Will your flight be late?
Tell us the flight. Pick the day you’re flying and we’ll give you the odds; they get sharper as the weather forecast, the FAA and your plane’s earlier flights come into focus.
0ground stops in effect right now
1FAA delay program right now
20%average chance of a late departure on Wednesday
1%average chance of a cancellation on Wednesday
Schedule: FAA flight plans for 11,521 flights; the other 15,323 (marked “typical”) come from a recent Wednesday’s schedule until the FAA publishes them, usually about a day ahead.
Airports on Wednesday, September 30
Forecasts for Wed, Sep 30, worst first. Forecast issued Tue 2:00 PM ET.
- Chance a departure that hour leaves 15+ min late on a normal day
- Extra today
DEN
Denver
#1
39%
leave 15+ min late
1%
cancelled, ~15 of 1117
+22 pts above normal
▼ 4 pts in 24 h
35%
Worst hour 6 PM · 63%
19 kt gusts, 1500 ft ceiling, 0.6 in rain
DFW
Dallas–Fort Worth
#2
32%
leave 15+ min late
4%
cancelled, ~50 of 1182
+12 pts above normal
▼ 3 pts in 24 h
35%
Worst hour 6 PM · 47%
31 kt gusts, 2200 ft ceiling, 0.1 in rain
ORD
Chicago O'Hare
#3
29%
leave 15+ min late
3%
cancelled, ~40 of 1404
+14 pts above normal
▲ 10 pts in 24 h
35%
Worst hour 7 PM · 44%
18 kt gusts, 800 ft ceiling, 0.46 in rain
SFO
San Francisco
#4
22%
leave 15+ min late
<1%
cancelled, ~5 of 533
+5 pts above normal
▲ 5 pts in 24 h
35%
Worst hour 3 PM · 31%
15 kt gusts, 1100 ft ceiling
LAS
Las Vegas
#5
21%
leave 15+ min late
<1%
cancelled, ~5 of 572
+3 pts above normal
▲ 2 pts in 24 h
35%
Worst hour 3 PM · 36%
16 kt gusts, high ceiling
PHX
Phoenix
#6
21%
leave 15+ min late
<1%
cancelled, ~6 of 678
+2 pts above normal
▲ 2 pts in 24 h
35%
Worst hour 6 PM · 35%
9 kt gusts, high ceiling
LAX
Los Angeles
#7
20%
leave 15+ min late
<1%
cancelled, ~6 of 662
+3 pts above normal
▲ 4 pts in 24 h
35%
Worst hour 3 PM · 26%
13 kt gusts, 1300 ft ceiling
MCO
Orlando
#8
19%
leave 15+ min late
1%
cancelled, ~5 of 519
+5 pts above normal
▲ 1 pt in 24 h
35%
Worst hour 9 PM · 36%
12 kt gusts, high ceiling, 0.08 in rain
BWI
Baltimore/Washington
#9
19%
leave 15+ min late
<1%
cancelled, ~3 of 368
+3 pts above normal
▲ 2 pts in 24 h
35%
Worst hour 7 PM · 33%
10 kt gusts, high ceiling
SEA
Seattle–Tacoma
#10
19%
leave 15+ min late
<1%
cancelled, ~5 of 596
+4 pts above normal
▲ 3 pts in 24 h
35%
Worst hour 7 PM · 24%
10 kt gusts, 1300 ft ceiling
CLT
Charlotte
#11
18%
leave 15+ min late
<1%
cancelled, ~6 of 678
+1 pt above normal
▲ 3 pts in 24 h
35%
Worst hour 7 PM · 31%
6 kt gusts, high ceiling
BOS
Boston Logan
#12
Delay program, avg 74 min (runway construction)
18%
leave 15+ min late
<1%
cancelled, ~4 of 522
+4 pts above normal
▲ 3 pts in 24 h
35%
Worst hour 7 PM · 33%
8 kt gusts, 2200 ft ceiling
PHL
Philadelphia
#13
17%
leave 15+ min late
1%
cancelled, ~4 of 407
+2 pts above normal
▲ 4 pts in 24 h
35%
Worst hour 5 PM · 29%
7 kt gusts, high ceiling
DCA
Washington National
#14
17%
leave 15+ min late
1%
cancelled, ~6 of 569
+2 pts above normal
▲ 3 pts in 24 h
35%
Worst hour 6 PM · 31%
