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Find cheap flights from Ontario to Idaho Falls from $209

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Idaho Falls departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Tue 6/11
Tue 6/18

Search hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Idaho Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Idaho Falls, as well as popular online travel agencies
In the last 7 days travelers have searched 42,369,914 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Cheap flight deals from Ontario to Idaho Falls (ONT-IDA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
1:25 pm - 6:32 pmONT-IDA
4h 07m1 stop
7:00 pm - 11:42 pmIDA-ONT
5h 42m1 stop
$348Delta
Find Deal
Sat, Jun 22 - Sun, Jun 23
5:35 am - 12:22 pmONT-IDA
5h 47m1 stop
7:00 pm - 11:42 pmIDA-ONT
5h 42m1 stop
$367Delta
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Sat, Jun 15 - Tue, Jun 18
6:53 am - 6:16 pmONT-IDA
10h 23m2 stops
6:59 pm - 11:59 pmIDA-ONT
6h 00m1 stop
$408Delta
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Wed, Jul 17 - Mon, Jul 22
6:00 am - 11:57 pmONT-IDA
16h 57m1 stop
4:02 pm - 9:05 amIDA-ONT
18h 03m1 stop
$502Alaska Airlines
Find Deal
Mon, Jun 10 - Mon, Jun 17
6:25 pm - 9:08 pmONT-IDA
25h 43m1 stop
5:58 pm - 12:15 pmIDA-ONT
19h 17m2 stops
$519United Airlines
Find Deal
Wed, Jun 26 - Tue, Jul 9
8:09 pm - 11:57 pmONT-IDA
26h 48m1 stop
6:00 am - 7:14 pmIDA-ONT
14h 14m1 stop
$522Alaska Airlines
Find Deal
Sun, Jun 9 - Wed, Jun 12
6:25 pm - 9:08 pmONT-IDA
25h 43m1 stop
5:58 pm - 12:33 pmIDA-ONT
19h 35m1 stop
$534United Airlines
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Fri, Jul 26 - Mon, Jul 29
5:20 am - 9:08 pmONT-IDA
14h 48m1 stop
5:58 pm - 12:15 pmIDA-ONT
19h 17m2 stops
$539United Airlines
Find Deal
Fri, Jul 26 - Mon, Jul 29
10:54 am - 9:43 pmONT-IDA
9h 49m1 stop
6:32 am - 6:37 pmIDA-ONT
13h 05m2 stops
$581American Airlines
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Mon, Jun 10 - Mon, Jun 17
10:54 am - 9:43 pmONT-IDA
9h 49m1 stop
6:32 am - 6:37 pmIDA-ONT
13h 05m2 stops
$656American Airlines
Find Deal
Thu, Jun 27 - Sun, Jun 30

Flights from Ontario to Idaho Falls - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Idaho Falls?

The average price of all flights from Ontario to Idaho Falls clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Idaho Falls on a Tuesday and more expensive on a Monday. On your return trip to Ontario, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

What is the cheapest month to fly from Ontario to Idaho Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to Idaho Falls is August, where tickets cost $341 on average. On the other hand, the most expensive months are July and September, where the average cost of tickets is $576 and $536 respectively.

How far in advance should I book a flight from Ontario to Idaho Falls?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Idaho Falls, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 39 days before departure.

Which airlines provide the cheapest flights from Ontario to Idaho Falls?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, United Airlines offered the best one-way deal for that route, at $209. KAYAK users also found Ontario to Idaho Falls round-trip flights on Delta from $348 and on Alaska Airlines from $502.

Good to know

Low season

January

High season

May

Cheapest flight

$209
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Ontario to Idaho Falls

When to book flights from Ontario to Idaho Falls

Are your dates flexible? Find out the best times to travel from Ontario to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Idaho Falls

  • What is the cheapest flight from Ontario to Idaho Falls?

    In the last 3 days, the lowest price for a flight from Ontario to Idaho Falls was $209 for a one-way ticket and $348 for a round-trip.

  • Do I need a passport to fly between Ontario and Idaho Falls?

    No

  • Which aircraft models fly most regularly from Ontario to Idaho Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Idaho Falls?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Ontario and Idaho Falls, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Idaho Falls, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Idaho Falls are Delta and American Airlines. With an average price for the route of $667 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $663 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Ontario to Idaho Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Idaho Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Idaho Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Idaho Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Ontario with another airline. Booking your flights between Ontario and IDA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Idaho Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Ontario to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10745 reviews
7.4Food
7.9Comfort
8.0Entertainment
8.6Crew
8.2Boarding
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

I guess they don’t serve drinks on planes anymore

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

Flight From PHX to CVG was on time, very professional staff

Book cheap flights from Ontario to Idaho Falls

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Idaho Falls found on KAYAK in the last 72 hours.
8/25Sun
1 stopUnited Airlines
6h 48mONT-IDA
$209
6/25Tue
1 stopAlaska Airlines
26h 37mONT-IDA
$247
8/25Sun
2 stopsAlaska Airlines
15h 54mONT-IDA
$262
7/3Wed
1 stopUnited Airlines
18h 03mONT-IDA
$263
6/25Tue
2 stopsAlaska Airlines
15h 57mONT-IDA
$337
7/3Wed
2 stopsAlaska Airlines
27h 02mONT-IDA
$410

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Last minute flights from Ontario to Idaho Falls

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Idaho Falls that are departing in the next 10 days.
5/16Thu
multi-stopUnited Airlines
7h 19mONT-IDA
5/25Sat
multi-stopUnited Airlines
6h 23mIDA-ONT
$614
5/16Thu
multi-stopUnited Airlines
6h 31mONT-IDA
5/25Sat
multi-stopUnited Airlines
12h 42mIDA-ONT
$733

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Ontario - Idaho Falls Flights

Departure:

Ontario (undefined)United States

Destination:

Idaho Falls (IDA)United States

Return flight deals:

Idaho Falls - Ontario

Cabin classes: