Aero K
Is RF422 delayed?
Service date: · Scheduled arrival date; departure time unavailable (UTC)
Arrived
1 min late
Official source · Updated
Departure
Ulaanbaatar
UBN
Scheduled
Not available
Arrival
Cheongju
CJJ
Actual
Scheduled 21:10
Sep 11
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
UBNCJJ
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 5 min early
UBN → CJJ
- 1 min late
UBN → CJJ
- 10 min early
UBN → CJJ
- 1 min early
UBN → CJJ
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 4
- Arrivals over 15 minutes late
- 0
- Observed cancellations
- 3
- Observed occurrences
- 7
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 14, 2026Arrived | Ulaanbaatar | Cheongju | -5 | |
| Sep 13, 2026Cancelled | Ulaanbaatar | Cheongju | Not available | Not available |
| Sep 11, 2026Arrived | Ulaanbaatar | Cheongju | 1 | |
| Sep 9, 2026Cancelled | Ulaanbaatar | Cheongju | Not available | Not available |
| Sep 7, 2026Arrived | Ulaanbaatar | Cheongju | -10 | |
| Sep 6, 2026Cancelled | Ulaanbaatar | Cheongju | Not available | Not available |
| Sep 4, 2026Arrived | Ulaanbaatar | Cheongju | -1 |