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$76+ Cheap flights from Ontario to Boise (ONT - BOI)

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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Find cheap flights from Ontario to Boise with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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Cheapflights Tip: The best prices from Ontario to Boise Air Term. Gowen Fld are usually found in January or September, booked 87 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Ontario to Boise

Cheapest flights from Ontario to Boise
Explore the most affordable flight options available from Ontario to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:59 pm
ONT
-
BOI
Nonstop1h 59m
Alaska Airlines
Sat 2/285:50 pm
BOI
-
ONT
Nonstop2h 07m
Alaska Airlines
Deal found 1/26$117
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:37 pm
ONT
-
BOI
Nonstop1h 59m
Alaska Airlines
Tue 3/36:07 pm
BOI
-
ONT
Nonstop2h 07m
Alaska Airlines
Deal found 1/26$137
This Expedia deal was found by Cheapflights users on 1/26. 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.
Wed 2/187:59 pm
ONT
-
BOI
Nonstop1h 59m
Alaska Airlines
Mon 2/235:50 pm
BOI
-
ONT
Nonstop2h 07m
Alaska Airlines
Deal found 1/26$147
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:37 pm
ONT
-
BOI
Nonstop1h 59m
Alaska Airlines
Sat 2/215:50 pm
BOI
-
ONT
Nonstop2h 07m
Alaska Airlines
Deal found 1/27$157
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:05 pm
ONT
-
BOI
1 stop5h 52m
Delta
Sat 5/1611:35 am
BOI
-
ONT
1 stop5h 39m
Delta
Deal found 1/26$162
This Expedia deal was found by Cheapflights users on 1/26. 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.
Wed 2/187:30 am
ONT
-
BOI
1 stop27h 21m
Multiple Airlines
Mon 2/238:20 pm
BOI
-
ONT
1 stop4h 32m
Multiple Airlines
Deal found 1/26$168
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:14 am
ONT
-
BOI
1 stop7h 44m
Alaska Airlines
Wed 2/256:00 pm
BOI
-
ONT
1 stop5h 44m
Alaska Airlines
Deal found 1/27$171
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:37 pm
ONT
-
BOI
Nonstop1h 59m
Alaska Airlines
Mon 3/25:50 pm
BOI
-
ONT
Nonstop2h 07m
Alaska Airlines
Deal found 1/27$177
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/283:30 pm
ONT
-
BOI
1 stop5h 26m
Delta
Tue 3/38:50 am
BOI
-
ONT
1 stop6h 04m
Delta
Deal found 1/26$183
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:30 am
ONT
-
BOI
1 stop7h 45m
Delta
Sat 2/285:15 pm
BOI
-
ONT
1 stop6h 22m
Delta
Deal found 1/26$185

Find flight deals from Ontario to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Boise (BOI). 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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$117
(Alaska Airlines)

One-way from

$76
(CheapOair)

Popular in

November

Cheapest in

January

Average price

$181

Good round-trip deal

$157 or less

Good one-way deal

$108 or less
Provider with most accurate pricing for Ontario-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Boise Air Term. Gowen Fld flights.
Search Deals
From Ontario to Boise Air Term. Gowen Fld
Search Deals
One-way flight from Ontario to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Boise Air Term. Gowen Fld.
Search Deals
Price to beat on a one-way flight from Ontario to Boise Air Term. Gowen Fld.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Boise 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 January 28, 2026.
Use the filters below to find and compare flights from Ontario to Boise that are best for you.

Fly from

Ontario

Fly to

Boise

Route

Depart

Return

Price

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 2/24

7:59 pm-10:58 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Sat 2/28

5:50 pm-6:57 pm

Nonstop2h 07m

$117

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 2/28

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Tue 3/3

6:07 pm-7:14 pm

Nonstop2h 07m

$137

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 4/21

6:00 am-12:22 pm

1 stop5h 22m

Boise Air Term. Gowen Fld

Sat 4/25

1:15 pm-2:19 pm

Nonstop2h 04m

$167

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 4/15

6:00 am-12:22 pm

1 stop5h 22m

Boise Air Term. Gowen Fld

Wed 4/22

1:15 pm-2:19 pm

Nonstop2h 04m

$167

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 2/25

6:14 am-2:58 pm

1 stop7h 44m

Boise Air Term. Gowen Fld

Wed 2/25

6:00 pm-10:44 pm

1 stop5h 44m

$171

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 4/16

6:25 pm-9:26 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Mon 4/20

4:40 pm-5:45 pm

Nonstop2h 05m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 2/25

6:14 am-2:58 pm

1 stop7h 44m

Boise Air Term. Gowen Fld

Sat 2/28

5:50 pm-6:57 pm

Nonstop2h 07m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 2/19

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Mon 2/23

5:50 pm-6:57 pm

Nonstop2h 07m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 2/28

3:30 pm-9:56 pm

1 stop5h 26m

Boise Air Term. Gowen Fld

Tue 3/3

8:50 am-1:54 pm

1 stop6h 04m

$183

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 5/2

2:59 pm-5:59 pm

Nonstop2h 00m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 19 results
1
2

Compare providers for flights from Ontario to Boise

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 Ontario to Boise in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Boise 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 Ontario-Boise 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 Ontario to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Ontario with our price prediction graph.
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 Ontario to Boise

How far ahead should I book a flight from Ontario to Boise?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Boise. Price data was last updated on January 23, 2026.

The best time to book flights from Ontario to Boise is 87 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 Ontario to Boise?

Currently, May is the cheapest month in which you can book a flight from Ontario to Boise (average of $65). Flying from Ontario to Boise in November is currently the most expensive (average of $182). 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 ONT to BOI?

Find hourly flight availability from Ontario to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 28, 2026.

When flying from Ontario to Boise, 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 Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated January 28, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Ontario to Boise by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,799 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,268 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,120 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,206 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,198 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Related info for your journey

Find useful and relevant information for your journey from Ontario to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Boise?

    Alaska Airlines can get you from Ontario to Boise in just under 1h 59m. Your travel time will be generally consistent. Ontario and Boise are separated by a distance of 661 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Ontario to Boise round-trip?

    Currently priced at $137, Alaska Airlines will fly you from Ontario to Boise and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $158 and $196, respectively. Users have found that Alaska Airlines is 56% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Ontario to Boise one-way?

    $69 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $88 and $98, respectively.

  • What are the most reliable airlines from Ontario to Boise?

    Consider Sun Country Air (100%), Alaska Airlines (63%) or Horizon Air (63%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Boise.

  • What are the cheapest flights from Ontario to Boise?

    Looking for the cheapest flight from Ontario to Boise? While on average our users pay $163, our data indicates the cheapest price to be $97. The most popular route (Ontario - Boise Air Term. Gowen Fld), is priced around $117.

  • Can I find deals for flights from Ontario to Boise that include hotel bookings?

    Yes. In addition to deals on Ontario to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Boise?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Boise.

  • Can I find deals for business class flights from Ontario to Boise?

    Yes. Cheapflights offers flight deals from Ontario to Boise by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Boise?

    Currently, May is the cheapest month in which you can book a flight from Ontario to Boise (average of $65). Flying from Ontario to Boise in November is currently the most expensive (average of $182). 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.

See more FAQs

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top 5 airlines flying from Ontario to Boise

Discover the top 5 airlines that operate flights from Ontario to Boise. 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 January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$137Average$244FlexibilityNo cancel feeOn-time75%
DeltaCheapest$158Average$259FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$196Average$315FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$220Average$345FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$227Average$516FlexibilityNo cancel feeOn-time71%

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