$102 Cheap United flights Ontario (ONT) to Salt Lake City (SLC)

You’ll discover affordable round-trip United Airlines flights from $203 from ONT to SLC by filtering your results from “Price (lowest to highest)” on Expedia. Or search for deals from $102 for a one-way journey.**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.

Browse for return or one-way flights to Salt Lake City in November or January. You could find a cheap fare with United Airlines during these off-season months.

Start searching one to three months before your departure to get cheap fares on United Airlines flights from Los Angeles - Ontario Intl. Airport (ONT) to Salt Lake City Intl. Airport (SLC). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*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.

Fill in your dates, click search and select “Nonstop” on Expedia to find any direct flights from ONT to SLC with United Airlines or another airline.

Search United Airlines’s earliest flights from ONT to SLC by checking the “Early Morning” and “Morning” filters. Not only will you arrive sooner, early departures are also 20% less likely to be canceled.**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.

United Airlines flights from Los Angeles - Ontario Intl. Airport (ONT) to Salt Lake City come in to Salt Lake City Intl. Airport (SLC). This is the main gateway to this city.

A rewarding loyalty program and the ability to rack up points through United Mileage Plus are the start of the reasons to depart from ONT to SLC with United Airlines. Plus, by joining Expedia’s free One Key™ program, you can earn OneKeyCash™* in addition to United Airlines’s loyalty program earnings. It’s yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s usually possible to cancel or change your flight, although there may be additional charges if you booked over 24 hours ago. Prefer to keep your options open? Make use of our “No cancel fee” or “Changes included” filter to find flights that won’t penalize you if you need to revise your plans. To make changes, head to “Trips,” select your flight and click on “Manage Booking” for further information.