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

The cheapest airlines for a one-way flight from Ontario to Durham are Frontier ($91), United Airlines ($118), and American Airlines ($144).

In terms of precipitation, rainfall in Durham ranges from 2.9 - 4.7 inches per month. July is typically the wettest month, when rainfall can reach 4.7 in. April is typically the driest time to visit Durham when rainfall is around 2.9 in.

If weather is an important factor for your trip to Durham, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What are the most popular airlines that fly from Ontario to Durham?

Southwest, American Airlines and Frontier are the most popular airlines when flying from Ontario to Durham.

What is the cheapest time of day to fly from ONT to DU8?

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.

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 6 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.

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.

Find Cheap Flights from Ontario to Durham

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Find flight deals from Ontario to Durham

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	September
Cheapest in	February
Average price	$422

Provider with most accurate pricing for Los Angeles-Raleigh-Durham flight deals.

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Provider most trusted by Cheapflights users for Los Angeles-Raleigh-Durham flights.

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Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Reviews of airlines servicing Durham

Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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

7.9

Good

4,214 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Southwest

7.9

Good

4,214 reviews

Southwest

7.9

Good

4,214 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

Delta

7.8

Good

8,650 reviews

Southwest

7.9

Good

4,214 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

United Airlines

7.4

Good

10,362 reviews

Southwest

7.9

Good

4,214 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

American Airlines

7.0

Good

12,165 reviews

Southwest

7.9

Good

4,214 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

Frontier

5.5

Fair

2,539 reviews

Southwest

7.9

Good

4,214 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

Related info for your journey

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 6 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.
What are the cheapest airlines to fly from Ontario to Durham one-way?
The cheapest airlines for a one-way flight from Ontario to Durham are Frontier ($91), United Airlines ($118), and American Airlines ($144).
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.

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Top 6 airlines flying from Ontario to Durham

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$158	Average$317	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$168	Average$524	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$256	Average$422	FlexibilityNo cancel fee	On-time69%
JetBlue	Cheapest$265	Average$357	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$292	Average$467	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$292	Average$572	FlexibilityNo cancel fee	On-time71%

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Find cheap flights from Ontario to Durham with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Ontario to Durham

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Durham

Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.

Related info for your journey

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

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

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

How can I find direct flights from Ontario to Durham?

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

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 Ontario to Durham

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Durham by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Ontario to Durham by cabin class

Find flights from Ontario to Durham, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ontario and Durham flights

Browse other Ontario and Durham flight options. Last updated on October 14, 2026.

Other flights from Ontario

Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Ontario to Durham flights

Consider these flights traveling from Ontario to Durham.

Top 6 airlines flying from Ontario to Durham

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Book with Flexibility

Travel Smart

Cheap flights from Ontario (ONT) to Durham, NC

Find cheap flights from Ontario to Durham with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Ontario to Durham

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Durham

Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.

Related info for your journey

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

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

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

How can I find direct flights from Ontario to Durham?

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

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 Ontario to Durham

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Durham by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Ontario to Durham by cabin class

Find flights from Ontario to Durham, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ontario and Durham flights

Browse other Ontario and Durham flight options. Last updated on October 14, 2026.

Other flights from Ontario

Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Ontario to Durham flights

Consider these flights traveling from Ontario to Durham.

Top 6 airlines flying from Ontario to Durham

100% Free

Book with Flexibility

Travel Smart