10 kt gusts, high ceiling
LGA
New York LaGuardia
#15
16%
leave 15+ min late
1%
cancelled, ~7 of 536
+3 pts above normal
▲ 3 pts in 24 h
35%
Worst hour 4 PM · 30%
9 kt gusts, 2700 ft ceiling
MSP
Minneapolis–St Paul
#16
Rough weather, no program posted yet
15%
leave 15+ min late
<1%
cancelled, ~4 of 429
+4 pts above normal
▼ 3 pts in 24 h
35%
Worst hour 4 PM · 25%
11 kt gusts, 200 ft ceiling, 0.01 in rain
DTW
Detroit
#17
15%
leave 15+ min late
<1%
cancelled, ~4 of 451
+3 pts above normal
▲ 3 pts in 24 h
35%
Worst hour 6 PM · 24%
15 kt gusts, high ceiling, 0.01 in rain
SLC
Salt Lake City
#18
14%
leave 15+ min late
<1%
cancelled, ~3 of 377
+2 pts above normal
▲ 3 pts in 24 h
35%
Worst hour 2 PM · 27%
17 kt gusts, high ceiling
ATL
Atlanta
#19
13%
leave 15+ min late
<1%
cancelled, ~8 of 1035
+2 pts above normal
▲ 1 pt in 24 h
35%
Worst hour 8 PM · 22%
10 kt gusts, high ceiling
IAD
Washington Dulles
#20
13%
leave 15+ min late
<1%
cancelled, ~2 of 210
+2 pts above normal
▲ 2 pts in 24 h
35%
Worst hour 6 PM · 25%
10 kt gusts, high ceiling
Table view
| # | Airport | FAA status | Late departure | Vs. normal | Cancelled |
|---|---|---|---|---|---|
| 1 | DEN Denver | Normal operations | 39% | +22 pts | 1% |
| 2 | DFW Dallas–Fort Worth | Normal operations | 32% | +12 pts | 4% |
| 3 | ORD Chicago O'Hare | Normal operations | 29% | +14 pts | 3% |
| 4 | SFO San Francisco | Normal operations | 22% | +5 pts | <1% |
| 5 | LAS Las Vegas | Normal operations | 21% | +3 pts | <1% |
| 6 | PHX Phoenix | Normal operations | 21% | +2 pts | <1% |
| 7 | LAX Los Angeles | Normal operations | 20% | +3 pts | <1% |
| 8 | MCO Orlando | Normal operations | 19% | +5 pts | 1% |
| 9 | BWI Baltimore/Washington | Normal operations | 19% | +3 pts | <1% |
| 10 | SEA Seattle–Tacoma | Normal operations | 19% | +4 pts | <1% |
| 11 | CLT Charlotte | Normal operations | 18% | +1 pt | <1% |
| 12 | BOS Boston Logan | Delay program, avg 74 min (runway construction) | 18% | +4 pts | <1% |
| 13 | PHL Philadelphia | Normal operations | 17% | +2 pts | 1% |
| 14 | DCA Washington National | Normal operations | 17% | +2 pts | 1% |
| 15 | LGA New York LaGuardia | Normal operations | 16% | +3 pts | 1% |
| 16 | MSP Minneapolis–St Paul | Rough weather, no program posted yet | 15% | +4 pts | <1% |
| 17 | DTW Detroit | Normal operations | 15% | +3 pts | <1% |
| 18 | SLC Salt Lake City | Normal operations | 14% | +2 pts | <1% |
| 19 | ATL Atlanta | Normal operations | 13% | +2 pts | <1% |
| 20 | IAD Washington Dulles | Normal operations | 13% | +2 pts | <1% |
“Above normal” (the red part of each bar) is how much worse the late-departure chance is than our estimate for the same flights on a normal day — today that’s the weather forecast; live FAA and airport conditions will join it. Every chart uses the same scale. Airports with too little flight data aren’t shown. Schedule: FAA flight plans for 11,521 flights; the other 15,323 (marked “typical”) come from a recent Wednesday’s schedule until the FAA publishes them, usually about a day ahead.