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Durham

$85+ Cheap flights from Ontario (ONT) to Durham, NC

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — RDU
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Durham are usually found in August or July, booked 85 days in advance, depart on a Wednesday or Friday and return on a Monday

Cheap flight deals from Ontario to Durham

Keep the following information in mind while searching for Ontario to Durham flight deals. Data was last updated September 15, 2025.

Round-trip from

$159
(Booking.com)

One-way from

$85
(Trip.com)

Popular in

November

Cheapest in

August

Average price

$511
From Ontario to Durham
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One-way flight from Ontario to Durham
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Highest demand for flights based on searches. 12% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Durham

Cheapest flights from Ontario to Durham
Explore the most affordable flight options available from Ontario to Durham. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/512:28 pmONT - RDU
1 stop29h 07mFrontier
Thu 10/96:42 pmRDU - ONT
1 stop24h 46mFrontier
Deal found 9/13$159
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.
Thu 10/96:53 amONT - RDU
1 stop6h 51mFrontier
Thu 10/166:42 pmRDU - ONT
1 stop24h 46mFrontier
Deal found 9/14$160
This Frontier deal was found by Cheapflights users on 9/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/148:24 amONT - RDU
1 stop12h 31mFrontier
Sun 11/166:00 amRDU - ONT
1 stop11h 45mFrontier
Deal found 9/13$169
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:59 pmONT - RDU
1 stop16h 29mFrontier
Mon 9/295:23 pmRDU - ONT
1 stop29h 31mFrontier
Deal found 9/13$170
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:28 pmONT - RDU
1 stop29h 02mFrontier
Sat 10/117:51 pmRDU - ONT
1 stop24h 58mFrontier
Deal found 9/13$178
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/118:34 amONT - RDU
1 stop22h 48mFrontier
Sat 10/187:51 pmRDU - ONT
1 stop24h 58mFrontier
Deal found 9/13$179
This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:28 pmONT - RDU
1 stop29h 02mFrontier
Mon 10/65:23 pmRDU - ONT
1 stop7h 50mFrontier
Deal found 9/13$189
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.
Thu 10/212:28 pmONT - RDU
1 stop29h 02mFrontier
Sun 10/510:53 amRDU - ONT
1 stop10h 22mFrontier
Deal found 9/14$191
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.
Sat 11/112:05 pmONT - RDU
1 stop26h 31mFrontier
Mon 11/35:21 pmRDU - ONT
1 stop9h 29mFrontier
Deal found 9/14$192
This Frontier deal was found by Cheapflights users on 9/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:59 pmONT - RDU
2 stops14h 51mFrontier
Sat 10/115:59 pmRDU - ONT
1 stop8h 51mFrontier
Deal found 9/13$198
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:15 pmONT - RDU
1 stop11h 48mFrontier
Sun 9/2810:53 amRDU - ONT
1 stop10h 22mFrontier
Deal found 9/14$202

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Durham 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 15, 2025.
Use the filters below to find and compare flights from Ontario to Durham that are best for you.

Fly from

Ontario

Fly to

Durham

Route

Depart

Return

Price

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Sun 10/5

12:28 pm-8:35 pm

1 stop29h 07m

Raleigh-Durham

Thu 10/9

6:42 pm-4:28 pm

1 stop24h 46m

$159

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Tue 11/4

6:50 am-4:25 pm

1 stop6h 35m

Raleigh-Durham

Fri 11/7

12:20 pm-5:15 pm

1 stop7h 55m

$293

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Wed 10/22

11:48 am-11:48 pm

1 stop9h 00m

Raleigh-Durham

Fri 10/24

6:55 pm-11:39 pm

1 stop7h 44m

$297

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Sat 10/25

6:00 am-3:51 pm

1 stop6h 51m

Raleigh-Durham

Wed 10/29

6:18 am-10:26 am

1 stop7h 08m

$297

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Tue 10/21

10:00 pm-8:48 am

1 stop7h 48m

Raleigh-Durham

Fri 10/24

6:55 pm-11:39 pm

1 stop7h 44m

$297

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Sat 10/25

11:36 am-8:56 pm

1 stop6h 20m

Raleigh-Durham

Tue 10/28

6:18 am-10:26 am

1 stop7h 08m

$297

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Fri 10/10

6:27 pm-9:34 am

2 stops12h 07m

Raleigh-Durham

Tue 10/14

4:54 pm-9:24 pm

1 stop7h 30m

$298

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Thu 9/25

3:43 pm-10:03 am

2 stops15h 20m

Raleigh-Durham

Sun 9/28

10:53 am-3:24 pm

1 stop7h 31m

$305

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Tue 11/4

7:35 am-12:17 am

2 stops13h 42m

Raleigh-Durham

Fri 11/7

1:08 pm-10:22 pm

2 stops12h 14m

$307

OntarioRaleigh

ONT - RDU

ONTRDU

Ontario

Wed 10/22

7:35 am-10:58 pm

2 stops12h 23m

Raleigh-Durham

Wed 10/29

6:00 am-5:10 pm

2 stops14h 10m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 23 results
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Best time to book a flight from Ontario to Durham

Have a flexible travel schedule? Discover the best time to fly to Durham from Ontario 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 Ontario to Durham

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

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

To ensure you get the cheapest price possible for a flight from Ontario to Durham, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Durham (average of $206). Flying from Ontario to Durham in March is currently the most expensive (average of $293). 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 ONT to DU8?

Find hourly flight availability from Ontario to Durham. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Durham as you normally would.

Reviews of airlines servicing Durham

Get insights into the airlines that provide service to Durham. 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 Durham. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Ontario to Durham to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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 Ontario to Durham. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Durham?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Durham. You should not have trouble finding flights to Durham from Ontario; the airport handles an average of 0 outbound flights to Durham per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Ontario airport to Durham. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Durham?

    There are many flights that can get you from Ontario to Durham in 6h 35m. Fly via Frontier, Southwest, or Delta to get the fastest option. Ontario and Durham are separated by a distance of 2185 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Durham 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 Ontario to Durham?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Durham (average of $206). Flying from Ontario to Durham in March is currently the most expensive (average of $293). 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 5 airlines flying from Ontario to Durham

Discover the top 5 airlines that operate flights from Ontario to Durham. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$158Average$280FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$278Average$408FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$292Average$447FlexibilityNo cancel feeOn-time71%
DeltaCheapest$306Average$438FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$327Average$451FlexibilityNo cancel feeOn-time63%

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