SL521 Thai Lion Air
SL521 Thai Lion Air from Chiang Mai (CNX) to Bangkok (DMK): usually departs 21:30, 1 h 15 min, B739. Usual times, aircraft, on-time record and miles earned over the last 30 days.
| Route | Flights recorded | Usually departs | Usually arrives | Scheduled time | Aircraft | Within 15 min |
|---|---|---|---|---|---|---|
| CNX → DMK | 30 | 21:30 | 22:45 | 1 h 15 min | B739, B738 | 100% of 21 graded |
Latest flights of SL521, by local departure date
- Tue, 3 Nov 2026: CNX → DMK
- Mon, 2 Nov 2026: CNX → DMK
- Sun, 1 Nov 2026: CNX → DMK
- Sat, 31 Oct 2026: CNX → DMK
- Fri, 30 Oct 2026: CNX → DMK
About Thai Lion Air flight SL521
Tierleap recorded 30 scheduled Thai Lion Air SL521 flights from Chiang Mai International Airport (CNX) to Don Mueang International Airport (DMK) in the last 30 days. It usually leaves Chiang Mai at 21:30 local time and arrives in Bangkok at 22:45 local time, a scheduled 1 h 15 min. Aircraft types recorded: B739 (19 flights) and B738 (10 flights). Of 21 SL521 flights from CNX to DMK with a final arrival time, 21 (100%) arrived no more than 15 minutes after schedule.
At Chiang Mai International Airport (CNX), Tierleap's landing forecast (Tierleap model) has a measured error of 5.6 minutes over 50 graded flights in the last 2 days.
At Don Mueang International Airport (DMK), Tierleap's gate arrival forecast (Tierleap model) has a measured error of 11.2 minutes over 41 graded flights, takeoff forecast (Tierleap model) has a measured error of 11 minutes over 236 graded flights and landing forecast (Tierleap model) has a measured error of 10.3 minutes over 270 graded flights in the last 2 days.
Questions about SL521
What time does SL521 depart?
From Chiang Mai International Airport (CNX) to Don Mueang International Airport (DMK), SL521 usually leaves Chiang Mai at 21:30 local time and arrives in Bangkok at 22:45 local time.
How long is flight SL521?
The scheduled time of SL521 from CNX to DMK is 1 h 15 min, the median of the last 30 days.
What aircraft does SL521 use?
Aircraft types recorded: B739 (19 flights) and B738 (10 flights).
Is SL521 usually on time?
Of 21 SL521 flights from CNX to DMK with a final arrival time, 21 (100%) arrived no more than 15 minutes after schedule.
How accurate is Tierleap's forecast for SL521?
At Chiang Mai International Airport (CNX), Tierleap's landing forecast (Tierleap model) has a measured error of 5.6 minutes over 50 graded flights in the last 2 days. At Don Mueang International Airport (DMK), Tierleap's gate arrival forecast (Tierleap model) has a measured error of 11.2 minutes over 41 graded flights, takeoff forecast (Tierleap model) has a measured error of 11 minutes over 236 graded flights and landing forecast (Tierleap model) has a measured error of 10.3 minutes over 270 graded flights in the last 2 days.