The Airport Congestion Prediction is a service that provides information on the number of passengers using Incheon International Airport by time range so that the customers can check the time-basis congestion status at the airport in advance.
In case of a change in flight departure/arrival time, boarding gate, etc., the predicted number of passengers on the airport congestion prediction in the website updated in real time and the values on the airport congestion prediction before change may not match.
The predication data is updated every day at 17:00. (D +2 days: Departure airport congestion prediction , D +1 day: airport congestion prediction at departure and transit)

2026.01.23 (Fri) Airport Passenger Departure time zone warning status

No alarms assigned

(Unit: piece, people, t)

Airport congestion expected by route lookup table
Time	Japan	China	Southeast Asia	Americas	Europe	Oceania	Others
00~1Hour	0	0	509	0	0	0	150
01~2Hour	0	0	124	0	0	0	63
02~3Hour	0	0	46	0	0	0	0
03~4Hour	30	0	213	0	0	0	0
04~5Hour	431	20	917	0	0	0	36
05~6Hour	1381	156	1520	0	0	0	110
06~7Hour	1699	512	766	0	55	6	291
07~8Hour	1633	596	728	0	281	45	506
08~9Hour	1757	474	1053	0	384	88	675
09~10Hour	1270	991	737	56	244	11	722
10~11Hour	1114	1459	278	139	212	0	688
11~12Hour	1105	1430	172	154	267	0	536
12~13Hour	1230	1304	168	18	62	0	553
13~14Hour	1185	891	547	8	0	0	386
14~15Hour	771	709	991	82	0	0	182
15~16Hour	515	408	1324	217	0	0	326
16~17Hour	352	287	1269	356	0	29	511
17~18Hour	198	261	1331	272	0	90	437
18~19Hour	100	513	1578	145	12	193	194
19~20Hour	101	675	1013	188	34	415	206
20~21Hour	80	457	492	177	119	398	321
21~22Hour	58	171	397	17	176	97	569
22~23Hour	2	120	200	0	198	2	650
23~24Hour	0	68	192	0	40	0	186