UA558United Airlines · DEN → BOS
live · 3m ago
Route confirmed United Airlines

UA558 DenverDEN · 07:50 BostonBOS · 13:42

UA558 by United Airlines flies from Denver (DEN) to Boston (BOS) for the Fri, Oct 30 departure.

Right nowLanded in Boston · position data
13:21

arrived at BOS · 20 min early

Typical gate push−3 minmedian posted departure
Typical arrival−1 minmedian over 4 operations

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
10-30
−1 gate · −13 arrival
10-29
−4 gate · +13 arrival
10-28
−5 gate · +3 arrival
10-27
−2 gate · −6 arrival

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
DENDenverOn-time likelyDEN delay board →
BOSBostonOn-time likelyBOS delay board →
DEN→BOSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
45%Chance of 15+ min delay
2.6%Chance of cancellation
+13 minTypical airport delay in this weather

Driven mainly by DEN (Denver), currently flying IFR (instrument). 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

Denver to Boston with United Airlines · Sat 31 Oct, local date

Outlook: about usual
Chance a departure leaves 60+ min late
15%0.7× usual

Forecast weather: 55% chance of fog at Denver

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 5 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 Denver to Boston flights today

same route · United Airlines
UA1232departs 09:40
UA1846departs 13:45
UA597departs 13:55
UA779departs 15:40
UA1912departs 15:45
UA1356departs 17:52

If UA558 is cancelled, these are the other United Airlines nonstop flights from Denver to Boston on the same day, with scheduled departure times in DEN 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 UA558 actually runs

Pro Flight Search has tracked every published board update for UA558 across the DEN and BOS boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min late. Based on 2 confirmed landings · 2/2 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how UA558 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
10-30DEN 07:50 07:49 (−1)BOS 13:42 13:29 (−13)
10-29DEN 07:50 07:46 (−4)BOS 13:42 13:55 (+13)
10-28DEN 07:50 07:45 (−5)BOS 13:42 13:45 (+3)
10-27DEN 07:50 07:48 (−2)BOS 13:42 13:36 (−6)

Aircraft

Recent tails: N24555, N14559, N14564.

Board clocks recorded as DEN and BOS published them.

Planning around UA558? 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: UA558 Denver to Boston on-time performance, measured from the DEN and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/UA558
How we measure this →