$121 Cheap Delta flights Ontario (ONT) to Sun Valley (SUN)

View $121 flight on Thu, Aug 14, 2025Opens in a new window

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$121 Cheap Delta flights Ontario (ONT) to Sun Valley (SUN)

Prices were available within the past 7 days and start at $121 for one-way flights and $241 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Aug 4 - Wed, Aug 13
ONT
Ontario
SUN
Sun Valley
$241 Roundtrip, just found
$241
Roundtrip
just found
Select Delta flight, departing Mon, Aug 4 from Ontario to Sun Valley, returning Wed, Aug 13, priced at $241 just found
Delta
Mon, Nov 3 - Fri, Nov 7
ONT
Ontario
SUN
Sun Valley
$243 Roundtrip, found 1 hour ago
$243
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Nov 3 from Ontario to Sun Valley, returning Fri, Nov 7, priced at $243 found 1 hour ago
Delta
Tue, Nov 4 - Wed, Nov 5
ONT
Ontario
SUN
Sun Valley
$246 Roundtrip, found 1 hour ago
$246
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Nov 4 from Ontario to Sun Valley, returning Wed, Nov 5, priced at $246 found 1 hour ago
Delta
Tue, Nov 18 - Thu, Nov 27
ONT
Ontario
SUN
Sun Valley
$254 Roundtrip, found 3 hours ago
$254
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Nov 18 from Ontario to Sun Valley, returning Thu, Nov 27, priced at $254 found 3 hours ago
Delta
Fri, Nov 21 - Wed, Nov 26
ONT
Ontario
SUN
Sun Valley
$268 Roundtrip, found 3 hours ago
$268
Roundtrip
found 3 hours ago
Select Delta flight, departing Fri, Nov 21 from Ontario to Sun Valley, returning Wed, Nov 26, priced at $268 found 3 hours ago
Delta
Sun, Aug 3 - Mon, Aug 4
ONT
Ontario
SUN
Sun Valley
$270 Roundtrip, just found
$270
Roundtrip
just found
Select Delta flight, departing Sun, Aug 3 from Ontario to Sun Valley, returning Mon, Aug 4, priced at $270 just found
Flights from Ontario (ONT) to Sun Valley (SUN)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Friedman Memorial
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Popular airline
United
Distance
676 mi

Frequently asked questions

How much is a Delta Air Lines flight from Los Angeles - Ontario Intl. Airport (ONT) to Friedman Memorial Airport (SUN)?
You'll discover cheap round-trip Delta Air Lines flights from $241 from ONT to SUN by sorting your results from "Price (lowest to highest)" on Expedia. Or look for deals from $121 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from ONT to SUN with Delta Air Lines?
Delta Air Lines flights to Sun Valley are often more affordable in the quieter months of November and April. Whether you're after a return or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from Los Angeles - Ontario Intl. Airport (ONT) to Friedman Memorial Airport (SUN) with Delta Air Lines?
For cheap Delta Air Lines fares from Los Angeles - Ontario Intl. Airport (ONT) to Friedman Memorial Airport (SUN), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the cost. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Los Angeles - Ontario Intl. Airport (ONT) to Friedman Memorial Airport (SUN)?
Use the "Nonstop" filter when searching for direct Delta Air Lines flights from ONT to SUN. It's also a great way to compare other carriers servicing the same direct route.
What is the earliest Delta Air Lines flight from ONT to SUN?
To find the earliest departures from ONT to SUN with Delta Air Lines, filter your results by "Early Morning" and "Morning." Choosing an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Sun Valley?
Delta Air Lines flights from Los Angeles - Ontario Intl. Airport (ONT) to Sun Valley touch down at Friedman Memorial Airport (SUN). This is the main entry point to this destination.
Why fly with Delta Air Lines from ONT to SUN?
Heading from ONT to SUN with Delta Air Lines means enjoying a host of perks, including a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to use on select future travel purchases. That's on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Los Angeles - Ontario Intl. Airport (ONT) to Friedman Memorial Airport (SUN)?
It's generally possible to change or cancel your flight, although additional fees may apply if your booking was made more than 24 hours ago. Want to keep your options open? Use our "No cancel fee" or "Changes included" filter to find flights that won't penalize you if you need to alter your plans. To modify your itinerary, head to "Trips," select your flight and click on "Manage Booking" for more information.

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*Available to One Key members.