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Cheap flights from Idaho Falls to Los Angeles from $129

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 9/28. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho Falls to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:33 pm - 3:49 pm
IDA
-
ONT
20h 16m
1 stop
Multiple Airlines Logo
11:15 am - 8:54 am
ONT
-
IDA
20h 39m
1 stop
$268Multiple Airlines
Mon, Aug 31 - Thu, Sep 3
Multiple Airlines Logo
8:33 pm - 10:04 am
IDA
-
ONT
14h 31m
2 stops
Multiple Airlines Logo
11:15 am - 8:54 am
ONT
-
IDA
20h 39m
1 stop
$287Multiple Airlines
Mon, Aug 31 - Thu, Sep 3
Multiple Airlines Logo
10:54 pm - 11:02 am
IDA
-
ONT
13h 08m
2 stops
Multiple Airlines Logo
11:15 am - 10:47 am
ONT
-
IDA
22h 32m
1 stop
$334Multiple Airlines
Fri, Aug 14 - Thu, Aug 20
Multiple Airlines Logo
10:54 pm - 3:14 pm
IDA
-
ONT
17h 20m
1 stop
Multiple Airlines Logo
11:15 am - 10:47 am
ONT
-
IDA
22h 32m
1 stop
$364Multiple Airlines
Fri, Aug 14 - Thu, Aug 20
Delta Logo
1:05 pm - 10:40 pm
IDA
-
ONT
10h 35m
2 stops
Delta Logo
5:15 pm - 10:22 pm
ONT
-
IDA
4h 07m
1 stop
$438Delta
Tue, Sep 22 - Sat, Sep 26
Delta Logo
6:45 pm - 11:48 pm
IDA
-
ONT
6h 03m
1 stop
Delta Logo
5:05 pm - 10:19 pm
ONT
-
IDA
4h 14m
1 stop
$464Delta
Mon, Dec 28 - Tue, Dec 29
United Airlines Logo
4:04 pm - 8:53 pm
IDA
-
ONT
5h 49m
1 stop
United Airlines Logo
5:00 am - 1:29 pm
ONT
-
IDA
7h 29m
1 stop
$464United Airlines
Sat, Sep 5 - Mon, Sep 7
Delta Logo
6:00 am - 8:52 am
IDA
-
ONT
3h 52m
1 stop
Delta Logo
9:43 am - 2:35 pm
ONT
-
IDA
3h 52m
1 stop
$476Delta
Wed, Aug 19 - Wed, Aug 26
United Airlines Logo
4:05 pm - 8:58 pm
IDA
-
ONT
5h 53m
1 stop
United Airlines Logo
5:00 am - 1:24 pm
ONT
-
IDA
7h 24m
1 stop
$513United Airlines
Sat, Sep 26 - Sat, Oct 3
United Airlines Logo
4:05 pm - 8:58 pm
IDA
-
ONT
5h 53m
1 stop
United Airlines Logo
5:00 am - 1:24 pm
ONT
-
IDA
7h 24m
1 stop
$513United Airlines
Sat, Sep 26 - Wed, Sep 30

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United Airlines flights from Idaho Falls to Ontario

Our best United Airlines deals on Idaho Falls to Ontario flight tickets
United Airlines
Sep 26
IDA4:05 pmIdaho Falls Fanning Field
5h 53m
1 stop
ONT8:58 pmOntario
Oct 3
ONT5:00 amOntario
7h 24m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
$513
United Airlines
Aug 16
IDA4:04 pmIdaho Falls Fanning Field
5h 49m
1 stop
ONT8:53 pmOntario
Aug 23
ONT5:00 amOntario
7h 29m
1 stop
IDA1:29 pmIdaho Falls Fanning Field
$555
United Airlines
Aug 13
IDA7:00 amIdaho Falls Fanning Field
6h 50m
1 stop
ONT12:50 pmOntario
Aug 20
ONT5:00 amOntario
11h 16m
1 stop
IDA5:16 pmIdaho Falls Fanning Field
$584

Alaska Airlines flights from Idaho Falls to Ontario

Our best Alaska Airlines deals on Idaho Falls to Ontario flight tickets
Alaska Airlines
Sep 23
IDA2:01 pmIdaho Falls Fanning Field
6h 02m
1 stop
ONT7:03 pmOntario
Sep 26
ONT7:12 amOntario
5h 12m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
$433
Alaska Airlines
Sep 16
IDA6:18 amIdaho Falls Fanning Field
5h 58m
1 stop
ONT11:16 amOntario
Sep 23
ONT6:02 amOntario
30h 22m
2 stops
IDA1:24 pmIdaho Falls Fanning Field
$438
Alaska Airlines
Sep 23
IDA2:01 pmIdaho Falls Fanning Field
6h 02m
1 stop
ONT7:03 pmOntario
Sep 26
ONT7:12 amOntario
5h 12m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
$443

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 July 30, 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

Cheapest round-trip

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 8/31

8:33 pm-3:49 pm

1 stop20h 16m

Ontario

Thu 9/3

11:15 am-8:54 am

1 stop20h 39m

$268

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 8/31

8:33 pm-10:04 am

2 stops14h 31m

Ontario

Thu 9/3

11:15 am-8:54 am

1 stop20h 39m

$287

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 8/14

10:54 pm-11:02 am

2 stops13h 08m

Ontario

Thu 8/20

11:15 am-10:47 am

1 stop22h 32m

$334

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 8/14

10:54 pm-3:14 pm

1 stop17h 20m

Ontario

Thu 8/20

11:15 am-10:47 am

1 stop22h 32m

$364

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Tue 9/22

1:05 pm-10:40 pm

2 stops10h 35m

Ontario

Sat 9/26

5:15 pm-10:22 pm

1 stop4h 07m

$438

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 12/28

6:45 pm-11:48 pm

1 stop6h 03m

Ontario

Tue 12/29

5:05 pm-10:19 pm

1 stop4h 14m

$464

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 9/5

4:04 pm-8:53 pm

1 stop5h 49m

Ontario

Mon 9/7

5:00 am-1:29 pm

1 stop7h 29m

$464
Quickest round-trip

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 8/19

6:00 am-8:52 am

1 stop3h 52m

Ontario

Wed 8/26

9:43 am-2:35 pm

1 stop3h 52m

$476

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 9/26

4:05 pm-8:58 pm

1 stop5h 53m

Ontario

Sat 10/3

5:00 am-1:24 pm

1 stop7h 24m

$513

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 9/26

4:05 pm-8:58 pm

1 stop5h 53m

Ontario

Wed 9/30

5:00 am-1:24 pm

1 stop7h 24m

$513

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 typical price of a round-trip flight between Idaho Falls and Ontario?

Prices are currently low for flights on this route.

Typical prices usually range from $386 to $744.
The lowest price recently found on this route was $268.

What is the cheapest month to fly to Ontario?

In general, July is the cheapest month to fly from Idaho Falls to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel during the month of July, then book flights to Ontario from Idaho Falls during April instead. Flights to Ontario in April, while not as cheap as those in July, still average around $161.

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

4h 02m

Direct flights

None
The fastest flight from Idaho Falls to Ontario takes 4h 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

Frequently asked questions about flying from Idaho Falls to Ontario

  • 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 4h 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
United AirlinesPriceFrom $143Free CancellationRating
7.4
10,046 reviews
Search United Airlines flights
DeltaPriceFrom $155Free CancellationRating
7.8
8,487 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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