United Airlines flight UA 1121: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 12:15 Guanacaste (LIR) 17:34 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-900 (739) 5:19 Valid until 2026-01-03
Mon-Fri,Sun 12:30 Guanacaste (LIR) 17:49 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-900 (739) 5:19 Valid until 2026-01-05
Sat 12:53 Guanacaste (LIR) 19:18 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-800 (738) 5:25 Effective 2026-05-02 through 2026-05-30
Daily 13:01 Guanacaste (LIR) 19:20 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737 MAX 9 (7M9) 5:19 Effective 2026-03-08 through 2026-03-28
Sat,Sun 13:03 Guanacaste (LIR) 19:28 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-800 (738) 5:25 Effective 2026-03-29 through 2026-04-26
Sat 13:03 Guanacaste (LIR) 19:28 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-800 (738) 5:25 Effective 2026-06-06 through 2026-08-08
Sat 13:03 Guanacaste (LIR) 19:27 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-800 (738) 5:24 Effective 2026-09-26 through 2026-10-24
Mon,Thu,Fri,Sun 14:01 Guanacaste (LIR) 19:20 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-900 (739) 5:19 Effective 2026-01-08 through 2026-02-09
Mon,Thu,Fri,Sun 14:01 Guanacaste (LIR) 19:20 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-800 (738) 5:19 Effective 2026-02-12 through 2026-03-02
Thu,Fri 14:01 Guanacaste (LIR) 19:20 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737 MAX 9 (7M9) 5:19 Effective 2026-03-05 through 2026-03-06
Sat 14:06 Guanacaste (LIR) 19:25 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-900 (739) 5:19 Effective 2026-01-10 through 2026-02-07
Sat 14:06 Guanacaste (LIR) 19:25 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737-800 (738) 5:19 Effective 2026-02-14 through 2026-02-28
Sat 14:06 Guanacaste (LIR) 19:25 Chicago O'Hare (ORD) 5
UA 1121 Non-stop Boeing 737 MAX 9 (7M9) 5:19 Operates only on 2026-03-07
Wed 16:55 San Francisco (SFO) 3 19:09 Spokane (GEG)
UA 1121 Non-stop Airbus A320 (320) 2:14 Operates only on 2026-02-11
Thu,Fri 19:15 San Francisco (SFO) 3 21:41 Kona (KOA)
UA 1121 Non-stop Boeing 737 MAX 9 (7M9) 5:26 Effective 2026-05-21 through 2026-05-22
Mon 19:15 San Francisco (SFO) 3 21:41 Kona (KOA)
UA 1121 Non-stop Boeing 737 MAX 9 (7M9) 5:26 Operates only on 2026-08-10
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1121: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1121
12:15
Guanacaste (LIR)

17:34
Chicago O'Hare (ORD) 5
Valid until 2026-01-03
Mon
-
Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Duration: 5:19, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1121
12:30
Guanacaste (LIR)

17:49
Chicago O'Hare (ORD) 5
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 5:19, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1121
12:53
Guanacaste (LIR)

19:18
Chicago O'Hare (ORD) 5
Effective 2026-05-02 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
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Duration: 5:25, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1121
13:01
Guanacaste (LIR)

19:20
Chicago O'Hare (ORD) 5
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1121
13:03
Guanacaste (LIR)

19:28
Chicago O'Hare (ORD) 5
Effective 2026-03-29 through 2026-04-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 5:25, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1121
13:03
Guanacaste (LIR)

19:28
Chicago O'Hare (ORD) 5
Effective 2026-06-06 through 2026-08-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
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Duration: 5:25, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1121
13:03
Guanacaste (LIR)

19:27
Chicago O'Hare (ORD) 5
Effective 2026-09-26 through 2026-10-24
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Duration: 5:24, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1121
14:01
Guanacaste (LIR)

19:20
Chicago O'Hare (ORD) 5
Effective 2026-01-08 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:19, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1121
14:01
Guanacaste (LIR)

19:20
Chicago O'Hare (ORD) 5
Effective 2026-02-12 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:19, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1121
14:01
Guanacaste (LIR)

19:20
Chicago O'Hare (ORD) 5
Effective 2026-03-05 through 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 5:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1121
14:06
Guanacaste (LIR)

19:25
Chicago O'Hare (ORD) 5
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
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Duration: 5:19, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1121
14:06
Guanacaste (LIR)

19:25
Chicago O'Hare (ORD) 5
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:19, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1121
14:06
Guanacaste (LIR)

19:25
Chicago O'Hare (ORD) 5
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1121
16:55
San Francisco (SFO) 3

19:09
Spokane (GEG)
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
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Duration: 2:14, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1121
19:15
San Francisco (SFO) 3

21:41
Kona (KOA)
Effective 2026-05-21 through 2026-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 5:26, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1121
19:15
San Francisco (SFO) 3

21:41
Kona (KOA)
Operates only on 2026-08-10
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:26, non-stop
Boeing 737 MAX 9 (7M9)
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Parallax here -
This flight number is listed as serving the following routes:
  • Guanacaste (LIR) - Chicago O'Hare (ORD)
  • San Francisco (SFO) - Kona (KOA)
  • San Francisco (SFO) - Spokane (GEG)
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