How much is a ticket from Los Angeles to Seoul?

The cheapest price found today is $343.

When is it cheaper to fly?

Cheapest month is October — from $343.

Cheapest today — $343. Below is what booking services offer.

Departure	Airline	Stops	Price
Oct 10	Air Premia	direct	$343	View
Sep 7	Xiamen Airlines	1	$388	View
Sep 14	Air Premia	direct	$409	View
Oct 12	Air Premia	direct	$413	View
Sep 9	Frontier Airlines	1	$414	View
Oct 19	Xiamen Airlines	1	$415	View
Sep 16	Frontier Airlines	1	$419	View
Sep 30	WestJet	3	$421	View
Oct 4	Air Premia	direct	$421	View

How much is a ticket from Los Angeles to Seoul?: The cheapest price found today is $343.
When is it cheaper to fly?: Cheapest month is October — from $343.

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