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2,732 km · International

Boston Logan (BOS) – Cyril E. King (STT)

In July 2026, 12 flights operated between Boston Logan and Cyril E. King (both directions), and 58.3% 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 periods18 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January1890▲ 400.0%
February1478▲ 457.1%
March1890▲ 400.0%
April2178▲ 271.4%
May550.0%
June410▲ 150.0%
July412▲ 200.0%
August4––
September–––
October4–in progress
November10––
December44––
Year to date (Jan–Jul)84363▲ 332.1%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods18 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January94.4%80.0%▼ 15.3%
February78.6%73.1%▼ 7.0%
March94.4%81.1%▼ 14.1%
April85.7%92.3%▲ 7.7%
May80.0%100.0%▲ 25.0%
June100.0%80.0%▼ 20.0%
July100.0%58.3%▼ 41.7%
August75.0%––
September–––
October100.0%–in progress
November90.0%––
December79.5%––
Year-to-date average (Jan–Jul)90.4%80.7%▼ 10.8%

Cancelled flights by month

The most recent periods18 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January08–
February07–
March03–
April00–
May00–
June00–
July01–
August1––
September–––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)019

Airlines on this route

  1. JetBlue Airways 55.4%
  2. Delta Air Lines 44.6%

Oct 1, 2024 – Jul 31, 2026

By direction

BOS → STT

Scheduled flights
443
Flights operated
429
Cancelled
14 · 3.2%
On-time departures
84.6%

STT → BOS

Scheduled flights
127
Flights operated
121
Cancelled
6 · 4.7%
On-time departures
76.9%

BOS → STT and STT → BOS counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
JetBlue Airways B6 316 55.4% 83.4% 8
Delta Air Lines DL 254 44.6% 82.2% 12

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 delay08:00–09:0013.8min · 246 recorded · 235 measured
Recorded flights570BOS–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 · Fewer than 200 measured departures · 19 recorded · 19 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 75 recorded · 74 measured · Source: the US BTS 08:00 · 84.7% · 246 recorded · 235 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 48 recorded · 47 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 50 recorded · 49 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 127 recorded · 121 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 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 · Fewer than 200 measured departures · 19 recorded · 19 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 75 recorded · 74 measured · Source: the US BTS 08:00 · 13.8 min · 246 recorded · 235 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 48 recorded · 47 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 50 recorded · 49 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 127 recorded · 121 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 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 · 19 · 19 recorded · 19 measured · Source: the US BTS 07:00 · 75 · 75 recorded · 74 measured · Source: the US BTS 08:00 · 246 · 246 recorded · 235 measured · Source: the US BTS 09:00 · 48 · 48 recorded · 47 measured · Source: the US BTS 10:00 · 50 · 50 recorded · 49 measured · Source: the US BTS 11:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · 127 · 127 recorded · 121 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 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.

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———
06:00Fewer than 200 measured departures—1919
07:00Fewer than 200 measured departures—7475
08:0084.7%13.8 min235246
09:00Fewer than 200 measured departures—4748
10:00Fewer than 200 measured departures—4950
11:00Fewer than 200 measured departures—55
12:00No observations———
13:00No observations———
14:00Fewer than 200 measured departures—121127
15:00No observations———
16:00No observations———
17:00No observations———
18:00No observations———
19:00No observations———
20:00No observations———
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 58 · 58 recorded · 52 measured · Source: the US BTS Tuesday · 89 · 89 recorded · 86 measured · Source: the US BTS Wednesday · 56 · 56 recorded · 55 measured · Source: the US BTS Thursday · 81 · 81 recorded · 81 measured · Source: the US BTS Friday · 71 · 71 recorded · 70 measured · Source: the US BTS Saturday · 146 · 146 recorded · 140 measured · Source: the US BTS Sunday · 69 · 69 recorded · 66 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—5258
TuesdayFewer than 200 measured departures—8689
WednesdayFewer than 200 measured departures—5556
ThursdayFewer than 200 measured departures—8181
FridayFewer than 200 measured departures—7071
SaturdayFewer than 200 measured departures—140146
SundayFewer than 200 measured departures—6669

Month of year

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

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 116 · 116 recorded · 108 measured · Source: the US BTS Feb · 99 · 99 recorded · 92 measured · Source: the US BTS Mar · 111 · 111 recorded · 108 measured · Source: the US BTS Apr · 99 · 99 recorded · 99 measured · Source: the US BTS May · 10 · 10 recorded · 10 measured · Source: the US BTS Jun · 14 · 14 recorded · 14 measured · Source: the US BTS Jul · 17 · 17 recorded · 16 measured · Source: the US BTS Aug · 5 · 5 recorded · 4 measured · Source: the US BTS Sep · No observations · 0 recorded · 0 measured · Source: the US BTS Oct · 9 · 9 recorded · 9 measured · Source: the US BTS Nov · 23 · 23 recorded · 23 measured · Source: the US BTS Dec · 67 · 67 recorded · 67 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—108116
FebFewer than 200 measured departures—9299
MarFewer than 200 measured departures—108111
AprFewer than 200 measured departures—9999
MayFewer than 200 measured departures—1010
JunFewer than 200 measured departures—1414
JulFewer than 200 measured departures—1617
AugFewer than 200 measured departures—45
SepNo observations———
OctFewer than 200 measured departures—99
NovFewer than 200 measured departures—2323
DecFewer than 200 measured departures—6767

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 80.0% 456
  • Delayed >15 min 16.5% 94
  • Cancelled 3.5% 20
  • 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

5
Flight numbersBy direction DeparturesOn time
B66807 BOS → STT 176 82.9%
B66907 BOS → STT 140 84.1%
DL1081 BOS → STT 110 87.6%
DL407 STT → BOS 61 73.7%
DL352 STT → BOS 49 83.3%

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 12 +200.0% 1 58.3%
June 2026 10 +150.0% 0 80.0%
May 2026 5 +0.0% 0 100.0%
April 2026 78 +271.4% 0 92.3%
March 2026 90 +400.0% 3 81.1%
February 2026 78 +457.1% 7 73.1%
January 2026 90 +400.0% 8 80.0%
December 2025 44 +91.3% 0 79.5%
November 2025 10 −23.1% 0 90.0%
October 2025 4 −20.0% 0 100.0%
August 2025 4 1 75.0%
July 2025 4 0 100.0%
June 2025 4 0 100.0%
May 2025 5 0 80.0%
April 2025 21 0 85.7%
March 2025 18 0 94.4%
February 2025 14 0 78.6%
January 2025 18 0 94.4%
December 2024 23 0 91.3%
November 2024 13 0 76.9%
October 2024 5 0 100.0%

How to read this chart

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