UA1139United Airlines · BOI → DEN
updated 1h ago
Route confirmed United Airlines

UA1139 BoiseBOI DenverDEN

UA1139 by United Airlines flies from Boise (BOI) to Denver (DEN).

Right nowNext departure today Operates daily
18:20

scheduled from BOI

The route today

live boards
BOIBoiseOn-time likelyBOI delay board →
DENDenverOn-time likelyDEN delay board →
BOI→DENevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
43%Chance of 15+ min delay
0.9%Chance of cancellation
+10 minTypical airport delay in this weather

Conditions at BOI and DEN 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 BOI

Forecast

Thu 12 Nov, local date

High19°Clikely 17°C to 21°C
Low6°Clikely 4°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 DEN

Forecast

Thu 12 Nov, local date

High20°Clikely 18°C to 21°C
Low3°Clikely 2°C to 5°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.

Other Boise to Denver flights today

same route · United Airlines
UA5924departs 05:00
UA2154departs 06:30
UA5482departs 06:30
UA5229departs 10:34
UA2173departs 14:51
UA2395departs 17:44

If UA1139 is cancelled, these are the other United Airlines nonstop flights from Boise to Denver on the same day, with scheduled departure times in BOI 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 UA1139 actually runs

Pro Flight Search has tracked every published board update for UA1139 across the BOI and DEN boards: schedule changes, gate pushes and actual clocks. Combined risk score: 9.3/100. Based on airport operations, weather, and cached board history at BOI and DEN.

The verdict above is that record speaking, so it reflects how UA1139 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA1139? 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: UA1139 Boise to Denver on-time performance, measured from the BOI and DEN airport boards.

Canonical URL
https://proflightsearch.com/flight/UA1139
How we measure this →