Aero Mongolia Delay Rate, Cancellations & On-Time Performance M0

On-time departure and arrival rates compiled from operational records, covering every flight operated to and from Japan. Switch the period with the tabs below.

Delay rate 38.9% Delay rate is the share of flights departing more than 15 minutes after schedule (100% − on-time departure)

Cancellation: 0% / Avg delay when late: 31min

Last 28 days ・ 18 flights ・ Includes estimates 9 estimated

Some airlines do not publish gate departure/arrival times. For those flights we estimate the gate times from the takeoff/landing record and the airport's measured taxi times (validated at 3.5 min mean error, 94.4% agreement on the on-time call). Without the estimate, those airlines' flights would drop out of the sample entirely and cross-airline comparison would break.

DailyWeeklyMonthly

Daily · Last 30 days

Collecting data

Weekly · Last 12 weeks (from Monday)

On-time departureOn timeDelayed

40%50%60%70%010 66.7%50%Collecting dataWeek of 2026-07-202 flights ・ Avg delay when late +20minOn time 1 ・ Delayed 166.7%Week of 2026-07-276 flights ・ Avg delay when late +39minOn time 4 ・ Delayed 250%Week of 2026-08-0310 flights ・ Avg delay when late +33minOn time 5 ・ Delayed 550%Week of 2026-08-1010 flights ・ Avg delay when late +26minOn time 5 ・ Delayed 562.5%Week of 2026-08-178 flights ・ Avg delay when late +31minOn time 5 ・ Delayed 350%Week of 2026-08-248 flights ・ Avg delay when late +28minOn time 4 ・ Delayed 4Collecting dataWeek of 2026-08-314 flights ・ Avg delay when late +17minOn time 3 ・ Delayed 1Collecting dataWeek of 2026-09-074 flights ・ Avg delay when late +26minOn time 2 ・ Delayed 266.7%Week of 2026-09-146 flights ・ Avg delay when late +31minOn time 4 ・ Delayed 266.7%Week of 2026-09-216 flights ・ Avg delay when late +21minOn time 4 ・ Delayed 2Collecting dataWeek of 2026-09-284 flights ・ Avg delay when late +67minOn time 2 ・ Delayed 2

Jul 20Aug 3Aug 17Aug 31Sep 14Sep 28

Line = on-time departure rate (left axis); bars = flights operated (right axis), stacked as on-time and delayed. Hover (or tap) a point for the breakdown and the average delay of delayed flights. The green band marks 90% on-time departures and above.

Monthly · Last 12 months

On-time departureOn timeDelayed

50%60%70%050 59.1%57.5%Collecting data2026-074 flights ・ Avg delay when late +33minOn time 1 ・ Delayed 357.5%2026-0840 flights ・ Avg delay when late +30minOn time 23 ・ Delayed 1759.1%2026-0922 flights ・ Avg delay when late +30minOn time 13 ・ Delayed 9Collecting data2026-10 (Collecting data)2 flightsOn time 2 ・ Delayed 0

JulAugSepOct

By route

Last 24 months

Most punctual

		Dep	n	Arr
Ulaanbaatar Chinggis Khaan→Narita UBN-NRT		93.8%	n=32	57.1%

Least punctual

		Dep	n	Arr
Narita→Ulaanbaatar Chinggis Khaan NRT-UBN		25.7%	n=35	81.3%

Want to check Aero Mongolia's on-time departure rate on other routes?

Pick an origin and a destination to see that route's on-time performance.

Domestic / International

	On-time departure		Avg delay when late	n
International		61.1%	+31min	n=18

Avg delay when late counts only flights that departed more than 15 minutes behind schedule

By aircraft type

	On-time departure		Avg delay when late	n
Narrow-body
A320		61.1%	+31min	n=18

Avg delay when late counts only flights that departed more than 15 minutes behind schedule / Variants of the same type (B788, B789, B78X and so on) are grouped into one row.

By departure time

	On-time departure		Avg delay when late	n
9:00-12:00		88.9%	—	n=9
15:00-18:00		33.3%	+31min	n=9

Avg delay when late counts only flights that departed more than 15 minutes behind schedule / Faded rows are indicative (n<10); below n=5 no rate is shown

By day of week Last 24 months

Mon

Dep——n=0

Arr——n=0

Tue

Dep

47.4%n=19

Arr

63.2%n=19

Wed

Dep——n=0

Arr——n=0

Thu

Dep

50%n=8

Arr

62.5%n=8

Fri

Dep

60%n=20

Arr

65%n=20

Sat

Dep

80%n=10

Arr

100%n=10

Sun

Dep

60%n=10

Arr

60%n=10

See the full aircraft rotation history

Ship charts and fleet rotation show the last 3 days to everyone. Standard members (¥280/month) get the last 27 days for aircraft of Japanese airlines. The on-time data itself is free for all.

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Updated: 2026-10-06 / Last 28 days