United Airlines
flight
UA 399:
Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA399
Valid until 2026-01-03
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Duration: 2:17, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA399
Operates only on 2026-01-06
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Duration: 2:24, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA399
Effective 2026-01-10 through 2026-02-10
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Duration: 2:25, non-stop
Airbus A321neo (32Q)
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA399
Effective 2026-01-07 through 2026-02-11
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Duration: 2:25, non-stop
Airbus A321neo (32Q)
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA399
Effective 2026-01-08 through 2026-02-09
Mon
Tue
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Wed
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Fri
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Duration: 2:24, non-stop
Boeing 737-800 (738)
Boeing 737-800 (738)
Direct Flights:
United Airlines UA399
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
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Sun
Duration: 2:24, non-stop
Boeing 737-800 (738)
Boeing 737-800 (738)
Direct Flights:
United Airlines UA399
Effective 2026-05-22 through 2026-09-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:25, non-stop
Boeing 757-200 (752)
Boeing 757-200 (752)
Direct Flights:
United Airlines UA399
Operates only on 2026-02-13
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Sat
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Duration: 2:43, non-stop
Boeing 737-800 (738)
Boeing 737-800 (738)
Direct Flights:
United Airlines UA399
Effective 2026-02-15 through 2026-03-04
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Duration: 2:43, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA399
Effective 2026-02-12 through 2026-02-19
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Duration: 2:43, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA399
Operates only on 2026-02-16
Mon
Tue
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Fri
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Sat
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Duration: 2:43, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA399
Effective 2026-02-17 through 2026-03-03
Mon
Tue
Wed
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Thu
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Fri
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Sat
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Duration: 2:43, non-stop
Boeing 737-800 (738)
Boeing 737-800 (738)
Direct Flights:
United Airlines UA399
Effective 2026-02-20 through 2026-02-27
Mon
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Fri
Sat
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Duration: 2:43, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA399
Effective 2026-02-14 through 2026-02-28
Mon
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Thu
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Fri
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Sat
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Duration: 2:47, non-stop
Airbus A320 (320)
Airbus A320 (320)
Direct Flights:
United Airlines UA399
Operates only on 2026-03-05
Mon
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Wed
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Sat
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Sun
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Duration: 3:15, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA399
Effective 2026-03-06 through 2026-03-13
Mon
Tue
Wed
Thu
Fri
Sat
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Sun
Duration: 3:15, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA399
Effective 2026-03-14 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:15, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA399
Operates only on 2026-03-07
Mon
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Duration: 3:15, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here
This flight number is listed as serving the following routes:
- Chicago O'Hare (ORD) - Boston Logan (BOS)
- Houston George Bush (IAH) - Charlotte (CLT)
- Keflavik, Reykjavik (KEF) - Washington Dulles (IAD)
- Newark Liberty, New York (EWR) - Fort Lauderdale (FLL)
- Seattle-Tacoma (SEA) - Denver (DEN)