United Airlines
flight
UA 1831:
Multiple routes
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1831
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 2:08, non-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1831
Effective 2026-02-14 through 2026-03-01
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
Duration: 2:08, non-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1831
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:46, non-stop
Airbus A319 (319)
Airbus A319 (319)
Direct Flights:
United Airlines UA1831
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:46, non-stop
Boeing 737-800 (738)
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1831
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:46, non-stop
Airbus A319 (319)
Airbus A319 (319)
Direct Flights:
United Airlines UA1831
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:51, non-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1831
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
-
Duration: 1:51, non-stop
Airbus A319 (319)
Airbus A319 (319)
Direct Flights:
United Airlines UA1831
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1831
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:50, non-stop
Airbus A319 (319)
Airbus A319 (319)
Direct Flights:
United Airlines UA1831
Effective 2026-03-08 through 2026-03-22
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1831
Valid until 2026-01-02
Mon
Tue
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 1:19, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Effective 2026-01-04 through 2026-01-05
Mon
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Duration: 1:20, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Effective from 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:32, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Effective 2026-02-13 through 2026-02-27
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
-
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1831
Effective 2026-03-05 through 2026-03-06
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 1:25, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Operates only on 2026-02-12
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 1:25, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Effective 2026-02-14 through 2026-03-04
Mon
Tue
-
-
Wed
Thu
Fri
-
-
Sat
Sun
-
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1831
Effective 2026-03-07 through 2026-03-21
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 1:25, non-stop
Airbus A319 (319)
Airbus A319 (319)
Direct Flights:
United Airlines UA1831
Effective 2026-03-08 through 2026-03-17
Mon
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Duration: 1:25, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Effective 2026-03-11 through 2026-03-12
Mon
-
-
Tue
-
-
Wed
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 1:25, non-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1831
Effective 2026-03-18 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:25, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:32, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1831
Effective 2026-02-17 through 2026-03-03
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1831
Valid until 2026-01-03
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 2:57, non-stop
Boeing 737-900 (739)
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 5:00, 1-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-14 through 2026-03-01
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
Duration: 4:55, 1-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:39, 1-stop
Airbus A319 (319)
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:22, 1-stop
Boeing 737-800 (738)
Boeing 737-800 (738)
Non-Direct Flights:
United Airlines UA1831
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:22, 1-stop
Airbus A319 (319)
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-12 through 2026-03-04
Mon
Tue
-
-
Wed
Thu
Fri
-
-
Sat
Sun
-
-
Duration: 4:20, 1-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-13 through 2026-02-27
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
-
-
Duration: 4:17, 1-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-17 through 2026-03-03
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 4:26, 1-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-03-05 through 2026-03-06
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 4:19, 1-stop
Airbus A319 (319)
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-03-07 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
-
Duration: 4:21, 1-stop
Airbus A319 (319)
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA1831
Valid until 2026-01-02
Mon
Tue
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 3:49, 1-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-01-04 through 2026-01-05
Mon
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Duration: 3:50, 1-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-03-08 through 2026-03-22
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Duration: 4:18, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-12 through 2026-03-04
Mon
Tue
-
-
Wed
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 7:29, 2-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-13 through 2026-02-27
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
-
-
Duration: 7:26, 2-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-17 through 2026-03-03
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 7:35, 2-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1831
Effective 2026-02-14 through 2026-02-28
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 7:24, 2-stop
Boeing 737-700 (73G)
Boeing 737-700 (73G)
This flight number is listed as serving the following routes:
- Atlanta (ATL) - Newark Liberty, New York (EWR)
- Atlanta (ATL) - Washington Dulles (IAD)
- Chicago O'Hare (ORD) - Atlanta (ATL)
- Chicago O'Hare (ORD) - Newark Liberty, New York (EWR)
- Chicago O'Hare (ORD) - Washington Dulles (IAD)
- Washington Dulles (IAD) - Newark Liberty, New York (EWR)
- West Palm Beach (PBI) - Newark Liberty, New York (EWR)