UA1644United Airlines · SJU → IAH
live · 44m ago
Route confirmed United Airlines

UA1644 San JuanSJU · 07:40 HoustonIAH · 10:46

UA1644 by United Airlines flies from San Juan (SJU) to Houston (IAH) for the Thu, Nov 12 departure.

Right nowExpected · today · as of 08:38
07:40

departs SJU · on schedule

Typical arrival−18 minmedian over 3 operations
Wins back in air~25 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
11-12
−18 arrival
11-11
+7 gate · −16 arrival
11-10
−27 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
SJUSan JuanOn-time likelySJU delay board →
IAHHoustonOn-time likelyIAH delay board →
SJU→IAHevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
41%Chance of 15+ min delay
1.0%Chance of cancellation
+26 minTypical airport delay in this weather

Conditions at SJU and IAH are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →

Tomorrow at San Juan

Forecast

Fri 13 Nov, local date

High33°Clikely 32°C to 34°C
Low27°Clikely 26°C to 28°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Houston

Forecast

Fri 13 Nov, local date

High25°Clikely 23°C to 26°C
Low11°Clikely 9°C to 12°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

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 San Juan to Houston flights today

same route · United Airlines
UA668departs 15:46

If UA1644 is cancelled, this is the other United Airlines nonstop flight from San Juan to Houston on the same day, with scheduled departure times in SJU local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA1644 actually runs

Pro Flight Search has tracked every published board update for UA1644 across the SJU and IAH boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: left a little late (~7 min) but landed about 21 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA1644 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-12SJU 07:40IAH 10:46 10:28 (−18)
11-11SJU 07:40 07:47 (+7)IAH 10:46 10:30 (−16)
11-10SJU IAH 10:46 10:19 (−27)

Aircraft

Recent tails: N17448.

Board clocks recorded as SJU and IAH published them.

Planning around UA1644? 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: UA1644 San Juan to Houston on-time performance, measured from the SJU and IAH airport boards.

Canonical URL
https://proflightsearch.com/flight/UA1644
How we measure this →