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Cheap flights from Idaho Falls to Los Angeles from $90

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 5/15. 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

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
10:21 pm - 3:44 pm
IDA
-
ONT
18h 23m
1 stop
Multiple Airlines Logo
8:44 am - 3:27 pm
ONT
-
IDA
5h 43m
1 stop
$192Multiple Airlines
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
10:21 pm - 10:05 am
IDA
-
ONT
36h 44m
2 stops
Multiple Airlines Logo
8:44 am - 3:27 pm
ONT
-
IDA
5h 43m
1 stop
$226Multiple Airlines
Mon, May 11 - Mon, May 18
Alaska Airlines Logo
4:06 pm - 10:32 pm
IDA
-
ONT
7h 26m
1 stop
Alaska Airlines Logo
7:00 am - 1:17 pm
ONT
-
IDA
5h 17m
1 stop
$329Alaska Airlines
Wed, May 6 - Wed, May 20
Delta Logo
6:54 pm - 11:34 pm
IDA
-
ONT
5h 40m
1 stop
Delta Logo
4:57 pm - 10:42 pm
ONT
-
IDA
4h 45m
1 stop
$355Delta
Thu, May 7 - Wed, May 13
Delta Logo
6:54 pm - 11:34 pm
IDA
-
ONT
5h 40m
1 stop
Delta Logo
6:00 am - 10:43 am
ONT
-
IDA
3h 43m
1 stop
$361Delta
Wed, Jun 3 - Mon, Jun 8
Delta Logo
6:54 pm - 11:34 pm
IDA
-
ONT
5h 40m
1 stop
Delta Logo
6:00 am - 10:43 am
ONT
-
IDA
3h 43m
1 stop
$369Delta
Wed, Jun 3 - Mon, Jun 8
Alaska Airlines Logo
6:18 am - 11:16 am
IDA
-
ONT
5h 58m
1 stop
Alaska Airlines Logo
4:00 pm - 10:39 pm
ONT
-
IDA
5h 39m
1 stop
$381Alaska Airlines
Thu, Oct 1 - Mon, Oct 19
Alaska Airlines Logo
4:06 pm - 10:32 pm
IDA
-
ONT
7h 26m
1 stop
Alaska Airlines Logo
7:00 am - 1:17 pm
ONT
-
IDA
5h 17m
1 stop
$385Alaska Airlines
Wed, May 6 - Wed, May 20
Alaska Airlines Logo
4:06 pm - 11:48 pm
IDA
-
ONT
8h 42m
2 stops
Alaska Airlines Logo
6:00 am - 3:26 pm
ONT
-
IDA
8h 26m
1 stop
$391Alaska Airlines
Wed, May 6 - Wed, May 20
Delta Logo
6:54 pm - 11:34 pm
IDA
-
ONT
5h 40m
1 stop
Delta Logo
6:00 am - 10:43 am
ONT
-
IDA
3h 43m
1 stop
$393Delta
Wed, Jun 3 - Mon, Jun 8

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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
May 6
IDA4:06 pmIdaho Falls Fanning Field
7h 26m
1 stop
ONT10:32 pmOntario
May 20
ONT7:00 amOntario
5h 17m
1 stop
IDA1:17 pmIdaho Falls Fanning Field
$329
Alaska Airlines
Jun 6
IDA6:00 amIdaho Falls Fanning Field
6h 10m
1 stop
ONT11:10 amOntario
Jun 9
ONT4:03 pmOntario
5h 50m
1 stop
IDA10:53 pmIdaho Falls Fanning Field
$369
Alaska Airlines
Oct 1
IDA6:18 amIdaho Falls Fanning Field
5h 58m
1 stop
ONT11:16 amOntario
Oct 19
ONT4:00 pmOntario
5h 39m
1 stop
IDA10:39 pmIdaho Falls Fanning Field
$381

United Airlines flights from Idaho Falls to Ontario

Our best United Airlines deals on Idaho Falls to Ontario flight tickets
United Airlines
Apr 28
IDA6:45 amIdaho Falls Fanning Field
6h 53m
1 stop
ONT12:38 pmOntario
May 2
ONT5:00 amOntario
7h 25m
1 stop
IDA1:25 pmIdaho Falls Fanning Field
$564
United Airlines
Jun 19
IDA2:30 pmIdaho Falls Fanning Field
7h 12m
1 stop
ONT8:42 pmOntario
Jun 24
ONT5:00 amOntario
7h 25m
1 stop
IDA1:25 pmIdaho Falls Fanning Field
$566
United Airlines
Aug 10
IDA2:30 pmIdaho Falls Fanning Field
7h 12m
1 stop
ONT8:42 pmOntario
Aug 16
ONT5:00 amOntario
7h 24m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
$585

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 April 18, 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 5/11

10:21 pm-3:44 pm

1 stop18h 23m

Ontario

Mon 5/18

8:44 am-3:27 pm

1 stop5h 43m

$192

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Mon 5/11

10:21 pm-10:05 am

2 stops36h 44m

Ontario

Mon 5/18

8:44 am-3:27 pm

1 stop5h 43m

$226

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 5/6

4:06 pm-10:32 pm

1 stop7h 26m

Ontario

Wed 5/20

7:00 am-1:17 pm

1 stop5h 17m

$329

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Thu 5/7

6:54 pm-11:34 pm

1 stop5h 40m

Ontario

Wed 5/13

4:57 pm-10:42 pm

1 stop4h 45m

$355
Quickest round-trip

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 6/3

6:54 pm-11:34 pm

1 stop5h 40m

Ontario

Mon 6/8

6:00 am-10:43 am

1 stop3h 43m

$361

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 6/3

6:54 pm-11:34 pm

1 stop5h 40m

Ontario

Mon 6/8

6:00 am-10:43 am

1 stop3h 43m

$369

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Thu 10/1

6:18 am-11:16 am

1 stop5h 58m

Ontario

Mon 10/19

4:00 pm-10:39 pm

1 stop5h 39m

$381

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 5/6

4:06 pm-10:32 pm

1 stop7h 26m

Ontario

Wed 5/20

7:00 am-1:17 pm

1 stop5h 17m

$385

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 5/6

4:06 pm-11:48 pm

2 stops8h 42m

Ontario

Wed 5/20

6:00 am-3:26 pm

1 stop8h 26m

$391

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 6/3

6:54 pm-11:34 pm

1 stop5h 40m

Ontario

Mon 6/8

6:00 am-10:43 am

1 stop3h 43m

$393

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?

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

3h 47m

Direct flights

None
The fastest flight from Idaho Falls to Ontario takes 3h 47m
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 3h 47m.

  • 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
9,605 reviews
Search United Airlines flights
DeltaPriceFrom $155Free CancellationRating
7.9
8,424 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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