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United Airlines

Is UA4 delayed?

No delay reported yet. UA4 is scheduled to leave London at 12:05 on Nov 15 and reach Houston at 16:31 (as of Nov 15, 08:09 UTC).

Usually on time: 27 of its last 30 graded arrivals landed within 15 min of schedule. We say “usually” only from 20 graded arrivals, with two in three or more on one side.

No live update yet

Showing the published schedule until live times come in.

Update time unavailable

Departure

London

LHR

Scheduled

Nov 15

Arrival

Houston

IAH

Scheduled

Nov 15

Times shown in airport local time

Service date: · Scheduled departure date (Europe/London)

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual
Not available

Route overview: London → HoustonLHRIAH
London → Houston

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • London → Houston

    50 min early

  • London → Houston

    64 min early

  • London → Houston

    32 min early

  • London → Houston

    27 min early

  • London → Houston

    19 min early

Is UA4 usually late?

Period: Oct 16, 2026 – Nov 15, 2026

Landings recorded
30
Graded against schedule
30
Not graded
0
On time
90%
of 30 flights
Late
10%
of 30 flights
Cancelled
0%
of 30 flights
Diverted
0%
of 30 flights
Median arrival delay
8 min early
9 in 10 arrived within
15 min

On time means landing no more than 15 minutes after the scheduled arrival, late more than 15 minutes after, both times read to the minute. The percentages share one base: graded arrivals plus cancelled and diverted flights. A cancelled plan another plan of the flight replaced within 12 hours is not counted. Median and “9 in 10” are interpolated over the graded arrivals. Compares scheduled and actual arrival times, read to the minute. Some flights may be missing.

How flight status works

Departures on record at these airports today

London Heathrow (LHR) departures

Delayed: took off more than 27 min after schedule (15 min plus the usual 12-min taxi)
4 delayed, 1 cancelled of 51 departures on record
Flights from London Heathrow to Houston today

Houston (IAH) departures

Too few departures on record with a known outcome so far today to judge: 1 of 20 needed.

Counts cover the departures on record at each airport, not its full schedule.

Related flights

Other flights LHR → IAH

Return flights IAH → LHR

All United Airlines flights

Flight history and details
UA4 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Nov 14, 2026ArrivedLondonHouston-50
Nov 13, 2026ArrivedLondonHouston-64
Nov 12, 2026ArrivedLondonHouston-32
Nov 11, 2026ArrivedLondonHouston-27
Nov 10, 2026ArrivedLondonHouston-19
Nov 9, 2026ArrivedLondonHouston17
Nov 8, 2026ArrivedLondonHouston12
Nov 7, 2026ArrivedLondonHouston-1
Nov 6, 2026ArrivedLondonHouston-8
Nov 5, 2026ArrivedLondonHouston-15
Nov 4, 2026ArrivedLondonHouston-17
Nov 3, 2026ArrivedLondonHouston3
Nov 2, 2026ArrivedLondonHouston-22
Nov 1, 2026ArrivedLondonHouston-24
Oct 31, 2026ArrivedLondonHouston-7
Oct 30, 2026ArrivedLondonHouston1
Oct 29, 2026ArrivedLondonHouston3
Oct 28, 2026ArrivedLondonHouston-2
Oct 27, 2026ArrivedLondonHouston-8
Oct 26, 2026ArrivedLondonHouston-5
Oct 25, 2026ArrivedLondonHouston3
Oct 24, 2026ArrivedLondonHouston-15
Oct 23, 2026ArrivedLondonHouston-13
Oct 22, 2026ArrivedLondonHouston-3
Oct 21, 2026ArrivedLondonHouston275
Oct 20, 2026ArrivedLondonHouston6
Oct 19, 2026ArrivedLondonHouston15
Oct 18, 2026ArrivedLondonHouston19
Oct 17, 2026ArrivedLondonHouston-25
Oct 16, 2026ArrivedLondonHouston-19
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