Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

UNITED · FLIGHT UA 800 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1 Tomorrow

UA 800 · BOS → DEN

departs 4:57 PM ET · arrives 7:45 PM MT

Forecast issued Wed 9:00 AM ET · 32h before departure

Arrive at DEN more than 15 minutes late?

30% chance · ±5 pts −3 pts · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to DEN?

On time or early
70%
15–30 min late
13%
30 min–1 hour late
6%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
<1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ Arrivals into DEN at that hour are often late

↑ 4pm departures from BOS are often late

↑ Later flights pick up delays from earlier in the day

↓ Other factors

↓ Thursdays in October are usually quieter than average

Weather at each end

BOS (origin) Gusts16 kt Ceilingnone (clear) Visibility9 mi Precipnone

DEN (destination) Gusts21 kt Ceiling7,000 ft Visibility10+ mi Precipnone

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

UA 800 · BOS → DEN

Odds over time

How late will it get to DEN?