China Southern
flight
CZ 1637:
Philadelphia - San Francisco
Philadelphia - San Francisco
FLIGHT SCHEDULE
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-04-07 through 2026-05-19
Mon
Tue
Wed
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Thu
Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 2797)
Duration: 6:15, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-05-21 through 2026-06-30
Mon
Tue
Wed
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-
Thu
Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 2045)
Duration: 5:59, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
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-
Thu
Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 2045)
Duration: 5:57, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-09-10 through 2026-10-03
Mon
Tue
Wed
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-
Thu
Fri
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-
Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 2045)
Duration: 6:05, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective from 2026-10-05
Mon
Tue
Wed
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-
Thu
Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 3079)
Duration: 6:04, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-03-09 through 2026-04-06
Mon
Tue
Wed
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-
Thu
Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 3079)
Duration: 6:28, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Valid until 2026-01-05
Mon
Tue
Wed
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Thu
Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 3079)
Duration: 6:17, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-01-06 through 2026-02-10
Mon
Tue
Wed
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-
Thu
Fri
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-
Sat
Sun
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-
Codeshare flight, operated by American Airlines.
(AA 3079)
Duration: 6:25, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
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-
Thu
Fri
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-
Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 746)
Duration: 6:31, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
China Southern CZ1637
Effective 2026-08-06 through 2026-09-08
Mon
Tue
Wed
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-
Thu
Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 2045)
Duration: 5:58, non-stop Airbus A321neo (32Q)
- CZ 1637 is a domestic flight departing from the Philadelphia airport (PHL) and arriving at San Francisco airport (SFO).
- The flight distance is 2513 miles, or 4045 km.
- The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-8 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
- For direct flights, the flight time varies between 5:57 and 6:31.