Will UA521 be delayed today?
Houston → Boston Logan · Sat 31 Oct · United
updated Houston time
Unlikely. It should leave close to 18:35.
It should have left by now. The board hasn't shown it leaving yet.
No6%Unlikely20%Maybe45%Probably70%Very likely93%% of flights that really left 15+ min late when we said that word ›Leaves18:35≈18:33
Lands23:39≈23:27
As of 09:19, UA521 should push back about 18:33 (scheduled 18:35) and land about 23:27 (scheduled 23:39).
Boarding still follows the original schedule.
Why ≈2 min early
A usual eveningUA521's typical departure, last 90 days2
Your planeNot assigned yet0
More rain than usualFrom our forecast: 94% chance of rain at Houston today+1
Houston is running smoothly0% of departures in the last hour left 15+ min late−1
United is running well today8% of its departures in the last three hours left 15+ min late; earlier on this route: 8 min early−2
FAA plan for todayThe FAA expects constraints at Houston today−2
Leaves≈−2−6 to 14
Made up in the air−10
Lands≈−12
weather at Bostonstorms, quakes, volcanoes
Cancelled? < 1 in 200
Check again 15:35Houston time
Meeting someone?
Last 90 days
44on time
18late
23very late
0cancelled
M
T
W
T
F
S
S
UA521 Houston to Boston left within 15 minutes of schedule on 44 of its last 85 flights, usually 11 minutes late, and 15 minutes or more late on 41. It wasn't cancelled once.