United Airlines flight UA 660: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Sat,Sun 06:05 Baltimore (BWI) 07:28 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737 MAX 9 (7M9) 2:23 Effective 2026-03-07 through 2026-03-28
Daily 06:10 Philadelphia (PHL) D 07:31 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737-800 (738) 2:21 Effective from 2026-05-21
Daily 06:15 Philadelphia (PHL) D 07:43 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737 MAX 8 (7M8) 2:28 Effective 2026-03-29 through 2026-04-29
Daily 06:17 Philadelphia (PHL) D 07:45 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737 MAX 8 (7M8) 2:28 Effective 2026-04-30 through 2026-05-20
Mon,Thu,Fri 06:20 Baltimore (BWI) 07:43 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737 MAX 9 (7M9) 2:23 Effective 2026-03-05 through 2026-03-27
Tue 06:30 Philadelphia (PHL) D 07:58 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737-800 (738) 2:28 Operates only on 2026-01-06
Mon-Wed,Fri-Sun 06:30 Philadelphia (PHL) D 07:59 Chicago O'Hare (ORD) 1
UA 660 Non-stop Airbus A320 (320) 2:29 Effective 2026-01-07 through 2026-02-03
Thu 06:30 Philadelphia (PHL) D 07:58 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737-700 (73G) 2:28 Operates only on 2026-01-08
Thu 06:30 Philadelphia (PHL) D 07:58 Chicago O'Hare (ORD) 1
UA 660 Non-stop Boeing 737 MAX 9 (7M9) 2:28 Effective 2026-01-15 through 2026-02-05
Mon-Wed,Fri-Sun 06:30 Philadelphia (PHL) D 07:59 Chicago O'Hare (ORD) 1
UA 660 Non-stop Airbus A320 (320) 2:29 Effective 2026-02-06 through 2026-02-11
Daily 08:46 Chicago O'Hare (ORD) 1 11:25 San Diego (SAN) 2
UA 660 Non-stop Airbus A321neo (32Q) 4:39 Effective 2026-03-29 through 2026-05-20
Daily 08:47 Chicago O'Hare (ORD) 1 11:38 San Diego (SAN) 2
UA 660 Non-stop Airbus A321neo (32Q) 4:51 Effective 2026-02-12 through 2026-03-28
Daily 08:56 Chicago O'Hare (ORD) 1 11:30 San Diego (SAN) 2
UA 660 Non-stop Airbus A321neo (32Q) 4:34 Valid until 2026-01-05
Daily 09:00 Chicago O'Hare (ORD) 1 11:22 San Diego (SAN) 2
UA 660 Non-stop Airbus A321neo (32Q) 4:22 Effective from 2026-05-21
Daily 09:05 Chicago O'Hare (ORD) 1 11:48 San Diego (SAN) 2
UA 660 Non-stop Airbus A321neo (32Q) 4:43 Effective 2026-01-06 through 2026-02-11
Non-Direct Flights:
Sat,Sun 06:05 Baltimore (BWI) 11:38 San Diego (SAN) 2
UA 660 1-stop Boeing 737 MAX 9 (7M9) 8:33 Effective 2026-03-07 through 2026-03-28
Daily 06:10 Philadelphia (PHL) D 11:22 San Diego (SAN) 2
UA 660 1-stop Boeing 737-800 (738) 8:12 Effective from 2026-05-21
Daily 06:15 Philadelphia (PHL) D 11:25 San Diego (SAN) 2
UA 660 1-stop Boeing 737 MAX 8 (7M8) 8:10 Effective 2026-03-29 through 2026-04-29
Daily 06:17 Philadelphia (PHL) D 11:25 San Diego (SAN) 2
UA 660 1-stop Boeing 737 MAX 8 (7M8) 8:08 Effective 2026-04-30 through 2026-05-20
Mon,Thu,Fri 06:20 Baltimore (BWI) 11:38 San Diego (SAN) 2
UA 660 1-stop Boeing 737 MAX 9 (7M9) 8:18 Effective 2026-03-05 through 2026-03-27
Tue 06:30 Philadelphia (PHL) D 11:48 San Diego (SAN) 2
UA 660 1-stop Boeing 737-800 (738) 8:18 Operates only on 2026-01-06
Mon-Wed,Fri-Sun 06:30 Philadelphia (PHL) D 11:48 San Diego (SAN) 2
UA 660 1-stop Airbus A320 (320) 8:18 Effective 2026-01-07 through 2026-02-03
Thu 06:30 Philadelphia (PHL) D 11:48 San Diego (SAN) 2
UA 660 1-stop Boeing 737-700 (73G) 8:18 Operates only on 2026-01-08
Thu 06:30 Philadelphia (PHL) D 11:48 San Diego (SAN) 2
UA 660 1-stop Boeing 737 MAX 9 (7M9) 8:18 Effective 2026-01-15 through 2026-02-05
Mon-Wed,Fri-Sun 06:30 Philadelphia (PHL) D 11:48 San Diego (SAN) 2
UA 660 1-stop Airbus A320 (320) 8:18 Effective 2026-02-06 through 2026-02-11
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This flight number is listed as serving the following routes:


