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Flight records through . Security counts through .

Which SEA to ATL flight is punctual? Delta 569, 6 am.

96% on time across 92 flights in the last 3 months, never cancelled.

Find your flightSEA security
DepartsFlightOn time
6:00 amDL 56996%
11:59 pmDL 65294%
11:31 pmAS 46487%
4:05 pmDL 56086%
10:58 pmDL 40985%
1:35 pmDL 54285%
9:45 pmDL 56781%
4:05 pmAS 72778%
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 83% of the time, Alaska 82%.

Flight records,

  • Delta

    83%

    on time

    0.7% cancelled

  • Alaska

    82%

    on time

    0.6% cancelled

When do the flights leave? 12 regular flights, 6 am to 11:59 pm.

DL 797 was cancelled most often, 5% of the time.

Flight records,

  1. DL 569 6:00 am, 0% cancelled 96%
  2. DL 562 7:20 am, 2% cancelled 73%
  3. DL 797 8:40 am, 5% cancelled 65%
  4. DL 554 11:56 am, 0% cancelled 73%
  5. DL 542 1:35 pm, 0% cancelled 85%
  6. DL 560 4:05 pm, 0% cancelled 86%
  7. DL 567 9:45 pm, 2% cancelled 81%
  8. DL 409 10:58 pm, 0% cancelled 85%
  9. DL 652 11:59 pm, 0% cancelled 94%
  1. AS 334 9:05 am, 0% cancelled 65%
  2. AS 727 4:05 pm, 0% cancelled 78%
  3. AS 464 11:31 pm, 0% cancelled 87%

What time should I fly? The 6 am departures.

94% landed on time; at 9 am, 74%. Wednesday was the best day, Sunday the worst.

Flight records,

DepartsLanded on time
6 am94%
7 am81%
8 am80%
9 am74%
10 am86%
11 am76%
1 pm82%
2 pm76%
3 pm80%
4 pm84%
5 pm84%
9 pm84%
10 pm87%
11 pm87%

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.