Are there nonstop flights from Sydney (WSI) to Adelaide (ADL)?

No. The fastest connection is via Melbourne, about 2h 33m of total flying time.

What is the fastest connection from Sydney (WSI) to Adelaide (ADL)?

via Melbourne ≈ 2h 33m, via Gold Coast ≈ 3h 42m, via Brisbane ≈ 3h 48m (estimated flying time, excluding layovers).

Western Sydney International (Nancy-Bird Walton) Airport (WSI) to Adelaide International Airport (ADL)・1,123 km

No nonstop flights. The fastest connection is via Melbourne (MEL), about 2h 33m of flying time (layover not included).

None.

3 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.