What airlines fly to Ontario?

American Airlines, Delta and Southwest are the top three most popular airlines that fly to Ontario from Raleigh according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Raleigh and Ontario?

Houston (IAH) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Raleigh to Ontario?

Flights connecting via Charlotte (CLT) have the shortest average one-way travel time: 7h 47m.

Which layover airport offers the lowest fares from Raleigh to Ontario?

Flights via Houston (IAH) offer the lowest average round-trip price of $359.

What is the cheapest airline that flies from Raleigh-Durham to Ontario?

Frontier is the most popular carrier operating from Raleigh-Durham to Ontario

Which layover airport has the shortest connection time from Raleigh to Ontario?

Charlotte (CLT) has the shortest average layover time for this route: 1h 12m.

When did momondo last update prices for flights from Raleigh-Durham Airport to Ontario Airport?

Prices for flights from Raleigh-Durham Airport to Ontario Airport are updated daily.

How many operators does momondo search for flights from Raleigh-Durham Airport to Ontario Airport?

The number of operators available for flights from Raleigh-Durham Airport to Ontario Airport is 5 as of August 2026.

How old do you have to be to fly from Raleigh-Durham Airport to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Raleigh-Durham Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$115 Cheap Flights from Raleigh to Ontario in 2026

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12:48 pm - 11:55 pmRDU Raleigh-Durham-ONT Ontario

