Thai Airways International Delay Rate, Cancellations & On-Time Performance TG

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 45.4% Delay rate is the share of flights departing more than 15 minutes after schedule (100% − on-time departure)

Cancellation: 0.8% / Avg delay when late: 127min

Last 28 days ・ 513 flights ・ Includes estimates 11 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Some airlines do not publish gate departure/arrival times.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

On-time departureOn timeDelayed

0%20%40%60%80%025 50%0%27.8%2026-09-0618 flights ・ Avg delay when late +51minOn time 5 ・ Delayed 1344.4%2026-09-0718 flights ・ Avg delay when late +31minOn time 8 ・ Delayed 1077.8%2026-09-0818 flights ・ Avg delay when late +39minOn time 14 ・ Delayed 466.7%2026-09-0918 flights ・ Avg delay when late +46minOn time 12 ・ Delayed 676.5%2026-09-1017 flights ・ Avg delay when late +42minOn time 13 ・ Delayed 461.1%2026-09-1118 flights ・ Avg delay when late +51minOn time 11 ・ Delayed 750%2026-09-1218 flights ・ Avg delay when late +70minOn time 9 ・ Delayed 968.4%2026-09-1319 flights ・ Avg delay when late +75minOn time 13 ・ Delayed 655.6%2026-09-1418 flights ・ Avg delay when late +61minOn time 10 ・ Delayed 861.1%2026-09-1518 flights ・ Avg delay when late +36minOn time 11 ・ Delayed 772.2%2026-09-1618 flights ・ Avg delay when late +19minOn time 13 ・ Delayed 563.2%2026-09-1719 flights ・ Avg delay when late +30minOn time 12 ・ Delayed 760%2026-09-1820 flights ・ Avg delay when late +35minOn time 12 ・ Delayed 875%2026-09-1920 flights ・ Avg delay when late +37minOn time 15 ・ Delayed 555%2026-09-2020 flights ・ Avg delay when late +47minOn time 11 ・ Delayed 965%2026-09-2120 flights ・ Avg delay when late +61minOn time 13 ・ Delayed 775%2026-09-2220 flights ・ Avg delay when late +47minOn time 15 ・ Delayed 570%2026-09-2320 flights ・ Avg delay when late +24minOn time 14 ・ Delayed 676.2%2026-09-2421 flights ・ Avg delay when late +119minOn time 16 ・ Delayed 552.4%2026-09-2521 flights ・ Avg delay when late +95minOn time 11 ・ Delayed 1047.6%2026-09-2621 flights ・ Avg delay when late +174minOn time 10 ・ Delayed 1115%2026-09-2720 flights ・ Avg delay when late +236minOn time 3 ・ Delayed 170%2026-09-2818 flights ・ Avg delay when late +379minOn time 0 ・ Delayed 180%2026-09-2916 flights ・ Avg delay when late +424minOn time 0 ・ Delayed 1631.3%2026-09-3016 flights ・ Avg delay when late +185minOn time 5 ・ Delayed 1123.5%2026-10-0117 flights ・ Avg delay when late +38minOn time 4 ・ Delayed 1375%2026-10-0220 flights ・ Avg delay when late +34minOn time 15 ・ Delayed 555%2026-10-0320 flights ・ Avg delay when late +59minOn time 11 ・ Delayed 955%2026-10-04 (Provisional)20 flights ・ Avg delay when late +53minOn time 11 ・ Delayed 950%2026-10-05 (Provisional)14 flights ・ Avg delay when late +55minOn time 7 ・ Delayed 7

Sep 6Sep 12Sep 18Sep 24Oct 5

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. Dashed segments and pale bars are provisional, before the actuals are final.

Weekly · Last 12 weeks (from Monday)

