
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $141 (Frontier) |
One-way from | $71 (CheapOair) |
Popular in | January |
Cheapest in | September |
Average price | $487 |
Fly from
Fly to
Route
Depart
Return
Price
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
mar. 1/20
6:50 am-5:05 pm
1 stop7h 15m
Philadelphia
mar. 1/27
5:40 am-10:40 am
1 stop8h 00m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
mar. 1/20
5:05 am-9:51 pm
2 stops13h 46m
Philadelphia
mar. 1/27
8:09 am-12:47 pm
1 stop7h 38m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
dim. 12/14
6:00 am-5:53 pm
1 stop8h 53m
Philadelphia
sam. 1/17
7:06 pm-10:59 am
1 stop18h 53m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
dim. 12/7
12:12 pm-10:47 pm
1 stop7h 35m
Philadelphia
lun. 12/8
6:50 pm-11:58 pm
1 stop8h 08m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
ven. 11/28
5:05 am-7:05 pm
2 stops11h 00m
Philadelphia
jeu. 12/4
6:15 am-12:18 pm
1 stop9h 03m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
lun. 12/29
5:10 pm-5:50 am
1 stop9h 40m
Philadelphia
sam. 1/10
5:40 am-11:54 am
1 stop9h 14m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
ven. 12/12
7:10 am-5:53 pm
2 stops31h 43m
Philadelphia
lun. 1/19
7:06 pm-3:08 pm
1 stop23h 02m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
mar. 1/13
11:53 am-6:06 pm
1 stop27h 13m
Philadelphia
ven. 3/6
6:35 pm-10:39 am
1 stop19h 04m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
mer. 12/10
1:34 pm-11:22 pm
1 stop6h 48m
Philadelphia
mar. 12/16
6:15 am-12:17 pm
1 stop9h 02m
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
jeu. 11/13
12:05 pm-4:49 am
1 stop13h 44m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
The best time to book flights from Ontario to Philadelphia is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, June is the cheapest month in which you can book a flight from Ontario to Philadelphia (average of $78). Flying from Ontario to Philadelphia in December is currently the most expensive (average of $153). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike at noon, when flights are generally more expensive, you can save up to 28% on flights from Ontario to Philadelphia by exploring options for tickets in the afternoon.
Travelers seeking maximum savings on their Ontario to Philadelphia flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Las Vegas (LAS) – chosen by Cheapflights users on 63% of 1-stop itineraries from Ontario to Philadelphia on Cheapflights.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 12h 21m.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 12h 21m.
Flights via Dallas (DFW) offer the fastest connection on this route, with an average layover time of 5h 03m.
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Walter,Aug 2025
OAK - SAN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$160 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$151 | Average$253 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$296 | Average$414 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$303 | Average$450 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$342 | Average$535 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$358 | Average$495 | FlexibilityNo cancel fee | On-time63% |