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2,575 km · International

Hartsfield Jackson Atlanta (ATL) – Cyril E. King (STT)

In July 2026, 131 flights operated between Hartsfield Jackson Atlanta and Cyril E. King (both directions), and 80.9% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January138169▲ 22.5%
February119146▲ 22.7%
March133182▲ 36.8%
April111144▲ 29.7%
May122124▲ 1.6%
June127126▼ 0.8%
July132131▼ 0.8%
August72––
September68––
October70–in progress
November69––
December113––
Year to date (Jan–Jul)8821,022▲ 15.9%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January79.7%79.3%▼ 0.5%
February77.3%84.2%▲ 8.9%
March77.4%84.1%▲ 8.7%
April83.8%85.4%▲ 1.9%
May86.1%79.8%▼ 7.3%
June90.6%87.3%▼ 3.6%
July84.1%80.9%▼ 3.8%
August80.6%––
September85.3%––
October84.3%–in progress
November84.1%––
December77.0%––
Year-to-date average (Jan–Jul)82.7%83.0%▲ 0.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January29▲ 350.0%
February12▲ 100.0%
March14▲ 300.0%
April10▼ 100.0%
May00–
June10▼ 100.0%
July01–
August6––
September0––
October0–in progress
November1––
December1––
Year to date (Jan–Jul)616▲ 166.7%

By direction

ATL → STT

Scheduled flights
1,280
Flights operated
1,271
Cancelled
9 · 0.7%
On-time departures
84.6%

STT → ATL

Scheduled flights
1,280
Flights operated
1,259
Cancelled
21 · 1.6%
On-time departures
80.9%

ATL → STT and STT → ATL counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Delta Air Lines DL 2,560 100.0% 82.7% 30

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay11:00–12:006.3min · 481 recorded · 479 measured
Gap to highest-delay hour7.5min11:00 ↔ 13:00
Recorded flights2,560ATL–STT

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 132 recorded · 130 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 95 recorded · 95 measured · Source: the US BTS 10:00 · 85.1% · 556 recorded · 551 measured · Source: the US BTS 11:00 · 82.7% · 481 recorded · 479 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 57 recorded · 56 measured · Source: the US BTS 13:00 · 80.9% · 371 recorded · 367 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 198 recorded · 196 measured · Source: the US BTS 15:00 · 80.5% · 491 recorded · 482 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 163 recorded · 159 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 16 recorded · 15 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 132 recorded · 130 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 95 recorded · 95 measured · Source: the US BTS 10:00 · 6.4 min · 556 recorded · 551 measured · Source: the US BTS 11:00 · 6.3 min · 481 recorded · 479 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 57 recorded · 56 measured · Source: the US BTS 13:00 · 13.9 min · 371 recorded · 367 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 198 recorded · 196 measured · Source: the US BTS 15:00 · 12.9 min · 491 recorded · 482 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 163 recorded · 159 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 16 recorded · 15 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 132 · 132 recorded · 130 measured · Source: the US BTS 09:00 · 95 · 95 recorded · 95 measured · Source: the US BTS 10:00 · 556 · 556 recorded · 551 measured · Source: the US BTS 11:00 · 481 · 481 recorded · 479 measured · Source: the US BTS 12:00 · 57 · 57 recorded · 56 measured · Source: the US BTS 13:00 · 371 · 371 recorded · 367 measured · Source: the US BTS 14:00 · 198 · 198 recorded · 196 measured · Source: the US BTS 15:00 · 491 · 491 recorded · 482 measured · Source: the US BTS 16:00 · 163 · 163 recorded · 159 measured · Source: the US BTS 17:00 · 16 · 16 recorded · 15 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:00No observations———
07:00No observations———
08:00Fewer than 200 measured departures—130132
09:00Fewer than 200 measured departures—9595
10:0085.1%6.4 min551556
11:0082.7%6.3 min479481
12:00Fewer than 200 measured departures—5657
13:0080.9%13.9 min367371
14:00Fewer than 200 measured departures—196198
15:0080.5%12.9 min482491
16:00Fewer than 200 measured departures—159163
17:00Fewer than 200 measured departures—1516
18:00No observations———
19:00No observations———
20:00No observations———
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 80.0% · 348 recorded · 345 measured · Source: the US BTS Tuesday · 88.8% · 338 recorded · 338 measured · Source: the US BTS Wednesday · 85.5% · 340 recorded · 337 measured · Source: the US BTS Thursday · 84.4% · 352 recorded · 352 measured · Source: the US BTS Friday · 87.7% · 352 recorded · 349 measured · Source: the US BTS Saturday · 76.8% · 476 recorded · 462 measured · Source: the US BTS Sunday · 78.1% · 354 recorded · 347 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 14.8 min · 348 recorded · 345 measured · Source: the US BTS Tuesday · 4.1 min · 338 recorded · 338 measured · Source: the US BTS Wednesday · 7.9 min · 340 recorded · 337 measured · Source: the US BTS Thursday · 4.1 min · 352 recorded · 352 measured · Source: the US BTS Friday · 2.5 min · 352 recorded · 349 measured · Source: the US BTS Saturday · 16.5 min · 476 recorded · 462 measured · Source: the US BTS Sunday · 12.5 min · 354 recorded · 347 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 348 · 348 recorded · 345 measured · Source: the US BTS Tuesday · 338 · 338 recorded · 338 measured · Source: the US BTS Wednesday · 340 · 340 recorded · 337 measured · Source: the US BTS Thursday · 352 · 352 recorded · 352 measured · Source: the US BTS Friday · 352 · 352 recorded · 349 measured · Source: the US BTS Saturday · 476 · 476 recorded · 462 measured · Source: the US BTS Sunday · 354 · 354 recorded · 347 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.0%14.8 min345348
Tuesday88.8%4.1 min338338
Wednesday85.5%7.9 min337340
Thursday84.4%4.1 min352352
Friday87.7%2.5 min349352
Saturday76.8%16.5 min462476
Sunday78.1%12.5 min347354

