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$71+ Cheap flights from Ontario to Salt Lake City (ONT - SLC)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SLC
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Salt Lake City are usually found in January or September, booked 90 days in advance, depart on a Thursday or Saturday and return on a Sunday

Cheap flight deals from Ontario to Salt Lake City

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Salt Lake City (SLC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 19, 2025.

Round-trip from

$175
(Kiwi.com)

One-way from

$71
(Trip.com)

Popular in

April

Cheapest in

January

Average price

$239

Good round-trip deal

$246 or less

Good one-way deal

$188 or less
From Ontario to Salt Lake City
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One-way flight from Ontario to Salt Lake City
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Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Ontario to Salt Lake City.
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Price to beat on a one-way flight from Ontario to Salt Lake City.
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Find flight deals from Ontario to Salt Lake City

Cheapest flights from Ontario to Salt Lake City
Explore the most affordable flight options available from Ontario to Salt Lake City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:16 amONT - SLC
1 stop8h 24mMultiple Airlines
Sun 9/219:09 pmSLC - ONT
2 stops17h 51mMultiple Airlines
Deal found 8/18$175
This CheapOair deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2410:13 pmONT - SLC
1 stop11h 39mFrontier
Thu 8/2811:47 amSLC - ONT
1 stop12h 53mFrontier
Deal found 8/18$178
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:00 amONT - SLC
1 stop3h 52mFrontier
Mon 9/294:02 pmSLC - ONT
1 stop4h 52mFrontier
Deal found 8/19$180
This CheapOair deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2012:59 amONT - SLC
1 stop8h 00mFrontier
Mon 8/259:11 pmSLC - ONT
1 stop20h 07mFrontier
Deal found 8/18$181
This CheapOair deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/216:00 amONT - SLC
1 stop3h 52mFrontier
Tue 8/268:00 amSLC - ONT
1 stop16h 50mFrontier
Deal found 8/18$182
This CheapOair deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:59 amONT - SLC
1 stop8h 00mFrontier
Sun 8/313:54 pmSLC - ONT
1 stop8h 56mFrontier
Deal found 8/19$183
This CheapOair deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2212:59 amONT - SLC
1 stop20h 25mFrontier
Wed 8/2712:52 pmSLC - ONT
1 stop20h 53mFrontier
Deal found 8/18$184
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:00 amONT - SLC
1 stop3h 52mFrontier
Wed 9/312:52 pmSLC - ONT
1 stop11h 58mFrontier
Deal found 8/17$185
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/112:59 amONT - SLC
1 stop9h 53mFrontier
Fri 9/121:25 pmSLC - ONT
2 stops11h 13mFrontier
Deal found 8/17$186
This CheapOair deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/226:00 amONT - SLC
1 stop3h 52mFrontier
Sun 8/248:02 pmSLC - ONT
1 stop16h 49mFrontier
Deal found 8/16$187
This CheapOair deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1712:59 amONT - SLC
1 stop6h 33mFrontier
Mon 8/259:11 pmSLC - ONT
1 stop20h 07mFrontier
Deal found 8/17$188
This CheapOair deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1912:59 amONT - SLC
1 stop20h 25mFrontier
Fri 8/229:11 pmSLC - ONT
1 stop20h 00mFrontier
Deal found 8/16$189

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Salt Lake City 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, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2025.
Use the filters below to find and compare flights from Ontario to Salt Lake City that are best for you.

Fly from

Ontario

Fly to

Salt Lake City

Route

Depart

Return

Price

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Thu 9/18

9:16 am-6:40 pm

1 stop8h 24m

Salt Lake City

Sun 9/21

9:09 pm-2:00 pm

2 stops17h 51m

$175

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Sat 10/25

8:00 am-2:22 pm

1 stop5h 22m

Salt Lake City

Sun 10/26

9:59 pm-10:05 pm

2 stops25h 06m

$175

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Fri 9/26

6:00 am-10:52 am

1 stop3h 52m

Salt Lake City

Mon 9/29

4:02 pm-7:54 pm

1 stop4h 52m

$180

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Thu 9/25

9:16 am-6:40 pm

1 stop8h 24m

Salt Lake City

Sun 9/28

9:09 pm-8:56 pm

2 stops24h 47m

$185

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Thu 10/2

7:30 pm-8:34 am

1 stop12h 04m

Salt Lake City

Sun 10/5

9:59 pm-8:56 pm

2 stops23h 57m

$185

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Tue 9/30

8:00 am-10:26 pm

2 stops13h 26m

Salt Lake City

Thu 10/2

4:10 pm-8:56 pm

1 stop5h 46m

$186

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Thu 9/25

7:30 pm-7:32 am

2 stops11h 02m

Salt Lake City

Wed 10/1

6:05 pm-9:56 pm

1 stop4h 51m

$186

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Fri 9/12

8:59 pm-3:37 pm

2 stops17h 38m

Salt Lake City

Sun 9/14

9:45 pm-7:53 am

1 stop11h 08m

$186

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Mon 9/29

6:00 am-10:42 am

1 stop3h 42m

Salt Lake City

Wed 10/1

1:42 pm-8:26 am

2 stops19h 44m

$186

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Mon 10/6

10:28 pm-11:35 am

2 stops12h 07m

Salt Lake City

Fri 10/10

3:43 pm-12:07 am

1 stop9h 24m

$186

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 22 results
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The best insider tips for Ontario to Salt Lake City flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Ontario to Salt Lake City trip
Airports
ONT

ONT's TSA security is smoother and quicker than LAX, making it ideal for weekday business travelers. Plan ahead for a stress-free departure.

