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Idaho Falls

$212+ 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 12/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IDA
Aug 12 — Aug 191
Wed 8/12
Wed 8/19
1 adult, Economy
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Cheap 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 July 13, 2026.

This Alaska Airlines deal was found by Cheapflights users on 7/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:15 am
ONT
-
IDA
1 stop5h 01m
Alaska Airlines
Wed 11/181:53 pm
IDA
-
ONT
1 stop5h 35m
Alaska Airlines
Deal found 7/12$415
This Gotogate deal was found by Cheapflights users on 7/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:32 pm
ONT
-
IDA
1 stop18h 34m
Alaska Airlines
Sat 8/223:57 pm
IDA
-
ONT
1 stop5h 27m
Alaska Airlines
Deal found 7/11$419
This Booking.com deal was found by Cheapflights users on 7/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:05 pm
ONT
-
IDA
1 stop18h 19m
Alaska Airlines
Sat 9/123:57 pm
IDA
-
ONT
1 stop18h 54m
Alaska Airlines
Deal found 7/9$455
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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.
Sat 8/87:00 am
ONT
-
IDA
1 stop5h 06m
Alaska Airlines
Fri 8/141:43 pm
IDA
-
ONT
1 stop7h 47m
Alaska Airlines
Deal found 7/9$459
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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.
Tue 8/47:00 am
ONT
-
IDA
1 stop5h 06m
Alaska Airlines
Tue 8/117:15 am
IDA
-
ONT
1 stop6h 54m
Alaska Airlines
Deal found 7/11$466
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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 8/57:00 am
ONT
-
IDA
1 stop5h 06m
Alaska Airlines
Tue 8/117:15 am
IDA
-
ONT
1 stop6h 54m
Alaska Airlines
Deal found 7/11$477
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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.
Fri 8/77:00 am
ONT
-
IDA
1 stop5h 06m
Alaska Airlines
Tue 8/117:15 am
IDA
-
ONT
1 stop6h 54m
Alaska Airlines
Deal found 7/11$479
This Booking.com deal was found by Cheapflights users on 7/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/214:27 pm
ONT
-
IDA
2 stops19h 57m
Alaska Airlines
Tue 8/253:57 pm
IDA
-
ONT
1 stop5h 27m
Alaska Airlines
Deal found 7/13$488

Find 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 July 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$415
(Gotogate)

One-way from

$212
(Delta)

Popular in

October

Cheapest in

September

Average price

$578
Provider with most accurate pricing for Ontario-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Idaho Falls Fanning Field flights.
Search Deals
From Ontario to Idaho Falls Fanning Field
Search Deals
One-way flight from Ontario to Idaho Falls Fanning Field
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 13, 2026.
Use the filters below to find and compare flights from Ontario to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 11/14

7:15 am-1:16 pm

1 stop5h 01m

Idaho Falls Fanning Field

Wed 11/18

1:53 pm-6:28 pm

1 stop5h 35m

$415

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Fri 8/21

4:27 pm-1:24 pm

2 stops19h 57m

Idaho Falls Fanning Field

Sat 8/22

3:57 pm-8:24 pm

1 stop5h 27m

$488

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Fri 9/4

7:59 pm-10:56 pm

1 stop25h 57m

Idaho Falls Fanning Field

Tue 9/8

6:18 am-11:16 am

1 stop5h 58m

$502
Cheapest one-way
Quickest one-way

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 12/26

5:05 pm-10:19 pm

1 stop4h 14m

$212

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Mon 8/24

6:02 am-3:20 pm

1 stop8h 18m

$248

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Wed 7/22

5:00 am-1:25 pm

1 stop7h 25m

$255

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Fri 7/24

5:00 am-1:25 pm

1 stop7h 25m

$302

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Mon 7/20

9:20 pm-3:37 pm

1 stop17h 17m

$307

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Wed 7/22

6:00 am-8:55 am

2 stops25h 55m

$377

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 8/29

5:05 pm-10:32 pm

1 stop4h 27m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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

How much does it cost to fly round-trip from Ontario to Idaho Falls?

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 July 13, 2026.
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
7.8
Good
8,463 reviews

Crew

8.5

Food

7.2

Overall

7.8

Entertainment

7.8

Boarding

8.1

Comfort

7.8

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
7.8
Good
8,463 reviews
Delta
7.8
Good
8,463 reviews

Crew

8.5

Food

7.2

Overall

7.8

Entertainment

7.8

Boarding

8.1

Comfort

7.8

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 5h 01m. 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 $180. You may be able to fly from Ontario to Idaho Falls for 57% 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.

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 July 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$180Average$393FlexibilityNo cancel feeOn-timeN/A

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