United Airlines flight UA 2121: Multiple routes

Ad box here 1220564027 I FlightWNum Top Box
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 11:00 Chicago O'Hare (ORD) 1 14:18 New York LaGuardia (LGA) B
UA 2121 Non-stop Boeing 737-800 (738) 2:18 Effective 2025-10-26 through 2026-01-04
Sun 11:00 Chicago O'Hare (ORD) 1 14:18 New York LaGuardia (LGA) B
UA 2121 Non-stop Boeing 737-800 (738) 2:18 Effective from 2026-02-15
Daily 11:30 Denver (DEN) 13:27 El Paso (ELP)
UA 2121 Non-stop Airbus A319 (319) 1:57 Effective 2025-08-01 through 2025-08-18
Daily 16:50 Saint Louis (STL) 1 19:06 George Bush, Houston (IAH) C
UA 2121 Non-stop Airbus A319 (319) 2:16 Effective 2025-05-02 through 2025-05-21
Thu 16:57 Saint Louis (STL) 1 19:10 George Bush, Houston (IAH) C
UA 2121 Non-stop Boeing 737 MAX 8 (7M8) 2:13 Operates only on 2025-05-01
Daily 17:15 Toronto Pearson (YYZ) 1 18:12 Chicago O'Hare (ORD) 1
UA 2121 Non-stop Airbus A319 (319) 1:57 Effective 2025-08-19 through 2025-09-24
Wed,Thu 18:20 Miami (MIA) 21:01 Denver (DEN)
UA 2121 Non-stop Boeing 737-900 (739) 4:41 Effective 2025-05-22 through 2025-05-28
Mon,Thu,Fri 18:20 Miami (MIA) 21:01 Denver (DEN)
UA 2121 Non-stop Boeing 737 MAX 8 (7M8) 4:41 Effective 2025-05-23 through 2025-05-30
Thu,Fri,Sun 18:20 Miami (MIA) 21:01 Denver (DEN)
UA 2121 Non-stop Boeing 737 MAX 8 (7M8) 4:41 Effective 2025-06-01 through 2025-06-22
Mon 18:20 Miami (MIA) 21:01 Denver (DEN)
UA 2121 Non-stop Boeing 737-800 (738) 4:41 Effective 2025-06-02 through 2025-06-23
Wed 18:20 Miami (MIA) 21:01 Denver (DEN)
UA 2121 Non-stop Boeing 737-900 (739) 4:41 Effective 2025-06-04 through 2025-06-18
Wed 18:24 Miami (MIA) 21:01 Denver (DEN)
UA 2121 Non-stop Boeing 737-800 (738) 4:37 Operates only on 2025-06-25
Daily 19:18 Denver (DEN) 21:13 Great Falls (GTF)
UA 2121 Non-stop Airbus A319 (319) 1:55 Effective 2025-06-26 through 2025-07-31
Ad flat here 1377413384 I FlightWNum Lower
Parallax here
This flight number is listed as serving the following routes:


Feedback - Disclaimer - Privacy - new_base.html - DESKTOP - CACHE: False - LANG: en - IS_EU: False
FlightMapper.net Flight Search Countries Airlines
LANGUAGES
United Airlines flight UA 2121: Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA2121
11:00
Chicago O'Hare (ORD) 1

14:18
New York LaGuardia (LGA) B
Effective 2025-10-26 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:18, non-stop
Boeing 737-800 (738)
United Airlines UA2121
11:00
Chicago O'Hare (ORD) 1

14:18
New York LaGuardia (LGA) B
Effective from 2026-02-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:18, non-stop
Boeing 737-800 (738)
United Airlines UA2121
11:30
Denver (DEN)

13:27
El Paso (ELP)
Effective 2025-08-01 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:57, non-stop
Airbus A319 (319)
United Airlines UA2121
16:50
Saint Louis (STL) 1

19:06
George Bush, Houston (IAH) C
Effective 2025-05-02 through 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:16, non-stop
Airbus A319 (319)
United Airlines UA2121
16:57
Saint Louis (STL) 1

19:10
George Bush, Houston (IAH) C
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:13, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2121
17:15
Toronto Pearson (YYZ) 1

18:12
Chicago O'Hare (ORD) 1
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:57, non-stop
Airbus A319 (319)
United Airlines UA2121
18:20
Miami (MIA)

21:01
Denver (DEN)
Effective 2025-05-22 through 2025-05-28
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:41, non-stop
Boeing 737-900 (739)
United Airlines UA2121
18:20
Miami (MIA)

21:01
Denver (DEN)
Effective 2025-05-23 through 2025-05-30
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:41, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2121
18:20
Miami (MIA)

21:01
Denver (DEN)
Effective 2025-06-01 through 2025-06-22
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:41, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2121
18:20
Miami (MIA)

21:01
Denver (DEN)
Effective 2025-06-02 through 2025-06-23
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:41, non-stop
Boeing 737-800 (738)
United Airlines UA2121
18:20
Miami (MIA)

21:01
Denver (DEN)
Effective 2025-06-04 through 2025-06-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:41, non-stop
Boeing 737-900 (739)
United Airlines UA2121
18:24
Miami (MIA)

21:01
Denver (DEN)
Operates only on 2025-06-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:37, non-stop
Boeing 737-800 (738)
United Airlines UA2121
19:18
Denver (DEN)

21:13
Great Falls (GTF)
Effective 2025-06-26 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:55, non-stop
Airbus A319 (319)
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) - New York LaGuardia (LGA)
  • Denver (DEN) - El Paso (ELP)
  • Denver (DEN) - Great Falls (GTF)
  • Miami (MIA) - Denver (DEN)
  • Saint Louis (STL) - George Bush, Houston (IAH)
  • Toronto Pearson (YYZ) - Chicago O'Hare (ORD)
All United Airlines flights
Feedback     -     Disclaimer     -     Privacy - new_base.html - MOBILE

- CACHE: False - LANG: en - IS_EU: False