SLC - ONT

$43 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 11/12. 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

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
$85
Overall average: $502
Frontier
Wed 11/12Mon 11/17
SLC - ONT • 1 stop
Cheapest non-stop
$259
Typical prices: $116-$299
Delta
Wed 12/17Fri 1/2
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
Top airlines
Frontier
Cheapest • from $85 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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
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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

Wed, Nov 12 - Mon, Nov 17
Frontier Logo
5:34 pm - 9:10 amSLC-ONT
16h 36m1 stop
Frontier Logo
6:00 am - 9:35 pmONT-SLC
14h 35m1 stop
$85Frontier
Find Deal
Wed, Nov 12 - Wed, Nov 19
Frontier Logo
5:34 pm - 12:51 pmSLC-ONT
20h 17m1 stop
Frontier Logo
8:00 am - 4:39 pmONT-SLC
7h 39m1 stop
$99Frontier
Find Deal
Tue, Nov 4 - Wed, Nov 5
Frontier Logo
1:10 pm - 9:27 pmSLC-ONT
9h 17m1 stop
Frontier Logo
8:00 am - 4:39 pmONT-SLC
7h 39m1 stop
$110Frontier
Find Deal
Mon, Oct 27 - Tue, Nov 4
Frontier Logo
8:13 pm - 8:42 pmSLC-ONT
25h 29m1 stop
Frontier Logo
8:45 am - 8:00 pmONT-SLC
10h 15m1 stop
$116Frontier
Find Deal
Wed, Nov 12 - Mon, Nov 17
Frontier Logo
5:34 pm - 9:10 amSLC-ONT
16h 36m1 stop
Frontier Logo
10:43 pm - 11:40 amONT-SLC
35h 57m2 stops
$118Frontier
Find Deal
Fri, Oct 31 - Sun, Nov 2
Multiple Airlines Logo
9:28 am - 12:51 pmSLC-ONT
4h 23m1 stop
Multiple Airlines Logo
10:43 pm - 7:15 pmONT-SLC
19h 32m2 stops
$169Multiple Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
Multiple Airlines Logo
8:10 pm - 11:50 pmSLC-ONT
4h 40m1 stop
Multiple Airlines Logo
10:43 pm - 1:19 pmONT-SLC
13h 36m2 stops
$172Multiple Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 26
Alaska Airlines Logo
6:28 pm - 11:56 pmSLC-ONT
6h 28m1 stop
Alaska Airlines Logo
4:03 pm - 11:43 pmONT-SLC
6h 40m1 stop
$204Alaska Airlines
Find Deal
Mon, Feb 2 - Fri, Feb 6
Alaska Airlines Logo
12:17 pm - 11:56 pmSLC-ONT
12h 39m1 stop
Alaska Airlines Logo
11:53 am - 11:23 amONT-SLC
22h 30m1 stop
$225Alaska Airlines
Find Deal
Tue, Nov 11 - Sat, Nov 22
Delta Logo
9:50 pm - 11:08 amSLC-ONT
14h 18m1 stop
Delta Logo
1:20 pm - 4:07 pmONT-SLC
1h 47mnonstop
$252Delta
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 October, where the average cost of round-trip tickets is $502 and $300 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 21 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.

Read more about Deltaby Stefanie Waldek
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.

Read more about Frontierby Stefanie Waldek
Airports
SLC

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

Read more about SLCby Harriet Baskas
ONT

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

Read more about ONTby Jennifer Simonson
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 seasonMay
Cheapest flight$46
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 7% 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 $85 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 A220-300 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?

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

  • 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 $289 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 $303 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 $258 or less one-way and $289 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 4 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 4240 reviews
7.5Entertainment
7.0Food
8.1Boarding
8.0Comfort
8.6Crew
Airline reviews

Connecting flight is on time and boarding was a breeze!

10.0 ExcellentGabriel, Sep 2025DEN - SMF
Read more Southwest reviews

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.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

For the first time in a long time we had a flawless experience with Southwest. Both flights were early and no mechanical errors at all. We were shocked and pleasantly surprised 😮.

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

Food was surprisingly good but the WiFi was not great

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Did not get the seat I selected and paid for.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

There is no room, no gluten free options, or any free internet/entertainment. You have to bring your own tablet or smartphone because there are no screens.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

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

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

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.

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

Information on your arrival and departure airports

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