HOU → DCA Southwest Airlines

Southwest Airlines · Houston, TX to Washington, DC · 1,056 flights, 2025-07-01 to 2026-06-30 · aggregated across 49 flight numbers

This route runs much more reliably at some times of day than others — 100% on-time departing 3–6am vs. 56% departing 6–9pm.
On-time arrival
72%
Median delay
+1 min
90th percentile
+51 min
Cancellation rate
1%

How on-time is Southwest Airlines from HOU to DCA?

Across every Southwest Airlines flight number on HOU → DCA (1,056 flights, 2025-07-01 to 2026-06-30), 72% arrived within 15 minutes of schedule. Median arrival delay +1 min; the worst 10% ran +51 min or later. 1% were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time74172%
16-30 min10310%
31-60 min11711%
61-120 min485%
2+ hrs263%

Performance by month

MonthFlightsOn-timeAvg delay
2025-079073%+14 min
2025-088874%+10 min
2025-098578%+7 min
2025-108555%+28 min
2025-118280%+11 min
2025-129179%+3 min
2026-018580%+1 min
2026-027876%+8 min
2026-038858%+21 min
2026-048772%+11 min
2026-058770%+13 min
2026-068964%+15 min

Performance by day of week

DayFlightsOn-time
Mon15469%
Tue15779%
Wed15568%
Thu15371%
Fri15269%
Sat11778%
Sun14769%

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…