14h 07m1 stop Denver Intl

2:35 pm - 11:53 amONT Ontario-RDU Raleigh-Durham

18h 18m1 stop Denver Intl

$202Frontier

Mon, Nov 9 - Tue, Nov 10

12:21 pm - 4:46 pmRDU Raleigh-Durham-ONT Ontario

7h 25m1 stop Dallas/Fort Worth

6:15 am - 5:22 pmONT Ontario-RDU Raleigh-Durham

8h 07m1 stop Denver Intl

$223Frontier

Tue, Sep 29 - Wed, Sep 30

12:48 pm - 11:55 pmRDU Raleigh-Durham-ONT Ontario

14h 07m1 stop Denver Intl

9:43 pm - 10:00 amONT Ontario-RDU Raleigh-Durham

33h 17m2 stops Las Vegas Harry Reid Intl Orlando

$305Multiple Airlines

Thu, Nov 12 - Sun, Nov 15

7:00 am - 2:16 pmRDU Raleigh-Durham-ONT Ontario

10h 16m1 stop Seattle/Tacoma Intl

6:45 pm - 2:04 pmONT Ontario-RDU Raleigh-Durham

16h 19m1 stop Houston George Bush Intcntl

$331Multiple Airlines

Thu, Oct 1 - Thu, Oct 1

8:00 am - 1:30 pmRDU Raleigh-Durham-ONT Ontario

8h 30m1 stop Dallas/Fort Worth

1:05 pm - 10:52 pmONT Ontario-RDU Raleigh-Durham

6h 47m1 stop Phoenix Sky Harbor Intl

$336American Airlines

Tue, Oct 6 - Tue, Oct 13

7:30 pm - 11:48 pmRDU Raleigh-Durham-ONT Ontario

7h 18m1 stop Salt Lake City

7:00 am - 4:42 pmONT Ontario-RDU Raleigh-Durham

6h 42m1 stop Atlanta Hartsfield-Jackson

$337Delta

Mon, Dec 21 - Thu, Dec 31

7:00 am - 11:06 amRDU Raleigh-Durham-ONT Ontario

7h 06m1 stop Atlanta Hartsfield-Jackson

12:22 pm - 11:16 pmONT Ontario-RDU Raleigh-Durham

7h 54m1 stop Atlanta Hartsfield-Jackson

$337Delta

Tue, Nov 3 - Mon, Nov 16

7:20 pm - 11:40 pmRDU Raleigh-Durham-ONT Ontario

7h 20m1 stop Las Vegas Harry Reid Intl

9:00 am - 8:15 pmONT Ontario-RDU Raleigh-Durham

8h 15m1 stop Austin Bergstrom

$353Southwest

Sat, Nov 21 - Fri, Nov 27

5:55 pm - 11:40 pmRDU Raleigh-Durham-ONT Ontario

8h 45m2 stops Dallas Love Field Las Vegas Harry Reid Intl

7:30 am - 7:35 pmONT Ontario-RDU Raleigh-Durham

9h 05m1 stop Las Vegas Harry Reid Intl

$358Southwest

Sat, Nov 21 - Fri, Nov 27

6:10 am - 11:53 amRDU Raleigh-Durham-ONT Ontario

8h 43m1 stop Dallas/Fort Worth

9:29 am - 8:56 pmONT Ontario-RDU Raleigh-Durham

8h 27m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$366American Airlines

Wed, Oct 28 - Tue, Nov 3

Cheap last minute flights

Enter your travel dates to find the best prices.

7:54 pm - 11:50 pmRDU Raleigh-Durham-ONT Ontario

6h 56m1 stop Denver Intl

6:15 am - 5:22 pmONT Ontario-RDU Raleigh-Durham

8h 07m1 stop Denver Intl

$349Frontier

Thu, Aug 27 - Sat, Sep 12

10:26 pm - 8:38 amRDU Raleigh-Durham-ONT Ontario

13h 12m1 stop Dallas/Fort Worth

11:45 am - 11:10 amONT Ontario-RDU Raleigh-Durham

20h 25m2 stops Denver Intl Dallas/Fort Worth

$402Frontier

Thu, Aug 27 - Sat, Sep 12

10:26 pm - 8:38 amRDU Raleigh-Durham-ONT Ontario

13h 12m1 stop Dallas/Fort Worth

9:33 am - 9:04 pmONT Ontario-RDU Raleigh-Durham

8h 31m1 stop Houston George Bush Intcntl

$434Frontier

Thu, Aug 27 - Thu, Sep 3

7:54 pm - 11:50 pmRDU Raleigh-Durham-ONT Ontario

6h 56m1 stop Denver Intl

4:27 pm - 6:10 pmONT Ontario-RDU Raleigh-Durham

22h 43m2 stops Santa Rosa Sonoma County San Diego

$732Multiple Airlines

Thu, Aug 27 - Mon, Aug 31

7:02 am - 2:09 pmRDU Raleigh-Durham-ONT Ontario

10h 07m1 stop Seattle/Tacoma Intl

7:56 pm - 6:59 pmONT Ontario-RDU Raleigh-Durham

20h 03m1 stop Denver Intl

$746Multiple Airlines

Wed, Aug 26 - Wed, Aug 26

7:54 pm - 11:50 pmRDU Raleigh-Durham-ONT Ontario

6h 56m1 stop Denver Intl

4:27 pm - 6:10 pmONT Ontario-RDU Raleigh-Durham

22h 43m2 stops Santa Rosa Sonoma County San Diego

$837Multiple Airlines

Mon, Aug 24 - Wed, Aug 26

2:07 pm - 6:47 pmRDU Raleigh-Durham-ONT Ontario

7h 40m1 stop Dallas/Fort Worth

6:00 am - 6:34 pmONT Ontario-RDU Raleigh-Durham

9h 34m1 stop Dallas/Fort Worth

$841American Airlines

Tue, Aug 25 - Thu, Aug 27

4:42 pm - 10:59 pmRDU Raleigh-Durham-ONT Ontario

9h 17m1 stop Dallas/Fort Worth

7:05 am - 6:34 pmONT Ontario-RDU Raleigh-Durham

8h 29m1 stop Dallas/Fort Worth

$841American Airlines

Mon, Aug 24 - Thu, Aug 27

4:42 pm - 10:59 pmRDU Raleigh-Durham-ONT Ontario

9h 17m1 stop Dallas/Fort Worth

7:05 am - 6:34 pmONT Ontario-RDU Raleigh-Durham

8h 29m1 stop Dallas/Fort Worth

$895American Airlines

Mon, Aug 24 - Thu, Aug 27

8:06 am - 6:11 pmRDU Raleigh-Durham-ONT Ontario

13h 05m2 stops Chicago O'Hare Intl San Francisco

7:13 pm - 2:07 pmONT Ontario-RDU Raleigh-Durham

15h 54m2 stops San Francisco Chicago O'Hare Intl

$1,726United Airlines

Thu, Aug 27 - Thu, Sep 3

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Frontier flights from Raleigh to Ontario

