How much is a ticket from Tokyo to Irkutsk?

The cheapest price found today is $339.

When is it cheaper to fly?

Cheapest month is October — from $339.

Cheapest today — $339. Below is what booking services offer.

Departure	Airline	Stops	Price
Oct 29	Thai AirAsia X	1	$339	View
Oct 29	Jetstar Japan	3	$368	View
Nov 25	Spring Airlines	1	$377	View
Oct 27	Hahn Air	1	$378	View
Oct 26	Thai Vietjet Air	1	$382	View
Dec 4	Jetstar Japan	1	$385	View
Mar 1	Spring Airlines	1	$386	View
Sep 26	Jeju Air	2	$387	View
Oct 25	Peach	2	$389	View
Oct 24	Thai AirAsia X	1	$396	View

How much is a ticket from Tokyo to Irkutsk?: The cheapest price found today is $339.
When is it cheaper to fly?: Cheapest month is October — from $339.

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