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$78+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
CLT — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Charlotte Douglas to Ontario are usually found in April or March, booked 54 days in advance, depart on a Friday 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 August 14, 2025.

Round-trip from

$165
(Mytrip)

One-way from

$82
(Frontier)

Popular in

December

Cheapest in

April

Average price

$397

Good round-trip deal

$317 or less

Good one-way deal

$165 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. 6% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:55 amCLT - ONT
1 stop12h 40mFrontier
Thu 9/258:59 pmONT - CLT
1 stop16h 44mFrontier
Deal found 8/14$153
This Booking.com deal was found by Cheapflights users on 8/14. 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 9/55:20 pmCLT - ONT
1 stop29h 34mFrontier
Sun 9/78:59 pmONT - CLT
1 stop16h 26mFrontier
Deal found 8/14$154
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip 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
Sat 10/48:59 pmONT - CLT
1 stop16h 26mFrontier
Deal found 8/14$165
This CheapOair deal was found by Cheapflights users on 8/14. 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.
Thu 9/111:11 pmCLT - ONT
1 stop25h 17mFrontier
Thu 9/183:43 pmONT - CLT
1 stop22h 00mFrontier
Deal found 8/14$173
This American Airlines deal was found by Cheapflights users on 8/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:27 pmCLT - ONT
Nonstop4h 57mAmerican Airlines
Sat 11/110:37 pmONT - CLT
Nonstop4h 23mAmerican Airlines
Deal found 8/14$177
This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/67:27 pmCLT - ONT
Nonstop4h 57mAmerican Airlines
Mon 9/810:35 pmONT - CLT
Nonstop4h 33mAmerican Airlines
Deal found 8/13$190
This American Airlines deal was found by Cheapflights users on 8/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/267:27 pmCLT - ONT
Nonstop4h 57mAmerican Airlines
Sat 10/410:35 pmONT - CLT
Nonstop4h 33mAmerican Airlines
Deal found 8/14$192
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2310:50 amCLT - ONT
1 stop7h 42mFrontier
Sun 10/266:53 amONT - CLT
1 stop6h 46mFrontier
Deal found 8/14$195

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 August 14, 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

Sun 9/21

8:55 am-6:35 pm

1 stop12h 40m

Ontario

Thu 9/25

8:59 pm-4:43 pm

1 stop16h 44m

$153

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Sun 10/12

5:34 pm-9:35 am

1 stop19h 01m

Ontario

Sun 10/19

12:49 pm-9:10 pm

1 stop29h 21m

$153

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 9/5

5:20 pm-7:54 pm

1 stop29h 34m

Ontario

Sun 9/7

8:59 pm-4:25 pm

1 stop16h 26m

$154

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 9/26

5:38 pm-7:54 pm

1 stop29h 16m

Ontario

Sat 10/4

8:59 pm-4:25 pm

1 stop16h 26m

$165

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 10/24

6:48 pm-7:49 am

1 stop16h 01m

Ontario

Fri 10/31

6:53 am-5:17 pm

1 stop7h 24m

$173

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 10/24

6:48 pm-7:49 am

1 stop16h 01m

Ontario

Mon 10/27

6:53 am-4:39 pm

1 stop6h 46m

$173

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Thu 9/11

1:11 pm-11:28 am

1 stop25h 17m

Ontario

Thu 9/18

3:43 pm-4:43 pm

1 stop22h 00m

$173

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Thu 9/25

8:55 am-6:35 pm

1 stop12h 40m

Ontario

Thu 10/2

8:59 pm-4:43 pm

1 stop16h 44m

$173

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Thu 10/30

11:37 am-7:29 am

1 stop22h 52m

Ontario

Sat 11/1

12:05 pm-6:17 pm

1 stop27h 12m

$173

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Sat 10/4

7:27 pm-9:24 pm

Nonstop4h 57m

Ontario

Sat 11/1

10:37 pm-6:00 am

Nonstop4h 23m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 23 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 August 8, 2025.

The best time to book flights from Charlotte to Ontario is 54 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 $328). 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 August 14, 2025.

It’s optimal to fly from Charlotte to Ontario at noon. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the afternoon.

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 August 14, 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
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

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
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

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
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

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
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

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
8,045 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

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
3,219 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

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 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 $132. On average you can expect to pay $567. The most popular route, (Charlotte Douglas - Ontario), can usually be booked for $207.

  • 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 $328). 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.

See more FAQs

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$45Average$263FlexibilityNo cancel feeOn-time65%
FrontierCheapest$165Average$269FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$216Average$346FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$356FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$309Average$447FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$328Average$379FlexibilityNo cancel feeOn-time63%

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