SLC - ONT

$57 Find Cheap Flights from Salt Lake City to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Salt Lake City to Ontario departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Salt Lake City to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Salt Lake City to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$134
Typical prices: $426-$208
Frontier
Tue 9/22Tue 9/29
SLC - ONT • 1 stop
Cheapest non-stop
$339
Typical prices: $374-$239
Delta
Wed 7/29Sat 8/1
SLC - ONT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Frontier Economy Bundle adds a carry-on and seat choice for budget-friendly value.
Delta offers free Wi-Fi for SkyMiles members on domestic flights from Salt Lake City.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Delta. Average duration is 1h 51m
Direct flights
Direct flights
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+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Salt Lake City to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Salt Lake City to Ontario

Tue, Sep 22 - Tue, Sep 29
Frontier Logo
2:51 pm - 8:54 pm
SLC
-
ONT
7h 03m
1 stop
Frontier Logo
9:49 pm - 1:56 pm
ONT
-
SLC
15h 07m
1 stop
$134Frontier
Wed, Jul 1 - Wed, Jul 8
Frontier Logo
1:50 pm - 7:51 pm
SLC
-
ONT
7h 01m
1 stop
Frontier Logo
8:58 am - 8:06 pm
ONT
-
SLC
10h 08m
1 stop
$139Frontier
Tue, Sep 8 - Tue, Sep 15
Frontier Logo
10:41 pm - 1:57 pm
SLC
-
ONT
16h 16m
1 stop
Frontier Logo
6:00 am - 8:33 pm
ONT
-
SLC
13h 33m
1 stop
$143Frontier
Wed, Jul 1 - Wed, Jul 8
Frontier Logo
1:50 pm - 7:51 pm
SLC
-
ONT
7h 01m
1 stop
Frontier Logo
8:58 am - 8:06 pm
ONT
-
SLC
10h 08m
1 stop
$150Frontier
Fri, Aug 14 - Mon, Aug 17
Frontier Logo
5:02 pm - 11:02 am
SLC
-
ONT
19h 00m
1 stop
Frontier Logo
3:40 pm - 9:35 am
ONT
-
SLC
16h 55m
1 stop
$166Frontier
Sat, Aug 1 - Sat, Aug 8
Frontier Logo
1:47 pm - 8:03 am
SLC
-
ONT
19h 16m
1 stop
Frontier Logo
11:47 am - 9:26 am
ONT
-
SLC
20h 39m
1 stop
$170Frontier
Tue, Sep 22 - Tue, Sep 29
Frontier Logo
2:51 pm - 8:54 pm
SLC
-
ONT
7h 03m
1 stop
Frontier Logo
6:00 am - 12:24 am
ONT
-
SLC
17h 24m
1 stop
$179Frontier
Wed, Jul 1 - Wed, Jul 8
Frontier Logo
1:50 pm - 7:51 pm
SLC
-
ONT
7h 01m
1 stop
Frontier Logo
6:00 am - 2:55 pm
ONT
-
SLC
7h 55m
1 stop
$186Frontier
Wed, Jul 22 - Tue, Jul 28
Frontier Logo
1:47 pm - 8:03 am
SLC
-
ONT
19h 16m
1 stop
Frontier Logo
1:38 pm - 9:26 am
ONT
-
SLC
18h 48m
1 stop
$187Frontier
Tue, Sep 8 - Tue, Sep 15
Frontier Logo
10:41 pm - 1:57 pm
SLC
-
ONT
16h 16m
1 stop
Frontier Logo
2:58 pm - 10:20 am
ONT
-
SLC
18h 22m
2 stops
$188Frontier
Booking Insights

KAYAK's insights & trends for Salt Lake City to Ontario flights

Get data-powered insights and trends into flights from Salt Lake City to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Salt Lake City to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Salt Lake City to Ontario departing in September.

What’s the cheapest day of the week to fly from Salt Lake City to Ontario?

The average price of all round-trip flights from Salt Lake City to Ontario clicked on KAYAK for each day over the last 12 months.

For Salt Lake City to Ontario, Thursday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Ontario back to Salt Lake City, the best deals are generally found on Thursday, with Monday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Salt Lake City to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Salt Lake City to Ontario is February, where tickets cost $220 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $339 and $339 respectively.

Can I save money by flying with a layover from Salt Lake City to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $339, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Salt Lake City to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Salt Lake City to Ontario, you should book around 3 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Expert advice

Expert advice for your flight from Salt Lake City to Ontario

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Delta and Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Harriet Baskas

Harriet Baskas

Expert on SLC

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonApril
Cheapest flight$59
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Salt Lake City to Ontario

When to book flights from Salt Lake City to Ontario

Are your dates flexible? Find out the best times to travel from Salt Lake City to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Salt Lake City to Ontario

  • Delta Airlines, which has regular direct flights from Salt Lake City to Ontario, offers a selection of special meals onboard for travelers with special dietary needs. They include low-sodium, diabetic, gluten-free, kosher, vegetarian, vegan, and infant meals. You should make your meal request when booking your flight or contact the airline at least 72 hours in advance for availability.

