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$119+ Cheap flights from Boise (BOI) to Ontario

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — YYZ
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Boise to Ontario

Keep the following information in mind while searching for Boise to Ontario flight deals. Data was last updated September 11, 2025.

Round-trip from

$341
(Kiwi.com)

One-way from

$119
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$508
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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High demand for flights, 10% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/158:02 amBOI - YYZ
1 stop9h 56mMultiple Airlines
Tue 10/219:30 amYYZ - BOI
1 stop15h 45mMultiple Airlines
Deal found 9/9$341
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/86:30 amBOI - YYZ
2 stops15h 52mMultiple Airlines
Wed 10/159:45 amYYZ - BOI
1 stop15h 30mMultiple Airlines
Deal found 9/9$344
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/231:39 pmBOI - YYZ
1 stop19h 17mAmerican Airlines
Tue 12/304:40 pmYYZ - BOI
1 stop8h 00mAmerican Airlines
Deal found 9/11$351
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:02 amBOI - YYZ
2 stops12h 50mMultiple Airlines
Thu 10/164:45 pmYYZ - BOI
1 stop8h 20mMultiple Airlines
Deal found 9/10$355
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/43:20 pmBOI - YYZ
1 stop6h 00mDelta
Sat 10/119:45 amYYZ - BOI
2 stops16h 09mDelta
Deal found 9/11$370
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2611:39 pmBOI - YYZ
2 stops13h 06mDelta
Sun 11/212:25 pmYYZ - BOI
1 stop12h 04mDelta
Deal found 9/11$383
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/246:16 pmBOI - YYZ
2 stops24h 36mMultiple Airlines
Fri 10/317:55 pmYYZ - BOI
1 stop29h 54mMultiple Airlines
Deal found 9/9$389
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/191:26 pmBOI - YYZ
1 stop19h 33mAmerican Airlines
Tue 10/216:49 amYYZ - BOI
1 stop17h 33mAmerican Airlines
Deal found 9/10$417
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/251:26 pmBOI - YUL
1 stop20h 14mAmerican Airlines
Sat 11/15:24 pmYUL - BOI
1 stop22h 42mAmerican Airlines
Deal found 9/10$553
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/53:10 pmBOI - YUL
1 stop18h 44mUnited Airlines
Tue 10/78:05 amYUL - BOI
1 stop13h 10mUnited Airlines
Deal found 9/11$658
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/2512:35 pmBOI - YUL
2 stops21h 31mUnited Airlines
Sat 11/18:20 amYUL - BOI
2 stops15h 16mUnited Airlines
Deal found 9/10$665
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/59:00 amBOI - YUL
2 stops12h 29mDelta
Tue 10/77:00 amYUL - BOI
2 stops11h 06mDelta
Deal found 9/11$698

Cheapflights Fare Finder

 
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 September 11, 2025.
Use the filters below to find and compare flights from Boise to Ontario that are best for you.

Fly from

Boise

Fly to

Ontario

Route

Depart

Return

Price

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Wed 10/8

6:30 am-12:22 am

2 stops15h 52m

Toronto Pearson Intl

Wed 10/15

9:45 am-11:15 pm

1 stop15h 30m

$344

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Tue 12/23

1:39 pm-10:56 am

1 stop19h 17m

Toronto Pearson Intl

Tue 12/30

4:40 pm-10:40 pm

1 stop8h 00m

$351

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Wed 10/15

8:02 am-10:52 pm

2 stops12h 50m

Toronto Pearson Intl

Thu 10/16

4:45 pm-11:05 pm

1 stop8h 20m

$355

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sat 2/28

5:30 am-3:35 pm

1 stop8h 05m

Toronto Pearson Intl

Wed 3/4

4:45 pm-10:20 pm

1 stop7h 35m

$362

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sat 10/4

3:20 pm-11:20 pm

1 stop6h 00m

Toronto Pearson Intl

Sat 10/11

9:45 am-11:54 pm

2 stops16h 09m

$370

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sun 10/26

5:42 am-6:30 pm

1 stop10h 48m

Toronto Pearson Intl

Sun 11/2

12:25 pm-10:29 pm

1 stop12h 04m

$373

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Fri 12/5

11:10 am-11:59 pm

2 stops10h 49m

Toronto Pearson Intl

Sun 12/7

3:38 pm-12:10 am

2 stops10h 32m

$388

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Fri 10/24

6:16 pm-8:52 pm

2 stops24h 36m

Toronto Pearson Intl

Fri 10/31

7:55 pm-11:49 pm

1 stop29h 54m

$389

BoiseMontreal

BOI - YUL

BOIYUL

Boise Air Term. Gowen Fld

Sat 10/25

1:26 pm-11:40 am

1 stop20h 14m

Montreal Pierre Elliott Trudeau Intl

Sat 11/1

5:24 pm-2:06 pm

1 stop22h 42m

$553

BoiseMontreal

BOI - YUL

BOIYUL

Boise Air Term. Gowen Fld

Wed 2/18

3:00 pm-8:47 am

2 stops15h 47m

Montreal Pierre Elliott Trudeau Intl

Fri 2/20

7:45 pm-2:09 pm

2 stops20h 24m

$574

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 26 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Boise to Ontario

What is the cheapest month to book a flight from Boise to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Boise to Region of Ontario (average of $243). Flying from Boise to Region of Ontario in August is currently the most expensive (average of $348). 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 ON?

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 September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boise to Region of Ontario as you normally would.

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

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 September 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Boise to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

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
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

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
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

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.
Air Canada
7.1
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

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 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 airport do you fly from for flights from Boise to Ontario?

    Boise Air Term. Gowen Fld (BOI), located 3.3 mi from the city center, is the airport you fly out of when you book flights from Boise to Ontario.

  • How long is the flight from Boise to Region of Ontario?

    A quick flight from Boise to Region of Ontario can take about 6h. American Airlines provides one of the quickest options available for as low as $370. The distance from Boise to Region of Ontario is about 1814 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Boise to Region of Ontario?

    Most travelers choose Boise Air Term. Gowen Fld - Toronto Pearson Intl, Boise Air Term. Gowen Fld - Montreal Pierre Elliott Trudeau Intl or Boise Air Term. Gowen Fld - Hamilton when deciding on the best route from Boise to Region of Ontario.

  • 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 Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Boise to Region of Ontario (average of $243). Flying from Boise to Region of Ontario in August is currently the most expensive (average of $348). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Boise to Ontario

Discover the top 3 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$158Average$375FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$255Average$278FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$317Average$501FlexibilityNo cancel feeOn-time69%

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