Airports AirportPace Search

Flight records through . Security counts through .

Which JFK to SJU flight is punctual? Delta 1961, 12:40 pm.

79% on time across 92 flights in the last 3 months, never cancelled.

JFK to SJU flights that landed on time most often
DepartsFlightOn time
12:40 pmDL 196179%
5:01 amB6 40379%
8:00 amDL 196675%
10:00 amB6 50364%
8:29 amB6 160363%
12:00 pmB6 70363%
7:25 pmDL 185962%
7:00 amB6 90354%
8 of 11 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? Delta, by a distance.

Delta landed on time 76% of the time, JetBlue 65%.

Flight records,

  • Delta

    76%

    on time

    2.3% cancelled

  • JetBlue

    65%

    on time

    4.1% cancelled

When do the flights leave? 11 regular flights, 5:01 am to 8 pm.

B6 903 was cancelled most often, 14% of the time.

Flight records,

  1. DL 1966 8:00 am, 2% cancelled 75%
  2. DL 1961 12:40 pm, 0% cancelled 79%
  3. DL 1859 7:25 pm, 3% cancelled 62%
  1. B6 403 5:01 am, 3% cancelled 79%
  2. B6 903 7:00 am, 14% cancelled 54%
  3. B6 1603 8:29 am, 3% cancelled 63%
  4. B6 503 10:00 am, 13% cancelled 64%
  5. B6 703 12:00 pm, 1% cancelled 63%
  6. B6 803 3:50 pm, 8% cancelled 44%
  7. B6 2903 6:29 pm, 8% cancelled 50%
  8. B6 303 8:00 pm, 5% cancelled 34%

What time should I fly? The 5 am departures.

81% landed on time; at 8 pm, 47%. Friday was the best day, Sunday the worst.

Flight records,

Share of JFK to SJU flights landing less than 15 minutes late, by scheduled departure hour
DepartsBarLanded on time
5 am81%
6 am76%
7 am69%
8 am75%
9 am64%
10 am63%
11 am68%
12 pm79%
1 pm63%
2 pm70%
3 pm57%
4 pm63%
5 pm51%
6 pm58%
7 pm67%
8 pm47%
9 pm59%
10 pm68%

When is JFK security busiest? 6 am, then 2 to 6 pm.

Calmest around 11 am. New York JFK security, hour by hour.

Security counts,

People screened per hour at JFK checkpoints, by weekday and hour; choose a cell to read it
4a8a12p4p8p
Mon
Tue
Wed
Thu
Fri
Sat
Sun
People screened per hour at JFK checkpoints, by weekday and hour; choose a cell to read it
MonTueWedThuFriSatSun
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p

Thursday, 5 pm

6,240

people screened, all terminals.