UA3815United Airlines · BOS → LAS
live · 20m ago
Route confirmed United Airlines

UA3815 BostonBOS Las VegasLAS

UA3815 by United Airlines flies from Boston (BOS) to Las Vegas (LAS).

Right nowNext departure Saturday Operates Sat Sun
13:00

scheduled from BOS

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
LASLas VegasOn-time likelyLAS delay board →
BOS→LASevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
1.8%Chance of cancellation
+6 minTypical airport delay in this weather

Conditions at BOS and LAS 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 at BOS

Forecast

Tue 10 Nov, local date

High14°Clikely 13°C to 15°C
Low7°Clikely 6°C to 8°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 Las Vegas

Forecast

Tue 10 Nov, local date

High25°Clikely 24°C to 26°C
Low13°Clikely 12°C to 14°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.

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 UA3815 actually runs

Pro Flight Search has tracked every published board update for UA3815 across the BOS and LAS boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at BOS and LAS.

The verdict above is that record speaking, so it reflects how UA3815 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3815? 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: UA3815 Boston to Las Vegas on-time performance, measured from the BOS and LAS airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3815
How we measure this →