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Flight records through . Security counts through .

Which SEA to IAH flight is punctual? United 2748, 5 am.

90% on time across 63 flights in the last 3 months, never cancelled.

Find your flightSEA security
DepartsFlightOn time
5:00 amUA 274890%
12:10 pmUA 175290%
7:05 amUA 213590%
5:33 pmAS 157988%
5:00 pmUA 166087%
11:55 amUA 229386%
11:57 pmAS 39884%
11:49 pmUA 237982%
8 of 10 regular flights, ranked by arrivals on time, June to August 2026.

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

United landed on time 88% of the time, Alaska 78%.

Flight records,

  • United

    88%

    on time

    0.2% cancelled

  • Alaska

    78%

    on time

    0.5% cancelled

When do the flights leave? 10 regular flights, 5 am to 11:57 pm.

AS 398 was cancelled most often, 1% of the time.

Flight records,

  1. UA 2748 5:00 am, 0% cancelled 90%
  2. UA 2135 7:05 am, 0% cancelled 90%
  3. UA 2293 11:55 am, 0% cancelled 86%
  4. UA 1752 12:10 pm, 0% cancelled 90%
  5. UA 1660 5:00 pm, 0% cancelled 87%
  6. UA 2379 11:49 pm, 0% cancelled 82%
  1. AS 438 10:52 am, 0% cancelled 67%
  2. AS 1573 5:33 pm, 0% cancelled 73%
  3. AS 1579 5:33 pm, 0% cancelled 88%
  4. AS 398 11:57 pm, 1% cancelled 84%

What time should I fly? The 7 am departures.

93% landed on time; at 11 am, 70%. Tuesday was the best day, Friday the worst.

Flight records,

DepartsLanded on time
5 am90%
6 am91%
7 am93%
9 am89%
10 am76%
11 am70%
12 pm83%
1 pm84%
2 pm78%
5 pm86%
11 pm82%

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.