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$70+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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1. Tell us where you want to go

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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 Wednesday or Thursday 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 December 14, 2025.

This Delta deal was found by Cheapflights users on 12/14. 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.
Sun 12/285:10 pmONT - BOI
1 stop6h 09mDelta
Mon 1/55:15 pmBOI - ONT
1 stop6h 36mDelta
Deal found 12/14$272
This Delta deal was found by Cheapflights users on 12/14. 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 12/316:00 amONT - BOI
1 stop5h 02mDelta
Mon 1/55:15 pmBOI - ONT
1 stop6h 36mDelta
Deal found 12/14$343
This Alaska Airlines deal was found by Cheapflights users on 12/11. 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 12/254:36 pmONT - BOI
1 stop6h 01mAlaska Airlines
Thu 1/18:21 pmBOI - ONT
1 stop4h 38mAlaska Airlines
Deal found 12/11$386
This Southwest deal was found by Cheapflights users on 12/12. 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.
Sun 12/285:20 amONT - BOI
1 stop4h 15mSouthwest
Sat 1/35:35 amBOI - ONT
1 stop9h 25mSouthwest
Deal found 12/12$387
This Delta deal was found by Cheapflights users on 12/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:10 pmONT - BOI
1 stop6h 09mDelta
Fri 1/28:40 amBOI - ONT
1 stop4h 49mDelta
Deal found 12/13$417
This Delta deal was found by Cheapflights users on 12/14. 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.
Sun 12/285:10 pmONT - BOI
1 stop6h 09mDelta
Sun 1/45:40 amBOI - ONT
1 stop6h 22mDelta
Deal found 12/14$427
This United Airlines deal was found by Cheapflights users on 12/12. 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.
Wed 12/175:05 amONT - BOI
1 stop7h 34mUnited Airlines
Mon 1/56:35 amBOI - ONT
1 stop4h 26mUnited Airlines
Deal found 12/12$430
This Alaska Airlines deal was found by Cheapflights users on 12/14. 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.
Wed 12/317:00 amONT - BOI
1 stop4h 42mAlaska Airlines
Thu 1/18:21 pmBOI - ONT
1 stop4h 38mAlaska Airlines
Deal found 12/14$446
This Southwest deal was found by Cheapflights users on 12/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:20 amONT - BOI
1 stop6h 00mSouthwest
Tue 12/308:45 pmBOI - ONT
1 stop4h 10mSouthwest
Deal found 12/13$447
This Southwest deal was found by Cheapflights users on 12/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/214:20 pmONT - BOI
1 stop6h 10mSouthwest
Mon 12/298:45 pmBOI - ONT
1 stop4h 10mSouthwest
Deal found 12/13$455

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 December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$137
(Alaska Airlines)

One-way from

$70
(Super.com)

Popular in

December

Cheapest in

January

Average price

$507

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. 13% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 14, 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

Wed 1/7

3:30 pm-9:58 pm

1 stop5h 28m

Boise Air Term. Gowen Fld

Wed 1/14

9:15 am-1:56 pm

1 stop5h 41m

$147

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 3/12

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Tue 3/17

6:07 pm-7:14 pm

Nonstop2h 07m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 1/15

6:00 am-11:59 pm

1 stop16h 59m

Boise Air Term. Gowen Fld

Tue 1/20

6:09 pm-7:16 pm

Nonstop2h 07m

$172

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 1/6

6:05 pm-11:57 pm

1 stop4h 52m

Boise Air Term. Gowen Fld

Sat 1/10

6:09 pm-7:16 pm

Nonstop2h 07m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 2/6

1:46 pm-8:04 pm

1 stop5h 18m

Boise Air Term. Gowen Fld

Mon 2/9

6:23 am-10:59 am

1 stop5h 36m

$197

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 1/8

7:56 pm-10:57 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Mon 1/12

6:09 pm-7:16 pm

Nonstop2h 07m

$197

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 1/16

11:53 am-3:10 pm

1 stop26h 17m

Boise Air Term. Gowen Fld

Mon 1/19

5:55 pm-8:36 pm

1 stop27h 41m

$206

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 1/15

6:10 am-1:25 pm

1 stop6h 15m

Boise Air Term. Gowen Fld

Sun 1/18

2:01 pm-7:37 am

2 stops18h 36m

$212

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 3/3

6:14 am-3:08 pm

1 stop7h 54m

$88

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 1/24

11:53 am-6:22 pm

1 stop5h 29m

$88

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 17 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Boise flight deals on Cheapflights vs. eDreams >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 December 12, 2025.

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 December 14, 2025.

It’s typically best to fly out from Ontario to Boise in the evening. Doing so could potentially save you 49% on the flight price compared to flying at noon, which is usually more expensive.

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 December 14, 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
11,451 reviews

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,451 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,250 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,092 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,052 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 and Alaska Airlines can get you from Ontario to Boise in just under 1h 59m. Your travel time can differ by up to 3h 29m. 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 $153, 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 United Airlines and Alaska Airlines - these airlines can fly you to your destination from $154 and $171, respectively. Users have found that Delta is 53% 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 cheapest flights from Ontario to Boise?

    Looking for the cheapest flight from Ontario to Boise? While on average our users pay $177, our data indicates the cheapest price to be $137. The most popular route (Ontario - Boise Air Term. Gowen Fld), is priced around $147.

  • 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 December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$158Average$258FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$171Average$247FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$196Average$315FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$220Average$350FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$258Average$516FlexibilityNo cancel feeOn-time71%

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