United Airlines フライト UA 2121: Multiple routes

搭乗日を選択
フライト時刻表
直行便:
日々 08:35 Seattle-Tacoma (SEA) 10:53 San Francisco (SFO) 3
UA 2121 Non-stop Airbus A320 (320) 2:18 Effective 2026-08-11 through 2026-10-24
日々 08:42 Seattle-Tacoma (SEA) 11:01 San Francisco (SFO) 3
UA 2121 Non-stop Airbus A320 (320) 2:19 Effective 2026-04-30 through 2026-05-20
日々 09:02 Seattle-Tacoma (SEA) 11:21 San Francisco (SFO) 3
UA 2121 Non-stop Airbus A320 (320) 2:19 Effective 2026-03-29 through 2026-04-29
日々 09:02 Seattle-Tacoma (SEA) 11:20 San Francisco (SFO) 3
UA 2121 Non-stop Airbus A320 (320) 2:18 Effective 2026-05-21 through 2026-08-10
日々 09:02 Seattle-Tacoma (SEA) 11:20 San Francisco (SFO) 3
UA 2121 Non-stop Airbus A320 (320) 2:18 Effective from 2026-10-25
日々 12:45 San Francisco (SFO) 3 16:28 Denver (DEN)
UA 2121 Non-stop Boeing 737-900 (739) 2:43 Effective from 2026-03-29
日々 14:24 Washington Dulles (IAD) 16:37 Denver (DEN)
UA 2121 Non-stop Boeing 737-900 (739) 4:13 Valid until 2026-01-05
日々 17:41 Denver (DEN) 22:15 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-800 (738) 2:34 Effective 2026-02-12 through 2026-03-04
日々 17:50 Denver (DEN) 22:31 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-900 (739) 2:41 Effective 2026-03-29 through 2026-04-29
日々 18:00 Denver (DEN) 22:37 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-800 (738) 2:37 Effective 2026-01-06 through 2026-01-18
月 18:00 Denver (DEN) 22:37 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737 MAX 9 (7M9) 2:37 Operates only on 2026-01-19
日々 18:00 Denver (DEN) 22:37 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-800 (738) 2:37 Effective 2026-01-20 through 2026-02-03
水 18:00 Denver (DEN) 22:37 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737 MAX 9 (7M9) 2:37 Operates only on 2026-02-04
月,火,木-日 18:00 Denver (DEN) 22:37 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-800 (738) 2:37 Effective 2026-02-05 through 2026-02-10
日々 18:00 Denver (DEN) 22:29 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-900 (739) 2:29 Effective 2026-04-30 through 2026-05-20
日々 18:00 Denver (DEN) 22:29 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-800 (738) 2:29 Effective from 2026-05-21
火-日 18:05 Denver (DEN) 22:39 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-800 (738) 2:34 Effective 2026-03-05 through 2026-03-28
月 18:05 Denver (DEN) 22:40 Grand Rapids (GRR)
UA 2121 Non-stop Airbus A320 (320) 2:35 Effective 2026-03-09 through 2026-03-23
水 18:08 Denver (DEN) 22:45 Grand Rapids (GRR)
UA 2121 Non-stop Boeing 737-800 (738) 2:37 Operates only on 2026-02-11
乗継便:
日々 08:35 Seattle-Tacoma (SEA) 16:28 Denver (DEN)
UA 2121 1-stop Airbus A320 (320) 6:53 Effective 2026-08-11 through 2026-10-24
日々 08:42 Seattle-Tacoma (SEA) 16:28 Denver (DEN)
UA 2121 1-stop Airbus A320 (320) 6:46 Effective 2026-04-30 through 2026-05-20
日々 09:02 Seattle-Tacoma (SEA) 16:28 Denver (DEN)
UA 2121 1-stop Airbus A320 (320) 6:26 Effective 2026-03-29 through 2026-04-29
日々 09:02 Seattle-Tacoma (SEA) 16:28 Denver (DEN)
UA 2121 1-stop Airbus A320 (320) 6:26 Effective 2026-05-21 through 2026-08-10
日々 09:02 Seattle-Tacoma (SEA) 16:28 Denver (DEN)
UA 2121 1-stop Airbus A320 (320) 6:26 Effective from 2026-10-25
日々 12:45 San Francisco (SFO) 3 22:31 Grand Rapids (GRR)
UA 2121 1-stop Boeing 737-900 (739) 6:46 Effective 2026-03-29 through 2026-04-29
日々 12:45 San Francisco (SFO) 3 22:29 Grand Rapids (GRR)
UA 2121 1-stop Boeing 737-900 (739) 6:44 Effective from 2026-04-30
日々 08:35 Seattle-Tacoma (SEA) 22:29 Grand Rapids (GRR)
UA 2121 2-stop Airbus A320 (320) 10:54 Effective 2026-08-11 through 2026-10-24
日々 08:42 Seattle-Tacoma (SEA) 22:29 Grand Rapids (GRR)
UA 2121 2-stop Airbus A320 (320) 10:47 Effective 2026-04-30 through 2026-05-20
日々 09:02 Seattle-Tacoma (SEA) 22:31 Grand Rapids (GRR)
UA 2121 2-stop Airbus A320 (320) 10:29 Effective 2026-03-29 through 2026-04-29
日々 09:02 Seattle-Tacoma (SEA) 22:29 Grand Rapids (GRR)
UA 2121 2-stop Airbus A320 (320) 10:27 Effective 2026-05-21 through 2026-08-10
日々 09:02 Seattle-Tacoma (SEA) 22:29 Grand Rapids (GRR)
UA 2121 2-stop Airbus A320 (320) 10:27 Effective from 2026-10-25
This flight number is listed as serving the following routes:
United Airlines フライト UA 2121: Multiple routes
搭乗日を選択
フライト時刻表
直行便:

