El Al flight LY 4531: Boston Logan - Ronald Reagan Washington

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Wed 09:15 Boston Logan (BOS) A 11:07 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:52 Effective 2025-07-09 through 2025-09-03
Codeshare flight, operated by Delta Air Lines.(DL 5769)
Wed 09:15 Boston Logan (BOS) A 11:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:55 Effective 2025-09-10 through 2025-09-17
Codeshare flight, operated by Delta Air Lines.(DL 5769)
Wed 09:15 Boston Logan (BOS) A 11:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:55 Effective 2025-10-01 through 2025-10-08
Codeshare flight, operated by Delta Air Lines.(DL 5769)
Mon 09:15 Boston Logan (BOS) A 11:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:55 Operates only on 2025-10-13
Codeshare flight, operated by Delta Air Lines.(DL 5769)
Tue,Wed,Sun 09:15 Boston Logan (BOS) A 11:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:55 Effective 2025-10-22 through 2025-10-28
Codeshare flight, operated by Delta Air Lines.(DL 5769)
Tue,Thu,Sun 09:15 Boston Logan (BOS) A 11:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:55 Effective 2025-10-30 through 2025-12-23
Codeshare flight, operated by Delta Air Lines.(DL 5769)
Sun 09:15 Boston Logan (BOS) A 11:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:55 Operates only on 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 5769)
Tue,Thu,Sun 09:15 Boston Logan (BOS) A 11:09 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:54 Effective from 2026-01-06
Codeshare flight, operated by Delta Air Lines.(DL 5693)
Wed 09:30 Boston Logan (BOS) A 11:12 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:42 Effective 2025-05-07 through 2025-06-04
Codeshare flight, operated by Delta Air Lines.(DL 5693)
Wed 09:40 Boston Logan (BOS) A 11:30 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:50 Effective 2025-06-11 through 2025-07-02
Codeshare flight, operated by Delta Air Lines.(DL 5693)
Tue,Thu,Sun 12:35 Boston Logan (BOS) A 14:29 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:54 Effective 2025-12-25 through 2026-01-01
Codeshare flight, operated by Delta Air Lines.(DL 5674)
Fri 13:05 Boston Logan (BOS) A 14:57 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:52 Operates only on 2025-05-02
Codeshare flight, operated by Delta Air Lines.(DL 5825)
Fri,Sun 15:10 Boston Logan (BOS) A 17:00 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:50 Effective 2025-05-09 through 2025-05-30
Codeshare flight, operated by Delta Air Lines.(DL 5689)
Fri,Sun 15:10 Boston Logan (BOS) A 17:00 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:50 Effective 2025-06-06 through 2025-07-06
Codeshare flight, operated by Delta Air Lines.(DL 5689)
Sun 15:15 Boston Logan (BOS) A 17:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:55 Operates only on 2025-05-04
Codeshare flight, operated by Delta Air Lines.(DL 5689)
Fri,Sun 15:30 Boston Logan (BOS) A 17:26 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:56 Effective 2025-07-11 through 2025-09-07
Codeshare flight, operated by Delta Air Lines.(DL 5689)
Fri,Sun 15:30 Boston Logan (BOS) A 17:27 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:57 Effective 2025-09-12 through 2025-09-28
Codeshare flight, operated by Delta Air Lines.(DL 5689)
Fri,Sun 15:30 Boston Logan (BOS) A 17:27 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:57 Effective 2025-10-05 through 2025-10-24
Codeshare flight, operated by Delta Air Lines.(DL 5689)
Wed 17:10 Boston Logan (BOS) A 19:11 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 2:01 Operates only on 2025-10-15
Codeshare flight, operated by Delta Air Lines.(DL 5816)
Mon,Thu 19:59 Boston Logan (BOS) A 21:53 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:54 Effective 2025-07-07 through 2025-09-18
Codeshare flight, operated by Delta Air Lines.(DL 5811)
Mon,Thu 19:59 Boston Logan (BOS) A 21:53 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:54 Effective 2025-09-25 through 2025-09-29
Codeshare flight, operated by Delta Air Lines.(DL 5811)
Thu 19:59 Boston Logan (BOS) A 21:53 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:54 Effective 2025-10-09 through 2025-10-16
Codeshare flight, operated by Delta Air Lines.(DL 5811)
Mon,Thu 19:59 Boston Logan (BOS) A 21:53 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:54 Effective 2025-10-20 through 2025-10-23
Codeshare flight, operated by Delta Air Lines.(DL 5811)
Mon,Thu 20:15 Boston Logan (BOS) A 22:04 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:49 Valid until 2025-05-05
Codeshare flight, operated by Delta Air Lines.(DL 5666)
Mon,Thu 20:15 Boston Logan (BOS) A 22:01 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:46 Effective 2025-05-08 through 2025-05-29
Codeshare flight, operated by Delta Air Lines.(DL 5666)
Thu 20:15 Boston Logan (BOS) A 22:01 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:46 Operates only on 2025-06-05
Codeshare flight, operated by Delta Air Lines.(DL 5666)
Mon,Thu 20:15 Boston Logan (BOS) A 22:10 Ronald Reagan Washington (DCA) 2
LY 4531 Non-stop Embraer EMB 175 (E75) 1:55 Effective 2025-06-09 through 2025-07-03
Codeshare flight, operated by Delta Air Lines.(DL 5811)
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El Al flight LY 4531:
Boston Logan - Ronald Reagan Washington
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
El Al LY4531
09:15
Boston Logan (BOS) A

11:07
Ronald Reagan Washington (DCA) 2
Effective 2025-07-09 through 2025-09-03
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5769)
Duration: 1:52, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:15
Boston Logan (BOS) A

