/24![Delta logo]()
$76
This CheapOair deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/284:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 2/25![Alaska Airlines logo]()
$79
This Alaska Airlines deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:04 pm
BOI
- ONT
1 stop6h 55m
Alaska Airlines
Deal found 2/23![Alaska Airlines logo]()
$89
This CheapOair deal was found by Cheapflights users on 2/24. 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 4/1611:53 am
BOI
- ONT
1 stop13h 02m
Frontier
Deal found 2/24![Frontier logo]()
$92
This Delta deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:44 pm
BOI
- ONT
1 stop7h 53m
Delta
Deal found 2/24![Delta logo]()
$94
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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 4/251:15 pm
BOI
- ONT
Nonstop2h 04m
Alaska Airlines
Deal found 2/23![Alaska Airlines logo]()
$99
This Delta deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:16 pm
BOI
- ONT
1 stop6h 28m
Delta
Deal found 2/24![Delta logo]()
$104
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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.
Mon 4/204:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 2/23![Alaska Airlines logo]()
$109
This CheapOair deal was found by Cheapflights users on 2/24. 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.
Sun 4/1911:53 am
BOI
- ONT
1 stop20h 38m
Frontier
Deal found 2/24![Frontier logo]()
$113
This Alaska Airlines deal was found by Cheapflights users on 2/23. 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.
Wed 4/86:04 pm
BOI
- ONT
1 stop6h 55m
Alaska Airlines
Deal found 2/23![Alaska Airlines logo]()
$119
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 February 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $117 (Alaska Airlines) |
One-way from | $69 (Delta) |
Popular in | March |
Cheapest in | January |
Average price | $307 |
Good round-trip deal | $147 or less |
Good one-way deal | $123 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 February 26, 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
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 5/7
1:15 pm-2:19 pm
Nonstop2h 04m
Ontario
Mon 5/11
2:59 pm-5:59 pm
Nonstop2h 00m
$177
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Wed 4/1
6:15 pm-11:51 pm
1 stop6h 36m
Ontario
Mon 4/6
5:09 pm-9:55 am
2 stops15h 46m
$205
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 3/26
6:04 pm-11:59 pm
1 stop6h 55m
Ontario
Thu 4/2
7:08 pm-11:56 pm
1 stop27h 48m
$226
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Mon 4/27
6:08 pm-11:59 pm
1 stop6h 51m
Ontario
Fri 5/1
2:59 pm-5:59 pm
Nonstop2h 00m
$227
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Sat 4/4
6:15 pm-10:48 pm
1 stop5h 33m
Ontario
Mon 4/6
6:00 am-1:05 pm
1 stop6h 05m
$228
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Thu 5/14
6:07 pm-11:58 pm
1 stop6h 51m
Ontario
Mon 5/18
7:41 pm-11:03 am
1 stop14h 22m
$235
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Sat 4/25
7:24 am-4:25 pm
2 stops10h 01m
Ontario
Thu 4/30
11:53 am-8:00 pm
1 stop7h 07m
$251
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Fri 4/10
7:03 pm-10:45 pm
1 stop4h 42m
Ontario
Sun 4/12
6:00 am-11:23 am
1 stop4h 23m
$279
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Mon 3/16
8:27 pm-11:08 am
1 stop15h 41m
Ontario
Tue 3/17
4:02 pm-11:59 pm
1 stop6h 57m
$290
BoiseOntario
BOI - ONT
BOIONT
Boise Air Term. Gowen Fld
Fri 5/22
5:30 am-8:45 am
1 stop4h 15m
Ontario
Mon 5/25
6:00 pm-1:00 am
1 stop6h 00m
$337
Showing 1-10 of 23 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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | 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
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How far ahead should I book a flight from Boise to Ontario?
Use this chart to determine the optimal time to book a round-trip flight from Boise to Ontario. Price data was last updated on February 20, 2026.
The best time to book flights from Boise to Ontario is 36 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, March is the cheapest month in which you can book a flight from Boise to Ontario (average of $76). Flying from Boise to Ontario in December is currently the most expensive (average of $183). 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 February 26, 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.
What’s the top layover airport for flights from Boise to Ontario?
Share of 1-stop round-trip flights from Boise to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Portland (PDX) – chosen by Cheapflights users on 50% of 1-stop itineraries from Boise to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Boise to Ontario?
Average round-trip fare for 1-stop flights from Boise to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Portland (PDX) is the most affordable 1-stop option, with an average round-trip price of $252.
What’s the fastest layover option from Boise to Ontario?
Shortest average travel time for 1-stop one-way flights from Boise to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Sacramento (SMF) have the shortest average one-way travel time for 1-stop routes: 3h 45m.
Which airport typically offers the quickest layover for flights from Boise to Ontario?
Average layover duration for 1-stop one-way flights from Boise to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Sacramento (SMF) offer the fastest connection on this route, with an average layover time of 0h 43m.
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 February 26, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Boarding
8.1
Comfort
7.8
Crew
8.5
Overall
8.0
Food
7.1
Entertainment
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Overall
8.0
Food
7.1
Entertainment
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Overall
8.0
Food
7.1
Entertainment
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Overall
8.0
Food
7.1
Entertainment
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Overall
8.0
Food
7.1
Entertainment
7.0
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.
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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 February 26, 2026.
Boise and Ontario flights
Browse other Boise and Ontario flight options. Last updated on February 26, 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 February 26, 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 February 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$252 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$158 | Average$302 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$161 | Average$298 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$224 | Average$365 | FlexibilityNo cancel fee | On-time63% |