Cheapest return flights from Chicago to Sydney in April from $908

Best time to book flights for Chicago (ORD) to Sydney (SYD) flights at AirHint

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

Return flights

01 Apr - 20 Apr Frontier Airlines
17 Apr - 25 Apr Frontier Airlines
17 Apr - 24 Apr Frontier Airlines
14 Apr - 22 Apr Air Canada
03 Apr - 09 Apr Frontier Airlines
26 Apr - 03 May Spirit Airlines
10 Apr - 24 Apr Air Canada
05 Apr - 12 Apr Fiji Airways
08 Apr - 16 Apr Air Canada
20 Apr - 29 Apr Air Canada
09 Apr - 16 Apr Air Canada
27 Apr - 04 May Spirit Airlines

Also check the deals for one-way flights from Chicago 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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney