ONT - RDU

$72 Find Cheap Flights from Ontario to Raleigh

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Raleigh departing on 4/7. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Raleigh

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Raleigh, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Raleigh, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$164
Overall average: $299
Frontier
Sat 2/21Sat 2/28
ONT - RDU • 1 stop
Cheapest one-way
$72
Typical prices: $171-$303
Frontier
Tue 4/7
ONT - RDU • 1 stop
Top airlines
Frontier
Cheapest • from $164 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 21% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 23% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Raleigh!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Raleigh (ONT-RDU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Raleigh 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 Ontario to Raleigh

Sat, Feb 21 - Sat, Feb 28
Frontier Logo
6:00 am - 4:16 pm
ONT
-
RDU
7h 16m
1 stop
Frontier Logo
5:11 pm - 11:59 pm
RDU
-
ONT
9h 48m
1 stop
$164Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
6:05 am - 4:00 pm
ONT
-
RDU
6h 55m
1 stop
Frontier Logo
5:11 pm - 11:59 pm
RDU
-
ONT
9h 48m
1 stop
$168Frontier
Thu, Feb 19 - Mon, Feb 23
Frontier Logo
6:05 am - 4:00 pm
ONT
-
RDU
6h 55m
1 stop
Frontier Logo
5:11 pm - 11:59 pm
RDU
-
ONT
9h 48m
1 stop
$178Frontier
Sat, Feb 14 - Thu, Feb 19
Frontier Logo
6:00 am - 4:16 pm
ONT
-
RDU
7h 16m
1 stop
Frontier Logo
4:55 pm - 11:59 pm
RDU
-
ONT
10h 04m
1 stop
$180Frontier
Tue, Apr 7 - Mon, Apr 13
Frontier Logo
5:18 pm - 12:05 pm
ONT
-
RDU
15h 47m
1 stop
Frontier Logo
12:07 pm - 6:40 pm
RDU
-
ONT
9h 33m
1 stop
$190Frontier
Wed, Apr 15 - Mon, Apr 20
Frontier Logo
12:59 am - 9:04 pm
ONT
-
RDU
17h 05m
1 stop
Frontier Logo
9:59 pm - 11:55 pm
RDU
-
ONT
28h 56m
1 stop
$191Frontier
Sat, Feb 28 - Mon, Mar 9
Frontier Logo
6:00 am - 4:16 pm
ONT
-
RDU
7h 16m
1 stop
Frontier Logo
6:22 pm - 11:59 pm
RDU
-
ONT
8h 37m
1 stop
$193Frontier
Mon, Feb 9 - Sat, Feb 14
Frontier Logo
6:20 am - 6:44 pm
ONT
-
RDU
9h 24m
1 stop
Frontier Logo
5:11 pm - 11:59 pm
RDU
-
ONT
9h 48m
1 stop
$201Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
7:22 pm - 3:34 pm
ONT
-
RDU
17h 12m
2 stops
Frontier Logo
5:11 pm - 9:34 pm
RDU
-
ONT
31h 23m
1 stop
$204Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
7:22 pm - 3:34 pm
ONT
-
RDU
17h 12m
2 stops
Frontier Logo
5:11 pm - 9:34 pm
RDU
-
ONT
31h 23m
1 stop
$205Frontier
Booking Insights

KAYAK's insights & trends for Ontario to Raleigh flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Raleigh, 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 Ontario to Raleigh is February, where tickets cost $299 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $616 and $482 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Raleigh, 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 Ontario to Raleigh, you should book around 4 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$72
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Ontario to Raleigh

When to book flights from Ontario to Raleigh

Are your dates flexible? Find out the best times to travel from Ontario to Raleigh 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 Ontario to Raleigh

  • What is the cheapest flight from Ontario to Raleigh?

    In the last 3 days, the lowest price for a flight from Ontario to Raleigh was $72 for a one-way ticket and $164 for a round-trip.

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

    No

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

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

  • Which airline alliances offer flights from Ontario to Raleigh?

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Raleigh are Southwest and Delta. With an average price for the route of $449 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 $380 and an overall rating of 7.9.

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

    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 Ontario to Raleigh.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Raleigh from Ontario 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 Ontario to Raleigh?

    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 Raleigh with an airline and back to Ontario with another airline. Booking your flights between Ontario and RDU 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 Ontario to Raleigh?

    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 Raleigh from Ontario 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 Ontario to Raleigh

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Raleigh. 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 Ontario to Raleigh? 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 4268 reviews
8.6Crew
8.0Comfort
7.5Entertainment
8.1Boarding
7.0Food
Airline reviews

Great flight but super high price. Glad it was a business trip and not personal

10.0 ExcellentPieter, Jan 2026
LGB - DAL
Read more Southwest reviews

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

We got exit row seats both flights. Everything was running on time

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Premium Plus is a really good idea for longer flights

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

It was a good trip. Flight Attendants were friendly and responsive.

Crew in Columbia was not prepared for landing. It was a bit of a disaster and getting bags took forever.

Tell the crew (when boarding) to yell at the imbeciles blocking us from walking up to scan. I promise everyone crowds around and half of us (most the time I’m group 4) have to push our way through. Your staff is awesome, the public - not so much-

It was fine. My connection in Charlotte to go to WPB was too late and I had to spend the night in the Charlotte Airport in the mini suites.

The flight was on time and arrived early. The crew were friendly and helpful.

Nothing to write home about, average flight experience. Seats were spacious enough, crew friendly enough. Loved the AA entertainment/wifi service.

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

Did not understand a single word the attendant said on the pa system. I was glad it was not an emergency.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

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

Information on your arrival and departure airports