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BOI to SYD: distance & flight time
Boise (Boise Air Terminal/Gowen Field) → Sydney (Sydney Kingsford Smith International Airport)
7,900 mi
12,714 km · 6,865 nm
15h 57m
estimated nonstop flight time
+16h
time difference · heading southwest
See live BOI→SYD fares Phone-only fares on this route — call free
Flight time details
7,900 miles nonstop takes roughly 15h 57m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 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 BOI from SYD?
The flight distance from Boise (BOI) to Sydney (SYD) is 7,900 miles (12,714 km, 6,865 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOI to SYD?
A nonstop flight takes about 15h 57m 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 Boise and Sydney?
Sydney is 16 hours ahead of Boise.
What is the cheapest way to fly from BOI to SYD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOI–SYD that never appear on search engines, with no booking fees.