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Cheap flights from Idaho Falls to Los Angeles from $148

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Los Angeles departing on 2/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Idaho Falls to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:58 pm - 11:56 pm
IDA
-
ONT
5h 58m1 stop
Alaska Airlines Logo
11:53 am - 6:18 pm
ONT
-
IDA
5h 25m1 stop
$295Alaska Airlines
Mon, Jan 26 - Sat, Jan 31
Alaska Airlines Logo
9:00 am - 11:56 pm
IDA
-
ONT
15h 56m1 stop
Alaska Airlines Logo
6:00 am - 6:18 pm
ONT
-
IDA
11h 18m1 stop
$305Alaska Airlines
Thu, Feb 5 - Sun, Feb 8
Alaska Airlines Logo
6:58 pm - 11:56 pm
IDA
-
ONT
5h 58m1 stop
Alaska Airlines Logo
7:00 am - 6:18 pm
ONT
-
IDA
10h 18m2 stops
$317Alaska Airlines
Mon, Jan 26 - Sat, Jan 31
Alaska Airlines Logo
6:58 pm - 11:56 pm
IDA
-
ONT
5h 58m1 stop
Alaska Airlines Logo
6:00 am - 10:59 pm
ONT
-
IDA
15h 59m1 stop
$325Alaska Airlines
Thu, Feb 5 - Sun, Feb 8
Delta Logo
6:35 pm - 11:49 pm
IDA
-
ONT
6h 14m1 stop
Delta Logo
11:59 am - 10:20 pm
ONT
-
IDA
9h 21m2 stops
$333Delta
Thu, Mar 5 - Tue, Mar 10
Alaska Airlines Logo
4:08 pm - 10:32 pm
IDA
-
ONT
7h 24m1 stop
Alaska Airlines Logo
3:26 pm - 10:40 pm
ONT
-
IDA
6h 14m1 stop
$335Alaska Airlines
Wed, May 6 - Sun, May 10
Alaska Airlines Logo
6:58 pm - 8:36 pm
IDA
-
ONT
26h 38m1 stop
Alaska Airlines Logo
6:00 am - 6:18 pm
ONT
-
IDA
11h 18m1 stop
$336Alaska Airlines
Fri, Jan 30 - Sun, Feb 1
Alaska Airlines Logo
8:00 am - 10:44 pm
IDA
-
ONT
15h 44m1 stop
Alaska Airlines Logo
6:14 am - 4:43 pm
ONT
-
IDA
9h 29m1 stop
$346Alaska Airlines
Wed, Feb 25 - Mon, Mar 2
United Airlines Logo
2:30 pm - 8:36 pm
IDA
-
ONT
7h 06m1 stop
United Airlines Logo
5:10 am - 1:24 pm
ONT
-
IDA
7h 14m1 stop
$351United Airlines
Fri, Apr 17 - Sun, Apr 19
Alaska Airlines Logo
4:08 pm - 9:45 am
IDA
-
ONT
18h 37m1 stop
Alaska Airlines Logo
6:00 am - 10:40 pm
ONT
-
IDA
15h 40m1 stop
$353Alaska Airlines
Mon, Apr 27 - Sun, May 10

Alaska Airlines flights from Idaho Falls to Ontario

Our best Alaska Airlines deals on Idaho Falls to Ontario flight tickets
Alaska Airlines
Jan 26
IDA6:58 pmIdaho Falls Fanning Field
5h 58m
1 stop
ONT11:56 pmOntario
Jan 31
ONT11:53 amOntario
5h 25m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
$295
Find similar
Alaska Airlines
Feb 5
IDA9:00 amIdaho Falls Fanning Field
15h 56m
1 stop
ONT11:56 pmOntario
Feb 8
ONT6:00 amOntario
11h 18m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
$305
Find similar
Alaska Airlines
Jan 26
IDA6:58 pmIdaho Falls Fanning Field
5h 58m
1 stop
ONT11:56 pmOntario
Jan 31
ONT7:00 amOntario
10h 18m
2 stops
IDA6:18 pmIdaho Falls Fanning Field
$317
Find similar

