UA755United Airlines · SFO → BOS
live · 6m ago
Route confirmed United Airlines

UA755 San FranciscoSFO · 12:45 BostonBOS · 21:05

UA755 by United Airlines flies from San Francisco (SFO) to Boston (BOS) for the Sun, Oct 18 departure.

Same number through SFO → IAD → BOS

Right nowLanded in Boston · today
20:44

arrived at BOS · 21 min early

Typical gate push−4 minmedian posted departure

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
10-18
−4 gate
10-17
−5 gate
10-16
−3 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
SFOSan FranciscoOn-time likelySFO delay board →
BOSBostonOn-time likelyBOS delay board →
SFO→BOSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
55%Chance of 15+ min delay
3.5%Chance of cancellation
+25 minAvg hub delay right now

Driven mainly by SFO (San Francisco), currently flying MVFR (marginal visual). 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.

Other San Francisco to Boston flights today

same route · United Airlines
UA2861departs 06:45
UA3903departs 07:00
UA599departs 08:10
UA336departs 10:50
UA1791departs 13:50
UA8110departs 16:35

If UA755 is cancelled, these are the other United Airlines nonstop flights from San Francisco to Boston on the same day, with scheduled departure times in SFO local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How UA755 actually runs

Pro Flight Search has tracked every published board update for UA755 across the SFO and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed -4 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA755 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
10-18SFO 12:45 12:41 (−4)BOS
10-17SFO 12:45 12:40 (−5)BOS
10-16SFO 12:45 12:42 (−3)BOS

Aircraft

Recent tails: N75858, N57855.

Board clocks recorded as SFO and BOS published them.

Planning around UA755? 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 — UA755 San Francisco to Boston on-time performance, measured from the SFO and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/UA755
How we measure this →