    Travelers with reduced mobility flying through Salt Lake City International Airport (SLC) can access different services and amenities, including accessible restrooms, wheelchairs with attendants, boarding assistance, and elevators. The airport is also part of the Hidden Disabilities Sunflower for travelers with hidden disabilities.

  • How do I get to downtown Ontario from Ontario International Airport?

    You can take the OmniTrans Bus Route 61 to downtown Ontario and other parts of the city. The journey time is around 25 minutes. Several Southern California bus and rail providers offer connections from the airport to downtown California. Other options include shared ride shuttles, car rentals, taxis, and hotel shuttles.

  • Which airlines fly Business Class from Salt Lake City to Ontario?

    Consider booking Delta Airlines, United Airlines, American Airlines, and Alaska Airlines for Business Class flights from Salt Lake City to Ontario. Flying Business Class on these airlines offers several benefits, including dedicated service, priority service, onboard dining, comfortable seating, special baggage allowance, and access to specific lounges.

  • What lounges are available at Salt Lake City International Airport (SLC)?

    Salt Lake City International Airport (SLC) airport has one lounge available for travelers; the Delta Sky Club at Concourse A, Level 2. The lounge, accessible through lounge membership programs, features comfortable seating, complimentary food and snacks, free Wi-Fi, shower areas, sleeping areas, flight monitors, magazines, and newspapers.

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

    In the last 5 days, the lowest price for a flight from Salt Lake City to Ontario was $59 for a one-way ticket and $134 for a round-trip.

  • Do I need a passport to fly between Salt Lake City and Ontario?

    No, a passport isn't needed to fly from Salt Lake City to Ontario. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Salt Lake City to Ontario?

    Delta, Alaska Airlines, American Airlines, and JetBlue offer inflight Wi-Fi service on the Salt Lake City to Ontario flight route.

  • Which aircraft models fly most regularly from Salt Lake City to Ontario?

    The Airbus A319 is the aircraft model that flies most regularly on the Salt Lake City to Ontario flight route.

  • Which airline alliances offer flights from Salt Lake City to Ontario?

    SkyTeam is the only airline alliance operating flights between Salt Lake City and Ontario.

  • On which days can I fly direct from Salt Lake City to Ontario?

    There are nonstop flights from Salt Lake City to Ontario on a daily basis.

  • Which is the best airline for flights from Salt Lake City to Ontario, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Salt Lake City to Ontario are Southwest and Delta. With an average price for the route of $275 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $342 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Salt Lake City to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Salt Lake City to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Salt Lake City to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Salt Lake City is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Salt Lake City to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Salt Lake City with another airline. Booking your flights between Salt Lake City and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Salt Lake City to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Salt Lake City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Salt Lake City to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $339 or less round-trip.
  • In which other cities can I fly to from Tokyo?
  • From Tokyo, you can extend your trip to domestic destinations like Osaka, Sapporo, Fukuoka, Nagoya, Hiroshima, Niigata, Kumamoto, Toyama, Oita, Okinawa, Sendai, and Matsuyama or international destinations like Sydney, Bangkok, Kuala Lumpur, Beijing, Shanghai, Singapore, Los Angeles, New York City, Thailand, Paris, London, Frankfurt, Auckland, and Melbourne.
  • The Salt Lake City (SLC) to Ontario (ONT) flight route features several direct and connecting flights. If you opt for a connecting flight, you’ll likely have a layover at Denver (DEN), San Francisco (SFO), Las Vegas (LAS), Phoenix (PHX), Seattle (SEA), New York (JFK), Oakland (OAK), and Sacramento (SMF).
  • If you have a minor flying alone from Salt Lake City to Ontario, you can book them with Delta Airlines, which offers a special Unaccompanied Minor service on its direct flights. This service is available for children aged 5 to 17. Your young one will be escorted and receive special assistance throughout the flight.
  • Southwest Airlines, American Airlines, United Airlines, and Delta Airlines have the best carry-on weight allowance for flights from Salt Lake City to Ontario. There is no maximum carry-on weight limit on these airlines. Your carry-on bag and personal item should meet specific dimensions, which vary depending on the airline, and fit in the overhead storage unit. Your personal item should comfortably fit beneath the seat in front of you.

Prefer to fly direct from Salt Lake City to Ontario?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Salt Lake City to Ontario.
Find which airlines fly direct from Salt Lake City Airport to Ontario Airport, which days they fly and book direct flights.

Direct departures

Salt Lake City to Ontario

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Direct returns

Ontario to Salt Lake City

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Reviews of the top 3 airlines serving from Salt Lake City to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Salt Lake City to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Salt Lake City to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4256 reviews
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

4.0 OkayAnonymous, May 2026
MDW - LAX
Read more Southwest reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

Everything was great until I lost my water bottle and they can’t seem to locate it. I know I left it on the plane though.

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

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

Information on your arrival and departure airports