11:10
Ronald Reagan Washington (DCA) 2
Effective 2025-09-10 through 2025-09-17
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5769)
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:15
Boston Logan (BOS) A

11:10
Ronald Reagan Washington (DCA) 2
Effective 2025-10-01 through 2025-10-08
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5769)
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:15
Boston Logan (BOS) A

11:10
Ronald Reagan Washington (DCA) 2
Operates only on 2025-10-13
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5769)
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:15
Boston Logan (BOS) A

11:10
Ronald Reagan Washington (DCA) 2
Effective 2025-10-22 through 2025-10-28
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5769)
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:15
Boston Logan (BOS) A

11:10
Ronald Reagan Washington (DCA) 2
Effective 2025-10-30 through 2025-12-23
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5769)
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:15
Boston Logan (BOS) A

11:10
Ronald Reagan Washington (DCA) 2
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5769)
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:15
Boston Logan (BOS) A

11:09
Ronald Reagan Washington (DCA) 2
Effective from 2026-01-06
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5693)
Duration: 1:54, non-stop
Embraer EMB 175 (E75)
El Al LY4531
09:30
Boston Logan (BOS) A

11:12
Ronald Reagan Washington (DCA) 2
Effective 2025-05-07 through 2025-06-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5693)
Duration: 1:42, non-stop
Embraer EMB 170 / EMB 175 (E70)
El Al LY4531
09:40
Boston Logan (BOS) A

11:30
Ronald Reagan Washington (DCA) 2
Effective 2025-06-11 through 2025-07-02
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5693)
Duration: 1:50, non-stop
Embraer EMB 170 / EMB 175 (E70)
El Al LY4531
12:35
Boston Logan (BOS) A

14:29
Ronald Reagan Washington (DCA) 2
Effective 2025-12-25 through 2026-01-01
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5674)
Duration: 1:54, non-stop
Embraer EMB 175 (E75)
El Al LY4531
13:05
Boston Logan (BOS) A

14:57
Ronald Reagan Washington (DCA) 2
Operates only on 2025-05-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5825)
Duration: 1:52, non-stop
Embraer EMB 170 / EMB 175 (E70)
El Al LY4531
15:10
Boston Logan (BOS) A

17:00
Ronald Reagan Washington (DCA) 2
Effective 2025-05-09 through 2025-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5689)
Duration: 1:50, non-stop
Embraer EMB 175 (E75)
El Al LY4531
15:10
Boston Logan (BOS) A

17:00
Ronald Reagan Washington (DCA) 2
Effective 2025-06-06 through 2025-07-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5689)
Duration: 1:50, non-stop
Embraer EMB 175 (E75)
El Al LY4531
15:15
Boston Logan (BOS) A

17:10
Ronald Reagan Washington (DCA) 2
Operates only on 2025-05-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5689)
Duration: 1:55, non-stop
Embraer EMB 170 / EMB 175 (E70)
El Al LY4531
15:30
Boston Logan (BOS) A

17:26
Ronald Reagan Washington (DCA) 2
Effective 2025-07-11 through 2025-09-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5689)
Duration: 1:56, non-stop
Embraer EMB 175 (E75)
El Al LY4531
15:30
Boston Logan (BOS) A

17:27
Ronald Reagan Washington (DCA) 2
Effective 2025-09-12 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5689)
Duration: 1:57, non-stop
Embraer EMB 175 (E75)
El Al LY4531
15:30
Boston Logan (BOS) A

17:27
Ronald Reagan Washington (DCA) 2
Effective 2025-10-05 through 2025-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 5689)
Duration: 1:57, non-stop
Embraer EMB 175 (E75)
El Al LY4531
17:10
Boston Logan (BOS) A

19:11
Ronald Reagan Washington (DCA) 2
Operates only on 2025-10-15
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5816)
Duration: 2:01, non-stop
Embraer EMB 175 (E75)
El Al LY4531
19:59
Boston Logan (BOS) A

21:53
Ronald Reagan Washington (DCA) 2
Effective 2025-07-07 through 2025-09-18
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5811)
Duration: 1:54, non-stop
Embraer EMB 175 (E75)
El Al LY4531
19:59
Boston Logan (BOS) A

21:53
Ronald Reagan Washington (DCA) 2
Effective 2025-09-25 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5811)
Duration: 1:54, non-stop
Embraer EMB 175 (E75)
El Al LY4531
19:59
Boston Logan (BOS) A

21:53
Ronald Reagan Washington (DCA) 2
Effective 2025-10-09 through 2025-10-16
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5811)
Duration: 1:54, non-stop
Embraer EMB 175 (E75)
El Al LY4531
19:59
Boston Logan (BOS) A

21:53
Ronald Reagan Washington (DCA) 2
Effective 2025-10-20 through 2025-10-23
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5811)
Duration: 1:54, non-stop
Embraer EMB 175 (E75)
El Al LY4531
20:15
Boston Logan (BOS) A

22:04
Ronald Reagan Washington (DCA) 2
Valid until 2025-05-05
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5666)
Duration: 1:49, non-stop
Embraer EMB 175 (E75)
El Al LY4531
20:15
Boston Logan (BOS) A

22:01
Ronald Reagan Washington (DCA) 2
Effective 2025-05-08 through 2025-05-29
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5666)
Duration: 1:46, non-stop
Embraer EMB 175 (E75)
El Al LY4531
20:15
Boston Logan (BOS) A

22:01
Ronald Reagan Washington (DCA) 2
Operates only on 2025-06-05
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5666)
Duration: 1:46, non-stop
Embraer EMB 175 (E75)
El Al LY4531
20:15
Boston Logan (BOS) A

22:10
Ronald Reagan Washington (DCA) 2
Effective 2025-06-09 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5811)
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
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Parallax here BOS-DCA
  • LY 4531 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 1:42 and 2:01.
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