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Flight records through . Security counts through .

Which BOS to SEA flight is punctual? Delta 384, 7:45 am.

78% on time across 92 flights in the last 3 months, 2.2% cancelled.

Find your flightBOS security
DepartsFlightOn time
7:45 amDL 38478%
7:10 amB6 39776%
7:03 amAS 45975%
3:40 pmDL 288975%
3:26 pmAS 150674%
9:00 amAS 33873%
11:29 amDL 33272%
7:35 pmDL 32471%
8 of 12 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 70% of the time, Alaska 68%.

Flight records,

  • Delta

    70%

    on time

    1.6% cancelled

  • Alaska

    68%

    on time

    1.4% cancelled

When do the flights leave? 12 regular flights, 7:03 am to 7:59 pm.

AS 1337 was cancelled most often, 5% of the time.

Flight records,

  1. DL 384 7:45 am, 2% cancelled 78%
  2. DL 332 11:29 am, 3% cancelled 72%
  3. DL 2889 3:40 pm, 0% cancelled 75%
  4. DL 324 7:35 pm, 2% cancelled 71%
  1. AS 459 7:03 am, 0% cancelled 75%
  2. AS 338 9:00 am, 1% cancelled 73%
  3. AS 1506 3:26 pm, 0% cancelled 74%
  4. AS 304 5:56 pm, 1% cancelled 50%
  5. AS 1337 7:44 pm, 5% cancelled 51%
  6. AS 306 7:59 pm, 0% cancelled 64%

What time should I fly? The 4 pm departures.

77% landed on time; at 5 pm, 54%. Wednesday was the best day, Thursday the worst.

Flight records,

DepartsLanded on time
7 am74%
9 am74%
11 am74%
3 pm71%
4 pm77%
5 pm54%
6 pm59%
7 pm56%

When is BOS security busiest? 5 to 6 every morning.

Calmest around 12 pm. Boston 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

Monday, 6 am

5,710

people screened, all terminals.