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Cheap flights from Idaho to Ontario from C$ 203

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — YYZ
6 Aug — 13 Aug1
1 adult

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 1 August 2025.

Round-trip from

C$ 473

One-way from

C$ 203

Popular in

May

Cheapest in

February

Average price

C$ 787
United Airlines
  • United Airlines
  • 6/9-13/9
  • 2 total stops
  • 22h 18m total
  • Idaho to Ontario
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United Airlines
  • United Airlines
  • 3/9
  • 1 total stop
  • 14h 33m total
  • Idaho to Ontario
Search Deals
High demand for flights, 9% potential price rise
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Cheapest flight prices on average. 4% potential price decrease (C$ 43 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 1 August 2025.

Sat 6/92:45 p.m.BOI - YYZ
1 stop14h 15mUnited Airlines
Sat 13/94:18 p.m.YYZ - BOI
1 stop8h 03mUnited Airlines
Deal found 31/7C$ 473
Wed 1/102:28 p.m.BOI - YYZ
1 stop22h 32mAlaska Airlines
Sat 4/104:45 p.m.YYZ - BOI
1 stop8h 20mAlaska Airlines
Deal found 30/7C$ 475
Wed 3/95:15 a.m.GEG - YYZ
1 stop14h 33mUnited Airlines
Sat 13/99:44 a.m.YYZ - GEG
1 stop14h 19mUnited Airlines
Deal found 30/7C$ 484
Sat 6/96:00 a.m.BOI - YYZ
1 stop8h 38mDelta
Sat 13/912:14 p.m.YYZ - BOI
2 stops13h 45mDelta
Deal found 31/7C$ 488
Wed 3/128:53 a.m.GEG - YYZ
2 stops10h 57mAmerican Airlines
Wed 10/121:10 p.m.YYZ - GEG
2 stops12h 56mAmerican Airlines
Deal found 28/7C$ 504
Thu 11/97:25 p.m.GEG - YYZ
2 stops13h 13mDelta
Sun 14/96:00 a.m.YYZ - GEG
1 stop10h 17mDelta
Deal found 29/7C$ 527
Sun 7/99:06 p.m.GEG - YYZ
1 stop19h 52mMultiple Airlines
Sat 13/910:40 a.m.YYZ - GEG
1 stop14h 45mMultiple Airlines
Deal found 30/7C$ 536
Wed 20/86:52 p.m.IDA - YYZ
2 stops13h 31mDelta
Tue 26/85:43 p.m.YYZ - IDA
1 stop6h 44mDelta
Deal found 29/7C$ 548
Thu 4/91:38 p.m.BOI - YYZ
1 stop7h 12mAmerican Airlines
Mon 8/96:29 p.m.YYZ - BOI
1 stop19h 58mAmerican Airlines
Deal found 29/7C$ 562
Thu 11/93:57 p.m.IDA - YYZ
1 stop21h 03mAlaska Airlines
Thu 18/94:45 p.m.YYZ - IDA
1 stop7h 54mAlaska Airlines
Deal found 28/7C$ 587
Tue 2/98:51 p.m.GEG - YYZ
1 stop15h 09mAlaska Airlines
Tue 9/94:45 p.m.YYZ - GEG
1 stop9h 01mAlaska Airlines
Deal found 29/7C$ 588
Fri 12/910:55 p.m.IDA - YYZ
1 stop18h 50mMultiple Airlines
Fri 19/99:30 a.m.YYZ - IDA
1 stop8h 35mMultiple Airlines
Deal found 28/7C$ 609

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 629,999 searches. Data last updated 1 August 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 4/9

2:16 p.m.-6:12 a.m.

2 stops13h 56m

Toronto Pearson Intl

Mon 8/9

9:45 a.m.-8:31 p.m.

1 stop12h 46m

C$ 458

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sat 6/9

2:45 p.m.-7:00 a.m.

1 stop14h 15m

Toronto Pearson Intl

Sat 13/9

4:18 p.m.-10:21 p.m.

1 stop8h 03m

C$ 473

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Wed 1/10

2:28 p.m.-3:00 p.m.

1 stop22h 32m

Toronto Pearson Intl

Sat 4/10

4:45 p.m.-11:05 p.m.

1 stop8h 20m

C$ 475

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Wed 3/9

5:15 a.m.-10:48 p.m.

1 stop14h 33m

Toronto Pearson Intl

Sat 13/9

9:44 a.m.-9:03 p.m.

1 stop14h 19m

C$ 484

BoiseToronto

BOI - YYZ

BOIYYZ

Boise Air Term. Gowen Fld

Sat 6/9

6:00 a.m.-4:38 p.m.

1 stop8h 38m

Toronto Pearson Intl

Sat 13/9

12:14 p.m.-11:59 p.m.

2 stops13h 45m

C$ 488

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Wed 3/12

8:53 a.m.-10:50 p.m.

2 stops10h 57m

Toronto Pearson Intl

Wed 10/12

1:10 p.m.-11:06 p.m.

2 stops12h 56m

C$ 504

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Thu 11/9

7:25 p.m.-11:38 a.m.

2 stops13h 13m

Toronto Pearson Intl

Sun 14/9

6:00 a.m.-1:17 p.m.

1 stop10h 17m

C$ 527

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Sun 7/9

9:06 p.m.-7:58 p.m.

1 stop19h 52m

Toronto Pearson Intl

Sat 13/9

10:40 a.m.-10:25 p.m.

1 stop14h 45m

C$ 536

Idaho FallsToronto

IDA - YYZ

IDAYYZ

Idaho Falls Fanning Field

Wed 20/8

6:52 p.m.-10:23 a.m.

2 stops13h 31m

Toronto Pearson Intl

Tue 26/8

5:43 p.m.-10:27 p.m.

1 stop6h 44m

C$ 548

Idaho FallsToronto

IDA - YYZ

IDAYYZ

Idaho Falls Fanning Field

Thu 11/9

3:57 p.m.-3:00 p.m.

1 stop21h 03m

Toronto Pearson Intl

Thu 18/9

4:45 p.m.-10:39 p.m.

1 stop7h 54m

C$ 587

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/7

Showing 1-10 of 34 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 C$ 167). Flying from Idaho to Region of Ontario in July is currently the most expensive (average of C$ 258). 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.

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 1 August 2025.
Check out reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Idaho to Ontario to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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
2,978 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as C$ 203. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from Idaho to Region of Ontario for a low price.

  • 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 C$ 167). Flying from Idaho to Region of Ontario in July is currently the most expensive (average of C$ 258). 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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How does Cheapflights help users find flights from Idaho to Ontario?

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Idaho to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Idaho to Ontario become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ontario from Idaho today and book when prices fit your budget.

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