Read more about ONTby Bill Fink
SLC

Use the TRAX light rail for quick access to downtown Salt Lake City from SLC airport. It's efficient and convenient for arrivals.

Read more about SLCby Ramsey Qubein
Our travel experts
Bill Fink

Bill Fink

Expert on ONT

Bill Fink

Bill Fink

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on SLC

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Ontario to Salt Lake City

Have a flexible travel schedule? Discover the best time to fly to Salt Lake City from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Salt Lake City

How far ahead should I book a flight from Ontario to Salt Lake City?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Salt Lake City. Price data was last updated on August 8, 2025.

The price you pay for your flight from Ontario to Salt Lake City may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Ontario to Salt Lake City?

Currently, October is the cheapest month in which you can book a flight from Ontario to Salt Lake City (average of $277). Flying from Ontario to Salt Lake City in March is currently the most expensive (average of $417). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to SLC?

Find hourly flight availability from Ontario to Salt Lake City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 19, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 8% on flights from Ontario to Salt Lake City by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Ontario to Salt Lake City?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Salt Lake City. Price data was last updated on August 17, 2025.

Travelers seeking maximum savings on their Ontario to Salt Lake City flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Ontario to Salt Lake City

Explore weekly flight availability from Ontario to Salt Lake City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 19, 2025.

The most flights from ONT to SLC are scheduled on a Friday (12 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (9 on average).

What’s the top layover airport for flights from Ontario to Salt Lake City?

Share of 1-stop round-trip flights from Ontario to Salt Lake City chosen by Cheapflights users in the past 12 months, using the same layover each way.

Denver (DEN) – chosen by Cheapflights users on 40% of 1-stop itineraries from Ontario to Salt Lake City on Cheapflights.

What’s the cheapest layover airport for flights from Ontario to Salt Lake City?

Average round-trip fare for 1-stop flights from Ontario to Salt Lake City, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $238.

What’s the fastest layover option from Ontario to Salt Lake City?

Shortest average travel time for 1-stop one-way flights from Ontario to Salt Lake City, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 3h 45m.

Which airport typically offers the quickest layover for flights from Ontario to Salt Lake City?

Average layover duration for 1-stop one-way flights from Ontario to Salt Lake City, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 0h 53m.

Reviews of airlines servicing Salt Lake City

Get insights into the airlines that provide service to Salt Lake City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Salt Lake City. Reviews last updated August 19, 2025.
Read reviews from past customers who have flown Southwest, Delta, and American Airlines from Ontario to Salt Lake City. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,211 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Salt Lake City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Ontario to Salt Lake City?

    Salt Lake City is the airport most travelers will use when flying to Salt Lake City from Ontario. Booking flights from Ontario (ONT) to Salt Lake City (SLC) should be relatively easy as there are 10 daily flights to Salt Lake City from 4 different airlines. 1h 43m is how long a flight from Ontario to Salt Lake City will take if you book a nonstop flight.

  • How popular is this Ontario to Salt Lake City flight route?

    This flight path from Ontario to Salt Lake City was viewed by 7 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Ontario to Salt Lake City?

    Departing from Ontario to Salt Lake City will take you 3h 52m. The distance from Ontario to Salt Lake City is about 557 mi.

  • What are the cheapest airlines flying from Ontario to Salt Lake City round-trip?

    According to our current data, Frontier ($69), Delta ($199), and Southwest ($202) offers the cheapest pricing from Ontario to Salt Lake City. Users have found that Frontier is 74% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Ontario to Salt Lake City?

    Consider Air France (99%), SkyWest Airlines (96%) or Aeromexico (96%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Salt Lake City.

  • What are the cheapest flights from Ontario to Salt Lake City?

    On average you can expect to pay $683 for a flight from Ontario to Salt Lake City. The cheapest flight overall is $138 while the most popular route, (Ontario - Salt Lake City) is currently priced at $143.

  • Can I find deals for flights from Ontario to Salt Lake City that include hotel bookings?

    Yes. In addition to deals on Ontario to Salt Lake City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Salt Lake City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Salt Lake City.

  • Can I find deals for business class flights from Ontario to Salt Lake City?

    Yes. Cheapflights offers flight deals from Ontario to Salt Lake City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Salt Lake City?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Salt Lake City (average of $277). Flying from Ontario to Salt Lake City in March is currently the most expensive (average of $417). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Salt Lake City?

Book flights to Salt Lake City if you plan to visit one of these locations
Bountiful
Midvale
Lehi
Layton
Farmington
Logan
West Valley City
Evanston
West Jordan
South Jordan
Draper
Sandy

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Top 4 airlines flying from Ontario to Salt Lake City

Discover the top 4 airlines that operate flights from Ontario to Salt Lake City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$172FlexibilityNo cancel feeOn-time62%
DeltaCheapest$199Average$307FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$202Average$309FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$226Average$322FlexibilityNo cancel feeOn-time71%

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