Our best Frontier deals on Raleigh to Ontario flight tickets

Frontier

Nov 9

RDU12:48 pmRaleigh-Durham

14h 07m

1 stop

ONT11:55 pmOntario

Nov 10

ONT2:35 pmOntario

18h 18m

1 stop

RDU11:53 amRaleigh-Durham

$202

Frontier

Sep 29

RDU12:21 pmRaleigh-Durham

7h 25m

1 stop

ONT4:46 pmOntario

Sep 30

ONT6:15 amOntario

8h 07m

1 stop

RDU5:22 pmRaleigh-Durham

$223

Frontier

Sep 26

RDU6:17 pmRaleigh-Durham

8h 30m

1 stop

ONT11:47 pmOntario

Sep 30

ONT6:15 amOntario

8h 07m

1 stop

RDU5:22 pmRaleigh-Durham

$224

United Airlines flights from Raleigh to Ontario

Our best United Airlines deals on Raleigh to Ontario flight tickets

United Airlines

Sep 5

RDU10:05 amRaleigh-Durham

11h 07m

2 stops

ONT6:12 pmOntario

Oct 2

ONT9:25 amOntario

10h 20m

1 stop

RDU10:45 pmRaleigh-Durham

$488

United Airlines

Sep 5

RDU6:25 amRaleigh-Durham

14h 47m

2 stops

ONT6:12 pmOntario

Sep 6

ONT7:00 amOntario

7h 41m

1 stop

RDU5:41 pmRaleigh-Durham

$492

United Airlines

Sep 5

RDU10:05 amRaleigh-Durham

11h 07m

2 stops

ONT6:12 pmOntario

Sep 9

ONT5:00 amOntario

13h 49m

2 stops

RDU9:49 pmRaleigh-Durham

$497

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Mon 11/9

12:48 pm-11:55 pm

1 stop14h 07m

Ontario

Tue 11/10

2:35 pm-11:53 am

1 stop18h 18m

$202

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Tue 9/29

12:21 pm-4:46 pm

1 stop7h 25m

Ontario

Wed 9/30

6:15 am-5:22 pm

1 stop8h 07m

$223

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Thu 11/12

12:48 pm-11:55 pm

1 stop14h 07m

Ontario

Sun 11/15

9:43 pm-10:00 am

2 stops33h 17m

$305

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Thu 10/1

7:00 am-2:16 pm

1 stop10h 16m

Ontario

Thu 10/1

6:45 pm-2:04 pm

1 stop16h 19m

$331

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Tue 10/6

8:00 am-1:30 pm

1 stop8h 30m

Ontario

Tue 10/13

1:05 pm-10:52 pm

1 stop6h 47m

$336

Quickest round-trip

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Mon 12/21

7:30 pm-11:48 pm

1 stop7h 18m

Ontario

Thu 12/31

7:00 am-4:42 pm

1 stop6h 42m

$337

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Tue 11/3

7:00 am-11:06 am

1 stop7h 06m

Ontario

Mon 11/16

12:22 pm-11:16 pm

1 stop7h 54m

$337

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Sat 11/21

7:20 pm-11:40 pm

1 stop7h 20m

Ontario

Fri 11/27

9:00 am-8:15 pm

1 stop8h 15m

$353

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Sat 11/21

5:55 pm-11:40 pm

2 stops8h 45m

Ontario

Fri 11/27

7:30 am-7:35 pm

1 stop9h 05m

$358

RaleighOntario

RDU Raleigh-Durham - ONT Ontario

RDUONT

Raleigh-Durham

Wed 10/28

6:10 am-11:53 am

1 stop8h 43m

Ontario

Tue 11/3

9:29 am-8:56 pm

2 stops8h 27m

$366

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Raleigh to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Raleigh and Ontario?

Prices are currently low for flights on this route.

Typical prices usually range from $360 to $620.
The lowest price recently found on this route was $202.

