Cheapest return flights from Boston to Sydney in May from $1168

Best time to book flights for Boston (BOS) to Sydney (SYD) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Sydney (SYD) in May 2025 (see full year).

Return flights

25 May - 12 Jun Hawaiian Airlines
06 May - 12 May Fiji Airways
12 May - 12 Jun Qatar Airways
30 May - 14 Jun Spirit Airlines
29 May - 08 Jun Spirit Airlines
23 May - 03 Jun Air Canada
01 May - 29 May Etihad Airways
01 May - 10 May Etihad Airways
10 May - 20 May Hawaiian Airlines
01 May - 22 May Cathay Pacific
01 May - 23 May Cathay Pacific
08 May - 15 May Cathay Pacific

Also check the deals for one-way flights from Boston to Sydney in May.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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