ON TIMEBOARD
Delta Air Lines / ATL → IAD

DL 1444 on time

Delta Air Lines 1444: Atlanta to Washington at 10:00 a.m.; Washington to Atlanta at 12:37 p.m. (past 12 months). Figures below the title are for ATL → IAD, its busiest leg

On time
84%
251 flights · likely 79–88%
Cancelled
3.6%
of scheduled flights
Typical arrival
−6 min
median vs schedule
When late
+66 min
average delay
Similar flights
82%
DL, same route & hour

About 1 in 6 DL 1444 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (16%); 3.6% were cancelled. The typical flight landed 6 minutes early.

DL 1444: ATL → IAD

Scheduled to leave Atlanta at 10:00 a.m. local time. Over the past year it arrived on time 84% of the time (251 flights), in line with other DL flights on the route at that hour (82%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 90% on time (30 flights)90AprMay 2025: 77% on time (31 flights)77MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 84% on time (31 flights)84JanFeb 2026: 86% on time (28 flights)86FebMar 2026: 77% on time (31 flights)77MarApr 2026: 87% on time (30 flights)87AprMay 2026: 81% on time (31 flights)81MayJun 2026: 87% on time (30 flights)87JunJul 2026: 84% on time (31 flights)84JulAug 2026: 85% on time (27 flights)85Aug

By day of week

DayFlightsOn time
Monday3781%
Tuesday3692%
Wednesday3694%
Thursday3692%
Friday3689%
Saturday3373%
Sunday3770%

Why it was late

Airline (crew, maintenance, ops) 80%Air traffic & airport (NAS) 13%Severe weather 4%Late inbound plane 3%

All flights ATL → IAD · Connecting off DL 1444? Check the risk

DL 1444: IAD → ATL

Scheduled to leave Washington at 12:37 p.m. local time. Over the past year it arrived on time 76% of the time (251 flights), in line with other DL flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 97% on time (30 flights)97AprMay 2025: 71% on time (31 flights)71MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 84% on time (31 flights)84JanFeb 2026: 79% on time (28 flights)79FebMar 2026: 77% on time (31 flights)77MarApr 2026: 87% on time (30 flights)87AprMay 2026: 71% on time (31 flights)71MayJun 2026: 80% on time (30 flights)80JunJul 2026: 58% on time (31 flights)58JulAug 2026: 67% on time (27 flights)67Aug

By day of week

DayFlightsOn time
Monday3773%
Tuesday3681%
Wednesday3689%
Thursday3681%
Friday3681%
Saturday3367%
Sunday3765%

Why it was late

Airline (crew, maintenance, ops) 42%Late inbound plane 39%Air traffic & airport (NAS) 20%

All flights IAD → ATL · Connecting off DL 1444? Check the risk

Questions

How often is DL 1444 from ATL to IAD late?

Delta Air Lines 1444 from Atlanta, GA to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 16% of 251 scheduled flights between September 2025 and August 2026. 3.6% were cancelled.

How often is DL 1444 from IAD to ATL late?

Delta Air Lines 1444 from Washington, DC to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 24% of 251 scheduled flights between September 2025 and August 2026. 3.2% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.