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Cheap flights from Ontario to Idaho Falls from $132

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 4/5. 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
1 adult, Economy, 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.
Multiple Airlines Logo
10:27 pm - 3:27 pm
ONT
-
IDA
16h 00m
1 stop
Multiple Airlines Logo
10:21 pm - 10:44 am
IDA
-
ONT
13h 23m
1 stop
$236Multiple Airlines
Thu, Apr 9 - Mon, Apr 13
Multiple Airlines Logo
10:27 pm - 3:27 pm
ONT
-
IDA
16h 00m
1 stop
Multiple Airlines Logo
10:21 pm - 11:55 pm
IDA
-
ONT
26h 34m
2 stops
$278Multiple Airlines
Thu, Apr 9 - Mon, Apr 13
Delta Logo
6:00 am - 10:47 am
ONT
-
IDA
3h 47m
1 stop
Delta Logo
6:54 pm - 11:34 pm
IDA
-
ONT
5h 40m
1 stop
$297Delta
Sat, May 16 - Tue, May 19
United Airlines Logo
5:00 am - 1:25 pm
ONT
-
IDA
7h 25m
1 stop
United Airlines Logo
2:31 pm - 8:36 pm
IDA
-
ONT
7h 05m
1 stop
$308United Airlines
Sat, May 16 - Tue, May 19
Multiple Airlines Logo
10:07 am - 4:05 pm
ONT
-
IDA
4h 58m
1 stop
Multiple Airlines Logo
10:54 pm - 8:16 pm
IDA
-
ONT
22h 22m
1 stop
$312Multiple Airlines
Fri, Aug 7 - Mon, Aug 17
Delta Logo
6:00 am - 10:47 am
ONT
-
IDA
3h 47m
1 stop
Delta Logo
6:00 am - 8:53 am
IDA
-
ONT
3h 53m
1 stop
$314Delta
Wed, May 13 - Fri, May 15
Delta Logo
6:00 am - 10:47 am
ONT
-
IDA
3h 47m
1 stop
Delta Logo
6:00 am - 8:53 am
IDA
-
ONT
3h 53m
1 stop
$319Delta
Sat, May 16 - Tue, May 19
Multiple Airlines Logo
4:08 pm - 4:08 pm
ONT
-
IDA
23h 00m
1 stop
Multiple Airlines Logo
10:56 pm - 3:13 pm
IDA
-
ONT
17h 17m
1 stop
$321Multiple Airlines
Thu, Jun 18 - Mon, Jun 22
United Airlines Logo
5:00 am - 1:25 pm
ONT
-
IDA
7h 25m
1 stop
United Airlines Logo
2:31 pm - 8:36 pm
IDA
-
ONT
7h 05m
1 stop
$356United Airlines
Sat, May 16 - Tue, May 19
Delta Logo
1:35 pm - 10:42 pm
ONT
-
IDA
8h 07m
2 stops
Delta Logo
6:00 am - 8:53 am
IDA
-
ONT
3h 53m
1 stop
$361Delta
Wed, May 13 - Fri, May 15

Delta flights from Ontario to Idaho Falls

Our best Delta deals on Ontario to Idaho Falls flight tickets
Delta
May 16
ONT6:00 amOntario
3h 47m
1 stop
IDA10:47 amIdaho Falls Fanning Field
May 19
IDA6:54 pmIdaho Falls Fanning Field
5h 40m
1 stop
ONT11:34 pmOntario
$297
Delta
May 13
ONT6:00 amOntario
3h 47m
1 stop
IDA10:47 amIdaho Falls Fanning Field
May 15
IDA6:00 amIdaho Falls Fanning Field
3h 53m
1 stop
ONT8:53 amOntario
$314
Delta
May 16
ONT6:00 amOntario
3h 47m
1 stop
IDA10:47 amIdaho Falls Fanning Field
May 19
IDA6:00 amIdaho Falls Fanning Field
3h 53m
1 stop
ONT8:53 amOntario
$319

