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$81+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ONT
ene. 16 — ene. 231
vie. 1/16
vie. 1/23
1 adult, Economy
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Cheapflights Tip: The best prices from Durham to Ontario are usually found in October or March, booked 29 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap 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 diciembre 17, 2025.

This Frontier deal was found by Cheapflights users on 12/15. 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.
mié. 12/247:36 pmRDU - ONT
1 stop7h 23mFrontier
lun. 1/56:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/15$383
This Frontier deal was found by Cheapflights users on 12/16. 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.
mié. 12/317:36 pmRDU - ONT
1 stop7h 23mFrontier
lun. 1/56:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/16$413
This CheapOair deal was found by Cheapflights users on 12/16. 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.
mar. 12/308:51 pmRDU - ONT
1 stop23h 39mFrontier
lun. 1/56:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/16$434
This Frontier deal was found by Cheapflights users on 12/16. 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.
mié. 12/247:36 pmRDU - ONT
1 stop7h 23mFrontier
sáb. 12/276:45 amONT - RDU
1 stop6h 38mFrontier
Deal found 12/16$442
This Frontier deal was found by Cheapflights users on 12/16. 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.
mar. 12/237:36 pmRDU - ONT
1 stop7h 23mFrontier
vie. 1/236:20 amONT - RDU
1 stop9h 24mFrontier
Deal found 12/16$447
This Trip.com deal was found by Cheapflights users on 12/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/257:36 pmRDU - ONT
1 stop7h 23mFrontier
lun. 12/296:20 pmONT - RDU
1 stop22h 36mFrontier
Deal found 12/16$469
This Frontier deal was found by Cheapflights users on 12/15. 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.
mié. 12/247:36 pmRDU - ONT
1 stop7h 23mFrontier
dom. 1/46:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/15$472
This Frontier deal was found by Cheapflights users on 12/15. 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.
dom. 12/217:36 pmRDU - ONT
1 stop7h 23mFrontier
lun. 1/56:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/15$483
This Frontier deal was found by Cheapflights users on 12/15. 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.
mié. 12/247:36 pmRDU - ONT
1 stop7h 23mFrontier
vie. 1/26:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/15$492
This Expedia deal was found by Cheapflights users on 12/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:36 pmRDU - ONT
1 stop7h 23mFrontier
dom. 1/46:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/16$502
This CheapOair deal was found by Cheapflights users on 12/15. 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.
mar. 12/308:51 pmRDU - ONT
1 stop23h 39mFrontier
dom. 1/46:45 amONT - RDU
1 stop8h 56mFrontier
Deal found 12/15$523

Find flight deals from Durham to Ontario

Keep the following information in mind while searching for Durham to Ontario flight deals. Data was last updated diciembre 17, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$166
(CheapOair)

One-way from

$81
(CheapOair)

Popular in

February

Cheapest in

October

Average price

$486
Provider with most accurate pricing for Raleigh-Durham-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Raleigh-Durham-Los Angeles flights.
Search Deals
From Durham to Ontario
Search Deals
One-way flight from Durham to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 diciembre 17, 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

vie. 3/6

6:43 pm-12:01 am

1 stop8h 18m

Ontario

mié. 3/11

6:15 am-5:48 pm

1 stop8h 33m

$217

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

vie. 2/20

11:13 am-8:48 pm

1 stop12h 35m

Ontario

mié. 2/25

7:30 am-4:00 pm

1 stop29h 30m

$218

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

vie. 1/9

8:03 am-5:43 pm

2 stops12h 40m

Ontario

mar. 1/13

5:05 am-3:05 pm

1 stop7h 00m

$242

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

mar. 1/20

1:29 pm-9:59 pm

2 stops11h 30m

Ontario

vie. 1/23

5:05 am-6:52 pm

2 stops10h 47m

$247

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

mié. 1/14

7:36 am-1:56 pm

1 stop9h 20m

Ontario

jue. 1/22

10:30 pm-8:52 am

1 stop7h 22m

$267

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

jue. 1/8

7:36 am-1:56 pm

1 stop9h 20m

Ontario

sáb. 1/10

1:11 pm-11:48 pm

1 stop7h 37m

$267

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

dom. 1/18

7:36 am-1:56 pm

1 stop9h 20m

Ontario

sáb. 1/24

10:30 pm-8:52 am

1 stop7h 22m

$267

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

sáb. 1/24

7:15 am-1:56 pm

1 stop9h 41m

Ontario

sáb. 1/31

10:30 pm-8:52 am

1 stop7h 22m

$267

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

sáb. 1/24

7:15 am-1:56 pm

1 stop9h 41m

Ontario

vie. 1/30

10:30 pm-8:54 am

1 stop7h 24m

$267

RaleighOntario

RDU - ONT

RDUONT

Raleigh-Durham

mié. 1/21

7:36 am-1:56 pm

1 stop9h 20m

Ontario

mar. 1/27

10:30 pm-9:55 am

1 stop8h 25m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 20 results
1
2

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 December 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, January is the cheapest month in which you can book a flight from Durham to Ontario (average of $129). Flying from Durham to Ontario in December is currently the most expensive (average of $260). 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 diciembre 17, 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 diciembre 17, 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
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
8,008 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
9,092 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
11,049 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
3,082 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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 18m. 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 $85. However, be on the lookout for offers from American Airlines and United 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, January is the cheapest month in which you can book a flight from Durham to Ontario (average of $129). Flying from Durham to Ontario in December is currently the most expensive (average of $260). 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.

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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 diciembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$159Average$277FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$266Average$430FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$444FlexibilityNo cancel feeOn-time69%
DeltaCheapest$296Average$440FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$327Average$475FlexibilityNo cancel feeOn-time63%

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