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 79.5% · 318 recorded · 307 measured · Source: the US BTS Feb · 81.1% · 268 recorded · 265 measured · Source: the US BTS Mar · 81.3% · 320 recorded · 315 measured · Source: the US BTS Apr · 84.7% · 256 recorded · 255 measured · Source: the US BTS May · 82.9% · 246 recorded · 246 measured · Source: the US BTS Jun · 88.9% · 254 recorded · 253 measured · Source: the US BTS Jul · 82.5% · 264 recorded · 263 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 78 recorded · 72 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 68 recorded · 68 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 116 recorded · 116 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 140 recorded · 139 measured · Source: the US BTS Dec · 76.2% · 232 recorded · 231 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 15.3 min · 318 recorded · 307 measured · Source: the US BTS Feb · 10.9 min · 268 recorded · 265 measured · Source: the US BTS Mar · 12.3 min · 320 recorded · 315 measured · Source: the US BTS Apr · 4.6 min · 256 recorded · 255 measured · Source: the US BTS May · 5.1 min · 246 recorded · 246 measured · Source: the US BTS Jun · 1.0 min · 254 recorded · 253 measured · Source: the US BTS Jul · 7.3 min · 264 recorded · 263 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 78 recorded · 72 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 68 recorded · 68 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 116 recorded · 116 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 140 recorded · 139 measured · Source: the US BTS Dec · 15.8 min · 232 recorded · 231 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 318 · 318 recorded · 307 measured · Source: the US BTS Feb · 268 · 268 recorded · 265 measured · Source: the US BTS Mar · 320 · 320 recorded · 315 measured · Source: the US BTS Apr · 256 · 256 recorded · 255 measured · Source: the US BTS May · 246 · 246 recorded · 246 measured · Source: the US BTS Jun · 254 · 254 recorded · 253 measured · Source: the US BTS Jul · 264 · 264 recorded · 263 measured · Source: the US BTS Aug · 78 · 78 recorded · 72 measured · Source: the US BTS Sep · 68 · 68 recorded · 68 measured · Source: the US BTS Oct · 116 · 116 recorded · 116 measured · Source: the US BTS Nov · 140 · 140 recorded · 139 measured · Source: the US BTS Dec · 232 · 232 recorded · 231 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan79.5%15.3 min307318
Feb81.1%10.9 min265268
Mar81.3%12.3 min315320
Apr84.7%4.6 min255256
May82.9%5.1 min246246
Jun88.9%1.0 min253254
Jul82.5%7.3 min263264
AugFewer than 200 measured departures—7278
SepFewer than 200 measured departures—6868
OctFewer than 200 measured departures—116116
NovFewer than 200 measured departures—139140
Dec76.2%15.8 min231232

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 81.8% 2,093
  • Delayed >15 min 17.1% 437
  • Cancelled 1.2% 30
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

16
16 of 16
Flight numbersBy direction DeparturesOn time
DL1889 ATL → STT 451 82.0%
DL1883 STT → ATL 251 80.8%
DL1950 STT → ATL 244 81.7%
DL1823 STT → ATL 242 81.2%
DL1950 ATL → STT 203 83.7%
DL1899 ATL → STT 195 86.5%
DL1883 ATL → STT 168 88.6%
DL1774 STT → ATL 137 66.7%
DL1823 ATL → STT 132 90.8%
DL1754 STT → ATL 116 89.6%
DL1902 ATL → STT 115 85.2%
DL1857 STT → ATL 62 80.0%
DL1902 STT → ATL 60 81.7%
DL1899 STT → ATL 58 84.5%
DL2148 STT → ATL 52 78.9%
DL1889 STT → ATL 30 96.7%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 131 −0.8% 1 80.9%
June 2026 126 −0.8% 0 87.3%
May 2026 124 +1.6% 0 79.8%
April 2026 144 +29.7% 0 85.4%
March 2026 182 +36.8% 4 84.1%
February 2026 146 +22.7% 2 84.2%
January 2026 169 +22.5% 9 79.3%
December 2025 113 −4.2% 1 77.0%
November 2025 69 −1.4% 1 84.1%
October 2025 70 +52.2% 0 84.3%
September 2025 68 0 85.3%
August 2025 72 6 80.6%
July 2025 132 0 84.1%
June 2025 127 1 90.6%
May 2025 122 0 86.1%
April 2025 111 1 83.8%
March 2025 133 1 77.4%
February 2025 119 1 77.3%
January 2025 138 2 79.7%
December 2024 118 0 75.4%
November 2024 70 0 94.3%
October 2024 46 0 89.1%

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