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$123+ Cheap flights from Charlotte to Ontario (CLT - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
CLT — ONT
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Charlotte Douglas to Ontario are usually found in April or September, booked 55 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Charlotte to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Charlotte (CLT) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$153
(Priceline)

One-way from

$123
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$355

Good round-trip deal

$327 or less

Good one-way deal

$179 or less
From Charlotte Douglas to Ontario
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One-way flight from Charlotte Douglas to Ontario
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Highest demand for flights based on searches. 11% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Charlotte Douglas to Ontario.
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Price to beat on a one-way flight from Charlotte Douglas to Ontario.
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Find flight deals from Charlotte to Ontario

Cheapest flights from Charlotte to Ontario
Explore the most affordable flight options available from Charlotte to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Priceline deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:07 pmCLT - ONT
1 stop8h 43mFrontier
Sun 11/166:53 amONT - CLT
1 stop7h 24mFrontier
Deal found 9/14$153
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/79:57 amCLT - ONT
1 stop11h 52mFrontier
Mon 11/176:53 amONT - CLT
1 stop7h 24mFrontier
Deal found 9/14$154
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:55 amCLT - ONT
1 stop12h 40mFrontier
Sun 10/57:15 pmONT - CLT
1 stop12h 37mFrontier
Deal found 9/15$163
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:38 pmCLT - ONT
1 stop29h 16mFrontier
Sat 10/118:34 amONT - CLT
1 stop22h 21mFrontier
Deal found 9/14$173
This Gotogate deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:38 pmCLT - ONT
1 stop29h 16mFrontier
Thu 10/28:59 pmONT - CLT
1 stop16h 44mFrontier
Deal found 9/16$179
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/288:55 amCLT - ONT
1 stop12h 40mFrontier
Wed 10/18:59 pmONT - CLT
1 stop16h 26mFrontier
Deal found 9/16$185
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:00 amCLT - ONT
1 stop9h 28mFrontier
Fri 10/316:53 amONT - CLT
1 stop7h 24mFrontier
Deal found 9/15$191
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:07 pmCLT - ONT
1 stop20h 03mFrontier
Sun 11/96:53 amONT - CLT
2 stops29h 05mFrontier
Deal found 9/14$204
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:20 pmCLT - ONT
1 stop29h 34mFrontier
Thu 9/258:59 pmONT - CLT
1 stop16h 44mFrontier
Deal found 9/14$207
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:20 pmCLT - ONT
1 stop17h 33mFrontier
Sun 10/58:59 pmONT - CLT
1 stop16h 26mFrontier
Deal found 9/15$210

Cheapflights Fare Finder

 
Customize your flight search to find flights from Charlotte to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Charlotte to Ontario that are best for you.

Fly from

Charlotte

Fly to

Ontario

Route

Depart

Return

Price

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 10/17

5:34 pm-11:50 pm

1 stop9h 16m

Ontario

Mon 10/20

6:53 am-4:39 pm

1 stop6h 46m

$245

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Wed 11/12

12:55 pm-8:45 pm

2 stops10h 50m

Ontario

Wed 11/19

8:40 am-9:10 pm

2 stops9h 30m

$327

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Wed 11/5

6:10 am-10:35 am

1 stop7h 25m

Ontario

Sun 11/9

10:50 am-9:35 pm

1 stop7h 45m

$341

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Sat 9/20

9:30 am-6:15 pm

1 stop11h 45m

Ontario

Tue 10/14

8:10 am-8:50 pm

1 stop9h 40m

$342

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Tue 10/21

6:45 am-10:26 am

1 stop6h 41m

Ontario

Sat 11/1

6:00 am-4:19 pm

1 stop7h 19m

$347

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Sat 9/27

5:30 am-10:42 am

1 stop8h 12m

Ontario

Tue 9/30

10:00 pm-8:52 am

1 stop7h 52m

$347

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Wed 11/12

5:11 pm-11:04 pm

1 stop8h 53m

Ontario

Wed 11/19

6:00 am-4:21 pm

1 stop7h 21m

$347

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Sat 9/20

5:30 pm-10:41 pm

1 stop8h 11m

Ontario

Sat 9/27

11:55 am-11:46 pm

1 stop8h 51m

$347

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Wed 11/5

5:26 pm-7:41 pm

Nonstop5h 15m

Ontario

Sun 11/9

10:34 pm-6:01 am

Nonstop4h 27m

$348

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 11/14

10:51 pm-11:50 pm

2 stops27h 59m

$136

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 18 results
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Best time to book a flight from Charlotte to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Charlotte with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Charlotte to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Charlotte to Ontario. Price data was last updated on September 12, 2025.

The best time to book flights from Charlotte to Ontario is 55 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Charlotte to Ontario?

Currently, August is the cheapest month in which you can book a flight from Charlotte to Ontario (average of $246). Flying from Charlotte to Ontario in March is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CLT to ONT?

Find hourly flight availability from Charlotte to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s optimal to fly from Charlotte to Ontario in the afternoon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Charlotte to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Charlotte to Ontario flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated September 16, 2025.
Read reviews from past customers who have flown Southwest, Delta, and American Airlines from Charlotte to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,019 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,174 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Charlotte to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Charlotte to Ontario?

    If you book a flight from Charlotte to Ontario, you will be flying from Douglas to Ontario. Flights to Ontario (ONT) from Charlotte Douglas (CLT) take 4h 57m for a nonstop flight. There is 1 flight from Douglas to Ontario per day from 6 airlines.

  • How long is the flight from Charlotte to Ontario?

    For as low as $347, Frontier can have you in Ontario from Charlotte in 6h 41m. Charlotte and Ontario are separated by a distance of 2072 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Charlotte to Ontario round-trip?

    Currently priced at $45, Spirit Airlines will fly you from Charlotte to Ontario and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and United Airlines - these airlines can fly you to your destination from $165 and $216, respectively. Spirit Airlines is 88% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest flights from Charlotte to Ontario?

    The cheapest flight price from Charlotte to Ontario is $130. On average you can expect to pay $605. The most popular route, (Charlotte Douglas - Ontario), can usually be booked for $226.

  • Can I find deals for flights from Charlotte to Ontario that include hotel bookings?

    Yes. In addition to deals on Charlotte to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Charlotte to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Charlotte to Ontario.

  • Can I find deals for business class flights from Charlotte to Ontario?

    Yes. Cheapflights offers flight deals from Charlotte to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Charlotte to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Charlotte to Ontario (average of $246). Flying from Charlotte to Ontario in March is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 6 airlines flying from Charlotte to Ontario

Discover the top 6 airlines that operate flights from Charlotte to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$45Average$263FlexibilityNo cancel feeOn-time65%
FrontierCheapest$165Average$288FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$216Average$429FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$355FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$296Average$435FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$328Average$378FlexibilityNo cancel feeOn-time63%

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