Schedule: the flights that flew on Sunday, Oct 25, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

SOUTHWEST · FLIGHT WN 3497 SCHEDULED · TYPICAL SCHEDULE

Sunday, November 1 Tomorrow

WN 3497 · STL → BOS

departs 9:06 PM CT · arrives 1:00 AM ET

Forecast issued Sat 7:00 AM ET · 40h before departure

Arrive at BOS more than 15 minutes late?

35% chance · ±4 pts +4 pts · 24h

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

How late will it get to BOS?

On time or early
65%
15–30 min late
16%
30 min–1 hour late
12%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
<1%

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

What’s moving the odds

↑ WN's recent on-time record

↑ 9pm departures from STL are often late

↑ This flight has been late 34% of the time recently

↓ Mostly benign weather forecast at BOS

↓ Sundays in November are usually quieter than average

Weather at each end

STL (origin) Gusts13 kt Ceiling300 ft Visibility2 mi Precip0.02 in

BOS (destination) Gusts11 kt Ceilingnone (clear) 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.

WN 3497 · STL → BOS

Odds over time

How late will it get to BOS?