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ONT to PHL: distance & flight time
Ontario (Ontario International Airport) → Philadelphia (Philadelphia International Airport)
2,351 mi
3,783 km · 2,043 nm
5h 5m
estimated nonstop flight time
+3h
time difference · heading east
See live ONT→PHL fares Phone-only fares on this route — call free
Flight time details
2,351 miles nonstop takes roughly 5h 5m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- PHL — Philadelphia International Airport · Philadelphia, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Near PHL
- BBX · Wings Field18 mi away
- PNE · Northeast Philadelphia Airport19 mi away
- LLY · South Jersey Regional Airport22 mi away
- NXX · Willow Grove Naval Air Station/Joint Reserve Base23 mi away
Frequently asked questions
How far is ONT from PHL?
The flight distance from Ontario (ONT) to Philadelphia (PHL) is 2,351 miles (3,783 km, 2,043 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to PHL?
A nonstop flight takes about 5h 5m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Ontario and Philadelphia?
Philadelphia is 3 hours ahead of Ontario.
What is the cheapest way to fly from ONT to PHL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–PHL that never appear on search engines, with no booking fees.