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Idaho

$192+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BOI
Jul 14 — Jul 211
Tue 7/14
Tue 7/21
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 June 14, 2026.

This Delta deal was found by Cheapflights users on 6/11. 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.
Fri 9/185:49 pm
YYZ
-
BOI
1 stop8h 09m
Delta
Sun 9/2011:35 pm
BOI
-
YYZ
1 stop10h 44m
Delta
Deal found 6/11$327
This Delta deal was found by Cheapflights users on 6/12. 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 7/46:00 am
YYZ
-
GEG
2 stops16h 26m
Delta
Sat 7/1112:54 pm
GEG
-
YYZ
1 stop8h 04m
Delta
Deal found 6/12$327
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 8/205:50 pm
YYZ
-
GEG
2 stops9h 09m
Delta
Mon 8/2410:56 pm
GEG
-
YYZ
1 stop8h 29m
Delta
Deal found 6/11$328
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:40 am
YYZ
-
BOI
1 stop12h 17m
Delta
Sun 7/2610:29 am
BOI
-
YYZ
1 stop10h 44m
Delta
Deal found 6/10$342
This Delta deal was found by Cheapflights users on 6/14. 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 7/247:24 pm
YYZ
-
GEG
1 stop6h 42m
Delta
Sun 8/27:00 am
GEG
-
YYZ
2 stops13h 13m
Delta
Deal found 6/14$357
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/77:45 am
YYZ
-
GEG
2 stops16h 20m
United Airlines
Tue 7/144:13 pm
GEG
-
YYZ
2 stops17h 22m
United Airlines
Deal found 6/14$387
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:30 am
YYZ
-
GEG
1 stop9h 51m
Delta
Thu 7/167:00 am
GEG
-
YYZ
2 stops13h 13m
Delta
Deal found 6/10$389
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/129:45 am
YUL
-
BOI
2 stops13h 52m
United Airlines
Wed 9/97:05 pm
BOI
-
YUL
1 stop11h 11m
United Airlines
Deal found 6/12$411
This United Airlines deal was found by Cheapflights users on 6/13. 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 7/46:10 am
YUL
-
BOI
1 stop7h 22m
United Airlines
Sat 7/117:05 pm
BOI
-
YUL
1 stop11h 11m
United Airlines
Deal found 6/13$412
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:30 pm
YYZ
-
BOI
2 stops27h 42m
WestJet
Thu 9/248:22 am
BOI
-
YYZ
2 stops20h 33m
WestJet
Deal found 6/11$413
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/275:15 pm
YYZ
-
GEG
2 stops22h 22m
United Airlines
Tue 8/44:13 pm
GEG
-
YYZ
2 stops14h 41m
United Airlines
Deal found 6/14$416
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/113:45 pm
YUL
-
BOI
1 stop21h 31m
American Airlines
Sat 9/123:21 pm
BOI
-
YUL
1 stop18h 23m
American Airlines
Deal found 6/12$417

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 June 14, 2026.

Round-trip from

$327
(Delta)

One-way from

$192
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$406
From Ontario to Idaho
Search Deals
One-way flight from Ontario to Idaho
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($5 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 June 2026
Search Deals

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 June 14, 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

Fri 9/18

1:34 pm-10:17 pm

1 stop10h 43m

Boise Air Term. Gowen Fld

Sun 9/20

11:35 pm-12:19 pm

1 stop10h 44m

$327

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Mon 9/21

6:30 am-10:41 pm

1 stop19h 11m

Spokane

Mon 9/28

5:00 am-9:32 pm

1 stop13h 32m

$327

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sun 9/20

7:24 pm-11:04 pm

1 stop6h 40m

Spokane

Wed 9/23

7:00 am-10:59 pm

2 stops12h 59m

$327

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 7/4

7:00 am-11:48 am

1 stop7h 48m

Spokane

Sat 7/11

5:00 am-9:32 pm

1 stop13h 32m

$327

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Wed 10/14

2:15 pm-9:05 pm

2 stops9h 50m

Spokane

Fri 10/16

12:40 pm-12:01 am

1 stop8h 21m

$328

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 7/4

6:00 am-7:26 pm

2 stops16h 26m

Spokane

Sat 7/11

7:00 am-11:13 pm

2 stops13h 13m

$328

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Wed 7/22

11:40 am-9:57 pm

1 stop12h 17m

Boise Air Term. Gowen Fld

Sun 7/26

10:29 am-11:13 pm

1 stop10h 44m

$342

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Mon 8/17

6:40 pm-9:35 am

1 stop16h 55m

Boise Air Term. Gowen Fld

Wed 8/26

5:44 pm-12:35 pm

2 stops16h 51m

$417

MontrealBoise

YUL - BOI

YULBOI

Montreal Pierre Elliott Trudeau Intl

Sat 10/31

7:00 am-8:17 pm

2 stops15h 17m

Boise Air Term. Gowen Fld

Mon 11/2

5:40 am-11:10 pm

2 stops15h 30m

$431

MontrealBoise

YUL - BOI

YULBOI

Montreal Pierre Elliott Trudeau Intl

Fri 9/11

5:10 pm-11:58 pm

2 stops8h 48m

Boise Air Term. Gowen Fld

Tue 9/15

5:20 am-6:53 pm

2 stops11h 33m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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, August is the cheapest month in which you can book a flight from Region of Ontario to Idaho (average of $146). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of $385). 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?

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 9h 57m. Delta provides one of the quickest options available for as low as $461. Region of Ontario and Idaho are separated by a distance of 1546 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, August is the cheapest month in which you can book a flight from Region of Ontario to Idaho (average of $146). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of $385). 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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