ON TIMEBOARD

DL 5687 on time

Delta Air Lines 5687: Washington to Boston at 8:29 a.m.; Boston to Washington at 6:05 a.m. (past 12 months). Figures below the title are for DCA → BOS, its busiest leg

On time
86%
279 flights · likely 81–90%
Cancelled
0.7%
of scheduled flights
Typical arrival
−12 min
median vs schedule
When late
+69 min
average delay
Similar flights
84%
DL, same route & hour

About 1 in 7 DL 5687 flights from Washington arrived 15+ minutes late, diverted or cancelled over the past year (14%); 0.7% were cancelled. The typical flight landed 12 minutes early.

DL 5687: DCA → BOS

Scheduled to leave Washington at 8:29 a.m. local time, operated by Republic Airways as YX 5687. Over the past year it arrived on time 86% of the time (279 flights), in line with other DL flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Aug 2025: 96% on time (26 flights)96AugSep 2025: 81% on time (26 flights)81SepOct 2025: 70% on time (27 flights)70OctNov 2025: 100% on time (23 flights)100NovDec 2025: 86% on time (29 flights)86DecJan 2026: too few flights (4 flights)JanMar 2026: 92% on time (24 flights)92MarApr 2026: 90% on time (30 flights)90AprMay 2026: 94% on time (31 flights)94MayJun 2026: 85% on time (27 flights)85JunJul 2026: 79% on time (28 flights)79JulAug 2026: 87% on time (30 flights)87Aug

By day of week

DayFlightsOn time
Monday4489%
Tuesday4391%
Wednesday4386%
Thursday4283%
Friday4286%
Saturday2286%
Sunday4381%

Why it was late

Airline (crew, maintenance, ops) 64%Air traffic & airport (NAS) 23%Late inbound plane 11%Severe weather 2%

All flights DCA → BOS · Connecting off DL 5687? Check the risk

DL 5687: BOS → DCA

Scheduled to leave Boston at 6:05 a.m. local time, operated by Republic Airways as YX 5687. Over the past year it arrived on time 85% of the time (171 flights), worse than other DL flights on the route at that hour (90%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Feb 2025: 70% on time (20 flights)70FebMar 2025: too few flights (5 flights)MarMay 2025: 89% on time (18 flights)89MayJun 2025: too few flights (5 flights)JunJan 2026: 85% on time (20 flights)85JanFeb 2026: 70% on time (20 flights)70FebMar 2026: 86% on time (22 flights)86MarApr 2026: 86% on time (22 flights)86AprMay 2026: 95% on time (21 flights)95MayJun 2026: 91% on time (22 flights)91JunJul 2026: 83% on time (23 flights)83JulAug 2026: 86% on time (21 flights)86Aug

By day of week

DayFlightsOn time
Monday3583%
Tuesday3482%
Wednesday3491%
Thursday3485%
Friday3485%

Why it was late

Airline (crew, maintenance, ops) 70%Air traffic & airport (NAS) 28%Severe weather 1%

All flights BOS → DCA · Connecting off DL 5687? Check the risk

Questions

How often is DL 5687 from DCA to BOS late?

Delta Air Lines 5687 from Washington, DC to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 14% of 279 scheduled flights between September 2025 and August 2026. 0.7% were cancelled.

How often is DL 5687 from BOS to DCA late?

Delta Air Lines 5687 from Boston, MA to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 15% of 171 scheduled flights between September 2025 and August 2026. 5.3% 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.