CLT - ONT

$76 Find Cheap Flights from Charlotte 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 Charlotte to Ontario departing on 4/18. 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 Charlotte to Ontario.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Charlotte to Ontario.
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$139
Overall average: $348
Frontier
Sat 4/18Mon 5/11
CLT - ONT • 1 stop
Cheapest non-stop
$382
Typical prices: $351-$505
American Airlines
Sat 3/28Sat 4/4
CLT - ONT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
For departures at CLT, avoid peak times for security.
For a smooth arrival at ONT, use the ONT Connect Shuttle.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $174 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with American Airlines. Average duration is 5h 25m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Fort Lauderdale (FLL)
Cheapest • Avg $214 (round-trip)
Phoenix (PHX)
Shortest trip • 6h 49m (one-way)
Insights
Insights
Insights
Insights
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 16% 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 Charlotte to Ontario (CLT-ONT)

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

Sat, Apr 18 - Mon, May 11
Frontier Logo
5:47 pm - 11:55 pm
CLT
-
ONT
9h 08m
1 stop
Frontier Logo
12:59 am - 6:54 pm
ONT
-
CLT
14h 55m
1 stop
$139Frontier
Sat, Apr 18 - Tue, May 12
Frontier Logo
5:47 pm - 11:55 pm
CLT
-
ONT
9h 08m
1 stop
Frontier Logo
7:29 pm - 6:54 pm
ONT
-
CLT
20h 25m
2 stops
$170Frontier
Sat, May 2 - Mon, May 4
Frontier Logo
5:47 pm - 11:55 pm
CLT
-
ONT
9h 08m
1 stop
Frontier Logo
12:59 am - 6:54 pm
ONT
-
CLT
14h 55m
1 stop
$174Frontier
Fri, May 8 - Mon, May 11
Frontier Logo
7:49 pm - 11:55 pm
CLT
-
ONT
7h 06m
1 stop
Frontier Logo
12:59 am - 6:54 pm
ONT
-
CLT
14h 55m
1 stop
$175Frontier
Wed, Apr 22 - Mon, May 4
Frontier Logo
7:49 pm - 7:31 am
CLT
-
ONT
14h 42m
1 stop
Frontier Logo
8:59 pm - 6:54 pm
ONT
-
CLT
18h 55m
2 stops
$191Frontier
Thu, Apr 16 - Sun, Apr 19
Frontier Logo
4:42 pm - 11:55 pm
CLT
-
ONT
10h 13m
1 stop
Frontier Logo
12:59 am - 5:23 pm
ONT
-
CLT
13h 24m
1 stop
$200Frontier
Mon, Apr 13 - Mon, May 11
Frontier Logo
10:28 pm - 6:49 pm
CLT
-
ONT
23h 21m
2 stops
Frontier Logo
12:59 am - 6:54 pm
ONT
-
CLT
14h 55m
1 stop
$201Frontier
Thu, Apr 9 - Mon, Apr 13
Frontier Logo
7:49 pm - 11:56 pm
CLT
-
ONT
7h 07m
1 stop
Frontier Logo
12:59 am - 6:54 pm
ONT
-
CLT
14h 55m
1 stop
$202Frontier
Wed, Apr 1 - Tue, Apr 28
Frontier Logo
4:33 pm - 8:04 am
CLT
-
ONT
18h 31m
2 stops
Frontier Logo
12:59 am - 6:54 pm
ONT
-
CLT
14h 55m
1 stop
$206Frontier
Wed, Apr 15 - Tue, Apr 21
Frontier Logo
7:49 pm - 11:55 pm
CLT
-
ONT
7h 06m
1 stop
Frontier Logo
12:59 am - 6:54 pm
ONT
-
CLT
14h 55m
1 stop
$207Frontier
Booking Insights

KAYAK's insights & trends for Charlotte to Ontario flights

Get data-powered insights and trends into flights from Charlotte 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 Charlotte to Ontario?

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

If your flying dates are flexible, you should consider flying to Ontario on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Charlotte to Ontario. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Charlotte 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 Charlotte to Ontario is April, where tickets cost $348 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $478 and $473 respectively.

Can I save money by flying with a layover from Charlotte 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $432 on average.

How far in advance should I book a flight from Charlotte 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 Charlotte 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 Charlotte to Ontario, you should book around 4 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Expert advice

Expert advice for your flight from Charlotte to Ontario

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

Jennifer Simonson

Expert on ONT

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

Ramsey Qubein

Ramsey Qubein

Expert on CLT

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Good to know

Low seasonJanuary
Cheapest flight$71
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 16% increase in price.
Flight from Charlotte to Ontario

When to book flights from Charlotte to Ontario

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

  • What is the cheapest flight from Charlotte to Ontario?

    In the last 3 days, the lowest price for a flight from Charlotte to Ontario was $76 for a one-way ticket and $174 for a round-trip.

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

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

  • Which airlines offer Wi-Fi service onboard planes from Charlotte to Ontario?

    American Airlines, and Delta offer inflight Wi-Fi service on the Charlotte to Ontario flight route.

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

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the Charlotte to Ontario flight route.

  • Which airline alliances offer flights from Charlotte to Ontario?

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

  • On which days can I fly direct from Charlotte to Ontario?

    There are nonstop flights from Charlotte to Ontario on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Charlotte to Ontario are Southwest and Delta. With an average price for the route of $397 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 $356 and an overall rating of 7.9.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Charlotte 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 Charlotte 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 Charlotte with another airline. Booking your flights between Charlotte 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 Charlotte 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 Charlotte 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 Charlotte to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $425 or less round-trip.

Prefer to fly direct from Charlotte to Ontario?

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

Direct departures

Charlotte Douglas to Ontario

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Direct returns

Ontario to Charlotte Douglas

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Reviews of the top 5 airlines serving from Charlotte to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Charlotte 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 Charlotte 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 4295 reviews
8.6Crew
7.5Entertainment
8.0Comfort
7.0Food
8.1Boarding
Airline reviews

The charges were ridiculous for an hour flight and the turbulence was very scary.

2.0 MediocreDarcey, Feb 2026
SAN - SJC
Read more Southwest reviews

The charges were ridiculous for an hour flight and the turbulence was very scary.

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

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

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!

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.

On time flight. Seat comfort could be better in the Comfort section.

Overall we had a good experience during our flight from San Francisco to Houston.

it was a very short flight so my expectations were low.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

I like that the flight attendant was very attentive and helpful. The meal menu could have more of an variety of food choices.

We missed our flight and got stranded in Miami where we had to rent a hotel we could not afford. they would not work with us because they said it was weather related even though the gate attendant said it was not. I could go on but trying to get satisfaction has wore me down, which I believe is the intent. My only solution is to never fly AA again.

Overall it was a good flight. Because we traveled on a Saturday we were upgraded to FC since my wife and I are both Executive Platinum. The only areas for improvement we noted are better snack assortment and perhaps a little nicer plane as American is flying some older planes now. Everything else on this flight was excellent, which is frankly not the norm for American since we have had multiple issues on prior AA flights.

Didn't get a seat assignment until the last minute even though i picked a seat.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

Could we please end the loud announcements about credit card offers on your flights? We are trying to sleep, work, watch videos, etc. and if we need a credit card, we will ask for one. Flying is already not what it used to be.

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

Bags took over and hour to come out. Delays due to wind caused rebooking.

Lower WiFi prices; allow us to see our flight on a map; more variety of drink choices.

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

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

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

Information on your arrival and departure airports