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$96+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Boise Air Term. Gowen Fld are usually found in January or October, booked 15 days in advance, depart on a Thursday or Saturday 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 April 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$226
(CheapOair)

One-way from

$96
(CheapOair)

Popular in

December

Cheapest in

January

Average price

$289
Provider with most accurate pricing for Ontario-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Ontario-Boise Air Term. Gowen Fld flights.
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From Ontario to Boise Air Term. Gowen Fld
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One-way flight from Ontario to Boise Air Term. Gowen Fld
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 15, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 4/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/134:29 pmONT - BOI
1 stop5h 10mHawaiian Airlines
Tue 5/205:39 pmBOI - ONT
1 stop6h 07mHawaiian Airlines
Deal found 4/14$232
This Delta deal was found by Cheapflights users on 4/14. 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.
Wed 6/42:55 pmONT - BOI
1 stop6h 34mDelta
Tue 6/106:10 pmBOI - ONT
1 stop6h 36mDelta
Deal found 4/14$233
This CheapOair deal was found by Cheapflights users on 4/13. 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.
Wed 5/2112:08 amONT - BOI
1 stop10h 43mFrontier
Thu 5/2912:36 pmBOI - ONT
1 stop12h 15mFrontier
Deal found 4/13$246
This Southwest deal was found by Cheapflights users on 4/14. 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 5/136:20 amONT - BOI
1 stop4h 25mSouthwest
Sat 5/175:55 amBOI - ONT
2 stops7h 05mSouthwest
Deal found 4/14$248
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 5/124:29 pmONT - BOI
1 stop5h 10mAlaska Airlines
Mon 5/198:59 pmBOI - ONT
1 stop14h 58mAlaska Airlines
Deal found 4/14$252
This Expedia deal was found by Cheapflights users on 4/14. 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.
Mon 5/2612:59 amONT - BOI
1 stop9h 52mMultiple Airlines
Fri 5/305:39 pmBOI - ONT
1 stop6h 07mMultiple Airlines
Deal found 4/14$278
This United Airlines deal was found by Cheapflights users on 4/14. 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.
Fri 6/206:00 amONT - BOI
1 stop9h 41mUnited Airlines
Mon 6/237:07 pmBOI - ONT
1 stop4h 38mUnited Airlines
Deal found 4/14$432

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 April 15, 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

Tue 5/13

4:29 pm-10:39 pm

1 stop5h 10m

Boise Air Term. Gowen Fld

Tue 5/20

5:39 pm-10:46 pm

1 stop6h 07m

$232

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 6/4

2:55 pm-10:29 pm

1 stop6h 34m

Boise Air Term. Gowen Fld

Tue 6/10

6:10 pm-11:46 pm

1 stop6h 36m

$233

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 5/21

12:08 am-11:51 am

1 stop10h 43m

Boise Air Term. Gowen Fld

Thu 5/29

12:36 pm-11:51 pm

1 stop12h 15m

$246

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 5/13

6:20 am-11:45 am

1 stop4h 25m

Boise Air Term. Gowen Fld

Sat 5/17

5:55 am-12:00 pm

2 stops7h 05m

$248

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Mon 5/12

4:29 pm-10:39 pm

1 stop5h 10m

Boise Air Term. Gowen Fld

Mon 5/19

8:59 pm-10:57 am

1 stop14h 58m

$252

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Mon 5/26

12:59 am-11:51 am

1 stop9h 52m

Boise Air Term. Gowen Fld

Fri 5/30

5:39 pm-10:46 pm

1 stop6h 07m

$278

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 6/13

6:32 pm-9:46 am

1 stop14h 14m

Boise Air Term. Gowen Fld

Sun 6/15

2:35 pm-9:04 pm

1 stop7h 29m

$515

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 5/14

11:58 pm-1:37 pm

1 stop12h 39m

$96

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 5/7

4:29 pm-10:39 pm

1 stop5h 10m

$116

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 6/11

2:35 pm-11:50 pm

1 stop8h 15m

$117

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 14 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 eDreams the most. eDreams 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 April 11, 2025.

The best time to book flights from Ontario to Boise is 15 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 $419). 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 April 15, 2025.

It’s typically best to fly out from Ontario to Boise in the evening. Doing so could potentially save you 19% 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 Monday 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.

Rainfall in Boise by month

Plan your trip to Boise by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boise ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Boise when rainfall is around 0.2 in.

Temperature in Boise by month

Plan your trip to Boise by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boise, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 April 15, 2025.
Read through reviews of airlines operating flights from Ontario to Boise, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,279 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,374 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,656 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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

    Currently priced at $226, Frontier will fly you from Ontario to Boise and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Hawaiian Airlines and Delta - these airlines can fly you to your destination from $232 and $233, respectively. Users have found that Frontier is 30% cheaper than the other options available to this destination.

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

    $96 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Hawaiian Airlines and Delta, with prices starting from $116 and $117, respectively.

  • 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 $419). 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 Ontario?

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

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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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$121Average$163FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$177Average$298FlexibilityNo cancel feeOn-time75%
DeltaCheapest$209Average$321FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$238Average$377FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$239Average$344FlexibilityNo cancel feeOn-time63%

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