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Cheap flights from Ontario to Idaho from C$ 268

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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BOI
15 Jul — 22 Jul1
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 15 June 2026.

Fri 18/95:49 p.m.
YYZ
-
BOI
1 stop8h 09m
Delta
Sun 20/911:35 p.m.
BOI
-
YYZ
1 stop10h 44m
Delta
Deal found 11/6C$ 457
Sat 4/76:00 a.m.
YYZ
-
GEG
2 stops16h 26m
Delta
Sat 11/712:54 p.m.
GEG
-
YYZ
1 stop8h 04m
Delta
Deal found 12/6C$ 457
Thu 20/85:50 p.m.
YYZ
-
GEG
2 stops9h 09m
Delta
Mon 24/810:56 p.m.
GEG
-
YYZ
1 stop8h 29m
Delta
Deal found 11/6C$ 458
Sat 4/76:30 a.m.
YYZ
-
GEG
1 stop14h 56m
United Airlines
Sat 11/75:00 a.m.
GEG
-
YYZ
1 stop13h 32m
United Airlines
Deal found 11/6C$ 498
Fri 24/77:24 p.m.
YYZ
-
GEG
1 stop6h 42m
Delta
Sun 2/87:00 a.m.
GEG
-
YYZ
2 stops13h 13m
Delta
Deal found 14/6C$ 499
Sat 19/97:25 p.m.
YTZ
-
BOI
2 stops16h 10m
United Airlines
Wed 23/97:05 p.m.
BOI
-
YTZ
2 stops13h 02m
United Airlines
Deal found 14/6C$ 528
Tue 7/77:45 a.m.
YYZ
-
GEG
2 stops16h 20m
United Airlines
Tue 14/74:13 p.m.
GEG
-
YYZ
2 stops17h 22m
United Airlines
Deal found 14/6C$ 541
Tue 21/76:30 a.m.
YYZ
-
GEG
1 stop9h 51m
Delta
Thu 23/77:00 a.m.
GEG
-
YYZ
2 stops13h 13m
Delta
Deal found 15/6C$ 542
Mon 21/91:30 p.m.
YYZ
-
BOI
2 stops27h 42m
WestJet
Thu 24/98:22 a.m.
BOI
-
YYZ
2 stops20h 33m
WestJet
Deal found 11/6C$ 577
Mon 27/75:15 p.m.
YYZ
-
GEG
2 stops22h 22m
United Airlines
Tue 4/85:00 a.m.
GEG
-
YYZ
1 stop13h 32m
United Airlines
Deal found 14/6C$ 581
Mon 17/86:40 p.m.
YYZ
-
BOI
1 stop16h 55m
United Airlines
Wed 26/85:44 p.m.
BOI
-
YYZ
2 stops16h 51m
United Airlines
Deal found 11/6C$ 583
Mon 21/99:00 p.m.
YYZ
-
BOI
1 stop16h 26m
United Airlines
Thu 24/92:44 p.m.
BOI
-
YYZ
2 stops19h 05m
United Airlines
Deal found 11/6C$ 586

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 15 June 2026.

Round-trip from

C$ 457

One-way from

C$ 268

Popular in

December

Cheapest in

November

Average price

C$ 567
Delta
  • Delta
  • 18/9-20/9
  • 2 total stops
  • 18h 53m total
  • Ontario to Idaho
Search Deals
United Airlines
  • United Airlines
  • 11/7
  • 1 total stop
  • 12h 45m total
  • Ontario to Idaho
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 21 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 629,999 searches. Data last updated 15 June 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 18/9

1:34 p.m.-10:17 p.m.

1 stop10h 43m

Boise Air Term. Gowen Fld

Sun 20/9

11:35 p.m.-12:19 p.m.

1 stop10h 44m

C$ 457

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 4/7

7:30 a.m.-8:30 p.m.

2 stops16h 00m

Spokane

Sat 11/7

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

1 stop13h 32m

C$ 457

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Sat 4/7

6:00 a.m.-7:26 p.m.

2 stops16h 26m

Spokane

Sat 11/7

7:00 a.m.-11:13 p.m.

2 stops13h 13m

C$ 458

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Fri 24/7

7:24 p.m.-11:06 p.m.

1 stop6h 42m

Spokane

Sun 2/8

7:00 a.m.-11:13 p.m.

2 stops13h 13m

C$ 499

TorontoBoise

YTZ - BOI

YTZBOI

Toronto Island

Sat 19/9

7:25 p.m.-9:35 a.m.

2 stops16h 10m

Boise Air Term. Gowen Fld

Wed 23/9

7:05 p.m.-10:07 a.m.

2 stops13h 02m

C$ 528

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Tue 25/8

7:00 a.m.-8:46 p.m.

2 stops16h 46m

Spokane

Mon 31/8

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

1 stop13h 32m

C$ 581

TorontoSpokane

YYZ - GEG

YYZGEG

Toronto Pearson Intl

Mon 27/7

5:15 p.m.-12:37 p.m.

2 stops22h 22m

Spokane

Tue 4/8

4:13 p.m.-9:54 a.m.

2 stops14h 41m

C$ 581

TorontoBoise

YYZ - BOI

YYZBOI

Toronto Pearson Intl

Mon 17/8

6:40 p.m.-9:35 a.m.

1 stop16h 55m

Boise Air Term. Gowen Fld

Wed 26/8

5:44 p.m.-12:35 p.m.

2 stops16h 51m

C$ 583

TorontoIdaho Falls

YYZ - IDA

YYZIDA

Toronto Pearson Intl

Sat 31/10

6:30 a.m.-6:14 p.m.

2 stops13h 44m

Idaho Falls Fanning Field

Wed 4/11

6:00 a.m.-4:39 p.m.

1 stop8h 39m

C$ 622

TorontoIdaho Falls

YYZ - IDA

YYZIDA

Toronto Pearson Intl

Sat 31/10

8:50 a.m.-5:22 p.m.

2 stops10h 32m

Idaho Falls Fanning Field

Wed 4/11

2:35 p.m.-10:44 p.m.

1 stop6h 09m

C$ 626

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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, August is the cheapest month in which you can book a flight from Region of Ontario to Idaho (average of C$ 204). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of C$ 538). 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?

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 15 June 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
12,517 reviews
Check prices

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Boarding

8.1

Entertainment

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
12,517 reviews
Alaska Airlines
7.9
Good
12,517 reviews
Check prices

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Boarding

8.1

Entertainment

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
7.9
Good
8,400 reviews
Alaska Airlines
7.9
Good
12,517 reviews
Check prices

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Boarding

8.1

Entertainment

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
9,841 reviews
Alaska Airlines
7.9
Good
12,517 reviews
Check prices

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Boarding

8.1

Entertainment

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 Delta, United Airlines, and American Airlines fly from Region of Ontario to Idaho in about 10h 43m. The time it takes to get you to your destination can typically vary by up to 9h 44m. Region of Ontario and Idaho are separated by a distance of 2919 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, August is the cheapest month in which you can book a flight from Region of Ontario to Idaho (average of C$ 204). Flying from Region of Ontario to Idaho in May is currently the most expensive (average of C$ 538). 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 15 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 397AverageC$ 552FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 403AverageC$ 777FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 431AverageC$ 516FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

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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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