Southwest Airlines
Is WN4129 delayed?
Service date: · Scheduled departure date (America/New_York)
Arrived
12 min early
Official source · Updated
Departure
Washington
DCA
Actual
Scheduled 13:00
Aug 25
Arrival
Chicago
MDW
Actual
Scheduled 18:55
Aug 25
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
DCAMDW
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 9 min early
DCA → MDW
- 54 min late
DCA → MDW
- 9 min early
DCA → MDW
- 13 min early
DCA → MDW
- 9 min early
DCA → MDW
Flight history and details
Aug 22, 2026 — Sep 21, 2026
- Observed arrivals
- 6
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 0
- Observed occurrences
- 6
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 16, 2026Arrived | Washington | Chicago | -9 | |
| Sep 15, 2026Arrived | Washington | Chicago | 54 | |
| Sep 9, 2026Arrived | Washington | Chicago | -9 | |
| Sep 8, 2026Arrived | Washington | Chicago | -13 | |
| Aug 26, 2026Arrived | Washington | Chicago | -9 | |
| Aug 25, 2026Arrived | Washington | Chicago | -12 |