SIMYA A21BUS
Stops & listed times checked

Simya A21

심야A21
Checked on May 1, 2026
Information based on Kakao Map. Please confirm before riding.

About this route

Simya A21 is a late-night autonomous bus that runs west from Dongdaemun along Jongno, through Sinchon and Hongdae, to Hapjeong. It links the historic city centre with the north-western nightlife districts.

How the route runs

Service begins at 23:00 and continues until 03:40 the next morning. The bus turns around at Hapjeong station and returns to Dongdaemun, covering 40 stops on the round trip.

Route at a glance

First stop
Dongdaemun Station(Heunginjimun)
Turnaround
Hapjeong station
Final stop
Dongdaemun Station.Heunginjimun Gate
Service hours
23:00 – 03:40

Key stops

When to use it

Covers late-night travel around Jongno, Sinchon and Hongdae. Service runs from 23:00 to 03:40, after the subway has stopped running.

Stops (40)

17 stops are also served by other routesSaebyeok A160Saebyeok A741

Show all 40 stopsShow key stops only
  1. 01Dongdaemun Station(Heunginjimun)
  2. 02Jongno 6-ga.Dongdaemun Market
  3. 03Jongno 5(o)-ga.Gwangjang Market
  4. 04Jongno 4-ga.Jongmyo Shrine
    Other routes serving this stopSaebyeok A160
  5. 05Jongno 3(sam)-ga.Tapgol Park
    Other routes serving this stopSaebyeok A160
  6. 06Jongno 2-ga
    Other routes serving this stopSaebyeok A160Saebyeok A741
    Stop details
  7. 07Jongno 1-ga
    Other routes serving this stopSaebyeok A160
  8. 08Gwanghwamun Station
    Other routes serving this stopSaebyeok A160Saebyeok A741
    Stop details
  9. 09Seoul Museum of History, Gyeonghuigung Palace
    Other routes serving this stopSaebyeok A160
    Stop details
  10. 10Seodaemun Station- Sageori
    Other routes serving this stopSaebyeok A160
  11. 11Chungjeongno station
    Other routes serving this stopSaebyeok A160
  12. 12Ahyeon station
  13. 13Wedding Town
  14. 14Ewha Womans Univ. station
  15. 15Sinchon Ogeori, Line 2 Sinchon station
  16. 16Sinchon Ogeori, Hyundai Dept. store
  17. 17Donggyo-dong Samgeori
  18. 18Hongik Univ. station
  19. 19Seogyo-dong
  20. 20Hapjeong station
  21. 21Hapjeong station
  22. 22Seogyo-dong
  23. 23Hongik Univ. station
  24. 24Donggyo-dong Samgeori
  25. 25Sinchon Ogeori, Hyundai Dept. store
  26. 26Sinchon Ogeori, Line 2 Sinchon station
  27. 27Ewha Womans Univ. station
  28. 28Wedding Town
  29. 29Ahyeon station
  30. 30Chungjeongno station
    Other routes serving this stopSaebyeok A160
  31. 31Seodaemun Station- Sageori
    Other routes serving this stopSaebyeok A160
  32. 32Seoul Museum of History, Gyeonghuigung Palace
    Other routes serving this stopSaebyeok A160Saebyeok A741
    Stop details
  33. 33Gwanghwamun Station
    Other routes serving this stopSaebyeok A160Saebyeok A741
    Stop details
  34. 34Jongno 1-ga
    Other routes serving this stopSaebyeok A160
  35. 35Jongno 2-ga
    Other routes serving this stopSaebyeok A160Saebyeok A741
    Stop details
  36. 36Jongno 3(sam)-ga.Tapgol Park
    Other routes serving this stopSaebyeok A160
  37. 37Jongno 4-ga.Jongmyo Shrine
    Other routes serving this stopSaebyeok A160
  38. 38Jongno 5(o)-ga.Gwangjang Market
    Other routes serving this stopSaebyeok A160
    Stop details
  39. 39Jongno 6-ga.Dongdaemun Market
  40. 40Dongdaemun Station.Heunginjimun Gate
  1. 01Dongdaemun Station(Heunginjimun)
    동대문역.흥인지문
  2. 20Hapjeong station
    합정역
  3. 40Dongdaemun Station.Heunginjimun Gate
    동대문역.흥인지문

Common questions about this route

Where do I board this route?
Board at Dongdaemun Station(Heunginjimun). The route turns around at Hapjeong station and returns to Dongdaemun Station.Heunginjimun Gate.
When does this route operate?
Service runs from 23:00 to 03:40.
What days does it run, and how often?
Operating days: Weekdays. Headway: 140 min.
What information has been checked on this page?
The route endpoints, stop list and displayed operating times have been checked. Fare, operator, reservation and app requirements are not presented as confirmed until they are separately verified.
Is real-time arrival info available?
This site does not provide real-time arrival information. Check Kakao Map for the latest status.
What should I check before riding?
Confirm the schedule, stop locations, and service status through Kakao Map or official operator sources before boarding. See our full guide: How to ride →
When was this information last checked?
Stops and listed times were checked on May 1, 2026 against Kakao Map data provided by the Seoul Metropolitan Government.