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$101+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Ontario to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Idaho (USID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

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 November 20, 2024.

This Delta deal was found by Cheapflights users on 11/19. 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.
Wed 12/115:50 amONT - BOI
1 stop6h 30mDelta
Sat 1/119:15 amBOI - ONT
1 stop7h 10mDelta
Deal found 11/19$203
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Sun 12/156:00 amONT - BOI
1 stop4h 35mUnited Airlines
Mon 12/166:53 pmBOI - ONT
1 stop6h 05mUnited Airlines
Deal found 11/19$260
This Delta deal was found by Cheapflights users on 11/20. 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 12/146:00 amONT - GEG
1 stop6h 25mDelta
Wed 12/186:05 amGEG - ONT
1 stop6h 20mDelta
Deal found 11/20$278
This Alaska Airlines deal was found by Cheapflights users on 11/18. 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.
Tue 12/176:00 amONT - BOI
1 stop15h 18mAlaska Airlines
Tue 12/245:00 pmBOI - ONT
1 stop17h 45mAlaska Airlines
Deal found 11/18$289
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/105:05 amONT - JAC
1 stop7h 14mUnited Airlines
Wed 12/114:25 pmJAC - ONT
1 stop5h 22mUnited Airlines
Deal found 11/19$324
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 12/116:00 amONT - GEG
1 stop4h 52mAlaska Airlines
Wed 12/188:24 amGEG - ONT
1 stop4h 34mAlaska Airlines
Deal found 11/19$325
This Delta deal was found by Cheapflights users on 11/19. 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.
Tue 12/105:50 amONT - JAC
2 stops9h 55mDelta
Wed 12/116:50 amJAC - ONT
1 stop6h 35mDelta
Deal found 11/19$335
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/136:00 amONT - SUN
1 stop5h 39mUnited Airlines
Sun 12/157:00 amSUN - ONT
1 stop6h 40mUnited Airlines
Deal found 11/20$340
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Wed 12/181:40 pmONT - LWS
1 stop8h 50mUnited Airlines
Wed 12/255:15 amLWS - ONT
2 stops8h 01mUnited Airlines
Deal found 11/19$343
This Southwest deal was found by Cheapflights users on 11/19. 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.
Sat 12/214:45 pmONT - BOI
1 stop5h 20mSouthwest
Wed 12/251:00 pmBOI - ONT
1 stop6h 55mSouthwest
Deal found 11/19$346
This Delta deal was found by Cheapflights users on 11/20. 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.
Thu 12/56:00 amONT - LWS
1 stop5h 50mDelta
Mon 12/912:34 pmLWS - ONT
2 stops10h 08mDelta
Deal found 11/20$353
This American Airlines deal was found by Cheapflights users on 11/20. 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 12/139:53 amONT - BOI
1 stop5h 59mAmerican Airlines
Sun 12/152:16 pmBOI - ONT
1 stop5h 11mAmerican Airlines
Deal found 11/20$366

Find flights from Ontario to Idaho within your budget

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 1/8

6:00 am-11:43 pm

1 stop17h 43m

Spokane

Tue 1/14

5:48 pm-8:13 pm

1 stop26h 25m

$202

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 2/1

6:00 am-1:45 pm

1 stop6h 45m

Boise Air Term. Gowen Fld

Mon 2/3

2:40 pm-10:49 am

1 stop21h 09m

$202

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 12/11

5:50 am-1:20 pm

1 stop6h 30m

Boise Air Term. Gowen Fld

Sat 1/11

9:15 am-3:25 pm

1 stop7h 10m

$203

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 1/8

6:00 am-10:42 am

1 stop4h 42m

Spokane

Fri 1/10

5:05 pm-11:53 pm

1 stop6h 48m

$235

OntarioHailey

ONT - SUN

ONTSUN

Ontario

Sat 2/22

6:00 am-12:28 pm

1 stop5h 28m

Hailey Sun Valley-Friedman

Tue 2/25

7:30 am-12:26 pm

1 stop5h 56m

$250

OntarioJackson

ONT - JAC

ONTJAC

Ontario

Thu 1/9

6:00 am-12:15 pm

1 stop5h 15m

Jackson Hole

Tue 1/14

7:05 am-12:26 pm

1 stop6h 21m

$254

OntarioJackson

ONT - JAC

ONTJAC

Ontario

Sun 1/12

11:33 am-11:05 am

1 stop22h 32m

Jackson Hole

Fri 1/17

12:39 pm-10:49 am

2 stops23h 10m

$259

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sun 12/15

6:00 am-11:35 am

1 stop4h 35m

Boise Air Term. Gowen Fld

Mon 12/16

6:53 pm-11:58 pm

1 stop6h 05m

$260

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 1/8

1:45 pm-8:53 pm

1 stop7h 08m

Spokane

Tue 1/14

1:50 pm-8:51 pm

1 stop7h 01m

$308

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 1/25

11:14 am-3:27 pm

2 stops27h 13m

Idaho Falls Fanning Field

Mon 1/27

4:04 pm-10:39 pm

1 stop7h 35m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 46 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.

Travel insights for flights from Ontario to Idaho

Get recent, data-driven insights about flights from Ontario to Idaho including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario to Idaho?

Currently, January is the cheapest month in which you can book a flight from Ontario to Idaho (average of $310). Flying from Ontario to Idaho in June is currently the most expensive (average of $436). 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 November 20, 2024.

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 November 20, 2024.
Read through reviews of airlines operating flights from Ontario to Idaho, such as Delta, United Airlines and Southwest. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Food

7.2

Overall

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Food

7.2

Overall

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Food

7.2

Overall

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Food

7.2

Overall

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Food

7.2

Overall

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Food

7.2

Overall

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

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 Alaska Airlines ($119), Delta ($122), and United Airlines ($154).

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

    The most popular flight routes from Ontario to Idaho are Ontario - Boise Air Term. Gowen Fld, Ontario - Spokane 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, January is the cheapest month in which you can book a flight from Ontario to Idaho (average of $310). Flying from Ontario to Idaho in June is currently the most expensive (average of $436). 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 7 airlines flying from Ontario to Idaho

Discover the top 7 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$88Average$154FlexibilityNo cancel feeOn-time65%
Avelo AirlinesCheapest$132Average$132FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$158Average$333FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$218Average$396FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$478FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$238Average$337FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$249Average$386FlexibilityNo cancel feeOn-time69%
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