UA1663United Airlines · IAH → PHL
live · 25m ago
Route confirmed United Airlines

UA1663 HoustonIAH · 18:05 PhiladelphiaPHL

UA1663 by United Airlines flies from Houston (IAH) to Philadelphia (PHL) for the Sun, Sep 6 departure.

Right nowScheduled · gate C6 · as of 19:59
19:50

departs IAH · 105 min late

Typical gate push+22 minmedian posted departure

The route today

live boards
IAHHoustonOn-time likelyIAH delay board →
PHLPhiladelphiaOn-time likelyPHL delay board →
IAH→PHLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
0.7%Chance of cancellation
+13 minAvg hub delay right now

Conditions at IAH and PHL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Houston to Philadelphia flights today

same route · United Airlines
UA1356departs 07:30
UA2642departs 07:31
UA2748departs 12:20

If UA1663 is cancelled, these are the other United Airlines nonstop flights from Houston to Philadelphia on the same day, with scheduled departure times in IAH local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How UA1663 actually runs

Pro Flight Search has tracked every published board update for UA1663 across the IAH and PHL boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +22 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA1663 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
09-05IAH 18:05 18:03 (−2)PHL
09-04IAH 18:05 18:27 (+22)PHL

Board clocks recorded as IAH and PHL published them.

Planning around UA1663? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — UA1663 Houston to Philadelphia on-time performance, measured from the IAH and PHL airport boards.

Canonical URL
https://proflightsearch.com/flight/UA1663
How we measure this →