CHS - ONT

$165 Find Cheap Flights from Charleston 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 Charleston to Ontario departing on 3/18. 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 Charleston 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 Charleston to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$331
Overall average: $378
Delta
Sat 4/25Sat 5/2
CHS - ONT • 1 stop
Cheapest one-way
$165
Typical prices: $165-$260
Multiple Airlines
Wed 3/18
CHS - ONT • 3 stops
Top airlines
Delta
Cheapest • from $331 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Charleston and Ontario. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Charlotte (CLT)
Cheapest • Avg $249 (round-trip)
Charlotte (CLT)
Shortest trip • 6h 39m (one-way)
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 39% price drop
May
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
Flight Deals

Cheap Flights from Charleston to Ontario (CHS-ONT)

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

Sat, Apr 25 - Sat, May 2
Delta Logo
12:25 pm - 6:33 pm
CHS
-
ONT
9h 08m
1 stop
Delta Logo
12:49 pm - 9:55 pm
ONT
-
CHS
6h 06m
1 stop
$331Delta
Sat, Apr 25 - Sat, May 2
American Airlines Logo
7:30 pm - 11:46 pm
CHS
-
ONT
7h 16m
1 stop
American Airlines Logo
7:30 am - 10:35 pm
ONT
-
CHS
12h 05m
2 stops
$371American Airlines
Fri, May 8 - Mon, May 11
Alaska Airlines Logo
7:07 pm - 9:45 am
CHS
-
ONT
17h 38m
1 stop
Alaska Airlines Logo
3:26 pm - 6:07 pm
ONT
-
CHS
23h 41m
1 stop
$378Alaska Airlines
Fri, Apr 17 - Sat, Apr 25
Delta Logo
2:20 pm - 9:00 pm
CHS
-
ONT
9h 40m
1 stop
Delta Logo
12:49 pm - 9:55 pm
ONT
-
CHS
6h 06m
1 stop
$383Delta
Sat, Apr 25 - Sun, May 3
Delta Logo
7:25 am - 11:36 am
CHS
-
ONT
7h 11m
1 stop
Delta Logo
10:15 pm - 8:51 am
ONT
-
CHS
7h 36m
1 stop
$384Delta
Thu, May 28 - Sat, May 30
JetBlue Logo
3:30 pm - 10:09 pm
CHS
-
ONT
9h 39m
1 stop
JetBlue Logo
11:25 pm - 2:40 pm
ONT
-
CHS
12h 15m
1 stop
$386JetBlue
Sat, May 23 - Mon, May 25
Delta Logo
6:05 pm - 9:54 pm
CHS
-
ONT
6h 49m
1 stop
Delta Logo
11:04 pm - 8:43 am
ONT
-
CHS
6h 39m
1 stop
$394Delta
Thu, Mar 19 - Sun, Mar 22
Delta Logo
6:30 am - 11:47 am
CHS
-
ONT
8h 17m
1 stop
Delta Logo
10:25 pm - 9:44 am
ONT
-
CHS
8h 19m
1 stop
$402Delta
Wed, Apr 22 - Sat, Apr 25
Alaska Airlines Logo
7:07 pm - 11:59 pm
CHS
-
ONT
31h 52m
1 stop
Alaska Airlines Logo
3:26 pm - 6:07 pm
ONT
-
CHS
23h 41m
1 stop
$403Alaska Airlines
Thu, Apr 30 - Tue, May 5
Alaska Airlines Logo
7:07 pm - 11:59 pm
CHS
-
ONT
31h 52m
1 stop
Alaska Airlines Logo
3:26 pm - 6:07 pm
ONT
-
CHS
23h 41m
1 stop
$410Alaska Airlines
Booking Insights

KAYAK's insights & trends for Charleston to Ontario flights

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

What is the cheapest month to fly from Charleston to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Charleston 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 Charleston to Ontario is June, where tickets cost $313 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,345 and $1,017 respectively.

Good to know

Low seasonOctober
Cheapest flight$165
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Charleston to Ontario

When to book flights from Charleston to Ontario

Are your dates flexible? Find out the best times to travel from Charleston 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 Charleston to Ontario

  • What is the cheapest flight from Charleston to Ontario?

    In the last 3 days, the lowest price for a flight from Charleston to Ontario was $165 for a one-way ticket and $331 for a round-trip.

  • Do I need a passport to fly between Charleston and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Charleston to Ontario?

    When flying out of Charleston you will be using Charleston. You will be landing at Ontario, also known as Ontario.

  • Which aircraft models fly most regularly from Charleston to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Charleston to Ontario?

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

  • Which is the best airline for flights from Charleston to Ontario, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Charleston to Ontario are Delta and American Airlines. With an average price for the route of $377 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $367 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Charleston 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 Charleston to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Charleston 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 Charleston 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 Charleston with another airline. Booking your flights between Charleston 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 Charleston 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 Charleston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Charleston to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Charleston 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 Charleston 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.
7.9
DeltaOverall score based on 8236 reviews
8.1Boarding
8.5Crew
7.2Food
7.8Entertainment
7.9Comfort
Airline reviews

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

10.0 ExcellentSoosnata, Feb 2026
MIA - LAX
Read more Delta reviews

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

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 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.

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything you need to know for your flight from Charleston to Ontario

Information on your arrival and departure airports