How much is a ticket from Dublin to Barcelona?

The cheapest price found today is $35.

When is it cheaper to fly?

Cheapest month is September — from $35.

Cheapest today — $35. Below is what booking services offer.

Departure	Airline	Stops	Price
Sep 22	Ryanair	direct	$35	View
Sep 16	Vueling	direct	$37	View
Sep 26	Ryanair	direct	$39	View
Sep 23	Ryanair	direct	$42	View
Sep 8	Vueling	direct	$43	View
Sep 7	Vueling	direct	$43	View
Oct 19	Ryanair	direct	$45	View
Oct 9	Ryanair	direct	$47	View
Nov 6	Ryanair	direct	$47	View

How much is a ticket from Dublin to Barcelona?: The cheapest price found today is $35.
When is it cheaper to fly?: Cheapest month is September — from $35.

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