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Cheap flights from Ontario to Idaho Falls from $109

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 2/24. 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.
Alaska Airlines Logo
4:02 pm - 11:36 pm
ONT
-
IDA
6h 34m
1 stop
Alaska Airlines Logo
5:20 pm - 11:32 pm
IDA
-
ONT
7h 12m
1 stop
$230Alaska Airlines
mié., feb. 25 - sáb., feb. 28
Alaska Airlines Logo
4:02 pm - 11:36 pm
ONT
-
IDA
6h 34m
1 stop
Alaska Airlines Logo
5:20 pm - 11:32 pm
IDA
-
ONT
7h 12m
1 stop
$279Alaska Airlines
mié., feb. 25 - vie., feb. 27
American Airlines Logo
5:02 pm - 11:24 pm
ONT
-
IDA
5h 22m
1 stop
American Airlines Logo
6:03 am - 11:36 am
IDA
-
ONT
6h 33m
1 stop
$287American Airlines
mar., feb. 24 - sáb., feb. 28
Delta Logo
6:00 am - 12:22 pm
ONT
-
IDA
5h 22m
1 stop
Delta Logo
6:35 pm - 11:49 pm
IDA
-
ONT
6h 14m
1 stop
$316Delta
jue., feb. 19 - mié., feb. 25
Alaska Airlines Logo
4:02 pm - 11:36 pm
ONT
-
IDA
6h 34m
1 stop
Alaska Airlines Logo
5:20 pm - 11:32 pm
IDA
-
ONT
7h 12m
1 stop
$328Alaska Airlines
jue., feb. 26 - vie., feb. 27
Delta Logo
5:00 pm - 10:21 pm
ONT
-
IDA
4h 21m
1 stop
Delta Logo
6:35 pm - 11:49 pm
IDA
-
ONT
6h 14m
1 stop
$331Delta
mar., feb. 24 - dom., mar. 1
Alaska Airlines Logo
7:08 pm - 4:19 pm
ONT
-
IDA
20h 11m
1 stop
Alaska Airlines Logo
4:59 pm - 11:59 pm
IDA
-
ONT
8h 00m
1 stop
$343Alaska Airlines
mié., abr. 15 - sáb., abr. 18
United Airlines Logo
5:00 am - 1:31 pm
ONT
-
IDA
7h 31m
1 stop
United Airlines Logo
2:35 pm - 8:17 pm
IDA
-
ONT
6h 42m
1 stop
$357United Airlines
jue., may. 21 - vie., may. 22
Delta Logo
5:05 pm - 10:14 pm
ONT
-
IDA
4h 09m
1 stop
Delta Logo
11:20 am - 4:14 pm
IDA
-
ONT
5h 54m
1 stop
$363Delta
lun., jun. 29 - vie., jul. 3
Alaska Airlines Logo
6:14 am - 11:36 pm
ONT
-
IDA
16h 22m
1 stop
Alaska Airlines Logo
5:59 pm - 9:39 am
IDA
-
ONT
16h 40m
1 stop
$373Alaska Airlines
dom., mar. 15 - sáb., mar. 21

Alaska Airlines flights from Ontario to Idaho Falls

Our best Alaska Airlines deals on Ontario to Idaho Falls flight tickets
Alaska Airlines
Feb 25
ONT4:02 pmOntario
6h 34m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Feb 28
IDA5:20 pmIdaho Falls Fanning Field
7h 12m
1 stop
ONT11:32 pmOntario
$230
Alaska Airlines
Feb 25
ONT4:02 pmOntario
6h 34m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Feb 27
IDA5:20 pmIdaho Falls Fanning Field
7h 12m
1 stop
ONT11:32 pmOntario
$279
Alaska Airlines
Feb 26
ONT4:02 pmOntario
6h 34m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Feb 27
IDA5:20 pmIdaho Falls Fanning Field
7h 12m
1 stop
ONT11:32 pmOntario
$328

American Airlines flights from Ontario to Idaho Falls

Our best American Airlines deals on Ontario to Idaho Falls flight tickets
American Airlines
Feb 24
ONT5:02 pmOntario
5h 22m
1 stop
IDA11:24 pmIdaho Falls Fanning Field
Feb 28
IDA6:03 amIdaho Falls Fanning Field
6h 33m
1 stop
ONT11:36 amOntario
$287
American Airlines
Feb 10
ONT4:45 pmOntario
4h 51m
1 stop
IDA10:36 pmIdaho Falls Fanning Field
Feb 14
IDA2:18 pmIdaho Falls Fanning Field
22h 10m
2 stops
ONT11:28 amOntario
$520

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 enero 27, 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

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mié. 2/25

4:02 pm-11:36 pm

1 stop6h 34m

Idaho Falls Fanning Field

sáb. 2/28

5:20 pm-11:32 pm

1 stop7h 12m

$230

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mié. 2/25

4:02 pm-11:36 pm

1 stop6h 34m

Idaho Falls Fanning Field

vie. 2/27

5:20 pm-11:32 pm

1 stop7h 12m

$279

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 2/24

5:02 pm-11:24 pm

1 stop5h 22m

Idaho Falls Fanning Field

sáb. 2/28

6:03 am-11:36 am

1 stop6h 33m

$287

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

jue. 2/19

6:00 am-12:22 pm

1 stop5h 22m

Idaho Falls Fanning Field

mié. 2/25

6:35 pm-11:49 pm

1 stop6h 14m

$316

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

jue. 2/26

4:02 pm-11:36 pm

1 stop6h 34m

Idaho Falls Fanning Field

vie. 2/27

5:20 pm-11:32 pm

1 stop7h 12m

$328

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mar. 2/24

5:00 pm-10:21 pm

1 stop4h 21m

Idaho Falls Fanning Field

dom. 3/1

6:35 pm-11:49 pm

1 stop6h 14m

$331

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

mié. 4/15

7:08 pm-4:19 pm

1 stop20h 11m

Idaho Falls Fanning Field

sáb. 4/18

4:59 pm-11:59 pm

1 stop8h 00m

$343

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

jue. 5/21

5:00 am-1:31 pm

1 stop7h 31m

Idaho Falls Fanning Field

vie. 5/22

2:35 pm-8:17 pm

1 stop6h 42m

$357

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

lun. 6/29

5:05 pm-10:14 pm

1 stop4h 09m

Idaho Falls Fanning Field

vie. 7/3

11:20 am-4:14 pm

1 stop5h 54m

$363

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

dom. 3/15

6:14 am-11:36 pm

1 stop16h 22m

Idaho Falls Fanning Field

sáb. 3/21

5:59 pm-9:39 am

1 stop16h 40m

$373

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 and Delta 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 38% 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 $219Free CancellationRating
7.9
8,118 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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