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ONT to BWI: distance & flight time
Ontario (Ontario International Airport) → Baltimore (Baltimore/Washington International Thurgood Marshall Airport)
2,278 mi
3,666 km · 1,979 nm
4h 56m
estimated nonstop flight time
+3h
time difference · heading east
See live ONT→BWI fares Phone-only fares on this route — call free
Flight time details
2,278 miles nonstop takes roughly 4h 56m 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
- BWI — Baltimore/Washington International Thurgood Marshall Airport · Baltimore, 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 BWI
- DCA · Ronald Reagan Washington National Airport30 mi away
- IAD · Washington Dulles International Airport45 mi away
- FME · Tipton Airport8 mi away
- ANP · Lee Airport17 mi away
Frequently asked questions
How far is ONT from BWI?
The flight distance from Ontario (ONT) to Baltimore (BWI) is 2,278 miles (3,666 km, 1,979 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to BWI?
A nonstop flight takes about 4h 56m 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 Baltimore?
Baltimore is 3 hours ahead of Ontario.
What is the cheapest way to fly from ONT to BWI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–BWI that never appear on search engines, with no booking fees.