ONT - SLC

$57 Find Cheap Flights from Ontario to Salt Lake City

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Salt Lake City departing on 1/24. 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 Salt Lake City

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

Cheapest round-trip
$110
Overall average: $234
Frontier
Mon 1/12Wed 1/14
ONT - SLC • 1 stop
Cheapest non-stop
$147
Typical prices: $225-$374
Frontier
Thu 1/29Mon 2/2
ONT - SLC • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
Delta's Comfort Plus seats offer extra legroom.
ONT has streamlined security with short wait times.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Salt Lake City
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When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 17% price drop
January
Most popular
Good to know
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+1
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Salt Lake City 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 Ontario to Salt Lake City

Mon, Jan 12 - Wed, Jan 14
Frontier Logo
10:18 pm - 11:41 amONT-SLC
12h 23m1 stop
Frontier Logo
1:58 pm - 10:59 pmSLC-ONT
10h 01m1 stop
$110Frontier
Find Deal
Thu, Jan 29 - Mon, Feb 2
Frontier Logo
11:04 am - 6:00 pmONT-SLC
5h 56m1 stop
Frontier Logo
10:34 pm - 1:37 pmSLC-ONT
16h 03m1 stop
$113Frontier
Find Deal
Fri, Jan 9 - Mon, Jan 12
Frontier Logo
6:00 am - 8:37 amONT-SLC
25h 37m1 stop
Frontier Logo
6:07 pm - 5:54 pmSLC-ONT
24h 47m1 stop
$116Frontier
Find Deal
Wed, Jan 14 - Sun, Jan 18
Frontier Logo
7:15 am - 11:00 pmONT-SLC
14h 45m1 stop
Frontier Logo
9:58 pm - 11:59 pmSLC-ONT
27h 01m1 stop
$119Frontier
Find Deal
Sat, Dec 13 - Mon, Dec 15
Frontier Logo
3:20 pm - 12:07 amONT-SLC
7h 47m1 stop
Frontier Logo
9:33 pm - 9:17 pmSLC-ONT
24h 44m1 stop
$130Frontier
Find Deal
Sun, Jan 11 - Sun, Jan 18
Frontier Logo
6:00 am - 12:17 amONT-SLC
17h 17m1 stop
Frontier Logo
12:40 pm - 5:44 pmSLC-ONT
6h 04m1 stop
$133Frontier
Find Deal
Mon, Jan 12 - Wed, Jan 14
Frontier Logo
2:34 pm - 1:55 pmONT-SLC
22h 21m2 stops
Frontier Logo
1:58 pm - 10:59 pmSLC-ONT
10h 01m1 stop
$134Frontier
Find Deal
Wed, Dec 24 - Sun, Feb 1
Frontier Logo
6:45 am - 12:07 amONT-SLC
16h 22m1 stop
Frontier Logo
10:34 pm - 12:10 pmSLC-ONT
14h 36m1 stop
$136Frontier
Find Deal
Thu, Jan 22 - Mon, Jan 26
Frontier Logo
8:48 pm - 11:05 amONT-SLC
13h 17m1 stop
Frontier Logo
10:34 pm - 3:07 pmSLC-ONT
17h 33m2 stops
$139Frontier
Find Deal
Thu, Jan 29 - Mon, Feb 2
Frontier Logo
11:04 am - 6:00 pmONT-SLC
5h 56m1 stop
Frontier Logo
10:34 pm - 3:07 pmSLC-ONT
17h 33m2 stops
$140Frontier
Find Deal
Booking Insights

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

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

Find cheap flights to Salt Lake City
Find cheap flights to Salt Lake City

Planning a trip from Ontario to Salt Lake City? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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

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

When flying from Ontario to Salt Lake City, you should consider leaving on a Thursday and avoid Mondays if you are looking for the best rates. For your return to Ontario, you’ll find the best rates on Thursdays and the most expensive ones on Mondays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Salt Lake City, 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 Ontario to Salt Lake City is January, where tickets cost $234 (return) on average. On the other hand, the most expensive months are November and April, where the average cost of round-trip tickets is $319 and $306 respectively.

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

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 $296, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Salt Lake City, 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 Ontario to Salt Lake City, you should book around 2 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Expert advice

Expert advice for your flight from Ontario to Salt Lake City

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights, enhancing onboard connectivity.


Delta's Comfort Plus seats offer up to three extra inches of legroom for added comfort.

Frontier

Frontier's Economy Bundle includes a carry-on and seat choice, ideal for budget travelers.


Consider Premium Bundle for priority boarding and extra legroom, just $20 more than Economy.

Airports
ONT

ONT offers streamlined security with average wait times of 6-15 minutes, making it ideal for quick departures.

SLC

Take the TRAX Green Line from SLC to downtown Salt Lake City in about 20 minutes for a cost-effective option.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Delta and Frontier

Stefanie Waldek

Stefanie Waldek

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.

Read more
Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson

Jennifer Simonson

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on SLC

Harriet Baskas

Harriet Baskas

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.

Read more

Good to know

Low seasonAugust
Cheapest flight$57
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Ontario to Salt Lake City

When to book flights from Ontario to Salt Lake City

Are your dates flexible? Find out the best times to travel from Ontario to Salt Lake City 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 Ontario to Salt Lake City

  • Where are the lounges at ONT Airport located?

