$303 Cheap Flights from Ontario (ONT) to Twin Falls (TWF)

View $303 flight on Tue, Dec 2, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls, ID (TWF)

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Cheap Flights from Ontario to Twin Falls (ONT-TWF)

Prices were available within the past 7 days and start at $303 for one-way flights and $362 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Feb 17 - Tue, Feb 24
ONT
Ontario
TWF
Twin Falls
$362 Roundtrip, found 6 days ago
$362
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Feb 17 from Ontario to Twin Falls, returning Tue, Feb 24, priced at $362 found 6 days ago
Delta
Sun, Dec 21 - Tue, Jan 6
ONT
Ontario
TWF
Twin Falls
$372 Roundtrip, found 3 days ago
$372
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Dec 21 from Ontario to Twin Falls, returning Tue, Jan 6, priced at $372 found 3 days ago
Delta
Thu, Jan 22 - Sun, Feb 8
ONT
Ontario
TWF
Twin Falls
$382 Roundtrip, found 3 days ago
$382
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Jan 22 from Ontario to Twin Falls, returning Sun, Feb 8, priced at $382 found 3 days ago
Delta
Tue, Dec 16 - Sun, Dec 21
ONT
Ontario
TWF
Twin Falls
$396 Roundtrip, found 2 days ago
$396
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Dec 16 from Ontario to Twin Falls, returning Sun, Dec 21, priced at $396 found 2 days ago
Delta
Mon, Dec 22 - Tue, Jan 6
ONT
Ontario
TWF
Twin Falls
$402 Roundtrip, found 3 days ago
$402
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Dec 22 from Ontario to Twin Falls, returning Tue, Jan 6, priced at $402 found 3 days ago
Delta
Mon, Dec 15 - Sun, Dec 21
ONT
Ontario
TWF
Twin Falls
$406 Roundtrip, found 2 days ago
$406
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Dec 15 from Ontario to Twin Falls, returning Sun, Dec 21, priced at $406 found 2 days ago
Delta
Mon, Dec 22 - Sun, Jan 11
ONT
Ontario
TWF
Twin Falls
$412 Roundtrip, found 3 days ago
$412
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Dec 22 from Ontario to Twin Falls, returning Sun, Jan 11, priced at $412 found 3 days ago
Delta
Tue, Dec 16 - Sat, Jan 3
ONT
Ontario
TWF
Twin Falls
$422 Roundtrip, found 2 days ago
$422
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Dec 16 from Ontario to Twin Falls, returning Sat, Jan 3, priced at $422 found 2 days ago
Delta
Tue, Dec 30 - Tue, Jan 13
ONT
Ontario
TWF
Twin Falls
$428 Roundtrip, found 3 days ago
$428
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 30 from Ontario to Twin Falls, returning Tue, Jan 13, priced at $428 found 3 days ago
Delta
Mon, Dec 15 - Sat, Jan 3
ONT
Ontario
TWF
Twin Falls
$432 Roundtrip, found 2 days ago
$432
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Dec 15 from Ontario to Twin Falls, returning Sat, Jan 3, priced at $432 found 2 days ago

Find the cheapest month to fly from Ontario (ONT) to Twin Falls (TWF)

September is typically the cheapest month to fly

From $346 - $866 per traveler.

Alternative airports near Twin Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Twin Falls, ID TWF. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $458
TWF
Twin Falls, ID
CheapestClosest
Average driving time to city center11 min
Flights from $458

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF) cost?
Secure a cheap one-way flight from $303 or cheap return flight from $362 from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF)?
February is the least expensive month to fly from ONT to TWF. Timing your trip outside of the busy season is often the key to scoring lower fares.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from ONT to TWF. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF)?
Nonstop flights from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ONT to TWF?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF)?
To land at Twin Falls Airport (TWF) on time, select a flight that leaves from Los Angeles - Ontario Intl. Airport (ONT) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF) last-minute?
Booking your flight from ONT to TWF just before your journey is generally more expensive. However, if there's some wiggle room with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book an ONT to TWF flight and hotel package?
You'll typically save money by securing an ONT to TWF flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After choosing your ideal accommodations and flights, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Twin Falls Airport (TWF)?
If you reserved your ONT to TWF flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Twin Falls
Airlines serving
Delta
Roundtrip price
$361
Distance
605 mi

Book with confidence

Ontario to Twin Falls Flights

The cheapest times to fly from Ontario to Twin Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Twin Falls are during the month of February. You can find some of the cheapest flights from Ontario to Twin Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Twin Falls

Sunday is one of the best days to book for cheap flights from Ontario to Twin Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Twin Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Twin Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $303 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Twin Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Twin Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ontario to Twin Falls Flights

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*Available to One Key members.