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Boise

$94+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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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”

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Cheapflights Tip: The best prices from Ontario to Boise Air Term. Gowen Fld are usually found in January or May, booked 43 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 July 30, 2026.

This Traveloka deal was found by Cheapflights users on 7/27. 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 Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:50 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Wed 9/163:02 pm
BOI
-
ONT
Nonstop2h 08m
Alaska Airlines
Deal found 7/27$175
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:50 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Tue 9/13:02 pm
BOI
-
ONT
Nonstop2h 08m
Alaska Airlines
Deal found 7/28$177
This SmartFares deal was found by Cheapflights users on 7/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:50 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Sun 8/306:00 am
BOI
-
ONT
1 stop4h 51m
Alaska Airlines
Deal found 7/26$182
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/197:56 pm
ONT
-
BOI
1 stop14h 33m
Frontier
Tue 8/251:24 pm
BOI
-
ONT
1 stop11h 26m
Frontier
Deal found 7/28$186
This Southwest deal was found by Cheapflights users on 7/29. 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.
Tue 9/83:35 pm
ONT
-
BOI
1 stop6h 50m
Southwest
Tue 9/154:45 pm
BOI
-
ONT
1 stop4h 25m
Southwest
Deal found 7/29$187
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 10/172:13 pm
ONT
-
BOI
1 stop4h 53m
Alaska Airlines
Tue 10/202:51 pm
BOI
-
ONT
Nonstop2h 11m
Alaska Airlines
Deal found 7/29$197
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Fri 9/254:50 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Sun 9/276:00 am
BOI
-
ONT
1 stop4h 51m
Alaska Airlines
Deal found 7/29$207

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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$175
(Traveloka)

One-way from

$94
(Southwest)

Popular in

November

Cheapest in

January

Average price

$381

Good round-trip deal

$197 or less

Good one-way deal

$277 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. 16% potential increase in price ($61 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 July 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 July 30, 2026.
Use the filters below to find and compare flights from Ontario to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 8/29

4:50 pm-7:45 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

Tue 9/1

3:02 pm-4:10 pm

Nonstop2h 08m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 10/28

4:42 pm-7:43 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Sat 10/31

2:51 pm-4:02 pm

Nonstop2h 11m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 9/16

12:12 pm-8:35 pm

1 stop7h 23m

Boise Air Term. Gowen Fld

Sat 9/19

3:02 pm-4:10 pm

Nonstop2h 08m

$197

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 9/9

3:35 pm-11:25 pm

1 stop6h 50m

Boise Air Term. Gowen Fld

Wed 9/16

3:30 pm-9:00 pm

2 stops6h 30m

$202

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 9/10

9:55 am-3:05 pm

1 stop4h 10m

Boise Air Term. Gowen Fld

Sat 9/12

12:55 pm-8:05 pm

2 stops8h 10m

$202

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 10/22

6:02 am-1:50 pm

1 stop6h 48m

Boise Air Term. Gowen Fld

Tue 10/27

4:20 pm-8:15 pm

1 stop4h 55m

$217

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 9/25

4:50 pm-7:45 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

Sun 9/27

3:02 pm-4:10 pm

Nonstop2h 08m

$222

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 9/17

4:10 pm-11:40 pm

2 stops6h 30m

Boise Air Term. Gowen Fld

Sun 9/20

6:00 am-9:25 am

1 stop4h 25m

$252

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 10/1

6:55 pm-1:40 am

1 stop5h 45m

Boise Air Term. Gowen Fld

Sat 10/3

5:55 am-11:10 am

2 stops6h 15m

$257
Cheapest one-way

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 9/1

3:07 pm-11:44 pm

1 stop7h 37m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 20 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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?

The best time to book flights from Ontario to Boise is 42 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, January is the cheapest month in which you can book a flight from Ontario to Boise (average of $177). Flying from Ontario to Boise in November is currently the most expensive (average of $413). 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 July 30, 2026.

It’s typically best to fly out from Ontario to Boise at noon. Doing so could potentially save you 62% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Ontario to Boise?

Airfare is below average for this route at the moment.

Ontario to Boise flights typically cost between $217 and $320 in September.
The cheapest round-trip price found within the last 5 days was $175 on Alaska Airlines (Sep 9-Sep 16).

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 July 30, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta 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.
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
8.0
Very good
4,227 reviews
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Alaska Airlines
7.9
Good
12,733 reviews
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Delta
7.8
Good
8,494 reviews
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

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.

  • What airports do I use to fly from Ontario to Boise?

    Booking a flight from Ontario (ONT) to Boise Air Term. Gowen Fld (BOI) is your only option if you wish to fly from Ontario to Boise. On a typical day, there is 1 flight from Ontario to Air Term. Gowen Fld, all of which are around 1h 55m for a nonstop flight. You can also purchase a plane ticket from 3 airlines when you book a flight from Ontario to Boise.

  • How popular is this Ontario to Boise flight route?

    This flight path from Ontario to Boise Air Term. Gowen Fld was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Ontario to Boise?

    Alaska Airlines and Southwest can get you from Ontario to Boise in just under 1h 55m. Your travel time can differ by up to 4h 55m. 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 $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 Southwest and Delta - these airlines can fly you to your destination from $176 and $183, 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?

    $70 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $108 and $108, respectively.

  • What are the cheapest flights from Ontario to Boise?

    Looking for the cheapest flight from Ontario to Boise? While on average our users pay $285, our data indicates the cheapest price to be $173. The most popular route (Ontario - Boise Air Term. Gowen Fld), is priced around $187.

  • 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, January is the cheapest month in which you can book a flight from Ontario to Boise (average of $177). Flying from Ontario to Boise in November is currently the most expensive (average of $413). 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

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Top 3 airlines flying from Ontario to Boise

Discover the top 3 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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$137Average$285FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$176Average$357FlexibilityNo cancel feeOn-time63%
DeltaCheapest$183Average$258FlexibilityNo cancel feeOn-timeN/A

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