ONT - IDA

$120 Find Cheap Flights from Ontario to Idaho Falls

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 1/15. 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
1 adult, Economy, 0 bags

KAYAK searches 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$236
Typical prices: $337-$607
Alaska Airlines
sam. 1/31sam. 2/7
ONT - IDA • 1 stop
Cheapest one-way
$134
Typical prices: $219-$411
Alaska Airlines
jeu. 1/15
ONT - IDA • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Idaho Falls!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Idaho Falls

sam., janv. 31 - sam., févr. 7
Alaska Airlines Logo
11:53 am - 6:18 pm
ONT
-
IDA
5h 25m1 stop
Alaska Airlines Logo
9:00 am - 3:08 pm
IDA
-
ONT
7h 08m1 stop
$236Alaska Airlines
sam., janv. 31 - sam., févr. 7
Alaska Airlines Logo
11:53 am - 10:59 pm
ONT
-
IDA
10h 06m1 stop
Alaska Airlines Logo
9:00 am - 7:16 pm
IDA
-
ONT
11h 16m2 stops
$273Alaska Airlines
jeu., janv. 22 - lun., janv. 26
Alaska Airlines Logo
11:53 am - 10:59 pm
ONT
-
IDA
10h 06m1 stop
Alaska Airlines Logo
6:58 pm - 3:08 pm
IDA
-
ONT
21h 10m1 stop
$284Alaska Airlines
sam., janv. 31 - sam., févr. 7
Alaska Airlines Logo
7:00 am - 6:18 pm
ONT
-
IDA
10h 18m2 stops
Alaska Airlines Logo
9:00 am - 7:16 pm
IDA
-
ONT
11h 16m2 stops
$311Alaska Airlines
jeu., janv. 22 - lun., janv. 26
Alaska Airlines Logo
4:03 pm - 10:59 pm
ONT
-
IDA
5h 56m1 stop
Alaska Airlines Logo
6:58 pm - 7:16 pm
IDA
-
ONT
25h 18m2 stops
$313Alaska Airlines
jeu., janv. 22 - lun., janv. 26
Alaska Airlines Logo
7:56 pm - 6:18 pm
ONT
-
IDA
45h 22m2 stops
Alaska Airlines Logo
6:58 pm - 7:16 pm
IDA
-
ONT
25h 18m2 stops
$361Alaska Airlines
jeu., janv. 22 - dim., janv. 25
Alaska Airlines Logo
6:00 am - 6:18 pm
ONT
-
IDA
11h 18m1 stop
Alaska Airlines Logo
6:58 pm - 11:56 pm
IDA
-
ONT
5h 58m1 stop
$368Alaska Airlines
jeu., janv. 22 - dim., janv. 25
Alaska Airlines Logo
11:53 am - 10:59 pm
ONT
-
IDA
10h 06m1 stop
Alaska Airlines Logo
9:00 am - 8:10 pm
IDA
-
ONT
12h 10m2 stops
$402Alaska Airlines
lun., juin 15 - lun., juin 22
Alaska Airlines Logo
7:30 am - 2:27 pm
ONT
-
IDA
5h 57m1 stop
Alaska Airlines Logo
6:15 am - 11:09 am
IDA
-
ONT
5h 54m1 stop
$472Alaska Airlines
mar., déc. 30 - dim., janv. 4
United Airlines Logo
5:05 am - 1:30 pm
ONT
-
IDA
7h 25m1 stop
United Airlines Logo
4:05 pm - 9:07 pm
IDA
-
ONT
6h 02m1 stop
$531United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Idaho Falls flights

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.

How much is a round-trip flight from Ontario to Idaho Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Idaho Falls departing in January.

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

The average price of all round-trip flights from Ontario to Idaho Falls clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ontario to Idaho Falls, look for departures on Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Idaho Falls, Friday is the cheapest day to fly and Tuesday is the most expensive.

Find deals

Good to know

Low seasonJuly
Cheapest flight$134
Best time to beat the crowds with an average 52% drop in price.
Most popular time to fly and prices are also 52% lower on average.
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 $120 for a one-way ticket and $236 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?

    SkyTeam is the only airline alliance operating flights between Ontario and Idaho Falls.

  • 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.

Reviews of the top airline 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.
7.9
DeltaOverall score based on 8005 reviews
8.5Crew
7.3Food
8.1Boarding
7.9Comfort
7.9Entertainment
Airline reviews

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

8.0 ExcellentDeborah, Nov 2025
LAX - RDU
Read more Delta reviews

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Having to up charge for a seat assignment is not good. Delta can do better

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

Everything you need to know for your flight from Ontario to Idaho Falls

Information on your arrival and departure airports

Ontario (ONT)
Idaho Falls (IDA)