HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boise

$93+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Boise 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 Ontario to Boise Air Term. Gowen Fld are usually found in January or September, booked 38 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap 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 September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$153
(Southwest)

One-way from

$93
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$271

Good round-trip deal

$157 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. 3% potential increase in price ($10 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 September 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Boise Air Term. Gowen Fld.
Search Deals

Find 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 September 25, 2025.

This Southwest deal was found by Cheapflights users on 9/25. 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.
Tue 10/286:40 amONT - BOI
1 stop4h 35mSouthwest
Tue 11/46:10 amBOI - ONT
1 stop7h 00mSouthwest
Deal found 9/25$153
This Delta deal was found by Cheapflights users on 9/25. 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.
Sat 10/181:15 pmONT - BOI
1 stop4h 52mDelta
Sat 10/255:25 amBOI - ONT
1 stop6h 43mDelta
Deal found 9/25$154
This Mytrip deal was found by Cheapflights users on 9/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:59 pmONT - BOI
1 stop13h 38mFrontier
Sun 10/512:22 pmBOI - ONT
1 stop20h 31mFrontier
Deal found 9/23$190
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:03 pmONT - BOI
1 stop4h 56mAlaska Airlines
Wed 11/196:28 amBOI - ONT
1 stop5h 37mAlaska Airlines
Deal found 9/24$191
This Booking.com deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/23:43 pmONT - BOI
1 stop18h 54mFrontier
Sun 10/512:22 pmBOI - ONT
1 stop20h 31mFrontier
Deal found 9/24$192
This Delta deal was found by Cheapflights users on 9/23. 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.
Tue 10/145:50 pmONT - BOI
1 stop5h 18mDelta
Tue 10/215:55 pmBOI - ONT
1 stop6h 44mDelta
Deal found 9/23$197
This Delta deal was found by Cheapflights users on 9/23. 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.
Sat 10/181:15 pmONT - BOI
1 stop4h 52mDelta
Mon 10/206:00 amBOI - ONT
1 stop4h 05mDelta
Deal found 9/23$205
This Gotogate deal was found by Cheapflights users on 9/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:53 amONT - BOI
1 stop27h 50mFrontier
Fri 10/1012:28 pmBOI - ONT
1 stop12h 22mFrontier
Deal found 9/23$210
This Cheapflightsfares deal was found by Cheapflights users on 9/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:00 amONT - BOI
1 stop5h 36mAlaska Airlines
Wed 10/295:54 amBOI - ONT
1 stop5h 04mAlaska Airlines
Deal found 9/23$220
This Alaska Airlines deal was found by Cheapflights users on 9/24. 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.
Mon 10/276:11 pmONT - BOI
1 stop27h 09mAlaska Airlines
Sat 11/110:05 amBOI - ONT
1 stop6h 12mAlaska Airlines
Deal found 9/24$221

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 September 25, 2025.
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

