ONT - IDA

$190 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 5/18. 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

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
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Cheap Flights from Ontario to Idaho Falls

 
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.

Recent round-trip flight deals from Ontario to Idaho Falls

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Idaho Falls.
Discover the best prices for you by selecting your travel dates on KAYAK.
Alaska Airlines Logo
11:51 am - 10:34 pmONT-IDA
9h 43m1 stop
Alaska Airlines Logo
4:20 pm - 10:46 pmIDA-ONT
7h 26m1 stop
$264Alaska Airlines
Find Deal
Sat, May 24 - Sat, May 31
Alaska Airlines Logo
6:00 am - 10:34 pmONT-IDA
15h 34m1 stop
Alaska Airlines Logo
6:00 am - 10:57 amIDA-ONT
5h 57m1 stop
$283Alaska Airlines
Find Deal
Tue, Jun 3 - Wed, Jun 4
Delta Logo
6:00 am - 11:50 amONT-IDA
4h 50m1 stop
Delta Logo
6:50 pm - 11:42 pmIDA-ONT
5h 52m1 stop
$285Delta
Find Deal
Tue, Jun 3 - Tue, Jun 3
Delta Logo
11:44 am - 10:51 pmONT-IDA
10h 07m2 stops
Delta Logo
6:00 am - 8:52 amIDA-ONT
3h 52m1 stop
$290Delta
Find Deal
Tue, Jun 3 - Tue, Jun 10
Hawaiian Airlines Logo
4:29 pm - 10:36 pmONT-IDA
5h 07m1 stop
Hawaiian Airlines Logo
4:20 pm - 10:46 pmIDA-ONT
7h 26m1 stop
$327Hawaiian Airlines
Find Deal
Tue, May 13 - Tue, May 20
Hawaiian Airlines Logo
3:00 pm - 10:39 pmONT-IDA
6h 39m1 stop
Hawaiian Airlines Logo
6:13 am - 10:45 amIDA-ONT
5h 32m1 stop
$388Hawaiian Airlines
Find Deal
Sat, Sep 6 - Tue, Sep 9
United Airlines Logo
5:05 am - 1:32 pmONT-IDA
7h 27m1 stop
United Airlines Logo
4:13 pm - 8:54 pmIDA-ONT
5h 41m1 stop
$399United Airlines
Find Deal
Fri, Jul 25 - Tue, Jul 29
United Airlines Logo
5:05 am - 1:29 pmONT-IDA
7h 24m1 stop
United Airlines Logo
7:00 am - 12:38 pmIDA-ONT
6h 38m1 stop
$441United Airlines
Find Deal
Wed, May 14 - Sun, May 18
American Airlines Logo
10:51 am - 9:17 pmONT-IDA
9h 26m1 stop
American Airlines Logo
1:02 pm - 9:57 pmIDA-ONT
9h 55m2 stops
$466American Airlines
Find Deal
Sat, May 17 - Mon, May 19
American Airlines Logo
12:41 pm - 9:17 pmONT-IDA
7h 36m1 stop
American Airlines Logo
7:00 am - 6:23 pmIDA-ONT
12h 23m2 stops
$477American Airlines
Find Deal
Wed, May 14 - Sun, May 18
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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.

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
High seasonOctober
Cheapest flight$190
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly and prices are also 34% 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 $190 for a one-way ticket and $264 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?

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

  • 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.

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.
8.0
DeltaOverall score based on 7936 reviews
7.3Food
8.2Boarding
8.5Crew
7.9Comfort
7.9Entertainment
Airline reviews

Delta flight was on time, seats were comfortable, and crew was nice.

8.0 ExcellentAnonymous, Apr 2025LAX - DEN
Read more Delta reviews

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

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

Information on your arrival and departure airports

Idaho Falls (IDA)
Ontario (ONT)

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