Southwest Airlines
Is WN4639 delayed?
No — WN4639 landed in Houston on schedule (1 min behind), at 21:42 on Sep 27 (as of Sep 28, 02:42 UTC). Over its last 6 recorded arrivals, 3 landed more than 15 min late.
On schedule (1 min behind)
Official source · Updated
Departure
Washington
DCA
Actual
Scheduled 19:53
Sep 27
Arrival
Houston
HOU
Actual
Scheduled 21:41
Sep 27
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- On schedule (1 min behind)
Washington → Houston
- On schedule (3 min behind)
Kansas City → Portland
- 80 min late
Washington → Houston
- 182 min late
Kansas City → Portland
- 30 min early
Washington → Houston
Is WN4639 usually late?
Observation window: Sep 2, 2026 – Oct 2, 2026
Percentages and delay figures appear once 10 arrivals are recorded.
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
At the airports today
Washington (DCA) departures
- Left more than 15 min late
- 1 of 1
- Cancelled today
- 0
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 27, 2026Arrived | Washington | Houston | 1 | |
| Sep 26, 2026Arrived | Kansas City | Portland | 3 | |
| Sep 20, 2026Arrived | Washington | Houston | 80 | |
| Sep 19, 2026Arrived | Kansas City | Portland | 182 | |
| Sep 6, 2026Arrived | Washington | Houston | -30 | |
| Sep 5, 2026Arrived | Kansas City | Portland | 23 |
Email me if WN4639 runs late
We email you if your next WN4639 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.