UA1540United Airlines · FLL → SFO
live · 12m ago
Route confirmed United Airlines

UA1540 Fort LauderdaleFLL · 08:03 San FranciscoSFO · 11:01

UA1540 by United Airlines flies from Fort Lauderdale (FLL) to San Francisco (SFO).

Right nowNext departure today Operates daily
08:03

scheduled from FLL

⚖ UA1540 typically leaves +19 and lands −6. The air wins minutes back.
Typical gate push+19 minmedian posted departure
Typical arrival−6 minmedian over 9 operations
Wins back in air~25 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
08-17
+31 gate · −2 arrival
08-10
+31 gate · −2 arrival
08-09
+15 gate · −16 arrival
08-08
+20 gate · −6 arrival
08-07
+35 gate · −1 arrival
08-06
+16 gate · −14 arrival
08-05
+14 gate · +17 arrival

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

The last 30 days

arrival outcome per operation

median arrival −6 min · 0 cancelled · 9 operations tracked

The route today

live boards
FLLFort LauderdaleModerate riskFLL delay board →
SFOSan FranciscoModerate riskSFO delay board →
FLL→SFOevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
61%Chance of 15+ min delay
2.8%Chance of cancellation
+26 minAvg hub delay right now

Conditions at FLL and SFO 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.

How UA1540 actually runs

Pro Flight Search has tracked every published board update for UA1540 across the FLL and SFO boards: schedule changes, gate pushes and actual clocks. Usually lands ~6 min early. Based on 9 confirmed landings · 8/9 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how UA1540 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
08-17FLL 08:03 08:34 (+31)SFO 11:01 10:59 (−2)
08-10FLL 08:03 08:34 (+31)SFO 11:01 10:59 (−2)
08-09FLL 08:03 08:18 (+15)SFO 11:01 10:45 (−16)
08-08FLL 08:03 08:23 (+20)SFO 11:01 10:55 (−6)
08-07FLL 08:03 08:38 (+35)SFO 11:01 11:00 (−1)
08-06FLL 08:03 08:19 (+16)SFO 11:01 10:47 (−14)
08-05FLL 07:55 08:09 (+14)SFO 10:53 11:10 (+17)
08-04FLL 08:03 08:22 (+19)SFO 11:01 10:39 (−22)
08-03FLL 08:03 08:20 (+17)SFO 11:01 10:45 (−16)

Aircraft

Recent tails: N17431, N57416, N17437, N17430.

Board clocks recorded as FLL and SFO published them.

Planning around UA1540? 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 — UA1540 Fort Lauderdale to San Francisco on-time performance, measured from the FLL and SFO airport boards.

Canonical URL
https://proflightsearch.com/flight/UA1540
How we measure this →