RDU - ONT

$118 Find Cheap Flights from Raleigh to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Raleigh to Ontario departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$240
Typical prices: $330-$506
Frontier
Thu 8/27Wed 9/2
RDU - ONT • 1 stop
Cheapest one-way
$118
Typical prices: $139-$348
Frontier
Thu 8/20
RDU - ONT • 1 stop
Top airlines
Cheapest • from $240 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Raleigh and Ontario. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $331 (round-trip)
Shortest trip • 7h 09m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
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Insights
When to travel
Cheapest • 35% price drop
Most popular
Good to know
Good to know
+1
+1
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Good to know
+1
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We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Raleigh to Ontario (RDU-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Raleigh to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Raleigh to Ontario

Thu, Aug 27 - Wed, Sep 2
Frontier Logo
7:54 pm - 11:50 pm
RDU
-
ONT
6h 56m
1 stop
Frontier Logo
6:00 am - 7:09 pm
ONT
-
RDU
10h 09m
1 stop
$240Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
10:11 am - 7:32 am
RDU
-
ONT
24h 21m
1 stop
Frontier Logo
7:56 pm - 6:59 pm
ONT
-
RDU
20h 03m
1 stop
$241Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
7:54 pm - 11:50 pm
RDU
-
ONT
6h 56m
1 stop
Frontier Logo
6:00 am - 7:09 pm
ONT
-
RDU
10h 09m
1 stop
$242Frontier
Sat, Oct 10 - Tue, Oct 13
Frontier Logo
12:18 pm - 11:55 pm
RDU
-
ONT
14h 37m
1 stop
Frontier Logo
6:00 am - 11:23 am
ONT
-
RDU
26h 23m
1 stop
$247Frontier
Thu, Aug 6 - Thu, Aug 13
Frontier Logo
10:20 am - 7:32 am
RDU
-
ONT
24h 12m
1 stop
Frontier Logo
6:00 am - 11:31 am
ONT
-
RDU
26h 31m
1 stop
$248Frontier
Sat, Aug 8 - Tue, Aug 18
Frontier Logo
10:11 am - 7:32 am
RDU
-
ONT
24h 21m
1 stop
Frontier Logo
10:59 am - 7:21 pm
ONT
-
RDU
29h 22m
1 stop
$250Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
10:11 am - 7:32 am
RDU
-
ONT
24h 21m
1 stop
Frontier Logo
7:56 pm - 6:59 pm
ONT
-
RDU
20h 03m
1 stop
$253Frontier
Thu, Aug 6 - Tue, Aug 11
Frontier Logo
10:20 am - 7:32 am
RDU
-
ONT
24h 12m
1 stop
Frontier Logo
6:00 am - 11:31 am
ONT
-
RDU
26h 31m
1 stop
$256Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
10:11 am - 7:32 am
RDU
-
ONT
24h 21m
1 stop
Frontier Logo
7:56 pm - 6:59 pm
ONT
-
RDU
20h 03m
1 stop
$275Frontier
Sun, Aug 30 - Thu, Sep 3
Frontier Logo
10:26 pm - 8:38 am
RDU
-
ONT
13h 12m
1 stop
Frontier Logo
9:33 am - 9:04 pm
ONT
-
RDU
8h 31m
1 stop
$279Frontier
Booking Insights

KAYAK's insights & trends for Raleigh to Ontario flights

Get data-powered insights and trends into flights from Raleigh to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Raleigh to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Raleigh to Ontario departing in August.

What is the cheapest month to fly from Raleigh to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Raleigh to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Raleigh to Ontario is January, where tickets cost $268 (return) on average. On the other hand, the most expensive months are July and February, where the average cost of round-trip tickets is $536 and $505 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Raleigh to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Raleigh to Ontario, you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low season

January

Cheapest flight

$118
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Raleigh to Ontario

When to book flights from Raleigh to Ontario

Are your dates flexible? Find out the best times to travel from Raleigh to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Raleigh to Ontario

  • What is the cheapest flight from Raleigh to Ontario?

    In the last 5 days, the lowest price for a flight from Raleigh to Ontario was $118 for a one-way ticket and $240 for a round-trip.

