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$70+ Cheap flights from Ontario (ONT) to Utah

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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SLC
Jun 25 — Jul 21
Thu 6/25
Thu 7/2
1 adult, Economy
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Cheap flight deals from Ontario to Utah

Cheapest flights from Ontario to Utah
Explore the most affordable flight options available from Ontario to Utah. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Tue 6/233:34 pm
ONT
-
SLC
1 stop17h 01m
Frontier
Tue 6/301:50 pm
SLC
-
ONT
1 stop26h 18m
Frontier
Deal found 5/24$143
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Wed 8/123:40 pm
ONT
-
SLC
1 stop16h 46m
Frontier
Wed 8/191:50 pm
SLC
-
ONT
1 stop6h 58m
Frontier
Deal found 5/24$168
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Wed 7/88:58 am
ONT
-
SLC
1 stop10h 08m
Frontier
Tue 7/141:47 pm
SLC
-
ONT
1 stop19h 16m
Frontier
Deal found 5/25$169
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Wed 6/241:33 pm
ONT
-
SLC
1 stop19h 02m
Frontier
Tue 6/301:50 pm
SLC
-
ONT
1 stop7h 01m
Frontier
Deal found 5/24$170
This Kiwi.com deal was found by Cheapflights users on 5/23. 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.
Wed 7/88:58 am
ONT
-
SLC
1 stop10h 08m
Frontier
Tue 7/211:47 pm
SLC
-
ONT
1 stop19h 16m
Frontier
Deal found 5/23$181
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 8/2011:43 am
ONT
-
SLC
1 stop20h 52m
Frontier
Tue 8/251:50 pm
SLC
-
ONT
1 stop6h 58m
Frontier
Deal found 5/25$192
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Wed 8/121:38 pm
ONT
-
SLC
1 stop18h 48m
Frontier
Thu 8/201:50 pm
SLC
-
ONT
1 stop6h 58m
Frontier
Deal found 5/24$214
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Sat 10/102:58 pm
ONT
-
SLC
1 stop5h 05m
Frontier
Tue 10/136:52 pm
SLC
-
ONT
1 stop6h 03m
Frontier
Deal found 5/25$215
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:00 am
ONT
-
SGU
1 stop3h 45m
Delta
Mon 6/298:50 am
SGU
-
ONT
1 stop4h 20m
Delta
Deal found 5/24$278
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:00 am
ONT
-
SGU
1 stop3h 45m
Delta
Wed 6/241:15 pm
SGU
-
ONT
2 stops10h 26m
Delta
Deal found 5/24$284
This American Airlines deal was found by Cheapflights users on 5/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:12 pm
ONT
-
SGU
1 stop4h 03m
American Airlines
Mon 6/85:30 pm
SGU
-
ONT
1 stop5h 27m
American Airlines
Deal found 5/21$338
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/41:00 pm
ONT
-
CDC
1 stop4h 17m
Delta
Wed 7/86:55 pm
CDC
-
ONT
1 stop5h 53m
Delta
Deal found 5/22$342

Find flight deals from Ontario to Utah

Keep the following information in mind while searching for Ontario to Utah flight deals. Data was last updated May 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$143
(Kiwi.com)

One-way from

$70
(Trip.com)

Popular in

April

Cheapest in

September

Average price

$214

Good round-trip deal

$328 or less

Good one-way deal

$160 or less
Provider with most accurate pricing for Los Angeles-Salt Lake City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Salt Lake City flights.
Search Deals
From Ontario to Utah
Search Deals
One-way flight from Ontario to Utah
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Utah.
Search Deals
Price to beat on a one-way flight from Ontario to Utah.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Utah 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 May 26, 2026.
Use the filters below to find and compare flights from Ontario to Utah that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSaint George

