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Cheap flights from Ontario to Idaho from C$ 254

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BOI
30 Aug — 6 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Idaho

Enter your travel dates to find the best prices.

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 31 July 2026.

Fri 11/96:30 a.m.
YYZ
-
BOI
1 stop10h 01m
American Airlines
Fri 18/93:21 p.m.
BOI
-
YYZ
1 stop19h 14m
American Airlines
Deal found 28/7C$ 421
Tue 22/96:30 a.m.
YYZ
-
BOI
1 stop11h 01m
United Airlines
Sat 26/96:25 a.m.
BOI
-
YYZ
1 stop6h 49m
United Airlines
Deal found 27/7C$ 427
Sun 1/116:30 a.m.
YYZ
-
BOI
1 stop8h 05m
Delta
Tue 3/111:40 p.m.
BOI
-
YYZ
1 stop8h 19m
Delta
Deal found 28/7C$ 435
Mon 2/114:10 p.m.
YYZ
-
GEG
1 stop8h 01m
United Airlines
Fri 6/115:00 a.m.
GEG
-
YYZ
1 stop7h 02m
United Airlines
Deal found 27/7C$ 435
Sun 1/116:45 a.m.
YYZ
-
BOI
1 stop6h 45m
United Airlines
Thu 5/116:30 a.m.
BOI
-
YYZ
1 stop6h 32m
United Airlines
Deal found 28/7C$ 439
Sat 19/99:45 a.m.
YYZ
-
GEG
2 stops12h 47m
Delta
Wed 23/95:49 p.m.
GEG
-
YYZ
2 stops12h 04m
Delta
Deal found 28/7C$ 439
Sun 1/116:45 a.m.
YYZ
-
BOI
1 stop6h 45m
United Airlines
Fri 6/116:30 a.m.
BOI
-
YYZ
1 stop6h 32m
United Airlines
Deal found 28/7C$ 446
Sun 1/116:45 a.m.
YYZ
-
BOI
1 stop6h 45m
United Airlines
Wed 4/115:00 a.m.
BOI
-
YYZ
2 stops9h 47m
United Airlines
Deal found 28/7C$ 449
Sat 19/94:18 p.m.
YYZ
-
GEG
1 stop7h 56m
United Airlines
Wed 23/95:00 a.m.
GEG
-
YYZ
1 stop13h 32m
United Airlines
Deal found 28/7C$ 449
Sun 11/102:26 p.m.
YYZ
-
GEG
2 stops12h 24m
Delta
Fri 16/105:38 p.m.
GEG
-
YYZ
2 stops12h 11m
Delta
Deal found 27/7C$ 474
Tue 25/86:15 a.m.
YYZ
-
BOI
1 stop9h 27m
Delta
Wed 26/82:53 p.m.
BOI
-
YYZ
1 stop6h 17m
Delta
Deal found 26/7C$ 478
Mon 31/86:00 a.m.
YYZ
-
GEG
1 stop8h 21m
Delta
Mon 7/910:56 p.m.
GEG
-
YYZ
2 stops15h 24m
Delta
Deal found 29/7C$ 494

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 31 July 2026.

Round-trip from

C$ 421

One-way from

C$ 254

Popular in

December

Cheapest in

November

Average price

C$ 463
American Airlines
  • American Airlines
  • 11/9-18/9
  • 2 total stops
  • 29h 15m total
  • Ontario to Idaho
Search Deals
United Airlines
  • United Airlines
  • 10/9
  • 1 total stop
  • 13h 00m total
  • Ontario to Idaho
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 1 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 629,999 searches. Data last updated 31 July 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 22/9

6:30 a.m.-3:31 p.m.

1 stop11h 01m

Boise Air Term. Gowen Fld

Sat 26/9

6:25 a.m.-3:14 p.m.

1 stop6h 49m

C$ 427

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sun 30/8

6:00 a.m.-11:21 a.m.

1 stop8h 21m

Spokane

Mon 7/9

10:56 p.m.-5:20 p.m.

2 stops15h 24m

C$ 439

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 19/9

4:18 p.m.-9:14 p.m.

1 stop7h 56m

Spokane

Wed 23/9

5:00 a.m.-9:32 p.m.

1 stop13h 32m

C$ 439

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Fri 4/9

1:38 p.m.-9:30 p.m.

1 stop10h 52m

Spokane

Fri 11/9

11:43 a.m.-11:59 p.m.

1 stop9h 16m

C$ 439

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Mon 2/11

4:10 p.m.-9:11 p.m.

1 stop8h 01m

Spokane

Fri 6/11

5:00 a.m.-11:59 p.m.

2 stops15h 59m

C$ 439

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 19/9

9:45 a.m.-7:32 p.m.

2 stops12h 47m

Spokane

Wed 23/9

5:49 p.m.-8:53 a.m.

2 stops12h 04m

C$ 439

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Fri 21/8

5:50 p.m.-11:53 p.m.

1 stop9h 03m

Spokane

Thu 27/8

12:36 p.m.-11:57 p.m.

1 stop8h 21m

C$ 439

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Tue 25/8

6:15 a.m.-1:42 p.m.

1 stop9h 27m

Boise Air Term. Gowen Fld

Wed 26/8

2:53 p.m.-11:10 p.m.

1 stop6h 17m

C$ 478

TorontoBoise

YTZ - BOI

YTZBOI

Toronto Island

Tue 15/9

12:15 p.m.-11:03 p.m.

2 stops12h 48m

Boise Air Term. Gowen Fld

Sat 19/9

5:00 a.m.-6:51 p.m.

2 stops11h 51m

C$ 498

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Fri 4/9

7:30 p.m.-9:34 a.m.

2 stops16h 04m

Boise Air Term. Gowen Fld

Sun 6/9

5:00 a.m.-11:17 p.m.

1 stop16h 17m

C$ 544

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 60 resultsSorted by cheapest first
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2
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6

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 C$ 435). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of C$ 1,033). 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 C$ 683 and C$ 773 in September.
The cheapest round-trip price found within the last 5 days was C$ 421 on American Airlines (11 Sep-18 Sep).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated 31 July 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from Ontario to Idaho by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,738 reviews
Check prices

Overall

7.9

Crew

8.5

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Alaska Airlines
7.9
Good
12,738 reviews
Alaska Airlines
7.9
Good
12,738 reviews
Check prices

Overall

7.9

Crew

8.5

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Delta
7.8
Good
8,487 reviews
Alaska Airlines
7.9
Good
12,738 reviews
Check prices

Overall

7.9

Crew

8.5

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
United Airlines
7.4
Good
10,051 reviews
Alaska Airlines
7.9
Good
12,738 reviews
Check prices

Overall

7.9

Crew

8.5

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

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?

    Airlines like United Airlines, Delta, and American Airlines fly from Region of Ontario to Idaho in about 8h 21m. The time it takes to get you to your destination can typically vary by up to 12h 06m. Region of Ontario and Idaho are separated by a distance of 2947 km. This flight may include one or multiple 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 C$ 435). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of C$ 1,033). 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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Top 3 airlines flying from Ontario to Idaho

Discover the top 3 airlines that operate flights from Ontario to Idaho. 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 629,999 searches. Data last updated 31 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 399AverageC$ 555FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 404AverageC$ 818FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 433AverageC$ 518FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

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How does Cheapflights help users find flights from Ontario to Idaho?

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Yes! Cheapflights helps users easily find flights from Ontario to Idaho with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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