Sat 10/18

11:48 am-6:51 pm

1 stop6h 03m

Boise Air Term. Gowen Fld

Sat 10/25

5:25 am-11:08 am

1 stop6h 43m

$154

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 10/21

5:50 pm-12:08 am

1 stop5h 18m

Boise Air Term. Gowen Fld

Tue 10/28

11:12 am-3:53 pm

1 stop5h 41m

$154

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 10/14

5:50 pm-12:08 am

1 stop5h 18m

Boise Air Term. Gowen Fld

Tue 10/21

5:55 pm-11:39 pm

1 stop6h 44m

$197

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 10/25

5:50 pm-12:08 am

1 stop5h 18m

Boise Air Term. Gowen Fld

Tue 10/28

11:12 am-3:53 pm

1 stop5h 41m

$197

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 12/6

1:20 pm-7:35 pm

1 stop5h 15m

Boise Air Term. Gowen Fld

Fri 12/12

5:58 pm-11:59 pm

1 stop7h 01m

$205

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 10/28

6:00 am-12:36 pm

1 stop5h 36m

Boise Air Term. Gowen Fld

Thu 10/30

6:05 pm-11:32 pm

1 stop6h 27m

$226

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 11/6

6:03 pm-11:59 pm

1 stop4h 56m

Boise Air Term. Gowen Fld

Tue 11/11

10:05 am-3:17 pm

1 stop6h 12m

$226

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 11/4

10:59 am-5:11 pm

1 stop5h 12m

Boise Air Term. Gowen Fld

Mon 11/10

6:28 am-11:05 am

1 stop5h 37m

$226

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 11/1

3:45 pm-12:08 am

1 stop7h 23m

Boise Air Term. Gowen Fld

Sun 11/2

11:12 am-3:53 pm

1 stop5h 41m

$227

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 11/11

6:45 am-4:05 pm

1 stop8h 20m

Boise Air Term. Gowen Fld

Thu 11/13

5:20 am-11:08 am

1 stop6h 48m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 20 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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 September 19, 2025.

The best time to book flights from Ontario to Boise is 38 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, October is the cheapest month in which you can book a flight from Ontario to Boise (average of $314). Flying from Ontario to Boise in June is currently the most expensive (average of $398). 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 September 25, 2025.

It’s typically best to fly out from Ontario to Boise in the afternoon. Doing so could potentially save you 48% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Ontario to Boise?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Boise. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Boise flight should consider departing on Thursday afternoons when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 25, 2025.
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
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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?

    Delta can get you from Ontario to Boise in just under 6h 03m. Your travel time can differ by up to . Ontario and Boise are separated by a distance of 661 mi.

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

    Currently priced at $169, Delta will fly you from Ontario to Boise and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and American Airlines - these airlines can fly you to your destination from $178 and $218, respectively. Users have found that Delta is 46% cheaper than the other options available to this destination.

  • What are the cheapest flights from Ontario to Boise?

    Looking for the cheapest flight from Ontario to Boise? While on average our users pay $217, our data indicates the cheapest price to be $157. The most popular route (Ontario - Boise Air Term. Gowen Fld), is priced around $154.

  • 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, October is the cheapest month in which you can book a flight from Ontario to Boise (average of $314). Flying from Ontario to Boise in June is currently the most expensive (average of $398). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Boise

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Boise flights
Los Angeles to Spokane flights
Burbank to Boise flights
Los Angeles to Jackson flights
Santa Ana to Boise flights
Sacramento to Boise flights
San Diego to Boise flights
San Francisco to Spokane flights
San Francisco to Boise flights
San Francisco to Jackson flights
Santa Ana to Spokane flights
Ontario to Spokane flights
Las Vegas to Boise flights
San Francisco to Hailey flights
San Jose to Boise flights
Oakland to Spokane flights
San Diego to Spokane flights
Sacramento to Spokane flights
Los Angeles to Idaho Falls flights
Las Vegas to Spokane flights
San Diego to Jackson flights
Reno to Spokane flights
Ontario to Jackson flights
Burbank to Spokane flights
Oakland to Boise flights
Ontario to Idaho Falls flights
San Jose to Spokane flights
Santa Ana to Jackson flights
Los Angeles to Hailey flights
Long Beach to Spokane flights
Fresno to Boise flights
Palm Springs to Boise flights
Santa Rosa to Boise flights
Sacramento to Jackson flights
Burbank to Idaho Falls flights
Palm Springs to Spokane flights
Reno to Boise flights
Oakland to Jackson flights
Long Beach to Boise flights
Bakersfield to Boise flights
San Francisco to Idaho Falls flights
Santa Ana to Hailey flights
San Jose to Jackson flights
San Diego to Idaho Falls flights
Ontario to Hailey flights
Santa Ana to Idaho Falls flights
San Diego to Hailey flights
San Luis Obispo to Spokane flights
Fresno to Spokane flights

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 September 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$169Average$257FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$178Average$271FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$218Average$516FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$234Average$326FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$234Average$347FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.