ONT - SGU

ONTSGU

Ontario

Tue 6/16

6:00 am-10:45 am

1 stop3h 45m

Saint George

Wed 6/24

1:15 pm-10:41 pm

2 stops10h 26m

$284

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Sat 7/25

6:00 am-8:48 am

Nonstop1h 48m

Salt Lake City

Sun 7/26

10:59 pm-11:48 pm

Nonstop1h 49m

$339

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Fri 8/14

9:43 am-12:31 pm

Nonstop1h 48m

Salt Lake City

Mon 8/24

10:45 pm-11:34 pm

Nonstop1h 49m

$339

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Tue 7/21

5:10 pm-8:03 pm

Nonstop1h 53m

Salt Lake City

Sun 7/26

8:00 am-8:47 am

Nonstop1h 47m

$339

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Sat 8/15

12:55 pm-3:43 pm

Nonstop1h 48m

Salt Lake City

Sun 8/16

10:45 pm-11:34 pm

Nonstop1h 49m

$339

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Thu 8/6

6:00 am-8:48 am

Nonstop1h 48m

Salt Lake City

Sun 8/9

5:31 pm-10:45 pm

1 stop6h 14m

$349

OntarioCedar City

ONT - CDC

ONTCDC

Ontario

Sat 7/4

1:00 pm-6:17 pm

1 stop4h 17m

Cedar City

Mon 7/6

6:53 pm-11:49 pm

1 stop5h 56m

$352

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Sun 8/2

4:50 pm-11:55 pm

2 stops6h 05m

Salt Lake City

Thu 8/6

4:10 pm-7:25 pm

1 stop4h 15m

$380

OntarioSaint George

ONT - SGU

ONTSGU

Ontario

Wed 8/19

5:00 am-1:15 pm

1 stop7h 15m

Saint George

Sat 8/22

1:50 pm-8:53 pm

1 stop8h 03m

$383

OntarioSalt Lake City

ONT - SLC

ONTSLC

Ontario

Sat 6/6

4:55 pm-12:10 am

2 stops6h 15m

Salt Lake City

Thu 6/11

7:00 pm-10:10 pm

1 stop4h 10m

$392

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/24

Showing 1-10 of 57 resultsSorted by cheapest first
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6

Best time to book a flight from Ontario to Utah

Have a flexible travel schedule? Discover the best time to fly to Utah 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 Utah

What is the cheapest month to book a flight from Ontario to Utah?

Currently, September is the cheapest month in which you can book a flight from Ontario to Utah (average of $58). Flying from Ontario to Utah in July is currently the most expensive (average of $174). 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 UT?

Find hourly flight availability from Ontario to Utah. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 26, 2026.

A simple way to save on the total cost of your ticket is to fly from Ontario to Utah in the evening. If you’re flexible enough to do this you can expect to save up to 73% on your trip compared to booking a flight at noon.

Weekly flight availability from Ontario to Utah

Explore weekly flight availability from Ontario to Utah. 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 May 26, 2026.

The most flights from ONT to USUT are scheduled on a Monday (13 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Ontario to Utah?

How far ahead should I book a flight from Ontario to Utah?

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Utah. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Utah

Get insights into the airlines that provide service to Utah. 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 Utah. Reviews last updated May 26, 2026.
Read through reviews of airlines operating flights from Ontario to Utah, such as Southwest,Delta, andAmerican Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,426 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.1
Good
11,629 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.7
Fair
2,933 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

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

  • What airport do you fly from for flights from Ontario to Utah?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Utah from Ontario.

  • How popular is this Ontario to Utah flight route?

    Within the past month, 4 users have taken a look at flights from Ontario to Utah.

  • How long is the flight from Ontario to Utah?

    A quick flight from Ontario to Utah can take about 3h 45m. Delta provides one of the quickest options available for as low as $284. The distance from Ontario to Utah is about 308 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Ontario to Utah one-way?

    One-way options have recently been found by users for as low as $69 on Frontier. Other airlines that offer cheap prices include Southwest from $109 and Delta from $148 one-way.

  • What are the most popular routes from Ontario to Utah?

    When deciding which route to take from Ontario to Utah consider Ontario - Salt Lake City, Ontario - Saint George or Ontario - Cedar City as they are the most popular.

  • What are the most reliable airlines from Ontario to Utah?

    Consider Aeromexico (97%), Air France (97%) or Korean Air (96%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Utah.

  • What are the cheapest flights from Ontario to Utah?

    Looking for the cheapest flight from Ontario to Utah? While on average our users pay $307, our data indicates the cheapest price to be $135. The most popular route (Ontario - Salt Lake City), is priced around $235.

  • Can I find deals for flights from Ontario to Utah that include hotel bookings?

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

  • How can I find direct flights from Ontario to Utah?

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

  • Can I find deals for business class flights from Ontario to Utah?

    Yes. Cheapflights offers flight deals from Ontario to Utah 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 Utah?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Utah (average of $58). Flying from Ontario to Utah in July is currently the most expensive (average of $174). 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.

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Alternative routes for Ontario to Utah

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Ontario to Utah

Discover the top 4 airlines that operate flights from Ontario to Utah. 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 May 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$177FlexibilityNo cancel feeOn-time62%
DeltaCheapest$199Average$380FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$224Average$337FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$238Average$306FlexibilityNo cancel feeOn-time71%

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