How much is a ticket from Madrid to Dusseldorf?

The cheapest price found today is $56.

When is it cheaper to fly?

Cheapest month is October — from $56.

Cheapest today — $56. Below is what booking services offer.

Departure	Airline	Stops	Price
Oct 22	Wizz Air Malta	1	$56	View
Oct 19	Wizz Air Malta	1	$56	View
Jan 23	Wizz Air Malta	1	$65	View
Sep 17	Ryanair	1	$66	View
Sep 1	Ryanair	1	$73	View
Sep 30	Ryanair	1	$74	View
Oct 1	Ryanair	1	$74	View
Sep 29	Ryanair	1	$76	View

How much is a ticket from Madrid to Dusseldorf?: The cheapest price found today is $56.
When is it cheaper to fly?: Cheapest month is October — from $56.

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