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$111+ Cheap flights from Idaho to Ontario (ONT)

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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ONT
Nov 19 — Nov 261
1 adult
Tue 11/19
Tue 11/26
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Cheap flight deals from Idaho to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to Ontario (ONT). 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 14, 2024.

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 November 14, 2024.

This Delta deal was found by Cheapflights users on 11/14. 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 12/125:36 amBOI - ONT
1 stop5h 59mDelta
Sat 12/141:50 pmONT - BOI
1 stop6h 29mDelta
Deal found 11/14$231
This Delta deal was found by Cheapflights users on 11/13. 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 12/47:11 pmGEG - ONT
1 stop4h 42mDelta
Wed 12/115:50 amONT - GEG
1 stop8h 10mDelta
Deal found 11/13$238
This Delta deal was found by Cheapflights users on 11/14. 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 12/126:50 amJAC - ONT
1 stop6h 35mDelta
Sun 12/151:25 pmONT - JAC
1 stop6h 46mDelta
Deal found 11/14$254
This Alaska Airlines deal was found by Cheapflights users on 11/13. 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 12/101:28 pmGEG - ONT
1 stop6h 32mAlaska Airlines
Tue 12/171:53 pmONT - GEG
1 stop7h 01mAlaska Airlines
Deal found 11/13$267
This Alaska Airlines deal was found by Cheapflights users on 11/13. 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 12/122:47 pmBOI - ONT
1 stop10h 12mAlaska Airlines
Mon 12/168:55 pmONT - BOI
1 stop24h 23mAlaska Airlines
Deal found 11/13$287
This United Airlines deal was found by Cheapflights users on 11/14. 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 12/135:30 amLWS - ONT
1 stop7h 10mUnited Airlines
Thu 12/191:42 pmONT - LWS
1 stop8h 48mUnited Airlines
Deal found 11/14$308
This United Airlines deal was found by Cheapflights users on 11/14. 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.
Sat 12/76:53 pmBOI - ONT
1 stop6h 05mUnited Airlines
Mon 12/910:35 amONT - BOI
1 stop4h 37mUnited Airlines
Deal found 11/14$339
This Southwest deal was found by Cheapflights users on 11/13. 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.
Fri 12/204:05 pmBOI - ONT
1 stop7h 55mSouthwest
Fri 1/34:55 pmONT - BOI
1 stop5h 55mSouthwest
Deal found 11/13$346
This American Airlines deal was found by Cheapflights users on 11/12. 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.
Sat 11/233:16 pmGEG - ONT
1 stop6h 46mAmerican Airlines
Mon 12/307:30 pmONT - GEG
1 stop18h 23mAmerican Airlines
Deal found 11/12$360
This United Airlines deal was found by Cheapflights users on 11/13. 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 12/61:50 pmGEG - ONT
1 stop6h 57mUnited Airlines
Mon 12/95:05 amONT - GEG
1 stop7h 42mUnited Airlines
Deal found 11/13$377
This United Airlines deal was found by Cheapflights users on 11/14. 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 12/134:25 pmJAC - ONT
1 stop5h 22mUnited Airlines
Mon 12/161:40 pmONT - JAC
1 stop6h 39mUnited Airlines
Deal found 11/14$399
This Southwest deal was found by Cheapflights users on 11/14. 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 12/31:30 pmGEG - ONT
2 stops7h 55mSouthwest
Mon 12/96:15 amONT - GEG
1 stop8h 15mSouthwest
Deal found 11/14$401

Find flights from Idaho to Ontario within your budget

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 2,752,363 searches. Data last updated November 14, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Mon 1/27

9:30 am-3:11 pm

1 stop6h 41m

Ontario

Wed 1/29

6:00 am-10:23 pm

1 stop15h 23m

$230

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 12/12

5:36 am-10:35 am

1 stop5h 59m

Ontario

Sat 12/14

1:50 pm-9:19 pm

1 stop6h 29m

$231

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Wed 12/4

7:11 pm-11:53 pm

1 stop4h 42m

Ontario

Wed 12/11

5:50 am-2:00 pm

1 stop8h 10m

$238

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Wed 1/8

1:30 pm-8:45 pm

2 stops7h 15m

Ontario

Wed 1/15

1:40 pm-10:05 pm

1 stop8h 25m

$243

JacksonOntario

JAC - ONT

JACONT

Jackson Hole

Thu 12/12

6:50 am-12:25 pm

1 stop6h 35m

Ontario

Sun 12/15

1:25 pm-9:11 pm

1 stop6h 46m

$254

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Thu 1/9

6:57 pm-11:53 pm

1 stop5h 56m

Ontario

Wed 1/15

5:10 pm-10:44 pm

1 stop4h 34m

$255

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Wed 1/8

6:00 am-10:34 am

1 stop4h 34m

Ontario

Wed 1/8

5:44 pm-11:07 pm

1 stop5h 23m

$260

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 2/1

8:00 am-5:04 pm

2 stops10h 04m

Ontario

Thu 2/6

4:06 pm-10:33 pm

1 stop5h 27m

$273

LewistonOntario

LWS - ONT

LWSONT

Lewiston Nez Perce Rgnl

Fri 12/13

5:30 am-12:40 pm

1 stop7h 10m

Ontario

Thu 12/19

1:42 pm-10:30 pm

1 stop8h 48m

$308

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 12/7

6:53 pm-11:58 pm

1 stop6h 05m

Ontario

Mon 12/9

10:35 am-4:12 pm

1 stop4h 37m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/14

Showing 1-10 of 33 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.

Travel insights for flights from Idaho to Ontario

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

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

Currently, September is the cheapest month in which you can book a flight from Idaho to Ontario (average of $236). Flying from Idaho to Ontario in December is currently the most expensive (average of $298). 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 ID to ONT?

Find hourly flight availability from Idaho to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 14, 2024.

When flying from Idaho to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 November 14, 2024.
Peruse reviews from past customers who have flown with American Airlines, Delta and United Airlines from Idaho to Ontario to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
5,045 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,439 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,788 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,194 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.3

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

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 airport do you fly into for flights to Ontario from Idaho?

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

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $116. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Idaho to Ontario for a low price.

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

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

  • 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 Ontario?

    Currently, September is the cheapest month in which you can book a flight from Idaho to Ontario (average of $236). Flying from Idaho to Ontario in December is currently the most expensive (average of $298). 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 Idaho to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Idaho to Ontario

Discover the top 7 airlines that operate flights from Idaho to Ontario. 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 2,752,363 searches. Data last updated November 14, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$95Average$186FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$128Average$136FlexibilityNo cancel feeOn-time88%
DeltaCheapest$132Average$409FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$201Average$326FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$227Average$351FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$233Average$353FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$240Average$330FlexibilityNo cancel feeOn-time63%
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