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BOS to SYD: distance & flight time
Boston (General Edward Lawrence Logan International Airport) → Sydney (Sydney Kingsford Smith International Airport)
10,098 mi
16,251 km · 8,775 nm
20h 16m
estimated nonstop flight time
+14h
time difference · heading west
See live BOS→SYD fares Phone-only fares on this route — call free
Flight time details
10,098 miles nonstop takes roughly 20h 16m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- BOS — General Edward Lawrence Logan International Airport · Boston, United States
- SYD — Sydney Kingsford Smith International Airport · Sydney, Australia
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 BOS
- OWD · Norwood Memorial Airport15 mi away
- BED · Laurence G Hanscom Field16 mi away
- BVY · Beverly Municipal Airport16 mi away
- LWM · Lawrence Municipal Airport25 mi away
Near SYD
- BWU · Sydney Bankstown Airport11 mi away
- CDU · Camden Airport29 mi away
- XRH · RAAF Base Richmond33 mi away
- WOL · Wollongong Airport48 mi away
Frequently asked questions
How far is BOS from SYD?
The flight distance from Boston (BOS) to Sydney (SYD) is 10,098 miles (16,251 km, 8,775 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOS to SYD?
A nonstop flight takes about 20h 16m 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 Boston and Sydney?
Sydney is 14 hours ahead of Boston.
What is the cheapest way to fly from BOS to SYD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOS–SYD that never appear on search engines, with no booking fees.