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Uncover the best deals on Ontario to Philadelphia flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - PHL Flights
Useful information for finding best airline tickets from Ontario International to Philadelphia International on your next trip.
Cheapest Round Trip Flight
$468
Delta Airlines
• 1 stop
• 14h 7m
Nov 20 – Nov 23
The cheapest round trip flight from Ontario to Philadelphia (ONT-PHL-ONT) is currently $468
Cheapest One way Flight
$447
United Airlines
• 1 stop
• 17h 4m
Oct 30
The cheapest one way flight from Ontario to Philadelphia (ONT-PHL) is currently $447
Cheapest Direct Flight
$373
American Airlines
• nonstop
• 8h 28m
Nov 19
The cheapest nonstop flight from Ontario to Philadelphia (ONT-PHL) is currently $373
Fastest Flight
8h 24m
The fastest nonstop flight from Ontario to Philadelphia (ONT-PHL) takes 8h 24m
Top Airlines Flying from Ontario to Philadelphia
Latest Flight Deals from Ontario (ONT) to Philadelphia (PHL)
Compare and book low fare round-trip air tickets from Ontario to Philadelphia. Ideal for travelers with confirmed return itineraries.
Nov 20 - Nov 23, Economy
Ontario → Philadelphia
14h 7m
5:56 PM - 5:43 AM • 1 stop
Ontario → Philadelphia
15h 32m
2:12 PM - 8:44 PM • 1 stop
Delta Airlines
Nov 20 - Nov 23, Economy
Ontario → Philadelphia
12h 35m
11:55 PM - 10:50 AM • 1 stop
Ontario → Philadelphia
20h 5m
5:00 AM - 2:05 PM • 1 stop
Southwest Airlines
Nov 20 - Nov 23, Economy
Ontario → Philadelphia
20h 45m
11:55 PM - 3:40 PM • 1 stop
Ontario → Philadelphia
13h 55m
7:30 AM - 1:05 PM • 1 stop
Southwest Airlines
Nov 20 - Nov 23, Economy
Ontario → Philadelphia
14h 16m
11:10 PM - 11:06 AM • 1 stop
Ontario → Philadelphia
13h 25m
7:15 AM - 12:20 PM • 1 stop
Delta Airlines
Nov 19 - Nov 22, Economy
Ontario → Philadelphia
39h 14m
8:35 PM - 11:29 PM • 3 stops
Ontario → Philadelphia
33h 20m
2:20 PM - 7:20 AM • 3 stops
Frontier Airlines
Explore competitive one-way airfare options for ONT - PHL flights. Best suited for flexible or open-ended travel plans.
Flying to Philadelphia soon? We've surfaced some of the most affordable last-minute flights from Ontario to Philadelphia, ideal for urgent plans or spontaneous trips.
Looking for the fastest way to Philadelphia? These direct flight options from ONT to PHL offer both convenience and value—no layovers, just straight to your destination.
Nov 19 - Nov 22, Economy
Ontario → Philadelphia
8h 28m
6:30 AM - 2:38 PM • nonstop
Ontario → Philadelphia
10h 5m
1:47 PM - 4:52 PM • nonstop
American Airlines
Nov 19 - Nov 22, Economy
Ontario → Philadelphia
8h 26m
9:49 AM - 5:55 PM • nonstop
Ontario → Philadelphia
10h 5m
1:47 PM - 4:52 PM • nonstop
American Airlines
Nov 19 - Nov 22, Economy
Ontario → Philadelphia
8h 24m
12:31 PM - 8:35 PM • nonstop
Ontario → Philadelphia
10h 5m
1:47 PM - 4:52 PM • nonstop
American Airlines
Nov 19 - Nov 22, Economy
Ontario → Philadelphia
8h 29m
11:59 PM - 8:08 AM • nonstop
Ontario → Philadelphia
10h 5m
1:47 PM - 4:52 PM • nonstop
American Airlines
Nov 20 - Nov 23, Economy
Ontario → Philadelphia
8h 29m
10:59 PM - 7:08 AM • nonstop
Ontario → Philadelphia
10h 5m
1:47 PM - 4:52 PM • nonstop
American Airlines
FAQs on Ontario to Philadelphia Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to PHL?
The most popular airline flying from Ontario to Philadelphia are
Can I fly from ONT to PHL non-stop?
Yes, you can fly ONT to PHL non-stop on
Which airlines fly nonstop between Ontario and Philadelphia?
The non-stop flights between Ontario and Philadelphia are .
What’s the earliest departure time from ONT to PHL Airport?
The earliest flight leaves ONT at 6:30 am and lands in PHL - Philadelphia International
What are the airports in Philadelphia?
PHL
Can I make changes to my Ontario to Philadelphia 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 ONT to PHL?
Read the fare rules of the Ontario to Philadelphia 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 Ontario and Philadelphia?
operate flights between Ontario and Philadelphia
How long does a flight from Ontario to Philadelphia take?
It takes approximately 5 hour to fly non-stop from ONT to PHL, which is 2355.69 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Philadelphia (PHL) ?
In the past couple of days, the cheapest tickets to PHL from ONT were found on UA : USD 520
Do I need a passport to fly between ONT and PHL?
No
What’s the latest departure time from ONT to PHL ?
The last flight leaves ONT at 11:59 pm
Ontario (ONT) to Philadelphia (PHL): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | Philadelphia International , Philadelphia, US |
| Distance | 2356 miles |
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