HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$91+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ONT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Durham to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Durham to Ontario are usually found in March or July, 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 September 15, 2025.

Round-trip from

$158
(CheapOair)

One-way from

$91
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$434
From Durham to Ontario
Search Deals
One-way flight from Durham to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 15, 2025.

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.
Thu 11/65:51 pmRDU - ONT
1 stop27h 58mFrontier
Sun 11/91:46 pmONT - RDU
1 stop28h 25mFrontier
Deal found 9/14$158
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 10/117:51 pmRDU - ONT
1 stop24h 58mFrontier
Sat 10/257:04 amONT - RDU
1 stop7h 00mFrontier
Deal found 9/13$159
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 10/35:23 pmRDU - ONT
1 stop29h 31mFrontier
Sun 10/57:15 pmONT - RDU
1 stop11h 48mFrontier
Deal found 9/14$160
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 10/235:39 pmRDU - ONT
1 stop9h 11mFrontier
Sat 10/257:04 amONT - RDU
1 stop7h 00mFrontier
Deal found 9/15$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 9/256:06 pmRDU - ONT
1 stop27h 29mFrontier
Sun 9/287:15 pmONT - RDU
1 stop11h 48mFrontier
Deal found 9/13$172
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 11/86:00 amRDU - ONT
1 stop27h 22mFrontier
Thu 11/137:22 amONT - RDU
1 stop13h 33mFrontier
Deal found 9/13$179
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:23 pmRDU - ONT
1 stop29h 31mFrontier
Sun 9/287:15 pmONT - RDU
1 stop11h 48mFrontier
Deal found 9/15$184
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:39 pmRDU - ONT
1 stop9h 11mFrontier
Sun 10/2612:49 pmONT - RDU
1 stop21h 43mFrontier
Deal found 9/15$189
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.
Sun 9/2810:53 amRDU - ONT
1 stop10h 22mFrontier
Sun 10/57:15 pmONT - RDU
1 stop11h 48mFrontier
Deal found 9/14$190
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 11/65:21 pmRDU - ONT
1 stop9h 29mFrontier
Sun 11/167:22 amONT - RDU
1 stop13h 33mFrontier
Deal found 9/15$200
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:39 pmRDU - ONT
1 stop9h 11mFrontier
Wed 10/296:53 amONT - RDU
2 stops28h 06mFrontier
Deal found 9/15$207

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 September 15, 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

Sat 10/25

5:59 pm-11:50 pm

1 stop8h 51m

Ontario

Sun 10/26

6:53 am-4:44 pm

1 stop6h 51m

$160

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Sun 11/9

5:21 pm-11:50 pm

1 stop9h 29m

Ontario

Thu 11/13

11:59 am-11:55 pm

1 stop8h 56m

$202

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Wed 10/22

3:42 pm-10:22 pm

1 stop9h 40m

Ontario

Sat 10/25

11:36 am-8:56 pm

1 stop6h 20m

$297

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Mon 10/6

5:39 pm-10:22 pm

1 stop7h 43m

Ontario

Wed 10/8

10:00 pm-9:50 am

1 stop8h 50m

$297

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Wed 11/12

6:15 am-10:40 am

1 stop7h 25m

Ontario

Sat 11/15

6:00 am-4:25 pm

1 stop7h 25m

$297

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Wed 10/29

4:45 pm-10:45 pm

2 stops9h 00m

Ontario

Sun 11/2

8:25 pm-7:50 am

2 stops8h 25m

$303

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Fri 11/14

4:00 pm-11:04 pm

1 stop10h 04m

Ontario

Wed 12/10

11:45 am-10:16 pm

1 stop7h 31m

$307

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Tue 11/18

5:41 pm-11:04 pm

1 stop8h 23m

Ontario

Wed 12/10

10:25 pm-9:57 am

1 stop8h 32m

$307

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Sat 11/15

5:20 pm-9:35 pm

1 stop7h 15m

Ontario

Mon 12/8

10:25 pm-8:53 am

1 stop7h 28m

$324

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

Fri 11/14

5:41 pm-11:04 pm

1 stop8h 23m

Ontario

Mon 12/8

10:25 pm-8:53 am

1 stop7h 28m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 23 results
1
2
3

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 September 12, 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, August is the cheapest month in which you can book a flight from Durham to Ontario (average of $246). Flying from Durham 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 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 September 15, 2025.

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

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. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Durham to Ontario?

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 15, 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
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

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

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

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

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

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

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

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.
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

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 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 8h 51m. The distance between Durham and Ontario is about 2185 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Durham to Ontario one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $91. However, be on the lookout for offers from Delta and Alaska Airlines, as they are both options that can get you from Durham to Ontario for a low price.

  • 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, August is the cheapest month in which you can book a flight from Durham to Ontario (average of $246). Flying from Durham 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Durham to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Raleigh to Las Vegas flights
Charlotte to Las Vegas flights
Raleigh to Los Angeles flights
Raleigh to San Francisco flights
Charlotte to Los Angeles flights
Charlotte to San Francisco flights
Norfolk to Las Vegas flights
Greensboro to Las Vegas flights
Charlotte to San Diego flights
Knoxville to Las Vegas flights
Charlotte to Ontario flights
Raleigh to Santa Ana flights
Norfolk to Los Angeles flights
Raleigh to Ontario flights
Charlotte to Sacramento flights
Charlotte to Santa Ana flights
Myrtle Beach to Las Vegas flights
Raleigh to San Diego flights
Knoxville to Los Angeles flights
Charlotte to Burbank flights
Greensboro to Los Angeles flights
Raleigh to Sacramento flights
Raleigh to San Jose flights
Asheville to San Diego flights
Norfolk to San Francisco flights
Knoxville to Sacramento flights
Wilmington to Las Vegas flights
Charlotte to Fresno flights
Knoxville to Ontario flights
Raleigh to Palm Springs flights
Raleigh to Burbank flights
Asheville to Las Vegas flights
Knoxville to San Diego flights
Blountville to Los Angeles flights
Charlotte to Palm Springs flights
Norfolk to Sacramento flights
Asheville to San Francisco flights
Knoxville to San Francisco flights
Greensboro to San Diego flights
Greensboro to Santa Ana flights
Wilmington to San Diego flights
Norfolk to Ontario flights
Norfolk to San Diego flights
Asheville to Los Angeles flights
Raleigh to Reno flights
Greensboro to Ontario flights
Charlotte to San Jose flights
Greensboro to Burbank flights
Asheville to Sacramento flights
Greensboro to San Jose flights

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$276FlexibilityNo cancel feeOn-time62%
DeltaCheapest$304Average$469FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$523FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$322Average$458FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$329Average$452FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.