$69 Cheap Frontier Airlines flights Raleigh (RDU) to Ontario (ONT)

View $69 flight on Tue, Nov 25, 2025Opens in a new window

$69 Cheap Frontier Airlines flights Raleigh (RDU) to Ontario (ONT)

Prices were available within the past 7 days and start at $69 for one-way flights and $134 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Jan 8 - Fri, Jan 9
RDU
Raleigh
ONT
Ontario
$134 Roundtrip, found 2 days ago
$134
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Jan 8 from Raleigh to Ontario, returning Fri, Jan 9, priced at $134 found 2 days ago
Frontier Airlines
Thu, Jan 22 - Fri, Jan 30
RDU
Raleigh
ONT
Ontario
$138 Roundtrip, found 5 hours ago
$138
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Jan 22 from Raleigh to Ontario, returning Fri, Jan 30, priced at $138 found 5 hours ago
Frontier Airlines
Mon, Jan 12 - Thu, Jan 15
RDU
Raleigh
ONT
Ontario
$140 Roundtrip, found 20 hours ago
$140
Roundtrip
found 20 hours ago
Select Frontier Airlines flight, departing Mon, Jan 12 from Raleigh to Ontario, returning Thu, Jan 15, priced at $140 found 20 hours ago
Frontier Airlines
Mon, Nov 24 - Thu, Nov 27
RDU
Raleigh
ONT
Ontario
$141 Roundtrip, found 10 hours ago
$141
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Mon, Nov 24 from Raleigh to Ontario, returning Thu, Nov 27, priced at $141 found 10 hours ago
Frontier Airlines
Thu, Jan 8 - Fri, Jan 9
RDU
Raleigh
ONT
Ontario
$142 Roundtrip, found 2 days ago
$142
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Jan 8 from Raleigh to Ontario, returning Fri, Jan 9, priced at $142 found 2 days ago
Frontier Airlines
Sat, Nov 22 - Sun, Nov 23
RDU
Raleigh
ONT
Ontario
$144 Roundtrip, just found
$144
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Nov 22 from Raleigh to Ontario, returning Sun, Nov 23, priced at $144 just found
Flights from Raleigh (RDU) to Ontario (ONT)
Origin airport
Raleigh - Durham Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, United
Popular airline
American Airlines
Distance
2185 mi

Frequently asked questions

How much is a Frontier Airlines flight from Raleigh - Durham Intl. Airport (RDU) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the "Price (lowest to highest)" filter on Expedia to look for cheap Frontier Airlines return flights from $134 from RDU to ONT. Affordable one-way tickets from $69 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from RDU to ONT with Frontier Airlines?
Browse for one-way or round-trip flights to Ontario in January or April. You could find an affordable fare with Frontier Airlines during these quieter months.
What is the cheapest time to book flights from Raleigh - Durham Intl. Airport (RDU) to Los Angeles - Ontario Intl. Airport (ONT) with Frontier Airlines?
For cheap Frontier Airlines fares from Raleigh - Durham Intl. Airport (RDU) to Los Angeles - Ontario Intl. Airport (ONT), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the overall cost. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Frontier Airlines fly nonstop from Raleigh - Durham Intl. Airport (RDU) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the "Nonstop" filter when looking for direct Frontier Airlines flights from RDU to ONT. It's also an easy way to compare other airlines servicing the same direct route.
What is the earliest Frontier Airlines flight from RDU to ONT?
Find Frontier Airlines's earliest flights from RDU to ONT by using our "Morning" and "Early Morning" filters. Not only will you get to your destination sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Frontier Airlines fly into in Ontario?
Hop on a Frontier Airlines flight from Raleigh - Durham Intl. Airport (RDU) to Ontario, and you'll probably come in to Los Angeles - Ontario Intl. Airport (ONT). This is the airline's main hub here.
Why fly with Frontier Airlines from RDU to ONT?
A rewarding loyalty program and the opportunity to collect points through Frontier Miles are the start of the reasons to leave from RDU to ONT with Frontier Airlines. Plus, when you join our One Key™ program, you can receive OneKeyCash™* alongside any airline loyalty program earnings. It's yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Frontier Airlines flight from Raleigh - Durham Intl. Airport (RDU) to Los Angeles - Ontario Intl. Airport (ONT)?
Changes are often free within 24 hours of making a booking, but your airline may charge you after that. For further information about modifying your flights, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your itinerary without being charged, check the "No cancel fee" or "Changes included" filter when organizing your trip.

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*Available to One Key members.