UA503United Airlines · BOS → FLL
live · 35m ago
Route confirmed United Airlines

UA503 BostonBOS · 10:42 Fort LauderdaleFLL · 12:46

UA503 by United Airlines flies from Boston (BOS) to Fort Lauderdale (FLL).

Same number through BOS → ORD → FLL

Right nowNext departure tomorrow Operates daily
10:36

scheduled from BOS

Typical gate push+0 minmedian posted departure

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
10-31
+0 gate
10-30
+0 gate
10-26
+0 gate

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
BOSBostonOn-time likelyBOS delay board →
FLLFort LauderdaleOn-time likelyFLL delay board →
BOS→FLLevery 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
3.0%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at BOS and FLL 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 on this route

Forecast

Boston to Chicago with United Airlines · Sun 1 Nov, local date

Outlook: below usual
Chance a departure is cancelled
0.4%0.3× usual
Chance a departure leaves 60+ min late
9.7%0.6× usual

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 8 departures a day on this route with this airline. · 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 Boston to Fort Lauderdale flights today

same route · United Airlines
UA1414departs 06:00
UA2631departs 07:01
UA1834departs 07:31
UA1097departs 07:55
UA1349departs 09:12
UA1732departs 11:55

If UA503 is cancelled, these are the other United Airlines nonstop flights from Boston to Fort Lauderdale on the same day, with scheduled departure times in BOS 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 UA503 actually runs

Pro Flight Search has tracked every published board update for UA503 across the BOS and FLL boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 5 confirmed landings · 5/5 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 UA503 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
10-31BOS 10:42 (+0)FLL
10-30BOS 10:42 (+0)FLL
10-26BOS 10:25 (+0)FLL

Board clocks recorded as BOS and FLL published them.

Planning around UA503? 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: UA503 Boston to Fort Lauderdale on-time performance, measured from the BOS and FLL airport boards.

Canonical URL
https://proflightsearch.com/flight/UA503
How we measure this →