AREX all-stop train to Seoul StationorAREX Express to Seoul Station?

The short answer

For one traveler the AREX all-stop train to Seoul Station is cheaper by ₩8,250. That does not change up to 8 travelers.

The AREX Express to Seoul Station is quicker: 43 min against 59 min. The AREX all-stop train to Seoul Station varies between 59 and 65 minutes.

AREX all-stop train to Seoul Station: 05:14–23:38. AREX Express to Seoul Station: 05:24–22:48.

Priced against each other

Whole-party totals · adult fares

What each costs for the whole party, in KRW. The cheaper of the two is marked on every row.
Travelers	AREX all-stop train to Seoul Station	AREX Express to Seoul Station	Difference
1	₩4,750	₩13,000	₩8,250
2	₩9,500	₩26,000	₩16,500
3	₩14,250	₩39,000	₩24,750
4	₩19,000	₩52,000	₩33,000
5	₩23,750	₩65,000	₩41,250
6	₩28,500	₩78,000	₩49,500
7	₩33,250	₩91,000	₩57,750
8	₩38,000	₩104,000	₩66,000

Where each one leaves you

AREX · Airport Railroad Co. (AREX)AREX all-stop train to Seoul Station

From: Incheon Airport Terminal 1 station, Transportation Center, B1; or Terminal 2 station
To: Seoul Station, the end of the line, for KTX and metro lines 1 and 4
Luggage: Luggage spaces by the first door of cars 2 to 5.
Runs: 05:14–23:38
Journey: 59–65 min

Calls at 11 stations on the way, including Gimpo Airport, Hongik University and Gongdeok, for the metro. Some trains take up to 6 minutes longer.

AREX Express · Airport Railroad Co. (AREX)AREX Express to Seoul Station

From: Incheon Airport Terminal 1 station, Transportation Center, B1; or Terminal 2 station
To: Seoul Station, non-stop
Runs: 05:24–22:48
Journey: 43 min

Every seat is assigned: buy the ticket before you board.

From Terminal 2 the ride is 51 minutes.