United Airlines flight UA 2661: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 06:10 Philadelphia (PHL) D 09:28 San Francisco (SFO) 3
UA 2661 Non-stop Boeing 737 MAX 8 (7M8) 6:18 Effective 2026-03-29 through 2026-04-29
Daily 06:10 Philadelphia (PHL) D 09:28 San Francisco (SFO) 3
UA 2661 Non-stop Boeing 737 MAX 8 (7M8) 6:18 Effective from 2026-05-21
Daily 06:12 Philadelphia (PHL) D 09:30 San Francisco (SFO) 3
UA 2661 Non-stop Boeing 737 MAX 8 (7M8) 6:18 Effective 2026-04-30 through 2026-05-20
Daily 10:00 Chicago O'Hare (ORD) 1 13:18 New York LaGuardia (LGA) B
UA 2661 Non-stop Boeing 737-800 (738) 2:18 Valid until 2026-01-05
Daily 10:50 San Francisco (SFO) 3 12:18 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Airbus A319 (319) 1:28 Effective 2026-03-05 through 2026-03-28
Daily 10:50 San Francisco (SFO) 3 12:20 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-03-29 through 2026-04-29
Daily 10:50 San Francisco (SFO) 3 12:20 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737 MAX 9 (7M9) 1:30 Effective from 2026-05-21
Daily 10:52 San Francisco (SFO) 3 12:22 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737 MAX 9 (7M9) 1:30 Effective 2026-04-30 through 2026-05-20
Mon,Thu,Fri,Sun 11:10 San Francisco (SFO) 3 12:38 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737 MAX 9 (7M9) 1:28 Effective 2026-02-12 through 2026-03-02
Tue 11:10 San Francisco (SFO) 3 12:38 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737-800 (738) 1:28 Effective 2026-02-24 through 2026-03-03
Sat 11:20 San Francisco (SFO) 3 12:47 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737 MAX 9 (7M9) 1:27 Effective 2026-02-14 through 2026-02-28
Tue,Wed 11:20 San Francisco (SFO) 3 12:48 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737 MAX 8 (7M8) 1:28 Effective 2026-02-17 through 2026-02-18
Wed 11:20 San Francisco (SFO) 3 12:48 Ontario, Los Angeles (ONT) 2
UA 2661 Non-stop Boeing 737 MAX 8 (7M8) 1:28 Effective 2026-02-25 through 2026-03-04
Thu 23:00 San Jose (SJC) A 07:31 Newark Liberty, New York (EWR) C
UA 2661 Non-stop Boeing 737 MAX 9 (7M9) 5:31 Operates only on 2026-02-05
The flight arrives 1 day after departure.
Non-Direct Flights:
Daily 06:10 Philadelphia (PHL) D 12:20 Ontario, Los Angeles (ONT) 2
UA 2661 1-stop Boeing 737 MAX 8 (7M8) 9:10 Effective 2026-03-29 through 2026-04-29
Daily 06:10 Philadelphia (PHL) D 12:20 Ontario, Los Angeles (ONT) 2
UA 2661 1-stop Boeing 737 MAX 8 (7M8) 9:10 Effective from 2026-05-21
Daily 06:12 Philadelphia (PHL) D 12:22 Ontario, Los Angeles (ONT) 2
UA 2661 1-stop Boeing 737 MAX 8 (7M8) 9:10 Effective 2026-04-30 through 2026-05-20
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This flight number is listed as serving the following routes:


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United Airlines flight UA 2661: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA2661
06:10
Philadelphia (PHL) D

09:28
San Francisco (SFO) 3
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:18, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA2661
06:10
Philadelphia (PHL) D

09:28
San Francisco (SFO) 3
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:18, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA2661
06:12
Philadelphia (PHL) D

09:30
San Francisco (SFO) 3
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:18, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA2661
10:00
Chicago O'Hare (ORD) 1

13:18
New York LaGuardia (LGA) B
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:18, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA2661
10:50
San Francisco (SFO) 3

12:18
Ontario, Los Angeles (ONT) 2
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA2661
10:50
San Francisco (SFO) 3

12:20
Ontario, Los Angeles (ONT) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA2661
10:50
San Francisco (SFO) 3

12:20
Ontario, Los Angeles (ONT) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA2661
10:52
San Francisco (SFO) 3

12:22
Ontario, Los Angeles (ONT) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA2661
11:10
San Francisco (SFO) 3

12:38
Ontario, Los Angeles (ONT) 2
Effective 2026-02-12 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:28, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA2661
11:10
San Francisco (SFO) 3

12:38
Ontario, Los Angeles (ONT) 2
Effective 2026-02-24 through 2026-03-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:28, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA2661
11:20
San Francisco (SFO) 3

12:47
Ontario, Los Angeles (ONT) 2
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:27, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA2661
11:20
San Francisco (SFO) 3

12:48
Ontario, Los Angeles (ONT) 2
Effective 2026-02-17 through 2026-02-18
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:28, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA2661
11:20
San Francisco (SFO) 3

12:48
Ontario, Los Angeles (ONT) 2
Effective 2026-02-25 through 2026-03-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:28, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA2661
23:00
San Jose (SJC) A

07:31(+1)
Newark Liberty, New York (EWR) C
Operates only on 2026-02-05
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 5:31, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA2661
06:10
Philadelphia (PHL) D

12:20
Ontario, Los Angeles (ONT) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:10, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
United Airlines UA2661
06:10
Philadelphia (PHL) D

12:20
Ontario, Los Angeles (ONT) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:10, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
United Airlines UA2661
06:12
Philadelphia (PHL) D

12:22
Ontario, Los Angeles (ONT) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:10, 1-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - New York LaGuardia (LGA)
  • Philadelphia (PHL) - Ontario, Los Angeles (ONT)
  • Philadelphia (PHL) - San Francisco (SFO)
  • San Francisco (SFO) - Ontario, Los Angeles (ONT)
  • San Jose (SJC) - Newark Liberty, New York (EWR)
All United Airlines flights
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