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Idaho

$89+ 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 7/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$161
(Vliegwinkel)

One-way from

$89
(Hawaiian Airlines)

Popular in

December

Cheapest in

October

Average price

$267
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. 13% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Vliegwinkel deal was found by Cheapflights users on 6/9. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/124:00 pmONT - GEG
1 stop5h 09mHawaiian Airlines
Wed 7/169:45 amGEG - ONT
1 stop5h 01mHawaiian Airlines
Deal found 6/9$161
This Kissandfly.com deal was found by Cheapflights users on 6/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/124:00 pmONT - GEG
1 stop5h 09mMultiple Airlines
Wed 7/166:07 pmGEG - ONT
1 stop6h 06mMultiple Airlines
Deal found 6/9$171
This Kissandfly.com deal was found by Cheapflights users on 6/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/124:00 pmONT - GEG
1 stop6h 56mAlaska Airlines
Wed 7/166:07 pmGEG - ONT
1 stop6h 06mAlaska Airlines
Deal found 6/9$173
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.
Fri 7/255:59 pmONT - GEG
1 stop4h 49mDelta
Tue 7/296:13 amGEG - ONT
1 stop7h 21mDelta
Deal found 6/10$179
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/102:15 pmONT - GEG
2 stops10h 15mSouthwest
Thu 7/172:40 pmGEG - ONT
1 stop6h 30mSouthwest
Deal found 6/10$190
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:00 amONT - BOI
1 stop8h 00mAlaska Airlines
Thu 9/185:45 pmBOI - ONT
1 stop7h 14mAlaska Airlines
Deal found 6/10$227
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/261:15 pmONT - BOI
1 stop8h 06mUnited Airlines
Wed 8/277:45 amBOI - ONT
1 stop5h 28mUnited Airlines
Deal found 6/11$228
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.
Sat 7/53:05 pmONT - BOI
1 stop7h 54mDelta
Wed 7/95:45 amBOI - ONT
1 stop4h 02mDelta
Deal found 6/10$229
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:55 pmONT - BOI
2 stops7h 30mSouthwest
Mon 9/295:45 amBOI - ONT
1 stop3h 30mSouthwest
Deal found 6/11$234
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:10 amONT - BOI
1 stop6h 03mAmerican Airlines
Mon 9/85:22 pmBOI - ONT
1 stop19h 34mAmerican Airlines
Deal found 6/10$249
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:00 amONT - IDA
1 stop8h 23mAlaska Airlines
Sat 8/236:13 amIDA - ONT
1 stop5h 31mAlaska Airlines
Deal found 6/11$267
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.
Sat 10/256:00 amONT - JAC
1 stop3h 49mDelta
Tue 10/2811:30 amJAC - ONT
1 stop5h 44mDelta
Deal found 6/11$267

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 12, 2025.
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

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Sat 7/12

4:00 pm-9:09 pm

1 stop5h 09m

Spokane

Wed 7/16

9:45 am-2:46 pm

1 stop5h 01m

$161

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Sat 7/12

4:00 pm-9:09 pm

1 stop5h 09m

Spokane

Wed 7/16

6:07 pm-12:13 am

1 stop6h 06m

$171

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Sat 7/12

4:00 pm-10:56 pm

1 stop6h 56m

Spokane

Wed 7/16

6:07 pm-12:13 am

1 stop6h 06m

$173

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Fri 7/25

5:59 pm-10:48 pm

1 stop4h 49m

Spokane

Mon 7/28

5:35 pm-10:47 pm

1 stop5h 12m

$179

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Thu 7/10

2:15 pm-12:30 am

2 stops10h 15m

Spokane

Thu 7/17

2:40 pm-9:10 pm

1 stop6h 30m

$190

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 8/26

1:15 pm-10:21 pm

1 stop8h 06m

Boise Air Term. Gowen Fld

Wed 8/27

7:45 am-12:13 pm

1 stop5h 28m

$228

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 7/5

3:05 pm-11:59 pm

1 stop7h 54m

Boise Air Term. Gowen Fld

Wed 7/9

5:45 am-8:47 am

1 stop4h 02m

$229

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 8/13

6:00 am-12:20 pm

1 stop5h 20m

Boise Air Term. Gowen Fld

Mon 8/18

8:25 pm-11:59 pm

1 stop4h 34m

$232

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 8/26

2:10 pm-10:10 pm

2 stops7h 00m

Boise Air Term. Gowen Fld

Wed 8/27

4:05 pm-10:05 pm

1 stop7h 00m

$238

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 9/5

6:10 am-1:13 pm

1 stop6h 03m

Boise Air Term. Gowen Fld

Mon 9/8

5:22 pm-11:56 am

1 stop19h 34m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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, October is the cheapest month in which you can book a flight from Ontario to Idaho (average of $314). Flying from Ontario to Idaho in June is currently the most expensive (average of $395). 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.

What is the cheapest time of day to fly from ONT to ID?

Find hourly flight availability from Ontario to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Idaho as you normally would.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Ontario to Idaho, such as Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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 Hawaiian Airlines ($89), Delta ($90), and Alaska Airlines ($99).

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

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

  • 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, October is the cheapest month in which you can book a flight from Ontario to Idaho (average of $314). Flying from Ontario to Idaho in June is currently the most expensive (average of $395). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$286FlexibilityNo cancel feeOn-time75%
DeltaCheapest$181Average$437FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$218Average$516FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$233Average$372FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$240Average$345FlexibilityNo cancel feeOn-time63%

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