WN1555Southwest Airlines · DEN → BOS
live · 29m ago
Route confirmed Southwest Airlines

WN1555 DenverDEN · 19:20 BostonBOS · 01:15

WN1555 by Southwest Airlines flies from Denver (DEN) to Boston (BOS).

Right nowNext departure today Operates daily
12:15

scheduled from DEN

Typical gate push+0 minmedian posted departure
Typical arrival−26 minmedian over 3 operations
Wins back in air~26 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
11-06
+0 gate · −26 arrival
10-30
+0 gate · −26 arrival
10-29
+1 gate · −17 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
55%Chance of 15+ min delay
10%Chance of cancellation
+29 minTypical airport delay in this weather

Driven mainly by BOS (Boston), 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 at Denver

Forecast

Sat 7 Nov, local date

High17°Clikely 15°C to 19°C
Low1°Clikely 0°C to 3°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Boston

Forecast

Sat 7 Nov, local date

High17°Clikely 15°C to 19°C
Low12°Clikely 9°C to 14°C
  • 97% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · 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 · Southwest Airlines
WN1462departs 06:10
WN3559departs 10:25
WN1436departs 10:40
WN158departs 10:50
WN1553departs 11:00
WN3094departs 11:10

If WN1555 is cancelled, these are the other Southwest 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 WN1555 actually runs

Pro Flight Search has tracked every published board update for WN1555 across the DEN and BOS boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: left right on schedule but landed about 26 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how WN1555 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
11-06DEN 19:20 (+0)BOS 01:15 00:49 (−26)
10-30DEN 19:20 (+0)BOS 01:15 00:49 (−26)
10-29DEN 19:20 19:21 (+1)BOS 01:15 00:58 (−17)

Aircraft

Recent tails: N8858K, N8989L, N8947Q.

Board clocks recorded as DEN and BOS published them.

Planning around WN1555? 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: WN1555 Denver to Boston on-time performance, measured from the DEN and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/WN1555
How we measure this →