Delta Air Lines flight DL 5666: Boston Logan - Ronald Reagan Washington

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Tue,Fri 18:30 Boston Logan (BOS) A 20:30 Ronald Reagan Washington (DCA) 2
DL 5666 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:00 Valid until 2026-01-02
Sun 19:59 Boston Logan (BOS) A 22:00 Ronald Reagan Washington (DCA) 2
DL 5666 Non-stop Embraer EMB 175 (E75) 2:01 Operates only on 2026-01-04
Mon-Fri,Sun 19:59 Boston Logan (BOS) A 21:50 Ronald Reagan Washington (DCA) 2
DL 5666 Non-stop Embraer EMB 175 (E75) 1:51 Effective 2026-04-13 through 2026-10-05
Mon-Fri,Sun 19:59 Boston Logan (BOS) A 21:55 Ronald Reagan Washington (DCA) 2
DL 5666 Non-stop Embraer EMB 175 (E75) 1:56 Effective from 2026-10-06
Sat 20:05 Boston Logan (BOS) A 22:02 Ronald Reagan Washington (DCA) 2
DL 5666 Non-stop Embraer EMB 175 (E75) 1:57 Operates only on 2026-01-03
Mon-Fri,Sun 20:15 Boston Logan (BOS) A 22:11 Ronald Reagan Washington (DCA) 2
DL 5666 Non-stop Embraer EMB 175 (E75) 1:56 Effective 2026-01-05 through 2026-02-11
Mon-Fri,Sun 20:15 Boston Logan (BOS) A 22:08 Ronald Reagan Washington (DCA) 2
DL 5666 Non-stop Embraer EMB 175 (E75) 1:53 Effective 2026-02-12 through 2026-04-12


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Delta Air Lines flight DL 5666:
Boston Logan - Ronald Reagan Washington
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL5666
18:30
Boston Logan (BOS) A

20:30
Ronald Reagan Washington (DCA) 2
Valid until 2026-01-02
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
Delta Air Lines DL5666
19:59
Boston Logan (BOS) A

22:00
Ronald Reagan Washington (DCA) 2
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:01, non-stop
Embraer EMB 175 (E75)
Direct Flights:
Delta Air Lines DL5666
19:59
Boston Logan (BOS) A

21:50
Ronald Reagan Washington (DCA) 2
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:51, non-stop
Embraer EMB 175 (E75)
Direct Flights:
Delta Air Lines DL5666
19:59
Boston Logan (BOS) A

21:55
Ronald Reagan Washington (DCA) 2
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:56, non-stop
Embraer EMB 175 (E75)
Direct Flights:
Delta Air Lines DL5666
20:05
Boston Logan (BOS) A

22:02
Ronald Reagan Washington (DCA) 2
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:57, non-stop
Embraer EMB 175 (E75)
Direct Flights:
Delta Air Lines DL5666
20:15
Boston Logan (BOS) A

22:11
Ronald Reagan Washington (DCA) 2
Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:56, non-stop
Embraer EMB 175 (E75)
Direct Flights:
Delta Air Lines DL5666
20:15
Boston Logan (BOS) A

22:08
Ronald Reagan Washington (DCA) 2
Effective 2026-02-12 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:53, non-stop
Embraer EMB 175 (E75)
  • DL 5666 is a domestic flight departing from the Boston Logan airport (BOS) and arriving at Ronald Reagan Washington airport (DCA).
  • The flight distance is 398 miles, or 641 km.
  • The timezone of both the departure and the arrival airports is UTC-5 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 1:51 and 2:01.
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