Delta Air Lines MIA to DCA on-time performance
Delta Air Lines nonstop flights from Miami to Washington · Aug 2025 – Jul 2026
On-time arrivals
77%
arrived < 15 min late
Cancelled
1.1%
4 flights
Avg arrival delay
19 min
78 min when late
Rank on route
#2 of 4
route average 75% on time
Key facts
- Delta Air Lines flights on MIA to DCA arrived on time 77% of the time in Aug 2025 – Jul 2026.
- 1.1% were cancelled, and 11% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was late-arriving aircraft (64%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft64%
- Air traffic control & airport congestion20%
- Airline (crew, maintenance, cleaning, fueling)13%
- Extreme weather2%
- Security0%
Other airlines on MIA to DCA
- American Airlines75% on time · 18 min avg delay
- Republic Airways68% on time · 27 min avg delay
- Envoy Air100% on time · 0 min avg delay
Full MIA to DCA comparison →
Delta Air Lines on-time record across all routes →
363 Delta Air Lines flights tracked on this route; 4 cancelled, 0 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.