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Cheap flights from Idaho Falls to Los Angeles from $152

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 7/10. 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.
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
$319Delta
Fri, Nov 13 - Mon, Nov 16
Delta Logo
1:10 pm - 10:43 pm
IDA
-
ONT
10h 33m
2 stops
Delta Logo
5:05 pm - 10:19 pm
ONT
-
IDA
4h 14m
1 stop
$324Delta
Sat, Nov 14 - Sun, Nov 15
Alaska Airlines Logo
4:14 pm - 11:51 pm
IDA
-
ONT
8h 37m
1 stop
Alaska Airlines Logo
5:32 pm - 1:06 pm
ONT
-
IDA
18h 34m
1 stop
$329Alaska Airlines
Wed, Jul 1 - Sat, Jul 4
Alaska Airlines Logo
7:15 am - 1:09 pm
IDA
-
ONT
6h 54m
1 stop
Alaska Airlines Logo
7:00 am - 1:06 pm
ONT
-
IDA
5h 06m
1 stop
$339Alaska Airlines
Thu, Jun 25 - Sun, Jun 28
Alaska Airlines Logo
6:18 am - 11:16 am
IDA
-
ONT
5h 58m
1 stop
Alaska Airlines Logo
3:14 pm - 10:56 pm
ONT
-
IDA
6h 42m
1 stop
$358Alaska Airlines
Tue, Sep 22 - Tue, Sep 22
Alaska Airlines Logo
3:57 pm - 8:24 pm
IDA
-
ONT
5h 27m
1 stop
Alaska Airlines Logo
2:14 pm - 10:54 pm
ONT
-
IDA
7h 40m
1 stop
$364Alaska Airlines
Fri, Oct 2 - Mon, Oct 5
Multiple Airlines Logo
10:54 pm - 3:14 pm
IDA
-
ONT
17h 20m
1 stop
Multiple Airlines Logo
11:47 am - 10:04 pm
ONT
-
IDA
9h 17m
2 stops
$369Multiple Airlines
Fri, Aug 14 - Mon, Aug 17
Delta Logo
7:00 pm - 10:23 pm
IDA
-
ONT
4h 23m
1 stop
Delta Logo
1:00 pm - 6:18 pm
ONT
-
IDA
4h 18m
1 stop
$374Delta
Sat, Jul 18 - Thu, Jul 23
Alaska Airlines Logo
4:14 pm - 11:51 pm
IDA
-
ONT
8h 37m
1 stop
Alaska Airlines Logo
5:32 pm - 1:06 pm
ONT
-
IDA
18h 34m
1 stop
$384Alaska Airlines
Mon, Jun 29 - Fri, Jul 3
American Airlines Logo
7:15 am - 12:03 pm
IDA
-
ONT
5h 48m
1 stop
American Airlines Logo
4:47 pm - 10:34 pm
ONT
-
IDA
4h 47m
1 stop
$399American Airlines
Sat, Nov 14 - Sat, Nov 14

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Alaska Airlines flights from Idaho Falls to Ontario

Our best Alaska Airlines deals on Idaho Falls to Ontario flight tickets
Alaska Airlines
Jul 1
IDA4:14 pmIdaho Falls Fanning Field
8h 37m
1 stop
ONT11:51 pmOntario
Jul 4
ONT5:32 pmOntario
18h 34m
1 stop
IDA1:06 pmIdaho Falls Fanning Field
$329
Alaska Airlines
Jun 25
IDA7:15 amIdaho Falls Fanning Field
6h 54m
1 stop
ONT1:09 pmOntario
Jun 28
ONT7:00 amOntario
5h 06m
1 stop
IDA1:06 pmIdaho Falls Fanning Field
$339
Alaska Airlines
Sep 22
IDA6:18 amIdaho Falls Fanning Field
5h 58m
1 stop
ONT11:16 amOntario
Sep 22
ONT3:14 pmOntario
6h 42m
1 stop
IDA10:56 pmIdaho Falls Fanning Field
$358

United Airlines flights from Idaho Falls to Ontario

Our best United Airlines deals on Idaho Falls to Ontario flight tickets
United Airlines
Aug 15
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
$439
United Airlines
Aug 17
IDA4:04 pmIdaho Falls Fanning Field
5h 49m
1 stop
ONT8:53 pmOntario
Aug 20
ONT5:00 amOntario
7h 29m
1 stop
IDA1:29 pmIdaho Falls Fanning Field
$484
United Airlines
Aug 16
IDA4:04 pmIdaho Falls Fanning Field
5h 49m
1 stop
ONT8:53 pmOntario
Aug 22
ONT5:00 amOntario
7h 29m
1 stop
IDA1:29 pmIdaho Falls Fanning Field
$487

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 June 13, 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

Fri 11/13

6:45 pm-11:48 pm

1 stop6h 03m

Ontario

Mon 11/16

5:05 pm-10:19 pm

1 stop4h 14m

$319

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 11/14

1:10 pm-10:43 pm

2 stops10h 33m

Ontario

Sun 11/15

5:05 pm-10:19 pm

1 stop4h 14m

$324

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 7/1

4:14 pm-11:51 pm

1 stop8h 37m

Ontario

Sat 7/4

5:32 pm-1:06 pm

1 stop18h 34m

$329

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Thu 6/25

7:15 am-1:09 pm

1 stop6h 54m

Ontario

Sun 6/28

7:00 am-1:06 pm

1 stop5h 06m

$339

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Tue 9/22

6:18 am-11:16 am

1 stop5h 58m

Ontario

Tue 9/22

3:14 pm-10:56 pm

1 stop6h 42m

$358

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 10/2

3:57 pm-8:24 pm

1 stop5h 27m

Ontario

Mon 10/5

2:14 pm-10:54 pm

1 stop7h 40m

$364

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Fri 8/14

10:54 pm-3:14 pm

1 stop17h 20m

Ontario

Mon 8/17

11:47 am-10:04 pm

2 stops9h 17m

$369
Quickest round-trip

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 7/18

7:00 pm-10:23 pm

1 stop4h 23m

Ontario

Thu 7/23

1:00 pm-6:18 pm

1 stop4h 18m

$374

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 6/29

4:14 pm-11:51 pm

1 stop8h 37m

Ontario

Fri 7/3

5:32 pm-1:06 pm

1 stop18h 34m

$384

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Sat 11/14

7:15 am-12:03 pm

1 stop5h 48m

Ontario

Sat 11/14

4:47 pm-10:34 pm

1 stop4h 47m

$399

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?

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 23m

Direct flights

None
The fastest flight from Idaho Falls to Ontario takes 4h 23m
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 23m.

  • 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
9,815 reviews
Search United Airlines flights
DeltaPriceFrom $155Free CancellationRating
7.9
8,406 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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