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Idaho Falls

$113+ Cheap flights from Ontario to Idaho Falls (ONT - IDA)

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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IDA
nov. 9 — nov. 161
dom. 11/9
dom. 11/16
1 adult, Economy
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Cheap flight deals from Ontario to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Idaho Falls (IDA). 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 octubre 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(Kiwi.com)

One-way from

$113
(Kiwi.com)

Popular in

March

Cheapest in

July

Average price

$285
Provider with most accurate pricing for Ontario-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for Ontario-Idaho Falls Fanning Field flights.
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From Ontario to Idaho Falls Fanning Field
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One-way flight from Ontario to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 28% potential increase in price ($169 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Idaho Falls

Cheapest flights from Ontario to Idaho Falls
Explore the most affordable flight options available from Ontario to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/146:00 amONT - IDA
1 stop9h 08mMultiple Airlines
lun. 11/177:56 pmIDA - ONT
1 stop25h 46mMultiple Airlines
Deal found 10/7$271
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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.
mar. 11/411:59 amONT - IDA
1 stop26h 14mAlaska Airlines
mar. 11/116:05 amIDA - ONT
1 stop6h 00mAlaska Airlines
Deal found 10/6$304
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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. 10/294:11 pmONT - IDA
1 stop6h 48mAlaska Airlines
dom. 11/25:05 amIDA - ONT
1 stop6h 00mAlaska Airlines
Deal found 10/6$305
This Alaska Airlines deal was found by Cheapflights users on 10/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/286:00 amONT - IDA
1 stop8h 13mAlaska Airlines
dom. 11/25:05 amIDA - ONT
1 stop6h 00mAlaska Airlines
Deal found 10/9$356
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/231:31 pmONT - IDA
1 stop8h 07mAlaska Airlines
lun. 10/273:50 pmIDA - ONT
1 stop6h 03mAlaska Airlines
Deal found 10/8$360
This Cheapflightsfares deal was found by Cheapflights users on 10/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/37:10 amONT - IDA
2 stops8h 17mAlaska Airlines
lun. 12/86:05 amIDA - ONT
1 stop6h 14mAlaska Airlines
Deal found 10/7$364
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/266:30 amONT - IDA
1 stop8h 33mMultiple Airlines
dom. 11/3010:53 pmIDA - ONT
1 stop16h 33mMultiple Airlines
Deal found 10/7$367
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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.
vie. 11/76:11 pmONT - IDA
1 stop20h 02mAlaska Airlines
mié. 11/123:50 pmIDA - ONT
1 stop6h 03mAlaska Airlines
Deal found 10/7$380

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Idaho Falls 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 octubre 10, 2025.
Use the filters below to find and compare flights from Ontario to Idaho Falls that are best for you.

Fly from

Ontario

Fly to

Idaho Falls

Route

Depart

Return

Price

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mié. 10/29

4:11 pm-11:59 pm

1 stop6h 48m

Idaho Falls Fanning Field

dom. 11/2

5:05 am-10:05 am

1 stop6h 00m

$305

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

vie. 11/14

6:00 am-4:08 pm

1 stop9h 08m

Idaho Falls Fanning Field

lun. 11/17

1:57 pm-9:57 pm

2 stops9h 00m

$308

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 11/4

10:59 am-11:59 pm

2 stops12h 00m

Idaho Falls Fanning Field

mar. 11/11

6:05 am-11:05 am

1 stop6h 00m

$353

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 10/28

4:11 pm-11:59 pm

1 stop6h 48m

Idaho Falls Fanning Field

dom. 11/2

5:05 am-10:05 am

1 stop6h 00m

$356

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

jue. 10/23

1:31 pm-10:38 pm

1 stop8h 07m

Idaho Falls Fanning Field

lun. 10/27

3:50 pm-8:53 pm

1 stop6h 03m

$360

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

vie. 11/7

6:11 pm-3:13 pm

1 stop20h 02m

Idaho Falls Fanning Field

mié. 11/12

3:50 pm-8:53 pm

1 stop6h 03m

$380

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mié. 12/3

7:10 am-4:27 pm

2 stops8h 17m

Idaho Falls Fanning Field

lun. 12/8

6:05 am-12:46 pm

2 stops7h 41m

$431

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

vie. 12/19

4:36 pm-12:07 am

1 stop6h 31m

Idaho Falls Fanning Field

lun. 12/22

6:00 am-11:59 pm

2 stops18h 59m

$456

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mié. 10/22

1:31 pm-10:38 pm

1 stop8h 07m

Idaho Falls Fanning Field

dom. 10/26

6:05 am-11:05 am

1 stop6h 00m

$465

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

dom. 11/2

10:43 pm-2:01 pm

1 stop14h 18m

$113

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/7

Showing 1-10 of 17 results
1
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Compare providers for flights from Ontario to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Idaho Falls in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Idaho Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls 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 Falls

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

Currently, March is the cheapest month in which you can book a flight from Ontario to Idaho Falls (average of $99). Flying from Ontario to Idaho Falls in December is currently the most expensive (average of $262). 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 IDA?

Find hourly flight availability from Ontario to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 10, 2025.

When flying from Ontario to Idaho Falls, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 20% versus a flight in the evening.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Falls. Reviews last updated octubre 10, 2025.
Read reviews from past customers who have flown Delta from Ontario to Idaho Falls. 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.
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
8.0
Very good
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from Ontario to Idaho Falls. 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 Ontario to Idaho Falls?

    Alaska Airlines can get you from Ontario to Idaho Falls in just under 6h 48m. Your travel time can differ by up to . There are 717 mi between Ontario and Idaho Falls.

  • What is the cheapest airline to fly from Ontario to Idaho Falls round-trip?

    Cheapflights users have booked flights from Ontario to Idaho Falls round-trip from $219. You may be able to fly from Ontario to Idaho Falls for 48% less than the average price by searching for this airline.

  • Can I find deals for flights from Ontario to Idaho Falls that include hotel bookings?

    Yes. In addition to deals on Ontario to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Idaho Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Idaho Falls.

  • Can I find deals for business class flights from Ontario to Idaho Falls?

    Yes. Cheapflights offers flight deals from Ontario to Idaho Falls 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 Falls?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Idaho Falls (average of $99). Flying from Ontario to Idaho Falls in December is currently the most expensive (average of $262). 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top airline flying from Ontario to Idaho Falls

Discover the top airline that operate flights from Ontario to Idaho Falls. 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 octubre 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$219Average$399FlexibilityNo cancel feeOn-timeN/A

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