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$147+ Cheap flights from Idaho 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — YYZ
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from Idaho to Ontario

Keep the following information in mind while searching for Idaho to Ontario flight deals. Data was last updated August 1, 2025.

Round-trip from

$331
(Kiwi.com)

One-way from

$147
(United Airlines)

Popular in

May

Cheapest in

February

Average price

$569
From Idaho to Ontario
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One-way flight from Idaho to Ontario
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High demand for flights, 9% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Idaho to Ontario

Cheapest flights from Idaho to Ontario
Explore the most affordable flight options available from Idaho to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Thu 9/42:16 pmBOI - YYZ
2 stops13h 56mMultiple Airlines
Mon 9/89:45 amYYZ - BOI
1 stop12h 46mMultiple Airlines
Deal found 7/31$331
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/62:45 pmBOI - YYZ
1 stop14h 15mUnited Airlines
Sat 9/134:18 pmYYZ - BOI
1 stop8h 03mUnited Airlines
Deal found 7/31$342
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 10/12:28 pmBOI - YYZ
1 stop22h 32mAlaska Airlines
Sat 10/44:45 pmYYZ - BOI
1 stop8h 20mAlaska Airlines
Deal found 7/30$343
This United Airlines deal was found by Cheapflights users on 8/1. 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 9/312:35 pmGEG - YYZ
1 stop15h 25mUnited Airlines
Tue 9/167:00 amYYZ - GEG
1 stop7h 27mUnited Airlines
Deal found 8/1$349
This Delta deal was found by Cheapflights users on 7/31. 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 9/66:00 amBOI - YYZ
1 stop8h 38mDelta
Sat 9/1312:14 pmYYZ - BOI
2 stops13h 45mDelta
Deal found 7/31$353
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 9/79:06 pmGEG - YYZ
1 stop19h 52mMultiple Airlines
Sat 9/1310:40 amYYZ - GEG
1 stop14h 45mMultiple Airlines
Deal found 7/30$387
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:52 pmIDA - YYZ
2 stops13h 31mDelta
Tue 8/265:43 pmYYZ - IDA
1 stop6h 44mDelta
Deal found 7/29$396
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/117:00 amGEG - YYZ
2 stops13h 03mAmerican Airlines
Sun 9/146:30 amYYZ - GEG
1 stop15h 47mAmerican Airlines
Deal found 7/29$421
This Delta deal was found by Cheapflights users on 7/30. 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 9/25:45 amGEG - YYZ
1 stop7h 53mDelta
Tue 9/95:43 pmYYZ - GEG
1 stop7h 47mDelta
Deal found 7/30$427
This Alaska Airlines deal was found by Cheapflights users on 8/1. 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.
Tue 9/27:44 pmGEG - YYZ
1 stop16h 16mAlaska Airlines
Tue 9/94:45 pmYYZ - GEG
2 stops18h 23mAlaska Airlines
Deal found 8/1$434
This Mytrip deal was found by Cheapflights users on 8/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/159:26 pmBOI - YUL
3 stops25h 11mMultiple Airlines
Mon 9/226:45 amYUL - BOI
2 stops15h 46mMultiple Airlines
Deal found 8/1$500
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/91:07 pmBOI - YUL
1 stop20h 38mAmerican Airlines
Fri 9/125:15 pmYUL - BOI
1 stop21h 12mAmerican Airlines
Deal found 7/30$514

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 August 1, 2025.
Use the filters below to find and compare flights from Idaho to Ontario that are best for you.

Fly from

Idaho

Fly to

Ontario

Route

Depart

Return

Price

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Thu 9/4

2:16 pm-6:12 am

2 stops13h 56m

Toronto Pearson Intl

Mon 9/8

9:45 am-8:31 pm

1 stop12h 46m

$331

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sat 9/6

2:45 pm-7:00 am

1 stop14h 15m

Toronto Pearson Intl

Sat 9/13

4:18 pm-10:21 pm

1 stop8h 03m

$342

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Wed 10/1

2:28 pm-3:00 pm

1 stop22h 32m

Toronto Pearson Intl

Sat 10/4

4:45 pm-11:05 pm

1 stop8h 20m

$343

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Wed 9/3

12:35 pm-7:00 am

1 stop15h 25m

Toronto Pearson Intl

Tue 9/16

7:00 am-11:27 am

1 stop7h 27m

$349

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sat 9/6

6:00 am-4:38 pm

1 stop8h 38m

Toronto Pearson Intl

Sat 9/13

12:14 pm-11:59 pm

2 stops13h 45m

$353

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Sun 9/7

9:06 pm-7:58 pm

1 stop19h 52m

Toronto Pearson Intl

Sat 9/13

10:40 am-10:25 pm

1 stop14h 45m

$387

Idaho FallsToronto

IDA - YYZ

IDAYYZ

Idaho Falls Fanning Field

Wed 8/20

6:52 pm-10:23 am

2 stops13h 31m

Toronto Pearson Intl

Tue 8/26

5:43 pm-10:27 pm

1 stop6h 44m

$396

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Thu 9/11

7:00 am-11:03 pm

2 stops13h 03m

Toronto Pearson Intl

Sun 9/14

6:30 am-7:17 pm

1 stop15h 47m

$421

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Tue 9/2

5:45 am-4:38 pm

1 stop7h 53m

Toronto Pearson Intl

Tue 9/9

5:43 pm-10:30 pm

1 stop7h 47m

$427

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Tue 9/2

7:44 pm-3:00 pm

1 stop16h 16m

Toronto Pearson Intl

Tue 9/9

4:45 pm-8:08 am

2 stops18h 23m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 38 results
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Best time to book a flight from Idaho to Ontario

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

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

Currently, January is the cheapest month in which you can book a flight from Idaho to Region of Ontario (average of $243). Flying from Idaho 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 ID to ON?

Find hourly flight availability from Idaho 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 August 1, 2025.

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

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 August 1, 2025.
Read through reviews of airlines operating flights from Idaho to Ontario, such as Alaska Airlines, Delta, and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,904 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
WestJet
7.2
Good
2,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Idaho 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 to fly from Idaho to Region of Ontario one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $147. Delta flights start at $152 while deals on American Airlines start at $158 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Idaho to Region of Ontario (average of $243). Flying from Idaho 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.

See more FAQs

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Alternative routes for Idaho to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Idaho to Ontario

Discover the top 4 airlines that operate flights from Idaho 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$173Average$384FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$255Average$278FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$317Average$501FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$490Average$893FlexibilityNo cancel feeOn-time67%

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