Airports AirportPace Search

Flight records through . Security counts through .

Which SEA to BOS flight is punctual? Alaska 1505, 6:03 am.

97% on time across 31 flights in the last 3 months, never cancelled.

Find your flightSEA security
DepartsFlightOn time
6:03 amAS 150597%
7:29 amDL 45991%
11:15 pmDL 47387%
11:18 pmAS 53681%
3:36 pmAS 46074%
8:23 amAS 30670%
10:13 amAS 21960%
11:15 amDL 43856%
8 of 11 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 78% of the time, Alaska 76%.

Flight records,

  • Delta

    78%

    on time

    1.7% cancelled

  • Alaska

    76%

    on time

    1.1% cancelled

When do the flights leave? 11 regular flights, 6:03 am to 11:44 pm.

B6 198 was cancelled most often, 5% of the time.

Flight records,

  1. DL 459 7:29 am, 3% cancelled 91%
  2. DL 438 11:15 am, 0% cancelled 56%
  3. DL 474 4:00 pm, 4% cancelled 54%
  4. DL 473 11:15 pm, 2% cancelled 87%
  1. AS 1505 6:03 am, 0% cancelled 97%
  2. AS 306 8:23 am, 0% cancelled 70%
  3. AS 219 10:13 am, 3% cancelled 60%
  4. AS 460 3:36 pm, 0% cancelled 74%
  5. AS 536 11:18 pm, 0% cancelled 81%

What time should I fly? The 6 am departures.

97% landed on time; at 11 am, 51%. Saturday was the best day, Monday the worst.

Flight records,

DepartsLanded on time
6 am97%
7 am86%
8 am74%
9 am74%
10 am56%
11 am51%
1 pm58%
3 pm76%
4 pm65%
10 pm78%
11 pm73%

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.