Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

IDA - ONT

Find cheap flights from Idaho Falls to Ontario from $174

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Ontario departing on 6/6. 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
Mon 6/3
Mon 6/10

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Ontario, 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 Idaho Falls to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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

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

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

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Ontario 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
7:00 pm - 11:43 pmIDA-ONT
5h 43m1 stop
5:45 am - 9:58 pmONT-IDA
15h 13m1 stop
$377Delta
Find Deal
Fri, May 31 - Mon, Jun 3
7:00 pm - 11:43 pmIDA-ONT
5h 43m1 stop
5:35 am - 12:22 pmONT-IDA
5h 47m1 stop
$403Delta
Find Deal
Thu, Jun 6 - Sat, Jun 8
7:00 pm - 11:43 pmIDA-ONT
5h 43m1 stop
6:42 pm - 12:28 pmONT-IDA
16h 46m2 stops
$460Delta
Find Deal
Fri, May 31 - Mon, Jun 3
7:00 pm - 10:03 amIDA-ONT
16h 03m2 stops
5:35 am - 12:22 pmONT-IDA
5h 47m1 stop
$505Delta
Find Deal
Wed, Jun 5 - Sat, Jun 8
6:00 am - 6:15 pmIDA-ONT
13h 15m2 stops
8:09 pm - 2:52 pmONT-IDA
17h 43m1 stop
$512Alaska Airlines
Find Deal
Fri, May 31 - Mon, Jun 3
10:45 am - 8:38 pmIDA-ONT
10h 53m1 stop
6:25 pm - 9:35 amONT-IDA
14h 10m1 stop
$526United Airlines
Find Deal
Sat, Jun 22 - Sat, Jun 29
3:32 pm - 9:05 amIDA-ONT
18h 33m1 stop
8:09 pm - 11:57 pmONT-IDA
26h 48m1 stop
$532Alaska Airlines
Find Deal
Wed, Jun 5 - Sat, Jun 8
10:45 am - 10:27 pmIDA-ONT
12h 42m2 stops
5:20 am - 5:17 pmONT-IDA
10h 57m1 stop
$556United Airlines
Find Deal
Sat, Jun 22 - Sat, Jun 29
1:15 pm - 10:29 pmIDA-ONT
10h 14m2 stops
10:34 am - 9:34 pmONT-IDA
10h 00m1 stop
$581American Airlines
Find Deal
Thu, May 23 - Mon, May 27
1:15 pm - 10:29 pmIDA-ONT
10h 14m2 stops
9:30 am - 9:34 pmONT-IDA
11h 04m2 stops
$661American Airlines
Find Deal
Thu, May 23 - Mon, May 27

Flights from Idaho Falls to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Idaho Falls to Ontario 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 Idaho Falls to Ontario?

The average price of all flights from Idaho Falls to Ontario clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Ontario on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Idaho Falls to Ontario. For your return ticket, we recommend flying on a Tuesday and avoiding Mondays for the best deals.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Idaho Falls to Ontario found by KAYAK users in the last 72 hours was for $377 on Delta, followed by Alaska Airlines ($512). One-way flight deals have also been found from as low as $174 on Delta and from $299 on United Airlines.

Good to know

Cheapest flight

$174
Flight from Idaho Falls to Ontario

When to book flights from Idaho Falls to Ontario

Are your dates flexible? Find out the best times to travel from Idaho Falls to Ontario 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 Idaho Falls to Ontario

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

    In the last 3 days, the lowest price for a flight from Idaho Falls to Ontario was $174 for a one-way ticket and $377 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Idaho Falls to Ontario?

    When flying out of Idaho Falls you will be using Idaho Falls Fanning Field. You will be landing at Ontario, also known as Ontario.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Ontario are Delta and American Airlines. With an average price for the route of $473 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 $506 and an overall rating of 7.3.

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

    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 Idaho Falls to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Idaho Falls 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 Idaho Falls to Ontario?

    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 Ontario with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and ONT 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 Idaho Falls to Ontario?

    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 Ontario from Idaho Falls 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 Idaho Falls to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Ontario. 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 Idaho Falls to Ontario? 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 10838 reviews
8.6Crew
7.9Comfort
7.4Food
8.2Boarding
8.0Entertainment
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.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Was a great smooth flight from Detroit to San Diego.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Poor availability of food. Cold cabin temperature. Extremely long waiting time for a flight attendant to respond to a call button signal.

2.5h delay due to unruly passenger in first class. Had to be removed from the flight. No food unless pre ordered. Didn't know we would need it because of delay.

Book cheap flights from Idaho Falls to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Idaho Falls to Ontario found on KAYAK in the last 72 hours.
6/6Thu
1 stopDelta
5h 43mIDA-ONT
$174
6/7Fri
1 stopDelta
5h 42mIDA-ONT
$229
6/9Sun
1 stopDelta
5h 42mIDA-ONT
$279
6/22Sat
2 stopsUnited Airlines
12h 42mIDA-ONT
$299
7/7Sun
1 stopDelta
5h 42mIDA-ONT
$339
6/10Mon
2 stopsDelta
10h 33mIDA-ONT
$344
6/6Thu
2 stopsDelta
10h 06mIDA-ONT
$379
6/8Sat
2 stopsDelta
10h 33mIDA-ONT
$424
7/7Sun
2 stopsAmerican Airlines
11h 30mIDA-ONT
$712

Search by stops

Search by airline

Search by price

Last minute flights from Idaho Falls to Ontario

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 Idaho Falls to Ontario that are departing in the next 10 days.
5/9Thu
multi-stopDelta
5h 43mIDA-ONT
5/12Sun
multi-stopDelta
5h 43mONT-IDA
$672
5/7Tue
multi-stopAlaska Airlines
6h 57mIDA-ONT
5/14Tue
multi-stopAlaska Airlines
7h 51mONT-IDA
$722
5/9Thu
multi-stopAmerican Airlines
7h 53mIDA-ONT
5/12Sun
multi-stopAmerican Airlines
11h 04mONT-IDA
$727
5/9Thu
multi-stopAmerican Airlines
12h 48mIDA-ONT
5/12Sun
multi-stopAmerican Airlines
11h 04mONT-IDA
$732
5/7Tue
multi-stopAmerican Airlines
10h 14mIDA-ONT
5/14Tue
multi-stopAmerican Airlines
10h 00mONT-IDA
$835
5/7Tue
multi-stopAmerican Airlines
10h 14mIDA-ONT
5/14Tue
multi-stopAmerican Airlines
11h 04mONT-IDA
$920

Search by stops

Search by airline

Search by price

Idaho Falls - Ontario Flights

Departure:

Idaho Falls (IDA)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Idaho Falls

Cabin classes: