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Idaho

$181+ Cheap flights from Ontario to Idaho

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BOI
Aug 30 — Sep 61
Sun 8/30
Sun 9/6
1 adult, Economy
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Cheap flight deals from Ontario to Idaho

Cheapest flights from Ontario to Idaho
Explore the most affordable flight options available from Ontario to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.

This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:30 am
YYZ
-
BOI
1 stop10h 01m
American Airlines
Fri 9/183:21 pm
BOI
-
YYZ
1 stop19h 14m
American Airlines
Deal found 7/28$300
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:30 am
YYZ
-
BOI
1 stop11h 01m
United Airlines
Sat 9/266:25 am
BOI
-
YYZ
1 stop6h 49m
United Airlines
Deal found 7/27$304
This Delta deal was found by Cheapflights users on 7/28. 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.
Sun 11/16:30 am
YYZ
-
BOI
1 stop8h 05m
Delta
Wed 11/41:40 pm
BOI
-
YYZ
1 stop8h 19m
Delta
Deal found 7/28$310
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:10 pm
YYZ
-
GEG
1 stop8h 01m
United Airlines
Fri 11/65:00 am
GEG
-
YYZ
1 stop7h 02m
United Airlines
Deal found 7/27$310
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:45 am
YYZ
-
BOI
1 stop6h 45m
United Airlines
Thu 11/56:30 am
BOI
-
YYZ
1 stop6h 32m
United Airlines
Deal found 7/28$313
This Delta deal was found by Cheapflights users on 7/28. 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.
Sat 9/199:45 am
YYZ
-
GEG
2 stops12h 47m
Delta
Wed 9/235:49 pm
GEG
-
YYZ
2 stops12h 04m
Delta
Deal found 7/28$313
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:45 am
YYZ
-
BOI
1 stop6h 45m
United Airlines
Fri 11/66:30 am
BOI
-
YYZ
1 stop6h 32m
United Airlines
Deal found 7/28$318
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:45 am
YYZ
-
BOI
1 stop6h 45m
United Airlines
Wed 11/45:00 am
BOI
-
YYZ
2 stops9h 47m
United Airlines
Deal found 7/28$320
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:00 am
YYZ
-
GEG
2 stops13h 14m
United Airlines
Wed 9/235:00 am
GEG
-
YYZ
1 stop13h 32m
United Airlines
Deal found 7/28$320
This Delta deal was found by Cheapflights users on 7/27. 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.
Sun 10/112:26 pm
YYZ
-
GEG
2 stops12h 24m
Delta
Fri 10/165:38 pm
GEG
-
YYZ
2 stops12h 11m
Delta
Deal found 7/27$338
This Delta deal was found by Cheapflights users on 7/26. 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.
Tue 8/256:15 am
YYZ
-
BOI
1 stop9h 27m
Delta
Wed 8/262:53 pm
BOI
-
YYZ
1 stop6h 17m
Delta
Deal found 7/26$341
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.
Mon 8/316:00 am
YYZ
-
GEG
1 stop8h 21m
Delta
Mon 9/710:56 pm
GEG
-
YYZ
2 stops15h 24m
Delta
Deal found 7/29$352

Find flight deals from Ontario to Idaho

Keep the following information in mind while searching for Ontario to Idaho flight deals. Data was last updated July 31, 2026.

Round-trip from

$300
(American Airlines)

One-way from

$181
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$330
From Ontario to Idaho
Search Deals
One-way flight from Ontario to Idaho
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Idaho 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 July 31, 2026.
Use the filters below to find and compare flights from Ontario to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Tue 9/22

6:30 am-3:31 pm

1 stop11h 01m

Boise Air Term. Gowen Fld

Sat 9/26

6:25 am-3:14 pm

1 stop6h 49m

$304

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Sun 11/1

6:30 am-12:35 pm

1 stop8h 05m

Boise Air Term. Gowen Fld

Sat 11/7

1:40 pm-11:59 pm

1 stop8h 19m

$310

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Sun 11/1

6:30 am-12:35 pm

1 stop8h 05m

Boise Air Term. Gowen Fld

Wed 11/4

1:40 pm-11:59 pm

1 stop8h 19m

$310

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 9/19

4:18 pm-9:14 pm

1 stop7h 56m

Spokane

Wed 9/23

5:00 am-9:32 pm

1 stop13h 32m

$313

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Fri 9/4

1:38 pm-9:30 pm

1 stop10h 52m

Spokane

Fri 9/11

5:14 pm-10:23 am

2 stops14h 09m

$313

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Mon 11/2

4:10 pm-9:11 pm

1 stop8h 01m

Spokane

Fri 11/6

5:00 am-11:59 pm

2 stops15h 59m

$313

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sun 8/30

6:00 am-11:21 am

1 stop8h 21m

Spokane

Mon 9/7

10:56 pm-5:20 pm

2 stops15h 24m

$313

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 9/19

9:45 am-7:32 pm

2 stops12h 47m

Spokane

Wed 9/23

5:49 pm-8:53 am

2 stops12h 04m

$313

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Fri 8/21

5:50 pm-11:53 pm

1 stop9h 03m

Spokane

Thu 8/27

12:36 pm-11:57 pm

1 stop8h 21m

$313

MontrealBoise

YUL - BOI

YULBOI

Montreal Pierre Elliott Trudeau Intl

Sat 9/12

6:10 am-11:24 am

1 stop7h 14m

Boise Air Term. Gowen Fld

Wed 9/16

7:05 pm-8:16 am

1 stop11h 11m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Idaho

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

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

Currently, November is the cheapest month in which you can book a flight from Region of Ontario to Idaho (average of $310). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of $736). 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 Region of Ontario to Idaho?

Airfare is below average for this route at the moment.
Region of Ontario to Idaho flights typically cost between $487 and $551 in September.
The cheapest round-trip price found within the last 5 days was $300 on American Airlines (Sep 11-Sep 18).

Related info for your journey

Find useful and relevant information for your journey from Ontario to Idaho. 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 Region of Ontario to Idaho?

    A quick flight from Region of Ontario to Idaho can take about 8h 05m. United Airlines provides one of the quickest options available for as low as $310. Region of Ontario and Idaho are separated by a distance of 1814 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Region of Ontario to Idaho (average of $310). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of $736). 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 Ontario to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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