Delta flights from Idaho Falls to Ontario

Our best Delta deals on Idaho Falls to Ontario flight tickets
Delta
Mar 5
IDA6:35 pmIdaho Falls Fanning Field
6h 14m
1 stop
ONT11:49 pmOntario
Mar 10
ONT11:59 amOntario
9h 21m
2 stops
IDA10:20 pmIdaho Falls Fanning Field
$333
Find similar
Delta
Mar 5
IDA6:35 pmIdaho Falls Fanning Field
6h 14m
1 stop
ONT11:49 pmOntario
Mar 10
ONT5:09 pmOntario
4h 11m
1 stop
IDA10:20 pmIdaho Falls Fanning Field
$380
Find similar
Delta
Jan 25
IDA5:25 amIdaho Falls Fanning Field
9h 31m
2 stops
ONT1:56 pmOntario
Jan 28
ONT7:30 amOntario
9h 21m
2 stops
IDA5:51 pmIdaho Falls Fanning Field
$424
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Ontario 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 January 6, 2026.
Use the filters below to find and compare flights from Idaho Falls to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 1/26

6:58 pm-11:56 pm

1 stop5h 58m

Ontario

Sat 1/31

11:53 am-6:18 pm

1 stop5h 25m

$295

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Thu 2/5

9:00 am-11:56 pm

1 stop15h 56m

Ontario

Sun 2/8

6:00 am-6:18 pm

1 stop11h 18m

$305

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 1/26

6:58 pm-11:56 pm

1 stop5h 58m

Ontario

Sat 1/31

7:00 am-6:18 pm

2 stops10h 18m

$317

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Thu 2/5

6:58 pm-11:56 pm

1 stop5h 58m

Ontario

Sun 2/8

6:00 am-10:59 pm

1 stop15h 59m

$325

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Thu 3/5

6:35 pm-11:49 pm

1 stop6h 14m

Ontario

Tue 3/10

11:59 am-10:20 pm

2 stops9h 21m

$333

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 5/6

4:08 pm-10:32 pm

1 stop7h 24m

Ontario

Sun 5/10

3:26 pm-10:40 pm

1 stop6h 14m

$335

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 1/30

6:58 pm-8:36 pm

1 stop26h 38m

Ontario

Sun 2/1

6:00 am-6:18 pm

1 stop11h 18m

$336

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 2/25

8:00 am-10:44 pm

1 stop15h 44m

Ontario

Mon 3/2

6:14 am-4:43 pm

1 stop9h 29m

$346

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 4/17

2:30 pm-8:36 pm

1 stop7h 06m

Ontario

Sun 4/19

5:10 am-1:24 pm

1 stop7h 14m

$351

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 4/27

4:08 pm-9:45 am

1 stop18h 37m

Ontario

Sun 5/10

6:00 am-10:40 pm

1 stop15h 40m

$353

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Idaho Falls to Ontario

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 Idaho Falls Fanning Field to Ontario?

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

What airlines fly to Ontario?

Delta, Allegiant Air and United Airlines are the top three most popular airlines that fly to Ontario from Idaho Falls according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from Idaho Falls to Ontario

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

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

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

Fastest flight time

5h 02m

Direct flights

None
The fastest flight from Idaho Falls to Ontario takes 5h 02m
There are no direct flights from Idaho Falls to Ontario. There are no popular flight routes from Idaho Falls to Ontario.
Search flight deals

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

    There are 715.8 mi between Idaho Falls Fanning Field and Ontario. A reasonable flight in good conditions will take 5h 02m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The necessary travel and health documents for your Ontario 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 Idaho Falls to Ontario?

Best airlines flying from Idaho Falls to Ontario

Compare and see reviews for airlines that fly from Idaho Falls to Ontario with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $164Free CancellationRating
7.9
8,018 reviews
Search Delta flights
United AirlinesPriceFrom $289Free CancellationRating
7.4
9,132 reviews
Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Idaho Falls.

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

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

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

momondo helps you find the best flight between Idaho Falls and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Ontario from Idaho Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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