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$91+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
CLT — ONT
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
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 Friday or Tuesday and return on a Tuesday

Cheap 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 December 21, 2025.

This CheapOair deal was found by Cheapflights users on 12/19. 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 12/2512:17 pmCLT - ONT
1 stop14h 42mFrontier
Thu 1/16:45 amONT - CLT
1 stop25h 37mFrontier
Deal found 12/19$305
This CheapOair deal was found by Cheapflights users on 12/20. 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.
Mon 12/228:39 pmCLT - ONT
1 stop13h 45mFrontier
Wed 12/316:45 amONT - CLT
1 stop25h 37mFrontier
Deal found 12/20$333
This Priceline deal was found by Cheapflights users on 12/20. 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.
Wed 12/315:14 pmCLT - ONT
1 stop9h 45mFrontier
Sun 1/48:19 amONT - CLT
1 stop6h 45mFrontier
Deal found 12/20$338
This Mytrip deal was found by Cheapflights users on 12/19. 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.
Sat 12/2010:22 pmCLT - ONT
1 stop12h 02mFrontier
Fri 12/266:20 pmONT - CLT
1 stop24h 33mFrontier
Deal found 12/19$353
This CheapOair deal was found by Cheapflights users on 12/19. 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.
Sat 12/2010:22 pmCLT - ONT
1 stop12h 02mFrontier
Sun 1/48:19 amONT - CLT
1 stop6h 45mFrontier
Deal found 12/19$354
This Frontier deal was found by Cheapflights users on 12/19. 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.
Mon 12/228:39 pmCLT - ONT
1 stop13h 45mFrontier
Wed 12/246:45 amONT - CLT
1 stop6h 34mFrontier
Deal found 12/19$363
This Delta deal was found by Cheapflights users on 12/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:12 pmCLT - ONT
1 stop7h 21mDelta
Thu 12/257:05 amONT - CLT
1 stop9h 05mDelta
Deal found 12/19$383
This CheapOair deal was found by Cheapflights users on 12/19. 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.
Sat 12/2010:22 pmCLT - ONT
1 stop12h 02mFrontier
Mon 12/226:45 amONT - CLT
1 stop25h 37mFrontier
Deal found 12/19$384
This Delta deal was found by Cheapflights users on 12/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:12 pmCLT - ONT
1 stop7h 21mDelta
Tue 12/3011:10 amONT - CLT
1 stop6h 09mDelta
Deal found 12/19$408
This Delta deal was found by Cheapflights users on 12/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:12 pmCLT - ONT
1 stop7h 21mDelta
Wed 12/317:05 amONT - CLT
2 stops11h 45mDelta
Deal found 12/19$413
This CheapOair deal was found by Cheapflights users on 12/20. 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.
Wed 12/315:14 pmCLT - ONT
1 stop9h 45mFrontier
Sat 1/36:45 amONT - CLT
1 stop25h 37mFrontier
Deal found 12/20$414

Find 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 December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$166
(CheapOair)

One-way from

$91
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$539

Good round-trip deal

$410 or less
Provider with most accurate pricing for Charlotte Douglas-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Charlotte Douglas-Ontario flights.
Search Deals
From Charlotte Douglas to Ontario
Search Deals
One-way flight from Charlotte Douglas to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Charlotte Douglas to Ontario.
Search Deals

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 December 21, 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

Thu 1/29

8:20 pm-12:20 am

2 stops31h 00m

Ontario

Mon 2/2

6:20 am-4:18 pm

1 stop6h 58m

$236

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Sun 1/25

5:47 pm-12:43 pm

1 stop21h 56m

Ontario

Fri 1/30

6:20 am-4:18 pm

1 stop6h 58m

$253

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Mon 1/5

12:17 pm-11:59 pm

1 stop14h 42m

Ontario

Mon 1/12

6:00 am-5:55 pm

1 stop8h 55m

$254

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 1/16

7:37 pm-11:59 pm

1 stop7h 22m

Ontario

Sun 1/18

6:10 am-5:58 pm

1 stop8h 48m

$286

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Sun 1/25

10:15 am-12:20 am

2 stops17h 05m

Ontario

Sun 2/1

10:13 am-9:04 pm

1 stop7h 51m

$311

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Wed 12/31

5:14 pm-11:59 pm

1 stop9h 45m

Ontario

Sun 1/4

8:19 am-6:04 pm

1 stop6h 45m

$353

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Tue 2/10

1:35 pm-9:05 pm

2 stops10h 30m

Ontario

Tue 2/17

5:50 am-3:35 pm

1 stop6h 45m

$358

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Fri 3/6

8:00 am-3:40 pm

2 stops10h 40m

Ontario

Sat 3/14

9:55 pm-10:00 am

1 stop9h 05m

$370

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Mon 1/26

1:35 pm-9:05 pm

2 stops10h 30m

Ontario

Sat 1/31

5:30 am-4:40 pm

2 stops8h 10m

$394

CharlotteOntario

CLT - ONT

CLTONT

Charlotte Douglas

Thu 2/12

2:26 pm-9:05 pm

1 stop9h 39m

Ontario

Tue 2/17

10:20 pm-8:40 am

1 stop7h 20m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Charlotte to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Charlotte to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Charlotte-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Charlotte-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Charlotte-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Charlotte-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Charlotte-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 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, June is the cheapest month in which you can book a flight from Charlotte to Ontario (average of $105). Flying from Charlotte to Ontario in April is currently the most expensive (average of $198). 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 December 21, 2025.

It’s optimal to fly from Charlotte to Ontario in the evening. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the afternoon.

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 December 21, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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
4,258 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

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
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

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
7.9
Good
8,021 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

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.
United Airlines
7.4
Good
9,100 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

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
11,050 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

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
8,194 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.1

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 5h 07m 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 $166, Frontier can have you in Ontario from Charlotte in 28h 25m. Charlotte and Ontario are separated by a distance of 2072 mi.

  • 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 Delta - these airlines can fly you to your destination from $165 and $276, 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 airlines to fly from Charlotte to Ontario one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $78. Delta flights start at $138 while deals on United Airlines start at $148 one-way.

  • What are the cheapest flights from Charlotte to Ontario?

    The cheapest flight price from Charlotte to Ontario is $361. On average you can expect to pay $463. The most popular route, (Charlotte Douglas - Ontario), can usually be booked for $218.

  • 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, June is the cheapest month in which you can book a flight from Charlotte to Ontario (average of $105). Flying from Charlotte to Ontario in April is currently the most expensive (average of $198). 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$45Average$263FlexibilityNo cancel feeOn-time65%
FrontierCheapest$165Average$230FlexibilityNo cancel feeOn-time62%
DeltaCheapest$276Average$355FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$293Average$384FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$296Average$418FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$306Average$429FlexibilityNo cancel feeOn-time69%

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