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$69+ Cheap flights from Ontario (ONT) 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
feb. 6 — feb. 131
vie. 2/6
vie. 2/13
1 adult, Economy
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Cheap flight deals from Ontario to Idaho

Keep the following information in mind while searching for Ontario to Idaho flight deals. Data was last updated enero 7, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$117
(Alaska Airlines)

One-way from

$69
(Delta)

Popular in

December

Cheapest in

February

Average price

$263

Good round-trip deal

$137 or less
Provider with most accurate pricing for Los Angeles-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Boise Air Term. Gowen Fld flights.
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From Ontario to Idaho
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One-way flight from Ontario to Idaho
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Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Ontario to Idaho.
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Find 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 enero 7, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/46:25 pmONT - BOI
Nonstop2h 01mAlaska Airlines
mar. 4/74:40 pmBOI - ONT
Nonstop2h 05mAlaska Airlines
Deal found 1/6$117
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/16:25 pmONT - BOI
Nonstop2h 01mAlaska Airlines
sáb. 4/44:40 pmBOI - ONT
Nonstop2h 05mAlaska Airlines
Deal found 1/6$137
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/187:59 pmONT - BOI
Nonstop1h 59mAlaska Airlines
dom. 2/225:50 pmBOI - ONT
Nonstop2h 07mAlaska Airlines
Deal found 1/6$147
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/186:14 amONT - BOI
1 stop10h 21mAlaska Airlines
mié. 2/256:07 pmBOI - ONT
Nonstop2h 07mAlaska Airlines
Deal found 1/6$152
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/286:25 pmONT - BOI
Nonstop2h 01mAlaska Airlines
sáb. 4/44:40 pmBOI - ONT
Nonstop2h 05mAlaska Airlines
Deal found 1/6$157
This American Airlines deal was found by Cheapflights users on 1/5. 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.
mié. 1/286:22 amONT - BOI
1 stop4h 45mAmerican Airlines
sáb. 1/3112:37 pmBOI - ONT
1 stop6h 43mAmerican Airlines
Deal found 1/5$159
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 1/317:56 pmONT - BOI
Nonstop2h 01mAlaska Airlines
dom. 2/15:55 pmBOI - ONT
1 stop18h 04mAlaska Airlines
Deal found 1/6$162
This Trip.com deal was found by Cheapflights users on 1/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/274:03 pmONT - BOI
1 stop5h 58mHawaiian Airlines
sáb. 1/3110:00 amBOI - ONT
1 stop6h 08mHawaiian Airlines
Deal found 1/5$163
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/16:25 pmONT - BOI
Nonstop2h 01mAlaska Airlines
dom. 4/54:40 pmBOI - ONT
Nonstop2h 05mAlaska Airlines
Deal found 1/6$167
This Alaska Airlines deal was found by Cheapflights users on 1/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/284:03 pmONT - BOI
1 stop22h 07mAlaska Airlines
mié. 2/186:07 pmBOI - ONT
Nonstop2h 07mAlaska Airlines
Deal found 1/5$172
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/57:37 pmONT - BOI
Nonstop1h 59mAlaska Airlines
dom. 3/85:50 pmBOI - ONT
Nonstop2h 07mAlaska Airlines
Deal found 1/6$177
This Expedia deal was found by Cheapflights users on 1/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/187:30 amONT - BOI
1 stop27h 21mMultiple Airlines
dom. 2/225:50 pmBOI - ONT
Nonstop2h 07mMultiple Airlines
Deal found 1/6$178

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 enero 7, 2026.
Use the filters below to find and compare flights from Ontario to Idaho that are best for you.