    Ontario International Airport has three lounges where travelers can stop by and comfortably have a drink while waiting to board their flight. These lounges include two Aspire Lounges and a USO Lounge. The Aspire Lounges are located in Terminal 2 near Gate 209 and Terminal 4 behind Gate 410. The USO Lounge, on the other hand, is located in the Administration Building (Old Terminal 1) and is only open to military personnel and their families.

  • Is public transport available to ONT from downtown Ontario?

    Yes, you can take the bus from downtown Ontario to the airport. Head to the station at Holt @ Palm Eb and take the 61 bus which goes directly to the airport. Alternatively, you can take a taxi if you need to get to the airport as quickly as possible. They are available everywhere around downtown so finding one shouldn’t be difficult.

  • How do I get from SLC to the city center?

    There are a few transport options available from SLC to the city center. If you’re working with a tight budget, the metro is worth considering. Just head to the airport station and board the Green Line towards West Valley. If you would rather go for convenience, there are plenty of taxis available outside the arrivals terminal and they will drop you at any destination in the city.

  • How can I get cheaper flight tickets?

    If you’re looking to save a few dollars on flight tickets, try booking your flight a few months in advance. This is because ticket prices tend to increase as the demand for tickets increases, and the demand for tickets increases as the travel date approaches. Therefore, by booking in advance, you will be avoiding the price surges that happen over time. You should also try and be more flexible with travel dates. Avoid booking days with high demand such as holidays and weekends.

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

    In the last 3 days, the lowest price for a flight from Ontario to Salt Lake City was $57 for a one-way ticket and $110 for a round-trip.

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

    No

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

    All the following airlines offer inflight Wi-Fi service on the Ontario to Salt Lake City flight route: Delta, Alaska Airlines, British Airways, Finnair, Iberia, American Airlines, and Aeromexico.

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

    The Boeing 737-800 is the aircraft model that flies most regularly on the Ontario to Salt Lake City flight route.

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

    oneworld, and SkyTeam are the airline alliances operating flights between Ontario and Salt Lake City, with oneworld being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Salt Lake City are Southwest and Delta. With an average price for the route of $315 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 $308 and an overall rating of 7.9.

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

    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 Ontario to Salt Lake City.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Salt Lake City from Ontario 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 Ontario to Salt Lake City?

    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 Salt Lake City with an airline and back to Ontario with another airline. Booking your flights between Ontario and SLC 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 Ontario to Salt Lake City?

    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 Salt Lake City from Ontario 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 Ontario to Salt Lake City

  • Looking for a cheap flight? 25% of our users found flights on this route for $169 or less one-way and $320 or less round-trip.
  • Ontario International Airport (ONT) has baby care rooms for travelers with infants. These rooms are ideal for pumping and breastfeeding as well as changing diapers. They are located in Terminal 2 across from Gate 207 and Terminal 4 across from Gate 407.
  • If you plan on leaving your car at the ONT airport parking, you should reserve a spot in advance to avoid wasting a lot of time roaming the car park. You can also opt for the offsite parking lots which usually charge lower prices compared to airport parking.
  • ONT Airport has courtesy shuttles that help travelers move from one terminal to another as well as from the parking lots to the terminals and ConRAC facility. These shuttles run every five minutes and a free to use.
  • If you need any assistance while at Salt Lake City International Airport (SLC), just look for an information desk. They are located in both terminals across from baggage claim. These desks are usually staffed with airport officials who are always happy to help.
  • SLC Airport has baggage carts available to all travelers who need help carrying their luggage. to get these carts, you will have to pay a $5 fee for every cart and the amount is partially refundable if you return the cart. The refund ranges between $0.25 and $1.

Prefer to fly direct from Ontario to Salt Lake City?

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

Direct departures

Ontario to Salt Lake City

Monday

Delta, Frontier

Delta, Frontier

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta, Frontier

Delta, Frontier

Friday

Delta, Frontier

Delta, Frontier

Saturday

Delta

Delta

Sunday

Delta, Frontier

Delta, Frontier

See more direct flights

Direct returns

Salt Lake City to Ontario

Monday

Delta, Frontier

Delta, Frontier

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta, Frontier

Delta, Frontier

Friday

Delta, Frontier

Delta, Frontier

Saturday

Delta

Delta

Sunday

Delta, Frontier

Delta, Frontier

See more direct flights

Reviews of the top 4 airlines serving from Ontario to Salt Lake City

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Salt Lake City. 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 Ontario to Salt Lake City? 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 4255 reviews
8.6Crew
8.0Comfort
8.1Boarding
7.5Entertainment
7.0Food
Airline reviews

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

10.0 ExcellentGordon, Nov 2025SAN - OAK
Read more Southwest reviews

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Delay in SLC jammed us up in Chicago. Got caught up in rush hour traffic

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The flight was fine. This survey is not. There is no option for N/A so items which don’t apply to my experience still must be rated. In those instances I give a “3” rating which ultimately skews the results.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

The entertainment package was vast and the selections were very current. Keep updating it was great.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

No way to get boarding pass on my phone. In order to print the bag ticket a boarding pass is needed. Asked the agent to print me one, they said they typically do not due this as its so much work. I showed the email confirmation and I asked how i could do it my self the agent replied he did not know as there was no link. The flight was delayed due to an attendant forgetting to come to work. On the flight no drinks were offered only for purchase meals.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

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

Information on your arrival and departure airports