UA3863United Airlines · CUN → IAH
live · 5m ago
Route confirmed United Airlines

UA3863 CancúnCUN HoustonIAH

UA3863 by United Airlines flies from Cancún (CUN) to Houston (IAH).

Right nowNext departure today Operates daily
16:00

scheduled from CUN

The route today

live boards
CUNCancúnOn-time likelyCUN delay board →
IAHHoustonOn-time likelyIAH delay board →
CUN→IAHevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
25%Chance of 15+ min delay
4.3%Chance of cancellation
-1 minTypical airport delay in this weather

Conditions at CUN 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 Cancún

Forecast

Tue 10 Nov, local date

High30°Clikely 30°C to 31°C
Low24°Clikely 23°C to 25°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

Tue 10 Nov, local date

High24°Clikely 21°C to 26°C
Low14°Clikely 12°C to 16°C
  • 75% chance of rain

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 Cancún to Houston flights today

same route · United Airlines
UA128departs 05:30
UA1059departs 08:39
UA1081departs 12:28
UA1056departs 14:44
UA1019departs 16:47
UA1058departs 18:16

If UA3863 is cancelled, these are the other United Airlines nonstop flights from Cancún to Houston on the same day, with scheduled departure times in CUN 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 UA3863 actually runs

Pro Flight Search has tracked every published board update for UA3863 across the CUN and IAH boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at CUN and IAH.

The verdict above is that record speaking, so it reflects how UA3863 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3863? 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: UA3863 Cancún to Houston on-time performance, measured from the CUN and IAH airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3863
How we measure this →