Cheap Flight Tickets from Philadelphia (PHL) to Ontario (ONT), Starting at $119

Good to Know: Cheapest and Fastest PHL - ONT Flights

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

Cheapest Round Trip Flight

$377

WN Southwest Airlines • 1 stop • 22h 35m

Dec 19 – Jan 22

The cheapest round trip flight from Philadelphia to Ontario (PHL-ONT-PHL) is currently $377

🔍 Search Flights

Cheapest One way Flight

$119

WN Southwest Airlines • 1 stop • 15h 15m

Sep 21

The cheapest one way flight from Philadelphia to Ontario (PHL-ONT) is currently $119

🔍 Search Flights

Cheapest Direct Flight

$629

AA American Airlines • nonstop • 10h 9m

Dec 20

The cheapest nonstop flight from Philadelphia to Ontario (PHL-ONT) is currently $629

🔍 Search Flights

Fastest Flight

10h 9m

The fastest nonstop flight from Philadelphia to Ontario (PHL-ONT) takes 10h 9m

Top Airlines Flying from Philadelphia 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

Sun Country Airlines (SY)

Sun Country Airlines

Aeromexico Airline (AM)

Aeromexico

Latest Flight Deals from Philadelphia (PHL) to Ontario (ONT)

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

Dec 19 - Jan 22, Economy
WN
Philadelphia → Ontario
22h 35m
11:25 AM - 10:20 PM • 1 stop
WN
Philadelphia → Ontario
17h
10:05 AM - 11:25 PM • 1 stop
$377
Southwest Airlines
Dec 19 - Jan 22, Economy
WN
Philadelphia → Ontario
15h 25m
7:30 AM - 1:55 PM • 1 stop
WN
Philadelphia → Ontario
16h 55m
7:40 AM - 8:55 PM • 2 stops
$381
Southwest Airlines
Dec 19 - Jan 22, Economy
WN
Philadelphia → Ontario
21h 50m
12:10 PM - 10:20 PM • 2 stops
WN
Philadelphia → Ontario
10h 40m
6:45 AM - 4:25 PM • 1 stop
$381
Southwest Airlines
Dec 19 - Jan 22, Economy
WN
Philadelphia → Ontario
15h 40m
11:25 AM - 6:05 PM • 1 stop
WN
Philadelphia → Ontario
17h 15m
7:40 AM - 9:15 PM • 2 stops
$381
Southwest Airlines
Dec 19 - Jan 22, Economy
WN
Philadelphia → Ontario
23h 50m
12:10 PM - 11:40 PM • 2 stops
WN
Philadelphia → Ontario
10h 35m
1:50 PM - 11:25 PM • 1 stop
$381
Southwest Airlines
Dec 19 - Jan 22, Economy
WN
Philadelphia → Ontario
16h 45m
4:35 PM - 11:40 PM • 2 stops
WN
Philadelphia → Ontario
10h 40m
6:45 AM - 4:25 PM • 1 stop
$381
Southwest Airlines

Fly from Philadelphia to Ontario with the Best Airfare Deals on FareLeaders

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

FAQs on Philadelphia to Ontario Flights

What are the airports in Philadelphia?
PHL
What’s the most popular airline flying from PHL to ONT?
The most popular airline flying from Philadelphia to Ontario are
Can I fly from PHL to ONT non-stop?
Yes, you can fly PHL to ONT non-stop on
Which airlines fly nonstop between Philadelphia and Ontario?
The non-stop flights between Philadelphia and Ontario are .
What’s the earliest departure time from PHL to ONT Airport?
The earliest flight leaves PHL at 5:20 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Philadelphia 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 PHL to ONT?
Read the fare rules of the Philadelphia 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 Philadelphia and Ontario?
operate flights between Philadelphia and Ontario
How long does a flight from Philadelphia to Ontario take?
It takes approximately 5 hour to fly non-stop from PHL to ONT, which is 2355.69 miles by air.
Which airlines provide the cheapest flights from Philadelphia (PHL) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from PHL were found on WN : USD 119
Do I need a passport to fly between PHL and ONT?
No
What’s the latest departure time from PHL to ONT ?
The last flight leaves PHL at 10:3000 am

Philadelphia (PHL) to Ontario (ONT): Airport Information

Origin Airport Philadelphia International , Philadelphia, US
Destination Airport Ontario International , Ontario, US
Distance 2356 miles

More Flight Options for Philadelphia (PHL) and Ontario (ONT)

Why Fareleaders for PHL to ONT Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Philadelphia to Ontario flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on PHL to ONT flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Philadelphia 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 Philadelphia (PHL) to Ontario (ONT)
Terms and Conditions*