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$81+ Cheap flights from Boise to Ontario (BOI - ONT)

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ONT
Mar 10 — Mar 171
Mon 3/10
Mon 3/17
1 adult, Economy
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The best prices from Boise Air Term. Gowen Fld to Ontario are usually found in September or April, booked 36 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Boise to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Ontario (ONT). 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 March 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$238
(Hawaiian Airlines)

One-way from

$81
(Frontier)

Popular in

November

Cheapest in

September

Average price

$343
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Ontario flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Ontario flights.
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From Boise Air Term. Gowen Fld to Ontario
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One-way flight from Boise Air Term. Gowen Fld to Ontario
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Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Boise to Ontario

Cheapest flights from Boise to Ontario
Explore the most affordable flight options available from Boise to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 5, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 3/5. 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 4/17:59 pmBOI - ONT
1 stop5h 00mHawaiian Airlines
Tue 4/86:00 amONT - BOI
1 stop5h 32mHawaiian Airlines
Deal found 3/5$238
This Delta deal was found by Cheapflights users on 3/4. 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 5/74:49 pmBOI - ONT
1 stop6h 46mDelta
Sun 5/111:10 pmONT - BOI
1 stop4h 16mDelta
Deal found 3/4$250
This Booking.com deal was found by Cheapflights users on 3/4. 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.
Tue 6/312:36 pmBOI - ONT
1 stop12h 23mFrontier
Sat 6/712:59 amONT - BOI
1 stop9h 48mFrontier
Deal found 3/4$254
This Southwest deal was found by Cheapflights users on 3/4. 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.
Thu 5/15:35 amBOI - ONT
1 stop4h 35mSouthwest
Mon 5/55:45 amONT - BOI
2 stops6h 55mSouthwest
Deal found 3/4$272
This Alaska Airlines deal was found by Cheapflights users on 3/5. 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 5/310:26 amBOI - ONT
2 stops11h 03mAlaska Airlines
Tue 5/66:00 amONT - BOI
1 stop5h 16mAlaska Airlines
Deal found 3/5$276
This United Airlines deal was found by Cheapflights users on 3/4. 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.
Thu 8/77:50 amBOI - ONT
1 stop5h 32mUnited Airlines
Sun 8/106:43 pmONT - BOI
1 stop3h 45mUnited Airlines
Deal found 3/4$321
This United deal was found by Cheapflights users on 3/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1512:50 pmBOI - ONT
1 stop6h 14mMultiple Airlines
Sat 3/225:44 pmONT - BOI
1 stop5h 15mMultiple Airlines
Deal found 3/4$1,171

Find flights from Boise to Ontario within your budget

Customize your flight search to find flights from Boise to Ontario 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 March 5, 2025.

Fly from

Boise

Fly to

Ontario

Route

Depart

Return

Price

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 4/1

7:59 pm-11:59 pm

1 stop5h 00m

Ontario

Tue 4/8

6:00 am-12:32 pm

1 stop5h 32m

$238

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 5/7

4:49 pm-10:35 pm

1 stop6h 46m

Ontario

Sun 5/11

1:10 pm-6:26 pm

1 stop4h 16m

$250

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 6/3

12:36 pm-11:59 pm

1 stop12h 23m

Ontario

Sat 6/7

12:59 am-11:47 am

1 stop9h 48m

$254

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 5/1

5:35 am-9:10 am

1 stop4h 35m

Ontario

Mon 5/5

5:45 am-1:40 pm

2 stops6h 55m

$272

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 5/3

10:26 am-8:29 pm

2 stops11h 03m

Ontario

Tue 5/6

6:00 am-12:16 pm

1 stop5h 16m

$276

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 8/7

7:50 am-12:22 pm

1 stop5h 32m

Ontario

Sun 8/10

6:43 pm-11:28 pm

1 stop3h 45m

$321

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 3/15

12:50 pm-6:04 pm

1 stop6h 14m

Ontario

Sat 3/22

5:44 pm-11:59 pm

1 stop5h 15m

$1,171

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 5/20

2:27 pm-11:59 pm

1 stop10h 32m

$81

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 5/6

6:03 am-9:16 am

1 stop4h 13m

$119

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 4/5

7:59 pm-11:59 pm

1 stop5h 00m

$130

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/4

Showing 1-10 of 14 results
1
2

Compare providers for flights from Boise to Ontario

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 Boise to Ontario in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 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 Boise-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Ontario 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 Boise-Ontario 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 Boise to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Boise 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.

Travel insights for flights from Boise to Ontario

Get recent, data-driven insights about flights from Boise to Ontario including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Boise to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Ontario. Price data was last updated on February 28, 2025.

The best time to book flights from Boise to Ontario is 36 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 Boise to Ontario?

Currently, August is the cheapest month in which you can book a flight from Boise to Ontario (average of $246). Flying from Boise to Ontario in March is currently the most expensive (average of $313). 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 BOI to ONT?

Find hourly flight availability from Boise to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 5, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 17% on flights from Boise to Ontario by exploring options for tickets in the afternoon.

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

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

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

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated March 5, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Boise to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,321 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,321 reviews
Southwest
8.1
Very good
4,321 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines
8.0
Very good
9,711 reviews
Southwest
8.1
Very good
4,321 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
8,044 reviews
Southwest
8.1
Very good
4,321 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines
7.9
Good
2,318 reviews
Southwest
8.1
Very good
4,321 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines
7.4
Good
8,655 reviews
Southwest
8.1
Very good
4,321 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

Find useful and relevant information for your journey from Boise to Ontario. 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 Boise to Ontario round-trip?

    According to our current data, Hawaiian Airlines ($238), Delta ($250), and Frontier ($254) offers the cheapest pricing from Boise to Ontario. Hawaiian Airlines is 30% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Boise to Ontario are Frontier ($81), Alaska Airlines ($119), and Hawaiian Airlines ($130).

  • Can I find deals for flights from Boise to Ontario that include hotel bookings?

    Yes. In addition to deals on Boise to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Ontario.

  • Can I find deals for business class flights from Boise to Ontario?

    Yes. Cheapflights offers flight deals from Boise to Ontario 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 Boise to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Boise to Ontario (average of $246). Flying from Boise to Ontario in March is currently the most expensive (average of $313). 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.

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Alternative routes for Boise to Ontario

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Top 4 airlines flying from Boise to Ontario

Discover the top 4 airlines that operate flights from Boise to Ontario. 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 March 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$201Average$329FlexibilityNo cancel feeOn-time75%
DeltaCheapest$219Average$310FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$232Average$359FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$240Average$361FlexibilityNo cancel feeOn-time63%
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