How much is a ticket from Sydney to Darwin?

The cheapest price found today is $154.

When is it cheaper to fly?

Cheapest month is October — from $154.

Cheapest today — $154. Below is what booking services offer.

Departure	Airline	Stops	Price
Oct 8	Jetstar	direct	$154	View
Oct 7	Jetstar	direct	$174	View
Aug 27	Jetstar	direct	$201	View
Oct 20	Jetstar	1	$223	View
Aug 30	Jetstar	direct	$224	View

How much is a ticket from Sydney to Darwin?: The cheapest price found today is $154.
When is it cheaper to fly?: Cheapest month is October — from $154.

Links to booking services are affiliate links. The price stays the same for you.