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Flight records through . Security counts through .

Which SEA to JFK flight is punctual? Delta 429, 7:15 am.

89% on time across 92 flights in the last 3 months, 3.3% cancelled.

Find your flightSEA security
DepartsFlightOn time
7:15 amDL 42989%
7:00 amAS 2688%
11:15 pmAS 2286%
10:40 pmDL 45283%
9:29 amAS 3470%
11:34 amDL 41562%
2:02 pmAS 1651%
10:13 pmB6 26448%
8 of 9 regular flights, ranked by arrivals on time, June to August 2026.

Which airline is most reliable? Delta and Alaska, neck and neck.

Delta landed on time 76% of the time, Alaska 75%.

Flight records,

  • Delta

    76%

    on time

    3.2% cancelled

  • Alaska

    75%

    on time

    2.6% cancelled

When do the flights leave? 9 regular flights, 7 am to 11:15 pm.

B6 264 was cancelled most often, 12% of the time.

Flight records,

  1. DL 429 7:15 am, 3% cancelled 89%
  2. DL 415 11:34 am, 3% cancelled 62%
  3. DL 461 4:00 pm, 5% cancelled 46%
  4. DL 452 10:40 pm, 4% cancelled 83%
  1. AS 26 7:00 am, 3% cancelled 88%
  2. AS 34 9:29 am, 4% cancelled 70%
  3. AS 16 2:02 pm, 4% cancelled 51%
  4. AS 22 11:15 pm, 0% cancelled 86%

What time should I fly? The 8 am departures.

87% landed on time; at 2 pm, 62%. Wednesday was the best day, Sunday the worst.

Flight records,

DepartsLanded on time
7 am84%
8 am87%
9 am71%
10 am80%
11 am64%
1 pm67%
2 pm62%
3 pm72%
4 pm65%
9 pm85%
10 pm73%
11 pm85%

When is SEA security busiest? 6 to 10 every morning.

Calmest around 5 pm. Seattle security, hour by hour.

Security counts,

4a8a12p4p8p
Mon
Tue
Wed
Thu
Fri
Sat
Sun
MonTueWedThuFriSatSun
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p

Friday, 7 am

4,660

people screened, all terminals.