United Airlines flights from Ontario to Idaho Falls

Our best United Airlines deals on Ontario to Idaho Falls flight tickets
United Airlines
May 16
ONT5:00 amOntario
7h 25m
1 stop
IDA1:25 pmIdaho Falls Fanning Field
May 19
IDA2:31 pmIdaho Falls Fanning Field
7h 05m
1 stop
ONT8:36 pmOntario
$308
United Airlines
May 16
ONT5:00 amOntario
7h 25m
1 stop
IDA1:25 pmIdaho Falls Fanning Field
May 19
IDA2:31 pmIdaho Falls Fanning Field
7h 05m
1 stop
ONT8:36 pmOntario
$356
United Airlines
Aug 1
ONT1:18 pmOntario
6h 49m
1 stop
IDA9:07 pmIdaho Falls Fanning Field
Aug 8
IDA4:10 pmIdaho Falls Fanning Field
5h 32m
1 stop
ONT8:42 pmOntario
$389

momondo Fare Finder

 
Customize your flight search to find flights from 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 March 14, 2026.
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

Cheapest round-trip

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Thu 4/9

10:27 pm-3:27 pm

1 stop16h 00m

Idaho Falls Fanning Field

Mon 4/13

10:21 pm-10:44 am

1 stop13h 23m

$236

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Thu 4/9

10:27 pm-3:27 pm

1 stop16h 00m

Idaho Falls Fanning Field

Mon 4/13

10:21 pm-11:55 pm

2 stops26h 34m

$278

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 5/16

6:00 am-10:47 am

1 stop3h 47m

Idaho Falls Fanning Field

Tue 5/19

6:54 pm-11:34 pm

1 stop5h 40m

$297

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 5/16

5:00 am-1:25 pm

1 stop7h 25m

Idaho Falls Fanning Field

Tue 5/19

2:31 pm-8:36 pm

1 stop7h 05m

$308

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Fri 8/7

10:07 am-4:05 pm

1 stop4h 58m

Idaho Falls Fanning Field

Mon 8/17

10:54 pm-8:16 pm

1 stop22h 22m

$312
Quickest round-trip

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Wed 5/13

6:00 am-10:47 am

1 stop3h 47m

Idaho Falls Fanning Field

Fri 5/15

6:00 am-8:53 am

1 stop3h 53m

$314

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 5/16

6:00 am-10:47 am

1 stop3h 47m

Idaho Falls Fanning Field

Tue 5/19

6:00 am-8:53 am

1 stop3h 53m

$319

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Thu 6/18

4:08 pm-4:08 pm

1 stop23h 00m

Idaho Falls Fanning Field

Mon 6/22

10:56 pm-3:13 pm

1 stop17h 17m

$321

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Sat 5/16

5:00 am-1:25 pm

1 stop7h 25m

Idaho Falls Fanning Field

Tue 5/19

2:31 pm-8:36 pm

1 stop7h 05m

$356

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Wed 5/13

1:35 pm-10:42 pm

2 stops8h 07m

Idaho Falls Fanning Field

Fri 5/15

6:00 am-8:53 am

1 stop3h 53m

$361

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from 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 airline that flies from Ontario to Idaho Falls Fanning Field?

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Ontario to Idaho Falls Fanning Field

What airlines fly to Idaho Falls?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Idaho Falls from Ontario according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 5 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Idaho Falls (ONT to IDA) flight deals and tips

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

Fastest flight time

3h 39m

Direct flights

None
The fastest flight from Ontario to Idaho Falls takes 3h 39m
There are no direct flights from Ontario to Idaho Falls. There are no popular flight routes from Ontario to Idaho Falls.
Search flight deals

  • How far is Ontario to Idaho Falls Fanning Field by plane?

    A flight from Ontario to Idaho Falls Fanning Field will travel around 715.8 mi. Flights usually cover this in 3h 39m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Ontario Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Idaho Falls Fanning Field Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Idaho Falls Fanning Field Airport.

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

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Idaho Falls?

Best airlines flying from Ontario to Idaho Falls

Compare and see reviews for airlines that fly from Ontario to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $180Free CancellationRating
7.9
8,291 reviews
Search Delta flights

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?

It is quick and easy to find Ontario to Idaho Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho Falls that suits you.

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

momondo does allow users to show only those flights to Idaho Falls from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Idaho Falls.

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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