JL637Japan Airlines · HND → KMJ
live · 3m ago
Route confirmed Japan Airlines

JL637 TokyoHND · 17:35 KumamotoKMJ · 19:25

JL637 by Japan Airlines flies from Tokyo (HND) to Kumamoto (KMJ) for the Tue, Oct 20 departure.

Right nowIn the air to Kumamoto · off blocks 17:41 · 6 min late
19:35

estimated arrival at KMJ · local time · ~48 min from now

LivePosition · updated 3m ago
KMJ246 mi · ~48 min leftHND
28,000 ftAltitudecruising
459 mphSpeed399 kt
255°Direction

Live position · flown path, last 48 min

⚖ JL637 typically leaves +6 and lands +0. The air wins minutes back.

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
10-20
+6 gate · +10 arrival
10-19
+10 gate · +10 arrival
10-18
+9 gate · +0 arrival
10-17
+6 gate · +0 arrival
10-16
+7 gate · +10 arrival
10-15
+1 gate · +5 arrival
10-14
+18 gate · +25 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival +0 min · 0 cancelled · 15 operations tracked

The route today

live boards
HNDTokyoOn-time likelyHND delay board →
KMJKumamotoOn-time likelyKMJ delay board →
HND→KMJevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
27%Chance of 15+ min delay
3.2%Chance of cancellation
+6 minAvg hub delay right now

Conditions at HND and KMJ are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Tokyo to Kumamoto flights today

same route · Japan Airlines
JL4281departs 06:00
JL623departs 06:20
JL625departs 08:00
JL627departs 10:00
JL629departs 11:25
JL631departs 12:50

If JL637 is cancelled, these are the other Japan Airlines nonstop flights from Tokyo to Kumamoto on the same day, with scheduled departure times in HND local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How JL637 actually runs

Pro Flight Search has tracked every published board update for JL637 across the HND and KMJ boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 13 confirmed landings · 12/13 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how JL637 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-20HND 17:35 17:41 (+6)KMJ 19:25 19:35 (+10)
10-19HND 17:35 17:45 (+10)KMJ 19:25 19:35 (+10)
10-18HND 17:35 17:44 (+9)KMJ 19:25 (+0)
10-17HND 17:35 17:41 (+6)KMJ 19:25 (+0)
10-16HND 17:35 17:42 (+7)KMJ 19:25 19:35 (+10)
10-15HND 17:35 17:36 (+1)KMJ 19:25 19:30 (+5)
10-14HND 17:35 17:53 (+18)KMJ 19:25 19:50 (+25)
10-13HND 17:35 17:38 (+3)KMJ 19:25 (+0)
10-12HND 17:35 17:37 (+2)KMJ 19:25 (+0)
10-11HND 17:35 17:41 (+6)KMJ 19:25 19:30 (+5)
10-10HND 17:35 17:34 (−1)KMJ 19:25 19:20 (−5)
10-09HND 17:35 17:40 (+5)KMJ 19:25 (+0)
10-08HND 17:35 17:40 (+5)KMJ 19:25 (+0)
10-07HND 17:35 17:38 (+3)KMJ 19:25 (+0)
10-06HND 17:35 17:44 (+9)KMJ 19:25 19:35 (+10)

Board clocks recorded as HND and KMJ published them.

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — JL637 Tokyo to Kumamoto on-time performance, measured from the HND and KMJ airport boards.

Canonical URL
https://proflightsearch.com/flight/JL637
How we measure this →