On-time departureOn timeDelayed

30%50%70%0200 50%36.2%73.9%Week of 2026-07-20134 flights ・ Avg delay when late +36minOn time 99 ・ Delayed 3560.4%Week of 2026-07-27139 flights ・ Avg delay when late +34minOn time 84 ・ Delayed 5552.1%Week of 2026-08-03140 flights ・ Avg delay when late +49minOn time 73 ・ Delayed 6762.1%Week of 2026-08-10140 flights ・ Avg delay when late +41minOn time 87 ・ Delayed 5373.4%Week of 2026-08-17124 flights ・ Avg delay when late +35minOn time 91 ・ Delayed 3373.2%Week of 2026-08-24112 flights ・ Avg delay when late +39minOn time 82 ・ Delayed 3074.8%Week of 2026-08-31119 flights ・ Avg delay when late +43minOn time 89 ・ Delayed 3063.5%Week of 2026-09-07126 flights ・ Avg delay when late +51minOn time 80 ・ Delayed 4663.2%Week of 2026-09-14133 flights ・ Avg delay when late +39minOn time 84 ・ Delayed 4957.3%Week of 2026-09-21143 flights ・ Avg delay when late +134minOn time 82 ・ Delayed 6136.2%Week of 2026-09-28 (Provisional)127 flights ・ Avg delay when late +209minOn time 46 ・ Delayed 8150%Week of 2026-10-05 (Provisional)14 flights ・ Avg delay when late +55minOn time 7 ・ Delayed 7

Jul 20Aug 10Aug 31Oct 5

Monthly · Last 12 months

On-time departureOn timeDelayed

50%60%70%80%01000 52.7%70.7%2026-07345 flights ・ Avg delay when late +35minOn time 244 ・ Delayed 10164.5%2026-08572 flights ・ Avg delay when late +42minOn time 369 ・ Delayed 20358.9%2026-09555 flights ・ Avg delay when late +126minOn time 327 ・ Delayed 22852.7%2026-10 (Provisional)91 flights ・ Avg delay when late +48minOn time 48 ・ Delayed 43

JulAugSepOct

“Provisional” values are preliminary. The last 2 days are still being corrected, so they may change slightly.

By route

Last 24 months

Most punctual

	Dep	n	Arr
Tokyo Haneda→Suvarnabhumi HND-BKK	78.2%	n=147	86.4%
Fukuoka→Suvarnabhumi FUK-BKK	74.6%	n=67	74.6%
Chubu Centrair→Suvarnabhumi NGO-BKK	72.6%	n=73	80.8%
Suvarnabhumi→Tokyo Haneda BKK-HND	72.0%	n=143	70.6%
Kansai→Suvarnabhumi KIX-BKK	67.6%	n=145	75.9%
Suvarnabhumi→Narita BKK-NRT	67.2%	n=186	69.8%

Least punctual

	Dep	n	Arr
Suvarnabhumi→Chubu Centrair BKK-NGO	20.5%	n=73	52.3%
Suvarnabhumi→New Chitose BKK-CTS	32.8%	n=64	48.4%
Suvarnabhumi→Fukuoka BKK-FUK	37.3%	n=67	32.8%
New Chitose→Suvarnabhumi CTS-BKK	57.8%	n=64	56.3%
Suvarnabhumi→Kansai BKK-KIX	58.6%	n=145	60.7%
Narita→Suvarnabhumi NRT-BKK	65.6%	n=186	75.3%

Routes flown

Routes not in the ranking above, ordered by flights in the last 28 days. The route pages show every airline's record.

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Domestic / International

	On-time departure		Avg delay when late	n
Domestic	—	Collecting data	+25min	n=1
International		54.7%	+127min	n=506

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

By aircraft type

		Avg delay when late	n
Wide-body
B777	64.5%	+140min	n=200
A330	54.9%	+114min	n=102
A350	44.2%	+103min	n=95
B787	43.4%	+145min	n=76
Narrow-body
A320	46.9%	+130min	n=32

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
0:00-3:00		33.7%	+109min	n=83
6:00-9:00		67.3%	+126min	n=52
9:00-12:00		65.2%	+154min	n=158
12:00-15:00		41.9%	+126min	n=43
15:00-18:00		77.4%	+172min	n=53
18:00-21:00	—	Collecting data	—	n=1
21:00-24:00		43.6%	+109min	n=117

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

By day of week Last 24 months

Mon

Dep

62.7%n=185

Arr

70%n=180

Tue

Dep

63.4%n=186

Arr

70.2%n=181

Wed

Dep

64.4%n=180

Arr

75%n=176

Thu

Dep

64.6%n=206

Arr

71.6%n=197

Fri

Dep

64.3%n=207

Arr

73.2%n=198

Sat

Dep

61.6%n=211

Arr

64.1%n=206

Sun

Dep

55.4%n=186

Arr

57.7%n=182

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Updated: 2026-10-06 / Last 28 days