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Ontario

$156+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — YYZ
May 31 — Jun 71
Sun 5/31
Sun 6/7
1 adult, Economy
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Cheap 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 May 1, 2026.

This Delta deal was found by Cheapflights users on 4/28. 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 6/95:20 am
GEG
-
YYZ
1 stop8h 15m
Delta
Tue 6/166:30 am
YYZ
-
GEG
1 stop8h 10m
Delta
Deal found 4/28$370
This Delta deal was found by Cheapflights users on 4/26. 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 5/106:00 am
BOI
-
YYZ
1 stop8h 35m
Delta
Wed 5/131:34 pm
YYZ
-
BOI
1 stop10h 54m
Delta
Deal found 4/26$370
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:01 pm
BOI
-
YYZ
1 stop9h 59m
United Airlines
Sat 9/264:18 pm
YYZ
-
BOI
1 stop7h 13m
United Airlines
Deal found 4/29$377
This Delta deal was found by Cheapflights users on 4/29. 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 6/32:16 pm
GEG
-
YYZ
1 stop5h 58m
Delta
Sun 6/76:30 am
YYZ
-
GEG
1 stop8h 10m
Delta
Deal found 4/29$381
This Delta deal was found by Cheapflights users on 4/29. 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.
Thu 6/411:39 pm
BOI
-
YYZ
1 stop10h 40m
Delta
Mon 6/85:45 pm
YYZ
-
BOI
1 stop8h 24m
Delta
Deal found 4/29$381
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/276:26 am
BOI
-
YYZ
1 stop14h 30m
American Airlines
Wed 6/37:20 am
YYZ
-
BOI
1 stop9h 00m
American Airlines
Deal found 4/29$382
This Rumbo deal was found by Cheapflights users on 4/29. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 pm
BOI
-
YYZ
2 stops10h 55m
WestJet
Wed 6/310:00 am
YYZ
-
BOI
2 stops14h 11m
WestJet
Deal found 4/29$384
This Delta deal was found by Cheapflights users on 4/27. 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 7/112:50 pm
BOI
-
YYZ
1 stop6h 23m
Delta
Mon 7/202:24 pm
YYZ
-
BOI
2 stops11h 41m
Delta
Deal found 4/27$386
This Delta deal was found by Cheapflights users on 4/29. 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.
Thu 9/1710:45 pm
GEG
-
YYZ
1 stop8h 37m
Delta
Mon 9/2111:30 am
YYZ
-
GEG
1 stop12h 59m
Delta
Deal found 4/29$387
This Delta deal was found by Cheapflights users on 4/28. 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.
Fri 11/611:30 pm
BOI
-
YYZ
1 stop8h 54m
Delta
Tue 11/105:10 pm
YYZ
-
BOI
1 stop8h 45m
Delta
Deal found 4/28$387
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 7/1012:35 pm
GEG
-
YYZ
1 stop7h 38m
Delta
Fri 7/176:30 am
YYZ
-
GEG
1 stop9h 51m
Delta
Deal found 4/29$388
This Delta deal was found by Cheapflights users on 4/29. 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.
Thu 9/2411:30 pm
BOI
-
YYZ
1 stop8h 52m
Delta
Thu 10/16:30 am
YYZ
-
BOI
1 stop9h 33m
Delta
Deal found 4/29$388

Find flight deals from Idaho to Ontario

Keep the following information in mind while searching for Idaho to Ontario flight deals. Data was last updated May 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$370
(Delta)

One-way from

$156
(United Airlines)

Popular in

March

Cheapest in

January

Average price

$752
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Toronto (YTO) flights.
Search Deals
From Idaho to Ontario
Search Deals
One-way flight from Idaho to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 1, 2026.
Use the filters below to find and compare flights from Idaho to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Thu 6/11

5:20 am-4:35 pm

1 stop8h 15m

Toronto Pearson Intl

Thu 6/18

5:45 pm-11:59 pm

1 stop9h 14m

$370

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Tue 6/9

5:20 am-4:35 pm

1 stop8h 15m

Toronto Pearson Intl

Tue 6/16

6:30 am-11:40 am

1 stop8h 10m

$370

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Wed 9/23

7:01 pm-7:00 am

1 stop9h 59m

Toronto Pearson Intl

Thu 10/1

6:30 am-3:31 pm

1 stop11h 01m

$377

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sat 6/6

6:41 pm-8:55 am

2 stops12h 14m

Toronto Pearson Intl

Mon 6/15

5:45 pm-10:05 pm

1 stop6h 20m

$380

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Sun 5/24

6:49 am-11:41 pm

2 stops13h 52m

Toronto Pearson Intl

Sun 5/31

6:30 am-3:58 pm

2 stops12h 28m

$385

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Fri 5/29

6:45 pm-11:15 am

2 stops13h 30m

Toronto Pearson Intl

Fri 6/5

12:29 pm-6:01 pm

2 stops8h 32m

$385

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sun 9/13

11:30 pm-12:15 pm

1 stop10h 45m

Toronto Pearson Intl

Thu 9/24

2:15 pm-11:56 pm

2 stops11h 41m

$386

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Thu 9/17

10:45 pm-10:22 am

1 stop8h 37m

Toronto Pearson Intl

Mon 9/21

11:30 am-9:29 pm

1 stop12h 59m

$387

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Fri 7/10

12:35 pm-11:13 pm

1 stop7h 38m

Toronto Pearson Intl

Fri 7/17

6:30 am-1:21 pm

1 stop9h 51m

$388

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Thu 9/24

5:40 am-6:25 pm

1 stop10h 45m

Toronto Pearson Intl

Sun 9/27

1:30 pm-10:32 pm

1 stop11h 02m

$388

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 60 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from Idaho to Region of Ontario (average of $158). Flying from Idaho to Region of Ontario in February is currently the most expensive (average of $449). 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.

How much does it cost to fly round-trip from Idaho 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 May 1, 2026.
Read through reviews of airlines operating flights from Idaho to Ontario, such as Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,464 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,464 reviews
Delta
7.9
Good
8,464 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,675 reviews
Delta
7.9
Good
8,464 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

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

    A quick flight from Idaho to Region of Ontario can take about 8h 15m. Delta provides one of the quickest options available for as low as $370. The distance between Idaho and Region of Ontario is about 1831 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Idaho to Region of Ontario one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $118. Delta flights start at $142 while deals on United Airlines start at $164 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, May is the cheapest month in which you can book a flight from Idaho to Region of Ontario (average of $158). Flying from Idaho to Region of Ontario in February is currently the most expensive (average of $449). 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 2 airlines flying from Idaho to Ontario

Discover the top 2 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 May 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$151Average$658FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$416FlexibilityNo cancel feeOn-timeN/A

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