Cheap Flight Tickets from Raleigh/Durham (RDU) to Ontario (ONT), Starting at $521

Good to Know: Cheapest and Fastest RDU - ONT Flights

Useful information for finding best airline tickets from Raleigh Durham International to Ontario International on your next trip.

Cheapest Round Trip Flight

$542

DL Delta Airlines • 1 stop • 13h 31m

Aug 05 – Aug 07

The cheapest round trip flight from Raleigh/Durham to Ontario (RDU-ONT-RDU) is currently $542

🔍 Search Flights

Cheapest One way Flight

$521

WN Southwest Airlines • 1 stop • 29h 15m

Jun 28

The cheapest one way flight from Raleigh/Durham to Ontario (RDU-ONT) is currently $521

🔍 Search Flights

Fastest Flight

11h 58m

The fastest nonstop flight from Raleigh/Durham to Ontario (RDU-ONT) takes 11h 58m

Top Airlines Flying from Raleigh/Durham to Ontario

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Latest Flight Deals from Raleigh/Durham (RDU) to Ontario (ONT)

Compare and book low fare round-trip air tickets from Raleigh/Durham to Ontario. Ideal for travelers with confirmed return itineraries.

Aug 05 - Aug 07, Economy
DL
Raleigh/Durham → Ontario
13h 31m
7:05 AM - 12:16 PM • 1 stop
DL
Raleigh/Durham → Ontario
11h 47m
12:00 PM - 10:07 PM • 1 stop
$542
Delta Airlines
Aug 05 - Aug 07, Economy
DL
Raleigh/Durham → Ontario
11h 58m
3:35 PM - 7:53 PM • 1 stop
DL
Raleigh/Durham → Ontario
11h 47m
12:00 PM - 10:07 PM • 1 stop
$542
Delta Airlines
Aug 05 - Aug 07, Economy
DL
Raleigh/Durham → Ontario
15h
1:53 PM - 7:53 PM • 1 stop
DL
Raleigh/Durham → Ontario
15h 42m
12:00 PM - 12:42 AM • 1 stop
$542
Delta Airlines
Aug 05 - Aug 07, Economy
DL
Raleigh/Durham → Ontario
13h 52m
5:10 AM - 10:42 AM • 1 stop
DL
Raleigh/Durham → Ontario
7h 38m
9:40 AM - 5:38 PM • nonstop
$588
Delta Airlines
Aug 05 - Aug 07, Economy
DL
Raleigh/Durham → Ontario
13h 31m
7:05 AM - 12:16 PM • 1 stop
DL
Raleigh/Durham → Ontario
7h 38m
9:40 AM - 5:38 PM • nonstop
$588
Delta Airlines
Aug 05 - Aug 07, Economy
DL
Raleigh/Durham → Ontario
11h 58m
3:35 PM - 7:53 PM • 1 stop
DL
Raleigh/Durham → Ontario
7h 38m
9:40 AM - 5:38 PM • nonstop
$588
Delta Airlines

Fly from Raleigh/Durham to Ontario with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Raleigh/Durham to Ontario? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Raleigh/Durham to Ontario Flights

What are the airports in Raleigh/Durham?
RDU
What’s the most popular airline flying from RDU to ONT?
The most popular airline flying from Raleigh/Durham to Ontario are
Can I fly from RDU to ONT non-stop?
NO
Which airlines fly nonstop between Raleigh/Durham and Ontario?
The non-stop flights between Raleigh/Durham and Ontario are .
What’s the earliest departure time from RDU to ONT Airport?
The earliest flight leaves RDU at 5:10 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Raleigh/Durham to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from RDU to ONT?
Read the fare rules of the Raleigh/Durham to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Raleigh/Durham and Ontario?
operate flights between Raleigh/Durham and Ontario
How long does a flight from Raleigh/Durham to Ontario take?
It takes approximately 5 hour to fly non-stop from RDU to ONT, which is 2191.66 miles by air.
Which airlines provide the cheapest flights from Raleigh/Durham (RDU) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from RDU were found on WN : USD 558
Do I need a passport to fly between RDU and ONT?
No
What’s the latest departure time from RDU to ONT ?
The last flight leaves RDU at 6:10 pm

Essential Information for Booking Flights from Raleigh/Durham (RDU) - AI Insights

What's the cheapest airline from rdu to ont?
For a one-way business class ticket from Raleigh Durham International Airport (RDU) to Ontario International Airport (ONT), consider booking at least 12 days in advance. You can find budget-friendly flights on Southwest Airlines (WN), which operates direct flights between the two airports. This option offers premium service with priority, lounge access, and flatbed seats.
What's the popular airline to fly from rdu to ont?
You can fly from Raleigh Durham International Airport (RDU) to Ontario International Airport (ONT) on Southwest Airlines. As a business class passenger, you'll enjoy priority check-in, lounge access, and flatbed seats. It's recommended to book at least 12 days in advance for the best Low Fares. You can find Budget-friendly flights with airfares starting from various airlines on fareleaders.com.
What's the cheapest day of the week to fly from rdu to ont?
The cheapest day to fly from Raleigh Durham International Airport (RDU) to Ontario International Airport (ONT) is Sunday. Flying on Sundays can result in budget-friendly flights, making it a great option for travelers looking for affordable airfares.
What's the cheapest month to fly from rdu to ont?
The cheapest month to fly from Raleigh Durham International Airport (RDU) to Ontario International Airport (ONT) is September. Flying during this time can help you save on airfare costs, making it a budget-friendly option.
Which airline/airlines fly from rdu to ont?
Frontier Airlines (F9) offers non-stop flights from Raleigh Durham International Airport (RDU) to Ontario International Airport (ONT). Delta Airlines (DL), Alaska Airlines (AS), United Airlines (UA), JetBlue Airways (B6), American Airlines (AA), and Southwest Airlines (WN) also operate flights with one or more stops. For the best deals, book in advance, ideally 12 days prior to your trip.
What is the cheapest airline to fly from Raleigh Durham International Airport (RDU) to Ontario International Airport (ONT)?
Southwest Airlines (WN)
How far in advance can I book my one-way business class flights with airlines?
Advance booking days: 12
Can I find affordable airfare options for my weekend getaway on fareleaders.com?
Yes, you can compare and select the best airlines for your Ontario International Airport (ONT) destination on fareleaders.com
What are the best ways to save money on airfares when booking flights online?
Use our website, web, viajes, and explore cheapairline options
Is it possible to get a cheap airline ticket with advance booking?
Yes, book your flight in September for the cheapest fares

Raleigh/Durham (RDU) to Ontario (ONT): Airport Information

Origin Airport Raleigh Durham International , Raleigh/Durham, US
Destination Airport Ontario International , Ontario, US
Distance 2192 miles

More Flight Options for Raleigh/Durham (RDU) and Ontario (ONT)

Why Fareleaders for RDU to ONT Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Raleigh/Durham to Ontario flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on RDU to ONT flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Raleigh/Durham to Ontario flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the Raleigh/Durham (RDU) to Ontario (ONT)
Terms and Conditions*