$89 Find Cheap Flights from Ontario to Idaho

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 departing on 7/26. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Idaho, 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, as well as popular online travel agencies
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Best Idaho Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$199
Idaho Falls
Idaho Falls1 stop$277
Hailey
Hailey1 stop$329
Lewiston
Lewiston1 stop$516
Twin Falls
Twin Falls1 stop$416
Pocatello
Pocatello1 stop$417
Spokane
Spokane1 stop$178
Boise
Boise1 stop$199
Idaho Falls
Idaho Falls1 stop$277
Hailey
Hailey1 stop$329
Lewiston
Lewiston1 stop$516
Twin Falls
Twin Falls1 stop$416
Pocatello
Pocatello1 stop$417
Spokane
Spokane1 stop$178

Cheap Flights from Ontario to Idaho

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Idaho 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

Sun, Jul 27 - Tue, Jul 29
Alaska Airlines Logo
4:00 pm - 9:09 pmONT-GEG
5h 09m1 stop
Alaska Airlines Logo
6:07 pm - 12:13 amGEG-ONT
6h 06m1 stop
$178Alaska Airlines
Find Deal
Fri, Jul 25 - Fri, Aug 1
Delta Logo
5:59 pm - 10:48 pmONT-GEG
4h 49m1 stop
Delta Logo
5:35 pm - 10:47 pmGEG-ONT
5h 12m1 stop
$179Delta
Find Deal
Fri, Aug 15 - Tue, Aug 19
Southwest Logo
9:15 am - 5:05 pmONT-GEG
7h 50m1 stop
Southwest Logo
10:45 am - 5:30 pmGEG-ONT
6h 45m2 stops
$184Southwest
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Fri, Jul 4 - Thu, Jul 10
Delta Logo
5:08 pm - 10:41 pmONT-GEG
5h 33m1 stop
Delta Logo
7:15 am - 1:34 pmGEG-ONT
6h 19m1 stop
$189Delta
Find Deal
Fri, Jul 11 - Mon, Jul 14
Southwest Logo
2:15 pm - 12:30 amONT-GEG
10h 15m2 stops
Southwest Logo
4:10 pm - 11:55 pmGEG-ONT
7h 45m1 stop
$190Southwest
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Wed, Jul 9 - Fri, Jul 11
Alaska Airlines Logo
6:00 am - 12:28 pmONT-GEG
6h 28m1 stop
Alaska Airlines Logo
6:07 pm - 12:13 amGEG-ONT
6h 06m1 stop
$199Alaska Airlines
Find Deal
Sat, Sep 6 - Wed, Sep 10
American Airlines Logo
10:54 am - 7:59 pmONT-JAC
8h 05m1 stop
American Airlines Logo
4:29 pm - 10:33 pmJAC-ONT
7h 04m1 stop
$267American Airlines
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Sat, Sep 6 - Wed, Sep 10
American Airlines Logo
6:10 am - 7:59 pmONT-JAC
12h 49m2 stops
American Airlines Logo
4:29 pm - 10:33 pmJAC-ONT
7h 04m1 stop
$272American Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
1:15 pm - 8:49 pmONT-JAC
6h 34m1 stop
United Airlines Logo
4:18 pm - 8:24 pmJAC-ONT
5h 06m1 stop
$337United Airlines
Find Deal
Sat, Dec 6 - Sun, Jan 18
United Airlines Logo
6:42 pm - 11:32 pmONT-BOI
3h 50m1 stop
United Airlines Logo
7:00 am - 12:33 pmBOI-ONT
6h 33m1 stop
$356United Airlines
Find Deal
Useful Info

KAYAK's insights & trends for Ontario to Idaho flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Idaho, 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 is January, when tickets cost $240 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $416 and $366 respectively.

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

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

For Ontario to Idaho, Thursday is the cheapest day to fly on average and Friday is the most expensive. Flying from Idaho back to Ontario, the best deals are generally found on Tuesday, with Sunday being the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Idaho, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Idaho, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.


Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$89
Best time to beat the crowds but there is an average 39% increase in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Ontario to Spokane

FAQs - booking Idaho flights

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

    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.

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

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

    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 from Ontario to Idaho with an airline and back with another airline.

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

    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 from Ontario to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Idaho?

    The cheapest time of day to fly to Idaho is generally at night, when round-trip flights cost $285 on average. Morning departures are around 3% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $351.

Reviews of the top 5 airlines serving from Ontario to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Idaho. 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? 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
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
8.1Boarding
7.8Comfort
8.5Crew
7.1Entertainment
Airline reviews

The Alaska app and website were not fully operational. I had to spend about 15 minutes at the counter doing things that should have been completed online. The agent was very nice and helpful, however.

8.0 ExcellentAnonymous, Jun 2025OAK - SEA
Read more Alaska Airlines reviews

The Alaska app and website were not fully operational. I had to spend about 15 minutes at the counter doing things that should have been completed online. The agent was very nice and helpful, however.

Flying on Hawaiian Airlines was good. But, getting a boarding pass was a hassle. I booked what I thought was an Alaska Airlines flight that was actually a Hawaiian Airlines flight. I couldn't check in online. I had to wait for the Hawaiian Airlines counter to open so I could get my boarding pass which was a requirement for me to get in The Club or the Centurion Lounge. (I had no check in luggage so I didn't expect to have to physically check in.) The Alaska Airlines staff blamed the FAA for the problem.

Staff are helpful and patient. I don’t appreciate the almost 5 hours delay and also the delay of our luggage and being switched from one carousel to another to pick them up.

Staff were great but we were delayed on the tarmac for over an hour.

Great crew, smooth flight and landing. Wish they would offer Dr. Pepper and a choice of flavors of pretzels.

Thank you still providing bags for vomit. My son had a migraine and needed a bag to vomit in and it was right there behind the seat in front of us. Thank you!

We waited over an hour for our luggage to arrive at the carousel in Seattle.

The plane was delayed a bit. It wasn't a huge problem though, as we were heading back home.

Flight was great. Boarding was crazy because another flight was boarding late next to ours so everyone was standing and in the way.

Comfortable seat, a little delay, very informative. Love Wi-Fi

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

We had a nice flight. Boarding was easy, our seats were comfortable and the on board service was pleasant.

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

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

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

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

Information on your arrival and departure airports

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