$80+ Cheap flights from Boise to Ontario (BOI - ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ONT
Nov 29 — Dec 61
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 April, booked 60 days in advance, depart on a Monday 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 October 30, 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 October 30, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:55 pm -
1 stop13h 35m
Tue 11/242:01 pm -
1 stop3h 59m
Deal found 10/26![Frontier logo]()
$169
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:11 pm -
1 stop6h 18m
Tue 12/811:57 am -
1 stop5h 41m
Deal found 10/29![Delta logo]()
$177
This CheapOair deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:56 pm -
1 stop23h 35m
Wed 12/92:53 pm -
1 stop25h 27m
Deal found 10/27![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 10/28. 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.
Mon 12/215:33 pm -
1 stop4h 09m
Fri 12/2510:23 am -
1 stop5h 25m
Deal found 10/28![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:55 pm -
1 stop12h 25m
Wed 12/22:00 pm -
1 stop28h 01m
Deal found 10/28![Frontier logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:49 pm -
1 stop21h 27m
Wed 11/185:07 pm -
1 stop19h 47m
Deal found 10/26![Frontier logo]()
$192
This Southwest deal was found by Cheapflights users on 10/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:30 am -
1 stop4h 50m
Sat 12/126:50 am -
1 stop6h 20m
Deal found 10/28![Southwest logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 12/53:40 pm -
Nonstop2h 16m
Tue 12/85:36 pm -
Nonstop2h 05m
Deal found 10/29![Alaska Airlines logo]()
$207
This WAYA deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:55 pm -
1 stop12h 25m
Tue 12/18:00 am -
1 stop6h 24m
Deal found 10/27![Multiple Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 10/26. 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.
Mon 11/1612:40 pm -
1 stop6h 10m
Wed 11/183:20 pm -
2 stops6h 30m
Deal found 10/26![Southwest logo]()
$212
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 October 30, 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 October 30, 2026.
This Southwest deal was found by Cheapflights users on 10/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:30 am -
1 stop4h 50m
Sat 12/126:50 am -
1 stop6h 20m
Deal found 10/28![Southwest logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 1/281:15 pm -
1 stop7h 47m
Wed 2/33:05 pm -
Nonstop1h 59m
Deal found 10/25![Alaska Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:11 pm -
1 stop6h 18m
Sun 12/65:04 pm -
1 stop4h 01m
Deal found 10/27![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 4/216:30 am -
1 stop4h 27m
Sat 4/241:00 pm -
1 stop7h 16m
Deal found 10/25![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 10/29. 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.
Mon 11/238:30 pm -
2 stops12h 35m
Thu 11/2612:05 pm -
1 stop4h 20m
Deal found 10/29![Southwest logo]()
$233
This Southwest deal was found by Cheapflights users on 10/26. 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 12/116:00 am -
1 stop5h 45m
Sun 12/135:55 am -
1 stop4h 45m
Deal found 10/26![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 10/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:20 am -
1 stop4h 10m
Mon 12/285:05 pm -
1 stop3h 35m
Deal found 10/28![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 10/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop5h 40m
Sun 11/155:55 am -
1 stop4h 45m
Deal found 10/28![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/82:35 pm -
2 stops6h 50m
Mon 1/112:55 pm -
2 stops6h 15m
Deal found 10/25![Southwest logo]()
$313
This Southwest deal was found by Cheapflights users on 10/29. 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.
Sat 11/147:40 am -
1 stop5h 05m
Mon 11/305:05 pm -
1 stop3h 35m
Deal found 10/29![Southwest logo]()
$356
Last-minute flights from Boise to OntarioDiscover last-minute flight deals from Boise to Ontario. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Ontario. Data last updated October 30, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:49 pm -
1 stop21h 27m
Wed 11/185:07 pm -
1 stop19h 47m
Deal found 10/26![Frontier logo]()
$192
This Southwest deal was found by Cheapflights users on 10/26. 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.
