Cheapest return flights from Boise to Sydney in April from $1103

Best time to book flights for Boise (BOI) to Sydney (SYD) flights at AirHint

AirHint found the following cheapest return flights from Boise (BOI) to Sydney (SYD) in April 2025 (see full year).

Return flights

15 Apr - 15 May Alaska Airlines
10 Apr - 09 May Alaska Airlines
14 Apr - 14 May Alaska Airlines
12 Apr - 10 May Alaska Airlines
11 Apr - 10 May Alaska Airlines
04 Apr - 03 May Hawaiian Airlines
10 Apr - 10 May Hawaiian Airlines
07 Apr - 13 Apr Hawaiian Airlines
02 Apr - 16 Apr Air New Zealand

Also check the deals for one-way flights from Boise to Sydney in April.

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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