SLC - ONT

$45 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 1/7. 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
$109
Overall average: $259
Frontier
Thu 12/4Sat 12/6
SLC - ONT • 1 stop
Cheapest non-stop
$149
Typical prices: $207-$448
Frontier
Thu 1/29Mon 2/9
SLC - ONT • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
Delta offers free Wi-Fi for SkyMiles members.
Use the Metrolink San Bernardino Line to reach ONT.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 60% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 49% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Expert advice
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

Thu, Dec 4 - Sat, Dec 6
Frontier Logo
7:20 am - 11:09 amSLC-ONT
4h 49m1 stop
Frontier Logo
6:15 am - 1:43 pmONT-SLC
6h 28m1 stop
$109Frontier
Find Deal
Sat, Dec 13 - Mon, Dec 15
Frontier Logo
2:38 pm - 9:17 pmSLC-ONT
7h 39m1 stop
Frontier Logo
6:15 am - 11:41 amONT-SLC
4h 26m1 stop
$110Frontier
Find Deal
Tue, Dec 23 - Tue, Dec 30
Frontier Logo
10:25 pm - 5:15 pmSLC-ONT
19h 50m1 stop
Frontier Logo
6:45 am - 12:07 amONT-SLC
16h 22m1 stop
$114Frontier
Find Deal
Mon, Dec 22 - Tue, Dec 30
Frontier Logo
10:25 pm - 5:22 pmSLC-ONT
19h 57m1 stop
Frontier Logo
6:45 am - 12:07 amONT-SLC
16h 22m1 stop
$115Frontier
Find Deal
Thu, Dec 11 - Sat, Dec 13
Frontier Logo
6:32 pm - 2:25 pmSLC-ONT
20h 53m1 stop
Frontier Logo
3:20 pm - 12:07 amONT-SLC
7h 47m1 stop
$117Frontier
Find Deal
Wed, Feb 11 - Wed, Feb 18
Frontier Logo
6:41 pm - 10:39 pmSLC-ONT
4h 58m1 stop
Frontier Logo
1:37 pm - 1:43 pmONT-SLC
23h 06m1 stop
$122Frontier
Find Deal
Tue, Jan 27 - Sat, Jan 31
Frontier Logo
7:45 am - 10:39 pmSLC-ONT
15h 54m1 stop
Frontier Logo
8:30 am - 1:43 pmONT-SLC
4h 13m1 stop
$123Frontier
Find Deal
Fri, Dec 12 - Mon, Dec 15
Frontier Logo
2:20 pm - 11:48 pmSLC-ONT
10h 28m1 stop
Frontier Logo
6:15 am - 11:41 amONT-SLC
4h 26m1 stop
$124Frontier
Find Deal
Mon, Dec 15 - Thu, Dec 18
Frontier Logo
2:38 pm - 11:31 pmSLC-ONT
9h 53m1 stop
Frontier Logo
6:45 am - 11:37 amONT-SLC
27h 52m1 stop
$127Frontier
Find Deal
Thu, Dec 11 - Sat, Dec 13
Frontier Logo
7:20 am - 11:09 amSLC-ONT
4h 49m1 stop
Frontier Logo
6:15 am - 1:43 pmONT-SLC
6h 28m1 stop
$128Frontier
Find Deal
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.

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 Monday 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 January, where tickets cost $140 (return) on average. On the other hand, the most expensive months are November and February, where the average cost of round-trip tickets is $525 and $299 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 $229, 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 4 weeks before departure, which saves you about 60% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Expert advice

Expert advice for your flight from Salt Lake City to Ontario

 
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 in-flight connectivity.


Delta's SkyMiles program offers free snacks and Wi-Fi, ideal for frequent domestic travelers.

Frontier

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


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

Airports
SLC

For a quicker security check, head to the Level 1 checkpoint, usually less crowded than the main Level 2 area.

ONT

Use the Metrolink San Bernardino Line for a seamless connection to ONT via the ONT Connect Shuttle, included in your fare.

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 seasonFebruary
Cheapest flight$46
Best time to beat the crowds but there is an average 8% increase 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 3 days, the lowest price for a flight from Salt Lake City to Ontario was $46 for a one-way ticket and $109 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, JetBlue, Alaska Airlines, and American Airlines 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 A321neo 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 $292 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 $302 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 $198 or less one-way and $259 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, 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

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

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 4236 reviews
8.1Boarding
8.0Comfort
7.0Food
7.5Entertainment
8.6Crew
Airline reviews

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.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

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.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

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.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The flight was an hour and a half late departing which was inconvenient

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

Nothing special. The crew never went out of their way for anything.

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..,

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Having to up charge for a seat assignment is not good. Delta can do better

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.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

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

Information on your arrival and departure airports