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from Raleigh to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $268. If you aren’t able to travel during the month of January, then book flights to Ontario from Raleigh during October instead. Flights to Ontario in October, while not as cheap as those in January, still average around $322.

How far in advance should I book a flight from Raleigh to Ontario?

You are more likely to see cheaper flights to Ontario from Raleigh when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $426 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Raleigh for as low as $327 on momondo.

How have Raleigh to Ontario flight prices changed over time?

As of August 2026, prices for Raleigh to Ontario flights are approximately 34% more expensive when compared to flights at the same time last year.

When to book flights from Raleigh to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Raleigh to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Raleigh to Ontario (RDU to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Raleigh to Ontario

Best Price Found	$115
Fastest flight time	6h 44m
Direct flights	None

The best one-way flight to Ontario from Raleigh in the past 72 hours is $115. The best round-trip flight deal from Raleigh to Ontario found on momondo in the last 72 hours is $202.

The fastest flight from Raleigh to Ontario takes 6h 44m

There are no direct flights from Raleigh to Ontario. There are no popular flight routes from Raleigh to Ontario.

Search flight deals

Frequently asked questions about flying from Raleigh to Ontario

How far is Raleigh-Durham to Ontario by plane?
Raleigh-Durham and Ontario are 2197.3 mi apart from one another. Flights usually cover this in 6h 44m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Raleigh-Durham Airport to Ontario Airport?
Prices for flights from Raleigh-Durham Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Raleigh-Durham Airport to Ontario Airport?
The number of operators available for flights from Raleigh-Durham Airport to Ontario Airport is 5 as of August 2026.
How old do you have to be to fly from Raleigh-Durham Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Raleigh-Durham Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Raleigh to Ontario?
Based on momondo bookings for flights between Raleigh and Ontario, the leading airline is Southwest, making up 38% of the total bookings. Other popular airlines include American Airlines with 23%, Frontier with 18%, and Delta with 15%.

Best airlines flying from Raleigh to Ontario

Compare and see reviews for airlines that fly from Raleigh to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $165	Free Cancellation	Rating 5.6 2,657 reviews	Search Frontier flights
American Airlines	PriceFrom $266	Free Cancellation	Rating 7.1 11,990 reviews	Search American Airlines flights
United Airlines	PriceFrom $285	Free Cancellation	Rating 7.4 10,110 reviews	Search United Airlines flights
Delta	PriceFrom $296	Free Cancellation	Rating 7.8 8,516 reviews	Search Delta flights
Southwest	PriceFrom $322	Free Cancellation	Rating 8.0 4,215 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Raleigh to Ontario?

Finding the right flight to Ontario from Raleigh is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

Can I find flights from Raleigh to Ontario with flexible booking policies on momondo?

Flights from Raleigh to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Raleigh to Ontario?

Once you have performed a search for Raleigh to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Raleigh to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Raleigh to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

An easier way to manage your Ontario trip

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Cheap flights from Raleigh to Los Angeles from $115

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Raleigh to Los Angeles departing on 9/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Raleigh to Ontario

Our best Frontier deals on Raleigh to Ontario flight tickets

United Airlines flights from Raleigh to Ontario

Our best United Airlines deals on Raleigh to Ontario flight tickets

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How to get the cheapest flight ticket from Raleigh to Ontario

What is the typical price of a round-trip flight between Raleigh and Ontario?

What is the cheapest month to fly to Ontario?

How far in advance should I book a flight from Raleigh to Ontario?

How have Raleigh to Ontario flight prices changed over time?

What is the cheapest airline that flies from Raleigh-Durham to Ontario?

What airlines fly to Ontario?

Which airport is the most popular layover for flights between Raleigh and Ontario?

Which layover airport offers the lowest fares from Raleigh to Ontario?

Which layover airport has the shortest travel time from Raleigh to Ontario?

Which layover airport has the shortest connection time from Raleigh to Ontario?

When to book flights from Raleigh to Ontario

Cheap Raleigh to Ontario (RDU to ONT) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Raleigh to Ontario

Best airlines flying from Raleigh to Ontario

Compare and see reviews for airlines that fly from Raleigh to Ontario with momondo

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Los Angeles

List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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