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Cheap flights from Idaho Falls to Los Angeles from $116

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 11/30. 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
9:00 am - 8:36 pmIDA-ONT
12h 36m1 stop
Alaska Airlines Logo
4:03 pm - 10:59 pmONT-IDA
5h 56m1 stop
$244Alaska Airlines
Find Deal
Tue, Jan 13 - Wed, Jan 21
Alaska Airlines Logo
6:05 am - 6:33 pmIDA-ONT
13h 28m1 stop
Alaska Airlines Logo
11:53 am - 10:59 pmONT-IDA
10h 06m1 stop
$254Alaska Airlines
Find Deal
Sat, Dec 6 - Wed, Jan 7
Alaska Airlines Logo
6:05 am - 11:19 amIDA-ONT
6h 14m1 stop
Alaska Airlines Logo
6:00 am - 10:59 pmONT-IDA
15h 59m1 stop
$264Alaska Airlines
Find Deal
Sat, Dec 6 - Sun, Jan 11
American Airlines Logo
7:00 am - 12:00 pmIDA-ONT
6h 00m1 stop
American Airlines Logo
4:47 pm - 10:36 pmONT-IDA
4h 49m1 stop
$308American Airlines
Find Deal
Wed, Dec 10 - Sat, Dec 13
Delta Logo
6:45 pm - 11:52 pmIDA-ONT
6h 07m1 stop
Delta Logo
5:05 pm - 10:21 pmONT-IDA
4h 16m1 stop
$321Delta
Find Deal
Tue, Mar 31 - Thu, Apr 2
Delta Logo
1:17 pm - 4:09 pmIDA-ONT
3h 52m1 stop
Delta Logo
6:00 am - 12:37 pmONT-IDA
5h 37m1 stop
$329Delta
Find Deal
Wed, Dec 10 - Thu, Dec 11
Multiple Airlines Logo
10:52 pm - 4:31 pmIDA-ONT
18h 39m1 stop
Multiple Airlines Logo
6:00 am - 4:12 pmONT-IDA
9h 12m1 stop
$366Multiple Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 2
American Airlines Logo
7:00 am - 12:00 pmIDA-ONT
6h 00m1 stop
American Airlines Logo
4:47 pm - 10:36 pmONT-IDA
4h 49m1 stop
$391American Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 10
Multiple Airlines Logo
10:52 pm - 11:59 pmIDA-ONT
26h 07m2 stops
Multiple Airlines Logo
6:00 am - 4:12 pmONT-IDA
9h 12m1 stop
$449Multiple Airlines
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Fri, Dec 26 - Fri, Jan 2
United Airlines Logo
4:19 pm - 8:42 pmIDA-ONT
5h 23m1 stop
United Airlines Logo
1:34 pm - 9:12 pmONT-IDA
6h 38m1 stop
$470United Airlines
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Sat, Dec 13 - Mon, Dec 15

Alaska Airlines flights from Idaho Falls to Ontario

Our best Alaska Airlines deals on Idaho Falls to Ontario flight tickets
Alaska Airlines
Jan 13
IDA9:00 amIdaho Falls Fanning Field
12h 36m
1 stop
ONT8:36 pmOntario
Jan 21
ONT4:03 pmOntario
5h 56m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
$244
Find similar
Alaska Airlines
Dec 6
IDA6:05 amIdaho Falls Fanning Field
13h 28m
1 stop
ONT6:33 pmOntario
Jan 7
ONT11:53 amOntario
10h 06m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
$254
Find similar
Alaska Airlines
Dec 6
IDA6:05 amIdaho Falls Fanning Field
6h 14m
1 stop
ONT11:19 amOntario
Jan 11
ONT6:00 amOntario
15h 59m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
$264
Find similar

Delta flights from Idaho Falls to Ontario

Our best Delta deals on Idaho Falls to Ontario flight tickets
Delta
Mar 31
IDA6:45 pmIdaho Falls Fanning Field
6h 07m
1 stop
ONT11:52 pmOntario
Apr 2
ONT5:05 pmOntario
4h 16m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
$321
Find similar
Delta
Dec 10
IDA1:17 pmIdaho Falls Fanning Field
3h 52m
1 stop
ONT4:09 pmOntario
Dec 11
ONT6:00 amOntario
5h 37m
1 stop
IDA12:37 pmIdaho Falls Fanning Field
$329
Find similar
Delta
Dec 10
IDA1:17 pmIdaho Falls Fanning Field
10h 30m
2 stops
ONT10:47 pmOntario
Dec 11
ONT6:00 amOntario
5h 37m
1 stop
IDA12:37 pmIdaho Falls Fanning Field
$334
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 November 6, 2025.
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

Tue 1/13

9:00 am-8:36 pm

1 stop12h 36m

Ontario

Wed 1/21

4:03 pm-10:59 pm

1 stop5h 56m

$244

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 12/6

6:05 am-6:33 pm

1 stop13h 28m

Ontario

Wed 1/7

11:53 am-10:59 pm

1 stop10h 06m

$254

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 12/6

6:05 am-11:19 am

1 stop6h 14m

Ontario

Sun 1/11

6:00 am-10:59 pm

1 stop15h 59m

$264

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 12/10

7:00 am-12:00 pm

1 stop6h 00m

Ontario

Sat 12/13

4:47 pm-10:36 pm

1 stop4h 49m

$308

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Tue 3/31

6:45 pm-11:52 pm

1 stop6h 07m

Ontario

Thu 4/2

5:05 pm-10:21 pm

1 stop4h 16m

$321

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 12/10

1:17 pm-4:09 pm

1 stop3h 52m

Ontario

Thu 12/11

6:00 am-12:37 pm

1 stop5h 37m

$329

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 12/26

10:52 pm-4:31 pm

1 stop18h 39m

Ontario

Fri 1/2

6:00 am-4:12 pm

1 stop9h 12m

$366

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 12/10

7:00 am-12:00 pm

1 stop6h 00m

Ontario

Wed 12/10

4:47 pm-10:36 pm

1 stop4h 49m

$391

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 12/26

10:52 pm-11:59 pm

2 stops26h 07m

Ontario

Fri 1/2

6:00 am-4:12 pm

1 stop9h 12m

$449

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 12/13

4:19 pm-8:42 pm

1 stop5h 23m

Ontario

Mon 12/15

1:34 pm-9:12 pm

1 stop6h 38m

$470

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 day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $183. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Idaho Falls to Ontario for around $451.

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

In the morning is the cheapest time of day to fly from Idaho Falls to Ontario when you can find flight prices for as low as $136. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $679 on average. Flights to Ontario from Idaho Falls at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights

None
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 3h 52m.

  • 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
8,001 reviews
Search Delta 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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