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$65+ Cheap flights from Durham, NC to Ontario (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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ONT
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Durham to Ontario are usually found in October or November, booked 29 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from Durham to Ontario

Keep the following information in mind while searching for Durham to Ontario flight deals. Data was last updated October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$65
(CheapOair)

Popular in

December

Cheapest in

October

Average price

$343
Provider with most accurate pricing for Raleigh-Durham-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Raleigh-Durham-Los Angeles flights.
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From Durham to Ontario
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One-way flight from Durham to Ontario
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Highest demand for flights based on searches. 8% potential increase in price ($39 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 October 2025
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Find flight deals from Durham to Ontario

Cheapest flights from Durham to Ontario
Explore the most affordable flight options available from Durham to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This CheapOair deal was found by Cheapflights users on 10/30. 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 11/135:51 pmRDU - ONT
1 stop27h 58mFrontier
Mon 11/177:54 amONT - RDU
1 stop13h 01mFrontier
Deal found 10/30$130
This CheapOair deal was found by Cheapflights users on 10/30. 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 11/145:21 pmRDU - ONT
1 stop20h 49mFrontier
Sun 11/161:46 pmONT - RDU
1 stop28h 25mFrontier
Deal found 10/30$144
This CheapOair deal was found by Cheapflights users on 10/28. 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 12/116:26 pmRDU - ONT
1 stop22h 59mFrontier
Sat 12/133:20 pmONT - RDU
1 stop23h 11mFrontier
Deal found 10/28$170
This CheapOair deal was found by Cheapflights users on 10/28. 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 11/175:21 pmRDU - ONT
1 stop9h 29mFrontier
Thu 11/2012:23 pmONT - RDU
1 stop25h 08mFrontier
Deal found 10/28$176
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:09 amRDU - ONT
1 stop10h 25mFrontier
Tue 12/912:30 pmONT - RDU
2 stops32h 42mFrontier
Deal found 10/28$181
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:09 amRDU - ONT
1 stop10h 25mFrontier
Fri 12/125:18 pmONT - RDU
2 stops27h 54mFrontier
Deal found 10/30$201
This Frontier deal was found by Cheapflights users on 10/30. 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 11/166:00 amRDU - ONT
1 stop11h 45mFrontier
Wed 11/1912:58 amONT - RDU
1 stop12h 33mFrontier
Deal found 10/30$213
This CheapOair deal was found by Cheapflights users on 10/28. 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 11/275:20 pmRDU - ONT
1 stop9h 37mFrontier
Thu 12/47:33 pmONT - RDU
1 stop10h 40mFrontier
Deal found 10/28$231
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:10 amRDU - ONT
2 stops18h 19mFrontier
Sun 11/161:46 pmONT - RDU
1 stop28h 25mFrontier
Deal found 10/28$239
This CheapOair deal was found by Cheapflights users on 10/28. 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 12/46:26 pmRDU - ONT
1 stop22h 59mFrontier
Sun 12/74:01 pmONT - RDU
1 stop22h 30mFrontier
Deal found 10/28$246

Cheapflights Fare Finder

 
Customize your flight search to find flights from Durham 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 October 30, 2025.
Use the filters below to find and compare flights from Durham to Ontario that are best for you.

Fly from

Durham

Fly to

Ontario

Route

Depart

Return

Price

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Fri 12/12

10:09 am-5:34 pm

1 stop10h 25m

Ontario

Sun 1/18

6:00 am-6:44 pm

1 stop9h 44m

$322

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Mon 12/15

7:35 pm-11:58 pm

1 stop7h 23m

Ontario

Tue 1/20

10:30 pm-9:55 am

1 stop8h 25m

$334

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Wed 1/21

7:00 am-12:16 pm

1 stop8h 16m

Ontario

Sat 1/24

7:30 am-11:42 pm

2 stops13h 12m

$337

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Sat 12/13

5:20 pm-9:55 pm

1 stop7h 35m

Ontario

Sat 1/17

1:10 pm-11:48 pm

1 stop7h 38m

$342

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Sat 12/13

5:20 pm-9:55 pm

1 stop7h 35m

Ontario

Tue 1/20

10:30 pm-9:55 am

1 stop8h 25m

$342

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Mon 11/17

5:21 pm-11:50 pm

1 stop9h 29m

Ontario

Sat 11/22

12:58 am-4:31 pm

1 stop12h 33m

$349

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Mon 12/15

7:35 pm-11:58 pm

1 stop7h 23m

Ontario

Wed 1/21

1:10 pm-11:48 pm

1 stop7h 38m

$351

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Tue 12/16

5:15 am-11:02 am

1 stop8h 47m

Ontario

Mon 1/19

10:30 pm-9:55 am

1 stop8h 25m

$351

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Tue 1/6

7:00 am-12:16 pm

1 stop8h 16m

Ontario

Fri 1/16

10:30 pm-10:08 am

1 stop8h 38m

$353

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Wed 1/21

7:04 pm-10:59 am

1 stop18h 55m

Ontario

Sat 1/24

11:53 am-6:04 pm

1 stop27h 11m

$358

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Durham to Ontario. Price data was last updated on October 24, 2025.

The price you pay for your flight from Durham to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Durham to Ontario (average of $132). Flying from Durham to Ontario in June is currently the most expensive (average of $189). 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 DU8 to ONT?

Find hourly flight availability from Durham 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 October 30, 2025.

It’s optimal to fly from Durham to Ontario in the evening. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at noon.

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

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

Travelers seeking maximum savings on their Durham to Ontario flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon 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 October 30, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Durham to Ontario 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
4,243 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

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
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

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
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

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
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

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 Durham to Ontario. 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 into for flights to Ontario from Durham?

    For a flight from Durham to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 0 inbound flights from Durham per day. 5 airlines have flights to Ontario from Durham on a regular basis.

  • How long is the flight from Durham to Ontario?

    Departing from Durham to Ontario will take you 7h 23m. The distance between Durham and Ontario is about 2185 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Durham to Ontario (average of $132). Flying from Durham to Ontario in June is currently the most expensive (average of $189). 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 Durham to Ontario

Discover the top 5 airlines that operate flights from Durham 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$275FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$266Average$439FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$285Average$452FlexibilityNo cancel feeOn-time69%
DeltaCheapest$296Average$469FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$324Average$463FlexibilityNo cancel feeOn-time63%

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