Popular airlines from Salt Lake City International Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Salt Lake City to Ontario (SLC-ONT)

Prices were available within the past 7 days and start at $94 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Sep 6 - Sat, Sep 13
SLC
Salt Lake City
ONT
Ontario
$188 Roundtrip, just found
$188
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 6 from Salt Lake City to Ontario, returning Sat, Sep 13, priced at $188 just found
Frontier Airlines
Sat, Aug 9 - Sun, Aug 10
SLC
Salt Lake City
ONT
Ontario
$193 Roundtrip, just found
$193
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 9 from Salt Lake City to Ontario, returning Sun, Aug 10, priced at $193 just found
Frontier Airlines
Fri, Aug 8 - Sat, Aug 9
SLC
Salt Lake City
ONT
Ontario
$198 Roundtrip, just found
$198
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Aug 8 from Salt Lake City to Ontario, returning Sat, Aug 9, priced at $198 just found
Delta
Sat, Sep 6 - Sat, Sep 13
SLC
Salt Lake City
ONT
Ontario
$199 Roundtrip, just found
$199
Roundtrip
just found
Select Delta flight, departing Sat, Sep 6 from Salt Lake City to Ontario, returning Sat, Sep 13, priced at $199 just found
Southwest Airlines
Tue, Oct 14 - Sat, Oct 18
SLC
Salt Lake City
ONT
Ontario
$201 Roundtrip, found 5 hours ago
$201
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Tue, Oct 14 from Salt Lake City to Ontario, returning Sat, Oct 18, priced at $201 found 5 hours ago
Southwest Airlines
Sun, Nov 9 - Sat, Nov 15
SLC
Salt Lake City
ONT
Ontario
$201 Roundtrip, found 19 hours ago
$201
Roundtrip
found 19 hours ago
Select Southwest Airlines flight, departing Sun, Nov 9 from Salt Lake City to Ontario, returning Sat, Nov 15, priced at $201 found 19 hours ago
Southwest Airlines
Sat, Aug 23 - Sat, Aug 30
SLC
Salt Lake City
ONT
Ontario
$202 Roundtrip, found 1 day ago
$202
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Sat, Aug 23 from Salt Lake City to Ontario, returning Sat, Aug 30, priced at $202 found 1 day ago
Frontier Airlines
Tue, Sep 9 - Sat, Sep 13
SLC
Salt Lake City
ONT
Ontario
$204 Roundtrip, just found
$204
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Sep 9 from Salt Lake City to Ontario, returning Sat, Sep 13, priced at $204 just found
American Airlines
Sat, Sep 6 - Sat, Sep 13
SLC
Salt Lake City
ONT
Ontario
$219 Roundtrip, just found
$219
Roundtrip
just found
Select American Airlines flight, departing Sat, Sep 6 from Salt Lake City to Ontario, returning Sat, Sep 13, priced at $219 just found
United
Tue, Sep 9 - Sat, Sep 13
SLC
Salt Lake City
ONT
Ontario
$229 Roundtrip, just found
$229
Roundtrip
just found
Select United flight, departing Tue, Sep 9 from Salt Lake City to Ontario, returning Sat, Sep 13, priced at $229 just found

Find the cheapest month to fly from Salt Lake City (SLC) to Ontario (ONT)

October is typically the cheapest month to fly

From $63 - $268 per traveler.

Graph displaying average flight prices per month

Alternative airports near Ontario

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

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $134
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $134
Flights from Salt Lake City (SLC) to Ontario (ONT)
Origin airport
Salt Lake City Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$188
Distance
556 mi
Average flight time
1 hour 27 mins

Salt Lake City to Ontario Flights

The cheapest times to fly from Salt Lake City to Ontario

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 Salt Lake City to Ontario are during the month of September. You can find some of the cheapest flights from Salt Lake City to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Salt Lake City to Ontario

Sunday is one of the best days to book for cheap flights from Salt Lake City to Ontario: 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 Salt Lake City to Ontario

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 Salt Lake City to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $94 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 Salt Lake City to Ontario 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 Salt Lake City to Ontario 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.

 

Frequently asked questions

How much does a flight from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT) cost?
You can book cheap return tickets starting at $187 from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Delta flight leaving SLC on August 17 2025 and touching down at ONT. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SLC to ONT?
The cheapest flights from SLC to ONT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)?
When setting off from Salt Lake City Intl. Airport (SLC), you can take a direct flight to Los Angeles - Ontario Intl. Airport (ONT) with Delta Air Lines.
What is the cheapest airline that flies from SLC to ONT?
Right now, the cheapest carrier operating one-way flights from SLC to ONT is Delta. You can jet off on this route from $149. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SLC on October 12 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)?
Each day, an average of 3 nonstop flights operate from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT). Pick the departure time that works for you.
What are the most popular departure times for flights from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)?
More passengers fly between SLC and ONT at 11 AM than at any other point in the day. Looking to skip the crowds? Consider flying outside peak hours and it's possible you'll save on your ticket as well.
What day of the week has the most flights from SLC to ONT?
Fly on a Thursday if you're looking for the biggest selection of flights from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT).
What is the earliest flight from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)?
Take the earliest flight at around 11:30AM UTC-7, heading out of Salt Lake City Intl. Airport (SLC). You'll be in the air for around 1h 54m, coming in to land at Los Angeles - Ontario Intl. Airport (ONT) at approximately 12:24PM UTC-8.
How long does it take to fly from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)?
It takes around 1 hour and 55 minutes to travel the 560 mi from SLC to ONT.
What airline has the least delays from SLC to ONT?
Consider booking with Aeromexico if you'd like to fly straight from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT) without any delays. This airline has the best track record for punctuality, with an on-time score of 96%. Want to be notified if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)?
To land at Los Angeles - Ontario Intl. Airport (ONT) on time, select a flight that takes off from Salt Lake City Intl. Airport (SLC) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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.
What airports do you fly into for Ontario from Salt Lake City Intl. Airport (SLC)?
You can touch down at any of these Ontario airports after your direct flight from Salt Lake City Intl. Airport (SLC):

  • Los Angeles Intl. Airport (LAX)
  • John Wayne Airport (SNA)
  • Bob Hope Airport (BUR)
  • Los Angeles - Ontario Intl. Airport (ONT)
  • Long Beach Municipal Airport (LGB)

Is it cheaper to buy a plane ticket from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your flight from SLC to ONT shortly before your journey is typically more expensive. But if you're flexible with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a SLC to ONT flight and hotel package?
Compared with arranging hotels and flights separately, booking a SLC to ONT flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Salt Lake City Intl. Airport (SLC) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, you can cancel or modify your SLC to ONT flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more details, go to our Customer Service portal.

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Salt Lake City nearby Airports

Provo

Provo to Ontario
$210.37
*Available to One Key members.