What is the cheapest month to fly from Boston to Sydney?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Boston (BOS) to Sydney (SYD), with fares starting from $692.

What is the lowest current fare from BOS to SYD?

The lowest currently-listed fare from Boston (BOS) to Sydney (SYD) is $692 on 2026-08-22.

Is there a direct flight from Boston to Sydney?

There is currently no non-stop service from BOS to SYD. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Boston to Sydney

Cheapest current fares: $692 in August 2026 on connecting flights.

Last updated August 4, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Boston (BOS) to Sydney (SYD). Refreshed daily.

Boston (BOS) → Sydney (SYD)

August 2026 $692
November 2026 $740

Frequently asked questions

What is the cheapest month to fly from Boston to Sydney?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Boston (BOS) to Sydney (SYD), with fares starting from $692.
What is the lowest current fare from BOS to SYD?

The lowest currently-listed fare from Boston (BOS) to Sydney (SYD) is $692 on 2026-08-22.
Is there a direct flight from Boston to Sydney?

There is currently no non-stop service from BOS to SYD. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.