Southwest Airlines DCA to LAS on-time performance
Southwest Airlines nonstop flights from Washington to Las Vegas · Aug 2025 – Jul 2026
On-time arrivals
52%
arrived < 15 min late
Cancelled
1.1%
4 flights
Avg arrival delay
29 min
57 min when late
Rank on route
#2 of 2
route average 70% on time
Key facts
- Southwest Airlines flights on DCA to LAS arrived on time 52% of the time in Aug 2025 – Jul 2026.
- 1.1% were cancelled, and 16% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 70% on time overall.
- The largest source of delay minutes was late-arriving aircraft (40%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft40%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion23%
- Extreme weather3%
- Security1%
Other airlines on DCA to LAS
- American Airlines88% on time · 8 min avg delay
Full DCA to LAS comparison →
Southwest Airlines on-time record across all routes →
365 Southwest Airlines flights tracked on this route; 4 cancelled, 2 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.