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Cheap flights from Ontario to Idaho Falls from $303

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

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Find the cheapest flights from Ontario to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 3:37 pmYOW-IDA
11h 37m2 stops
United Airlines Logo
5:30 pm - 1:45 pmIDA-YOW
18h 15m2 stops
$668United Airlines
Find Deal
Wed, Apr 8 - Thu, Apr 9
United Airlines Logo
10:00 am - 9:06 pmYOW-IDA
13h 06m2 stops
United Airlines Logo
5:30 pm - 1:45 pmIDA-YOW
18h 15m2 stops
$682United Airlines
Find Deal
Wed, Apr 8 - Thu, Apr 9
United Airlines Logo
6:00 am - 3:37 pmYOW-IDA
11h 37m2 stops
United Airlines Logo
2:35 pm - 1:45 pmIDA-YOW
21h 10m2 stops
$731United Airlines
Find Deal
Wed, Apr 8 - Thu, Apr 9

United Airlines flights from Region of Ontario to Idaho Falls

Our best United Airlines deals on Region of Ontario to Idaho Falls flight tickets
United Airlines
Apr 8
YOW6:00 amOttawa
11h 37m
2 stops
IDA3:37 pmIdaho Falls Fanning Field
Apr 9
IDA5:30 pmIdaho Falls Fanning Field
18h 15m
2 stops
YOW1:45 pmOttawa
$668
Find similar
United Airlines
Apr 8
YOW10:00 amOttawa
13h 06m
2 stops
IDA9:06 pmIdaho Falls Fanning Field
Apr 9
IDA5:30 pmIdaho Falls Fanning Field
18h 15m
2 stops
YOW1:45 pmOttawa
$682
Find similar
United Airlines
Apr 8
YOW6:00 amOttawa
11h 37m
2 stops
IDA3:37 pmIdaho Falls Fanning Field
Apr 9
IDA2:35 pmIdaho Falls Fanning Field
21h 10m
2 stops
YOW1:45 pmOttawa
$731
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Ontario to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaIdaho Falls

YOW - IDA

YOWIDA

Ottawa

Wed 4/8

6:00 am-3:37 pm

2 stops11h 37m

Idaho Falls Fanning Field

Thu 4/9

5:30 pm-1:45 pm

2 stops18h 15m

$668

OttawaIdaho Falls

YOW - IDA

YOWIDA

Ottawa

Wed 4/8

10:00 am-9:06 pm

2 stops13h 06m

Idaho Falls Fanning Field

Thu 4/9

5:30 pm-1:45 pm

2 stops18h 15m

$682

OttawaIdaho Falls

YOW - IDA

YOWIDA

Ottawa

Wed 4/8

6:00 am-3:37 pm

2 stops11h 37m

Idaho Falls Fanning Field

Thu 4/9

2:35 pm-1:45 pm

2 stops21h 10m

$731

OttawaIdaho Falls

YOW - IDA

YOWIDA

Ottawa

Tue 11/18

7:30 pm-10:52 pm

2 stops29h 22m

$303

OttawaIdaho Falls

YOW - IDA

YOWIDA

Ottawa

Tue 11/18

10:30 am-9:48 am

3 stops25h 18m

$329

OttawaIdaho Falls

YOW - IDA

YOWIDA

Ottawa

Fri 12/26

6:45 am-12:07 am

3 stops19h 22m

$541

OttawaIdaho Falls

YOW - IDA

YOWIDA

Ottawa

Fri 12/26

2:15 pm-9:58 am

2 stops21h 43m

$599

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Region of Ontario to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Tuesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $553. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Monday is $731.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is at noon. Flights from Region of Ontario to Idaho Falls during this time can be as low as $553. Try not to purchase tickets in the morning because they tend to be around $635. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Region of Ontario to Idaho Falls flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Idaho Falls

Direct flights

None
There are no direct flights from Region of Ontario to Idaho Falls. There are no popular flight routes from Region of Ontario to Idaho Falls.
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  • When did momondo last update prices for flights from Ontario to Idaho Falls Fanning Field Airport?

    Prices for flights from Ontario to Idaho Falls Fanning Field Airport were last updated today.

  • How old do you have to be to fly from Ontario to Idaho Falls Fanning Field Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The required travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Idaho Falls?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Idaho Falls. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Idaho Falls with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Idaho Falls from Ontario with this policy.

How can momondo help me find flights from Ontario to Idaho Falls?

Once all potential Ontario to Idaho Falls flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Idaho Falls right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Idaho Falls flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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