United Airlines UA2121
Effective 2026-08-11 through 2026-10-24







Duration: 2:18, non-stop
Airbus A320 (320)

直行便:

United Airlines UA2121
Effective 2026-04-30 through 2026-05-20







Duration: 2:19, non-stop
Airbus A320 (320)

直行便:

United Airlines UA2121
Effective 2026-03-29 through 2026-04-29







Duration: 2:19, non-stop
Airbus A320 (320)

直行便:

United Airlines UA2121
Effective 2026-05-21 through 2026-08-10







Duration: 2:18, non-stop
Airbus A320 (320)

直行便:

United Airlines UA2121
Effective from 2026-10-25







Duration: 2:18, non-stop
Airbus A320 (320)

直行便:

United Airlines UA2121
Effective from 2026-03-29







Duration: 2:43, non-stop
Boeing 737-900 (739)

直行便:

United Airlines UA2121
Valid until 2026-01-05







Duration: 4:13, non-stop
Boeing 737-900 (739)

直行便:

United Airlines UA2121
Effective 2026-02-12 through 2026-03-04







Duration: 2:34, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA2121
Effective 2026-03-29 through 2026-04-29







Duration: 2:41, non-stop
Boeing 737-900 (739)

直行便:

United Airlines UA2121
Effective 2026-01-06 through 2026-01-18







Duration: 2:37, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA2121
Operates only on 2026-01-19


-

-

-

-

-

-
Duration: 2:37, non-stop
Boeing 737 MAX 9 (7M9)

直行便:

United Airlines UA2121
Effective 2026-01-20 through 2026-02-03







Duration: 2:37, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA2121
Operates only on 2026-02-04

-

-


-

-

-

-
Duration: 2:37, non-stop
Boeing 737 MAX 9 (7M9)

直行便:

United Airlines UA2121
Effective 2026-02-05 through 2026-02-10



-




Duration: 2:37, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA2121
Effective 2026-04-30 through 2026-05-20







Duration: 2:29, non-stop
Boeing 737-900 (739)

直行便:

United Airlines UA2121
Effective from 2026-05-21







Duration: 2:29, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA2121
Effective 2026-03-05 through 2026-03-28

-






Duration: 2:34, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA2121
Effective 2026-03-09 through 2026-03-23


-

-

-

-

-

-
Duration: 2:35, non-stop
Airbus A320 (320)

直行便:

United Airlines UA2121
Operates only on 2026-02-11

-

-


-

-

-

-
Duration: 2:37, non-stop
Boeing 737-800 (738)

乗継便:

United Airlines UA2121
Effective 2026-08-11 through 2026-10-24







Duration: 6:53, 1-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective 2026-04-30 through 2026-05-20







Duration: 6:46, 1-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective 2026-03-29 through 2026-04-29







Duration: 6:26, 1-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective 2026-05-21 through 2026-08-10







Duration: 6:26, 1-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective from 2026-10-25







Duration: 6:26, 1-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective 2026-03-29 through 2026-04-29







Duration: 6:46, 1-stop
Boeing 737-900 (739)

乗継便:

United Airlines UA2121
Effective from 2026-04-30







Duration: 6:44, 1-stop
Boeing 737-900 (739)

乗継便:

United Airlines UA2121
Effective 2026-08-11 through 2026-10-24







Duration: 10:54, 2-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective 2026-04-30 through 2026-05-20







Duration: 10:47, 2-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective 2026-03-29 through 2026-04-29







Duration: 10:29, 2-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective 2026-05-21 through 2026-08-10







Duration: 10:27, 2-stop
Airbus A320 (320)

乗継便:

United Airlines UA2121
Effective from 2026-10-25







Duration: 10:27, 2-stop
Airbus A320 (320)
This flight number is listed as serving the following routes:
  • Denver (DEN) - Grand Rapids (GRR)
  • San Francisco (SFO) - Denver (DEN)
  • San Francisco (SFO) - Grand Rapids (GRR)
  • Seattle-Tacoma (SEA) - Denver (DEN)
  • Seattle-Tacoma (SEA) - Grand Rapids (GRR)
  • Seattle-Tacoma (SEA) - San Francisco (SFO)
  • Washington Dulles (IAD) - Denver (DEN)