Fly from

Ontario

Fly to

Idaho

Route

Depart

Return

Price

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 5/9

5:05 pm-11:11 pm

1 stop5h 06m

Boise Air Term. Gowen Fld

mié. 5/13

6:00 am-12:49 pm

1 stop7h 49m

$137

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mar. 3/17

9:42 am-12:41 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

mar. 3/24

4:40 pm-5:45 pm

Nonstop2h 05m

$137

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 1/28

7:30 am-4:17 pm

1 stop7h 47m

Boise Air Term. Gowen Fld

mar. 2/10

1:00 pm-4:15 pm

1 stop4h 15m

$137

OntarioBoise

ONT - BOI

ONTBOI

Ontario

vie. 5/8

5:05 pm-11:56 pm

1 stop5h 51m

Boise Air Term. Gowen Fld

mié. 5/13

1:15 pm-4:14 pm

1 stop3h 59m

$137

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 3/4

7:59 pm-10:58 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

dom. 3/8

5:50 pm-6:57 pm

Nonstop2h 07m

$147

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 1/28

4:03 pm-11:59 pm

1 stop6h 56m

Boise Air Term. Gowen Fld

mié. 2/18

6:07 pm-7:14 pm

Nonstop2h 07m

$152

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 3/7

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

lun. 3/9

6:28 am-11:32 pm

1 stop18h 04m

$162

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mar. 1/27

4:03 pm-11:01 pm

1 stop5h 58m

Boise Air Term. Gowen Fld

sáb. 1/31

10:00 am-3:08 pm

1 stop6h 08m

$163

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 4/4

6:25 pm-9:26 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

lun. 4/6

4:40 pm-5:45 pm

Nonstop2h 05m

$167

OntarioBoise

ONT - BOI

ONTBOI

Ontario

vie. 5/1

2:59 pm-5:59 pm

Nonstop2h 00m

Boise Air Term. Gowen Fld

sáb. 5/16

4:36 pm-5:39 pm

Nonstop2h 03m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 60 results
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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 Ontario to Idaho?

Currently, November is the cheapest month in which you can book a flight from Ontario to Idaho (average of $60). Flying from Ontario to Idaho in December is currently the most expensive (average of $159). 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 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 enero 7, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Ontario to Idaho have to say. 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
11,655 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,655 reviews
Alaska Airlines
8.0
Very good
11,655 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
8.0
Very good
4,249 reviews
Alaska Airlines
8.0
Very good
11,655 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,022 reviews
Alaska Airlines
8.0
Very good
11,655 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,138 reviews
Alaska Airlines
8.0
Very good
11,655 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,088 reviews
Alaska Airlines
8.0
Very good
11,655 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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.

  • What airport do you fly from for flights from Ontario to Idaho?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Idaho from Ontario.

  • How long is the flight from Ontario to Idaho?

    Airlines like Delta and Alaska Airlines fly from Ontario to Idaho in about 2h. The time it takes to get you to your destination can typically vary by up to 5h 47m. There are 661 mi between Ontario and Idaho. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Ontario to Idaho one-way?

    The cheapest airlines for a one-way flight from Ontario to Idaho are Alaska Airlines ($69), Delta ($88), and United Airlines ($98).

  • What are the most popular routes from Ontario to Idaho?

    The most popular flight routes from Ontario to Idaho are Ontario - Jackson Hole, Ontario - Boise Air Term. Gowen Fld and Ontario - Spokane.

  • What are the cheapest flights from Ontario to Idaho?

    Looking at all options, your cheapest flight can be booked for $97. While the most popular route (Ontario - Jackson Hole) can be booked for $249 on average, our data indicates $177 when flying from Ontario to Idaho.

  • 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 Ontario to Idaho?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Idaho (average of $60). Flying from Ontario to Idaho in December is currently the most expensive (average of $159). 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 5 airlines flying from Ontario to Idaho

Discover the top 5 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 2,558,603 searches. Data last updated enero 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$137Average$246FlexibilityNo cancel feeOn-time75%
DeltaCheapest$158Average$366FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$196Average$306FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$220Average$348FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$258Average$516FlexibilityNo cancel feeOn-time71%

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