I'm flying into Seoul (ICN) next week and it looks like transport options into the city are expensive. Any cheap suggestions?

Well, you can take the subway for about 4,500 Won I think ($3.00 USD). Most of it is above ground, too, so the ride is pretty decent. It's been about 2 years since I took it, though, so don't quote me on the price.

You can take a city bus if you can figure it out for about the same price.

Or you can always take the "Airport limousine" bus for about 12,000 Won ($10).

Any particular place you're going? How long will you be in Korea?

isn't there a train that connects Incheon to downtown seoul? It should be completed by now, I would just google the airport and it will certainly give you all you need to know on a site like wikipedia which will tell you exactly how to get from Incheon airport to downtown seoul

be advised english in Seoul and korea is limited even with all the language schools many do not speak it so asking a quick question about a bus or train might be difficult...when i visited I had two of my friends who were locals guide me around and that was extremely helpful...

The train that Eppyboy is referring to IS the subway. For most of the trip, though, it's above ground, but it will take you in where you can transfer to other subway lines. It's usually relatively empty, so there is plenty of room for bags and stuff, but once you transfer to another line be aware that during peak times the subways in Seoul can get pretty crowded. Head to either the front car or back car for the best chances of having a place to set a bag down.

Eppyboy is also right - English is pretty limited, but at the airport information desks they do a pretty good job. You will also be able to find English maps there. All the subway stops are spelled phonetically, although you'll discover that's not always an exact science. English is going to be spoken at guesthouses, but not motels. Tourist areas, but not subway counters. It's hit and miss... but I found that there was actually more English in Korea than Japan, which surprised me.

Another option is to approach people and speak slowly and clearly. With the exception of a few older people, almost EVERYONE here HAS had at least a little English training, and might be able to help with basics. And English is a component on all the university entrance exams, so anybody university-age will be more likely to understand.