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United Airlines flight UA 660: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA660
06:05
Baltimore (BWI)

07:28
Chicago O'Hare (ORD) 1
Effective 2026-03-07 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 2:23, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA660
06:10
Philadelphia (PHL) D

07:31
Chicago O'Hare (ORD) 1
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:21, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA660
06:15
Philadelphia (PHL) D

07:43
Chicago O'Hare (ORD) 1
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:28, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA660
06:17
Philadelphia (PHL) D

07:45
Chicago O'Hare (ORD) 1
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:28, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA660
06:20
Baltimore (BWI)

07:43
Chicago O'Hare (ORD) 1
Effective 2026-03-05 through 2026-03-27
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:23, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

07:58
Chicago O'Hare (ORD) 1
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:28, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

07:59
Chicago O'Hare (ORD) 1
Effective 2026-01-07 through 2026-02-03
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 2:29, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

07:58
Chicago O'Hare (ORD) 1
Operates only on 2026-01-08
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:28, non-stop
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

07:58
Chicago O'Hare (ORD) 1
Effective 2026-01-15 through 2026-02-05
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:28, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

07:59
Chicago O'Hare (ORD) 1
Effective 2026-02-06 through 2026-02-11
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 2:29, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA660
08:46
Chicago O'Hare (ORD) 1

11:25
San Diego (SAN) 2
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:39, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA660
08:47
Chicago O'Hare (ORD) 1

11:38
San Diego (SAN) 2
Effective 2026-02-12 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:51, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA660
08:56
Chicago O'Hare (ORD) 1

11:30
San Diego (SAN) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:34, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA660
09:00
Chicago O'Hare (ORD) 1

11:22
San Diego (SAN) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:22, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA660
09:05
Chicago O'Hare (ORD) 1

11:48
San Diego (SAN) 2
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:43, non-stop
Airbus A321neo (32Q)
Non-Direct Flights:
United Airlines UA660
06:05
Baltimore (BWI)

11:38
San Diego (SAN) 2
Effective 2026-03-07 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 8:33, 1-stop
Boeing 737 MAX 9 (7M9)
Non-Direct Flights:
United Airlines UA660
06:10
Philadelphia (PHL) D

11:22
San Diego (SAN) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:12, 1-stop
Boeing 737-800 (738)
Non-Direct Flights:
United Airlines UA660
06:15
Philadelphia (PHL) D

11:25
San Diego (SAN) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:10, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
United Airlines UA660
06:17
Philadelphia (PHL) D

11:25
San Diego (SAN) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:08, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
United Airlines UA660
06:20
Baltimore (BWI)

11:38
San Diego (SAN) 2
Effective 2026-03-05 through 2026-03-27
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 8:18, 1-stop
Boeing 737 MAX 9 (7M9)
Non-Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

11:48
San Diego (SAN) 2
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 8:18, 1-stop
Boeing 737-800 (738)
Non-Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

11:48
San Diego (SAN) 2
Effective 2026-01-07 through 2026-02-03
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 8:18, 1-stop
Airbus A320 (320)
Non-Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

11:48
San Diego (SAN) 2
Operates only on 2026-01-08
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 8:18, 1-stop
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

11:48
San Diego (SAN) 2
Effective 2026-01-15 through 2026-02-05
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 8:18, 1-stop
Boeing 737 MAX 9 (7M9)
Non-Direct Flights:
United Airlines UA660
06:30
Philadelphia (PHL) D

11:48
San Diego (SAN) 2
Effective 2026-02-06 through 2026-02-11
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 8:18, 1-stop
Airbus A320 (320)
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Parallax here -
This flight number is listed as serving the following routes:
  • Baltimore (BWI) - Chicago O'Hare (ORD)
  • Baltimore (BWI) - San Diego (SAN)
  • Chicago O'Hare (ORD) - San Diego (SAN)
  • Philadelphia (PHL) - Chicago O'Hare (ORD)
  • Philadelphia (PHL) - San Diego (SAN)
All United Airlines flights
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