Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 2171
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
DL 2171 · DTW → PDX
departs 8:54 AM ET · arrives 10:36 AM PT
Forecast issued Thu 10:00 PM ET · 59h before departure
Watch this flight
Other days
Today 13%
Fri 10/2 32%
Sat 10/3 8%
Sun 10/4
Mon 10/5 9%
Tue 10/6 7%
Wed 10/7 8%
Odds over time
Arrive at PDX more than 15 minutes late?
8%
chance · ±0 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
11%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
5.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at PDX more than 15 minutes late?
Calm-weather odds: 7% · changed – in 24h
–
8%
Yes 8%
No 92%
Leave DTW more than 15 minutes late?
Calm-weather odds: 11% · changed – in 24h
–
11%
Yes 11%
No 89%
Arrive at PDX more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to PDX?
On time or early
92%
15–30 min late
2%
30 min–1 hour late
3%
1–2 hours late
1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Other factors
↑
This flight has been late 13% of the time recently
↓
Mostly benign weather forecast at DTW
↓
Sundays in October are usually quieter than average
Weather at each end
DTW (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
PDX (destination)
Gusts 5 kt Ceiling 200 ft Visibility 9 mi Precip none
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.