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MSS to ONT: distance & flight time
Massena (Massena International Richards Field) → Ontario (Ontario International Airport)
2,369 mi
3,813 km · 2,059 nm
5h 7m
estimated nonstop flight time
-3h
time difference · heading west
See live MSS→ONT fares Phone-only fares on this route — call free
Flight time details
2,369 miles nonstop takes roughly 5h 7m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- MSS — Massena International Richards Field · Massena, United States
- ONT — Ontario International Airport · Ontario, 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 MSS
- YCC · Cornwall Regional Airport18 mi away
- OGS · Ogdensburg International Airport35 mi away
- YOW · Ottawa Macdonald-Cartier International Airport48 mi away
- SLK · Adirondack Regional Airport49 mi away
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
Frequently asked questions
How far is MSS from ONT?
The flight distance from Massena (MSS) to Ontario (ONT) is 2,369 miles (3,813 km, 2,059 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MSS to ONT?
A nonstop flight takes about 5h 7m 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 Massena and Ontario?
Ontario is 3 hours behind Massena.
What is the cheapest way to fly from MSS to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MSS–ONT that never appear on search engines, with no booking fees.