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Idaho Falls

$123+ 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IDA
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
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 enero 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/21. 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.
jue. 2/58:48 pm
ONT
-
IDA
1 stop16h 31m
Multiple Airlines
lun. 2/99:20 pm
IDA
-
ONT
1 stop17h 32m
Multiple Airlines
Deal found 1/21$196
This United Airlines deal was found by Cheapflights users on 1/20. 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.
sáb. 4/255:10 am
ONT
-
IDA
1 stop7h 14m
United Airlines
sáb. 5/22:31 pm
IDA
-
ONT
1 stop7h 05m
United Airlines
Deal found 1/20$244
This American Airlines deal was found by Cheapflights users on 1/20. 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.
mié. 2/255:02 pm
ONT
-
IDA
1 stop5h 22m
American Airlines
vie. 2/276:03 am
IDA
-
ONT
1 stop6h 25m
American Airlines
Deal found 1/20$266
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/134:02 pm
ONT
-
IDA
1 stop6h 34m
Alaska Airlines
mar. 3/175:20 pm
IDA
-
ONT
1 stop6h 24m
Alaska Airlines
Deal found 1/20$294
This Orbitz deal was found by Cheapflights users on 1/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/303:26 pm
ONT
-
IDA
1 stop6h 14m
Alaska Airlines
dom. 5/34:08 pm
IDA
-
ONT
1 stop18h 37m
Alaska Airlines
Deal found 1/21$295
This Expedia deal was found by Cheapflights users on 1/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/254:02 pm
ONT
-
IDA
1 stop6h 34m
Alaska Airlines
vie. 2/275:20 pm
IDA
-
ONT
2 stops26h 37m
Alaska Airlines
Deal found 1/20$296
This Delta deal was found by Cheapflights users on 1/20. 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.
mar. 2/105:10 pm
ONT
-
IDA
1 stop4h 47m
Delta
vie. 2/206:35 pm
IDA
-
ONT
1 stop6h 14m
Delta
Deal found 1/20$311
This Delta deal was found by Cheapflights users on 1/21. 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.
mié. 6/35:05 pm
ONT
-
IDA
1 stop4h 09m
Delta
mié. 6/1011:20 am
IDA
-
ONT
1 stop5h 54m
Delta
Deal found 1/21$321
This Trip.com deal was found by Cheapflights users on 1/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/138:07 am
ONT
-
IDA
1 stop6h 24m
Multiple Airlines
lun. 2/1610:31 pm
IDA
-
ONT
1 stop15h 40m
Multiple Airlines
Deal found 1/20$327
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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. 6/27:00 am
ONT
-
IDA
1 stop5h 06m
Alaska Airlines
jue. 6/116:00 am
IDA
-
ONT
1 stop7h 53m
Alaska Airlines
Deal found 1/21$335

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 enero 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$196
(Kiwi.com)

One-way from

$123
(Alaska Airlines)

Popular in

March

Cheapest in

July

Average price

$220
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
Highest demand for flights based on searches. 26% potential increase in price ($155 potential increase over avg. RT price).
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 January 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 enero 21, 2026.
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

sáb. 4/25

5:10 am-1:24 pm

1 stop7h 14m

Idaho Falls Fanning Field

sáb. 5/2

2:31 pm-8:36 pm

1 stop7h 05m

$244

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

vie. 3/13

4:02 pm-11:36 pm

1 stop6h 34m

Idaho Falls Fanning Field

mar. 3/17

5:20 pm-10:44 pm

1 stop6h 24m

$294

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

jue. 4/30

3:26 pm-10:40 pm

1 stop6h 14m

Idaho Falls Fanning Field

dom. 5/3

4:08 pm-9:45 am

1 stop18h 37m

$295

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 2/10

5:10 pm-10:57 pm

1 stop4h 47m

Idaho Falls Fanning Field

vie. 2/20

6:35 pm-11:49 pm

1 stop6h 14m

$311

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mié. 6/3

5:05 pm-10:14 pm

1 stop4h 09m

Idaho Falls Fanning Field

mié. 6/10

11:20 am-4:14 pm

1 stop5h 54m

$321

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 6/2

7:00 am-1:06 pm

1 stop5h 06m

Idaho Falls Fanning Field

jue. 6/11

6:00 am-12:53 pm

1 stop7h 53m

$335

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

sáb. 4/25

7:30 am-6:17 pm

2 stops9h 47m

Idaho Falls Fanning Field

sáb. 5/2

6:57 pm-10:43 pm

1 stop4h 46m

$355

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

jue. 2/12

1:10 pm-5:49 pm

1 stop3h 39m

Idaho Falls Fanning Field

vie. 2/20

6:35 pm-11:49 pm

1 stop6h 14m

$377

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 6/30

5:05 pm-10:14 pm

1 stop4h 09m

Idaho Falls Fanning Field

sáb. 7/4

6:50 pm-9:44 pm

1 stop3h 54m

$377

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 2/10

4:03 pm-10:59 pm

1 stop5h 56m

$123

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 19 results
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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Expedia the most. Expedia 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, November is the cheapest month in which you can book a flight from Ontario to Idaho Falls (average of $60). Flying from Ontario to Idaho Falls in December is currently the most expensive (average of $228). 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.

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 enero 21, 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
7.9
Good
8,088 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

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
7.9
Good
8,088 reviews
Delta
7.9
Good
8,088 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

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?

    United Airlines, Alaska Airlines, and Delta can get you from Ontario to Idaho Falls in just under 4h 47m. Your travel time can differ by up to 2h 27m. There are 717 mi between Ontario and Idaho Falls. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 49% 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, November is the cheapest month in which you can book a flight from Ontario to Idaho Falls (average of $60). Flying from Ontario to Idaho Falls in December is currently the most expensive (average of $228). 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 enero 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$219Average$399FlexibilityNo cancel feeOn-timeN/A

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