HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boise

$65+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
nov. 26 — dic. 31
mié. 11/26
mié. 12/3
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 September or January, booked 5 days in advance, depart on a Wednesday or Thursday and return on a Monday

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 octubre 27, 2025.

This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1112:04 pmONT - BOI
1 stop22h 45mFrontier
dom. 12/1412:44 pmBOI - ONT
1 stop26h 41mFrontier
Deal found 10/26$155
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.
mié. 12/33:55 pmONT - BOI
1 stop3h 45mSouthwest
mié. 12/105:50 pmBOI - ONT
1 stop3h 55mSouthwest
Deal found 10/26$157
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/412:04 pmONT - BOI
1 stop22h 45mFrontier
dom. 12/712:44 pmBOI - ONT
1 stop26h 41mFrontier
Deal found 10/25$172
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/61:29 pmONT - BOI
1 stop5h 05mDelta
dom. 12/75:58 pmBOI - ONT
1 stop7h 00mDelta
Deal found 10/25$177
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/412:40 pmONT - BOI
1 stop5h 12mDelta
lun. 12/85:58 pmBOI - ONT
1 stop7h 00mDelta
Deal found 10/25$197
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/512:40 pmONT - BOI
1 stop5h 12mDelta
sáb. 12/64:45 pmBOI - ONT
1 stop7h 02mDelta
Deal found 10/25$198
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/58:45 amONT - BOI
1 stop26h 03mFrontier
dom. 11/912:33 pmBOI - ONT
1 stop12h 17mFrontier
Deal found 10/25$215
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/205:16 pmONT - BOI
2 stops17h 27mFrontier
jue. 12/2512:38 pmBOI - ONT
1 stop12h 21mFrontier
Deal found 10/26$224
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/146:03 pmONT - BOI
1 stop4h 56mAlaska Airlines
dom. 11/165:54 amBOI - ONT
1 stop5h 04mAlaska Airlines
Deal found 10/25$234

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 octubre 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$155
(Booking.com)

One-way from

$65
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$292

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. 7% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip 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 octubre 27, 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

sáb. 12/6

6:40 am-1:14 pm

1 stop5h 34m

Boise Air Term. Gowen Fld

sáb. 12/6

5:58 pm-9:55 pm

1 stop4h 57m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 12/3

3:55 pm-8:40 pm

1 stop3h 45m

Boise Air Term. Gowen Fld

mié. 12/10

5:50 pm-8:45 pm

1 stop3h 55m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 2/21

6:22 pm-9:39 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

lun. 2/23

4:30 pm-5:42 pm

Nonstop2h 12m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

vie. 2/27

6:22 pm-9:39 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

sáb. 2/28

4:30 pm-5:42 pm

Nonstop2h 12m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 2/21

6:22 pm-9:39 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

dom. 2/22

4:30 pm-5:42 pm

Nonstop2h 12m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

jue. 2/19

6:22 pm-9:39 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

sáb. 2/21

4:30 pm-5:42 pm

Nonstop2h 12m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

jue. 12/4

12:04 pm-11:49 am

1 stop22h 45m

Boise Air Term. Gowen Fld

dom. 12/7

12:44 pm-2:25 pm

1 stop26h 41m

$172

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 12/6

6:40 am-1:14 pm

1 stop5h 34m

Boise Air Term. Gowen Fld

lun. 12/8

5:58 pm-11:58 pm

1 stop7h 00m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 12/6

1:29 pm-7:34 pm

1 stop5h 05m

Boise Air Term. Gowen Fld

dom. 12/7

5:58 pm-11:58 pm

1 stop7h 00m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

jue. 1/8

7:56 pm-10:57 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

dom. 1/11

6:09 pm-7:16 pm

Nonstop2h 07m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 22 results
1
2
3

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 October.
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 October 24, 2025.

The best time to book flights from Ontario to Boise is 5 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 December is currently the most expensive (average of $158). 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 octubre 27, 2025.

It’s typically best to fly out from Ontario to Boise in the afternoon. Doing so could potentially save you 46% 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 Tuesday evenings 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 octubre 27, 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
11,197 reviews

Comfort

7.8

Overall

8.0

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
11,197 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Comfort

7.8

Overall

8.0

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
4,236 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Comfort

7.8

Overall

8.0

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
7.9
Good
7,996 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Comfort

7.8

Overall

8.0

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
8,997 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Comfort

7.8

Overall

8.0

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
11,033 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Comfort

7.8

Overall

8.0

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, Southwest, and Alaska Airlines can get you from Ontario to Boise in just under 2h 17m. Your travel time can differ by up to 3h 17m. Ontario and Boise are separated by a distance of 661 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $158, 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 50% 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 $153.

  • 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 December is currently the most expensive (average of $158). 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
Santa Ana to Boise flights
San Francisco to Boise flights
San Francisco to Jackson flights
San Francisco to Spokane flights
Sacramento to Boise flights
Los Angeles to Jackson flights
San Diego to Boise flights
Ontario to Spokane flights
San Francisco to Hailey flights
San Jose to Boise flights
Burbank to Boise flights
Los Angeles to Hailey flights
Las Vegas to Boise flights
Santa Ana to Spokane flights
Oakland to Spokane flights
San Diego to Spokane flights
Sacramento to Spokane flights
Fresno to Boise flights
San Jose to Spokane flights
Burbank to Spokane flights
San Diego to Jackson flights
Oakland to Boise flights
Las Vegas to Spokane flights
Palm Springs to Boise flights
Los Angeles to Idaho Falls flights
Ontario to Jackson flights
Ontario to Idaho Falls flights
Santa Ana to Idaho Falls flights
Burbank to Jackson flights
Fresno to Spokane flights
Santa Ana to Jackson flights
Reno to Spokane flights
Long Beach to Boise flights
Medford to Boise flights
Reno to Boise flights
San Diego to Hailey flights
Sacramento to Idaho Falls flights
Burbank to Idaho Falls flights
Medford to Spokane flights
Santa Rosa to Boise flights
Palm Springs to Spokane flights
Santa Barbara to Spokane flights
San Luis Obispo to Spokane flights
Long Beach to Spokane flights
Santa Barbara to Boise flights
San Jose to Jackson flights
Sacramento to Jackson 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 octubre 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$158Average$255FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$178Average$262FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$218Average$516FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$234Average$326FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$234Average$351FlexibilityNo 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.