  • Do I need a passport to fly between Raleigh and Ontario?

    No

  • Which airports will I be using when flying from Raleigh to Ontario?

    Raleigh airport is called Raleigh-Durham and the only airport in Ontario is Ontario.

  • Which aircraft models fly most regularly from Raleigh to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Raleigh to Ontario?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Raleigh and Ontario, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Raleigh to Ontario, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Raleigh to Ontario are Southwest and Delta. With an average price for the route of $480 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $413 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Raleigh to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Raleigh to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Raleigh to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Raleigh is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Raleigh to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Raleigh with another airline. Booking your flights between Raleigh and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Raleigh to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Raleigh up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Raleigh to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Raleigh to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Raleigh to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4243 reviews
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

2.0 MediocreIrene, Jun 2026
DEN - SFO
Read more Southwest reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

It was cancelled at the last minute. Left us scrambling. Totally unacceptable

Seats are tight. You pay extra to get to board early so you can sit with your companion. If not, you possibly will end up sitting in a middle seat if you are boarding group C.

Our flight to Oakland was great bc the plane was new but it was delayed by 15min not bad at all. Over all it was an 8/10

Lost cabin pressure and had go back to the originating airport. We were left sitting on the plane for more than 30 minutes with no directions from Southwest on what was going on, other than the app telling us there would be a flight at 12:30 AM. I finally got off and went directly to a SW desk and rebooked for the next day. I understand that malfunctions happen, but SW was totally unprepared to manage the situation and did not serve the passengers. To make matters worse, they took one hour to find my checked bag.

The flight in it self was good. The delays looking for pilots was unexpected.

Appreciate that when flight was delayed, our next connection waited for us.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Two delays on two separate planes with parts they could not easily find and replace.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Flight was 3 hours late so only had an OK experience

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

Flight was late. Club was full. Experience is exactly what I expected.

Everything would be much better if Kayak stopped nosing into my business with Delta.

I didn’t have a seat assignment and my seat was very dirty on the flight from Frankfurt to Budapest.

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Food is terrible. Flight is outdated and seats are not comfy.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

Boarding was easy. RDU gates can get crowded, be prepared to be patient. Flight was smooth, with excellent service. Pilots really provided a lot of visibility into flight details. Plane and seats were clean and serviceable. TY!

All flights were on time and boarding was issue free

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Got automatically assigned middle seats unless you fork out extra money for a seat assignment, not impressed.

Late by nearly 2 hours due to taking that long to change a tire on the plane.

It’s love good long way travel!! I always want more give me price down i want ever month travel I miss travel only North Carolina to Thailand in my love her !!

I found the seats ergonomically uncomfortable forcing the body to seat slightly hunched. For a short flight I worked on adjustments but for a longer flight, it would be difficult.

For some unknown reason, my checked bag didn't arrive at the same time. I got to my destination about 30 minutes late (5pm) and my bag was delivered to my hotel at 2:06am.... in the past 4 flights with AA, they been delayed and I've missed connections and my bags. Poor service.

Check in for 5am flight at RDU was hampered by American check in counters being seriously understaffed , was told even supervisor called out. Took so long in line for special services check in that we missed our 5am departure even after arriving at 3:30am. Had to be rescheduled to later flight from Charlotte to St Thomas.

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Amazing I love American. I’ll never fly anyone else if I can help it.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Everything was great except for the wifi was junk. Crew was super friendly and helpful

It was fine. I didn't love the food but it was at least a real attempt at serving a meal, unlike my earlier flight from Nashville to Dallas.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Flight got delayed for 3.5 hours, and for the first hour after the departure time there was no update from the gate folks...

Flight was cancelled and was not able to get another flight thru Frontier. Per frontier a refund was issued but I do not see a refund on my Afirm account.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

Attendance were to busy bull shitting to pay attention to the guest, had an attude problem.

Was charged 99 dollars for a bag despite agents previously telling me it would be ok. Customer service was unhelpful

I will like you ( Frontier Airlines) to fly into LAX instead of ONT because I live in LA and the subway takes me to my house in just 15 minutes

Everything you need to know for your flight from Raleigh to Ontario

Information on your arrival and departure airports