Mon 11/1612:40 pm -
1 stop6h 10m
Wed 11/187:05 am -
1 stop5h 00m
Deal found 10/26![Southwest logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:49 pm -
1 stop6h 34m
Mon 11/232:01 pm -
1 stop27h 59m
Deal found 10/27![Frontier logo]()
$217
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:55 pm -
1 stop13h 35m
Tue 11/242:01 pm -
1 stop3h 59m
Deal found 10/26![Frontier logo]()
$169
This Trip.com deal was found by Cheapflights users on 10/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:55 pm -
1 stop19h 56m
Wed 11/258:15 am -
1 stop9h 45m
Deal found 10/29![Frontier logo]()
$224
This Southwest deal was found by Cheapflights users on 10/29. 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.
Mon 11/238:30 pm -
2 stops12h 35m
Thu 11/2612:05 pm -
1 stop4h 20m
Deal found 10/29![Southwest logo]()
$233
This WAYA deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:55 pm -
1 stop12h 25m
Tue 12/18:00 am -
1 stop6h 24m
Deal found 10/27![Multiple Airlines logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:55 pm -
1 stop12h 25m
Wed 12/22:00 pm -
1 stop28h 01m
Deal found 10/28![Frontier logo]()
$191
This Southwest deal was found by Cheapflights users on 10/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:00 am -
1 stop5h 45m
Fri 12/41:55 pm -
1 stop7h 40m
Deal found 10/28![Southwest logo]()
$237
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 October 30, 2026.
Search for one-way flight options from Boise to Ontario. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Super.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:33 pm -
1 stop5h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 10/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/267:53 pm -
1 stop12h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/215:33 pm -
1 stop4h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$93
This Southwest deal was found by Cheapflights users on 10/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:20 am -
1 stop6h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Southwest logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:55 pm -
1 stop17h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$100
This CheapOair deal was found by Cheapflights users on 10/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/17:53 pm -
1 stop12h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$105
This Southwest deal was found by Cheapflights users on 10/26. 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.
Tue 1/512:40 pm -
1 stop6h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Southwest logo]()
$114
This Trip.com deal was found by Cheapflights users on 10/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:37 am -
1 stop5h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Alaska Airlines logo]()
$119
This CheapOair deal was found by Cheapflights users on 10/28. 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 11/192:49 pm -
1 stop17h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$120
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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (Cheapflightsfares) |
One-way from | $80 (Super.com) |
Popular in | March |
Cheapest in | January |
Average price | $297 |
Good round-trip deal | $277 or less |
Good one-way deal | $194 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from 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 7,457,451 searches. Data last updated October 30, 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 Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 11/18
7:20 am-12:50 pm
1 stop6h 30m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 11/25
7:10 pm-10:48 pm
1 stop4h 38m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$104
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 12/16
5:47 am-10:01 am
1 stop5h 14m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$124
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Thu 11/5
2:49 pm-4:21 pm
1 stop26h 32m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$136
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Fri 11/13
7:10 pm-10:48 pm
1 stop4h 38m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 11/4
7:20 am-12:50 pm
1 stop6h 30m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$147
Quickest round-trip
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 12/9
6:10 am-9:38 am
1 stop4h 28m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Sat 12/19
6:35 pm-11:59 pm
1 stop6h 24m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$160
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Mon 11/9
6:45 pm-11:49 pm
1 stop6h 04m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$190
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Sat 12/5
11:30 am-3:20 pm
1 stop4h 50m
Ontario
Sat 12/12
6:50 am-2:10 pm
1 stop6h 20m
$197
Showing 1-10 of 19 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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
How far ahead should I book a flight from Boise to Ontario?
The best time to book flights from Boise to Ontario is 35 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 $271). Flying from Boise to Ontario in March is currently the most expensive (average of $447). 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 October 30, 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 October 30, 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.
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
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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Top 5 airlines flying from Boise to Ontario
Discover the top 5 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 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$242 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$137 | Average$282 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$216 | Average$358 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$236 | Average$478 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$267 | Average$306 | FlexibilityNo cancel fee | On-time69% |