Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL2121

Live map

Live map filtered to UAL2121. Shown when the flight is currently airborne.

Route airports View route page →

Departure

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
08:22 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
250° / 7 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
22°C / 11°C
Altimeter
30.24 inHg

Obs: 2026-07-14T13:53:00.000Z

Raw METAR / TAF 
METAR KDEN 141353Z 25007KT 10SM CLR 22/11 A3024 RMK AO2 SLP148 T02220106

TAF KDEN 141121Z 1412/1518 19011KT P6SM SKC FM141300 23006KT P6SM SKC FM141500 VRB06KT P6SM FEW110 FM141700 10011KT P6SM FEW110 FM142100 12014G22KT P6SM FEW110 FM150100 15014G22KT P6SM FEW110 FM150500 18014G22KT P6SM SKC FM151000 18012KT P6SM SKC FM151400 23006KT P6SM SKC

flight Live Traffic

flight_takeoff 377 Departures
flight_land 477 Arrivals

Arrival

GRR KGRR VFR

Gerald R. Ford International Airport

Grand Rapids, US

Local time
10:22 EDT
Timezone
America/Detroit
Type
Large Airport
Elevation
794 ft
Coordinates
42.8808, -85.5228

cloud Weather

Wind
270° / 4 kt
Visibility
9 SM
Ceiling
SCT 25,000 ft
Temp / Dew
29°C / 21°C
Altimeter
30.17 inHg

Obs: 2026-07-14T13:53:00.000Z

Raw METAR / TAF 
METAR KGRR 141353Z 27004KT 9SM SCT250 29/21 A3017 RMK AO2 SLP209 T02890211 $

TAF KGRR 141140Z 1412/1512 25007KT P6SM SCT250

flight Live Traffic

flight_takeoff 20 Departures
flight_land 20 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-14 AA2BA4 DEN → GRR Jul 14, 00:30 UTCJul 14, 02:45 UTC2h 15m - -
2026-07-14 AA2BA4 DEN → GRR Jul 14, 00:18 UTCJul 14, 02:42 UTC2h 24m +23m -6m
2026-07-13 A9DCE9 DEN → GRR Jul 13, 02:50 UTCJul 13, 04:50 UTC2h 0m - -
2026-07-12 AAA593 DEN → GRR Jul 12, 00:18 UTCJul 12, 02:13 UTC1h 55m +23m -15m
2026-07-12 AAA593 DEN → GRR Jul 12, 00:10 UTCJul 12, 02:15 UTC2h 5m - -
2026-07-11 A92365 DEN → GRR Jul 11, 02:00 UTCJul 11, 04:05 UTC2h 5m - -
2026-07-10 A94B50 DEN → GRR Jul 10, 00:20 UTCJul 10, 02:35 UTC2h 15m - -
2026-07-09 A8FC73 DEN → GRR Jul 9, 06:20 UTCJul 9, 08:55 UTC2h 35m - -
2026-07-08 A43EC9 DEN → GRR Jul 8, 00:59 UTCJul 8, 02:49 UTC1h 50m +64m +6m
2026-07-08 A43EC9 - Jul 8, 00:40 UTCJul 8, 02:15 UTC1h 35m - -
2026-07-07 A41E90 - Jul 7, 00:35 UTCJul 7, 02:40 UTC2h 5m - -
2026-07-06 A46D4E - Jul 6, 00:30 UTCJul 6, 02:35 UTC2h 5m - -
2026-07-04 A448D6 DEN → GRR Jul 4, 00:35 UTCJul 4, 02:40 UTC2h 5m - -
2026-07-04 A448D6 DEN → GRR Jul 4, 00:25 UTCJul 4, 02:39 UTC2h 14m +30m -10m
2026-07-03 A91536 DEN → GRR Jul 3, 01:50 UTCJul 3, 04:10 UTC2h 20m - -
2026-07-02 A92478 DEN → GRR Jul 2, 00:20 UTCJul 2, 02:20 UTC2h 0m - -
2026-07-01 A1239C DEN → GRR Jul 1, 01:10 UTCJul 1, 03:11 UTC2h 1m +75m -3m
2026-07-01 A1239C DEN → GRR Jul 1, 01:15 UTCJul 1, 03:15 UTC2h 0m - -
2026-06-30 A41E74 DEN → GRR Jun 30, 00:14 UTCJun 30, 02:10 UTC1h 55m - -
2026-06-30 A41E74 DEN → GRR Jun 30, 00:18 UTCJun 30, 02:11 UTC1h 53m +23m -15m
2026-06-29 AB1B3E - Jun 29, 00:24 UTCJun 29, 02:35 UTC2h 10m - -
2026-06-28 A0ACFD DEN → GRR Jun 28, 00:18 UTCJun 28, 02:28 UTC2h 10m +23m +1m
2026-06-28 A0ACFD - Jun 28, 00:35 UTCJun 28, 02:29 UTC1h 55m - -
2026-06-27 A8D4CC - Jun 27, 00:20 UTCJun 27, 02:25 UTC2h 5m - -
2026-06-26 A3CF6D DEN → GRR Jun 26, 00:20 UTCJun 26, 02:20 UTC2h 0m - -
2026-06-26 A3CF6D DEN → GRR Jun 26, 00:18 UTCJun 26, 02:20 UTC2h 2m +23m -8m
2026-06-25 A445F2 - Jun 25, 02:45 UTCJun 25, 04:54 UTC2h 10m - -
2026-06-24 A494E9 DEN → GRR Jun 24, 00:30 UTCJun 24, 02:24 UTC1h 55m - -
2026-06-23 A445EC - Jun 23, 00:30 UTCJun 23, 02:29 UTC2h 0m - -
2026-06-22 A92365 - Jun 22, 00:14 UTCJun 22, 02:40 UTC2h 25m - -

Performance history

Flights tracked
177 showing last 30
Avg arrival delay
-6m
On-time arrival
100% 100% on time
Aircraft used
21

Monthly activity 4 months

Month Flights tracked
July 2026 18
June 2026 35
May 2026 61
April 2026 63

UAL2121 frequently asked

Where does flight UAL2121 fly?
UAL2121 flies from DEN to GRR. View the full route page.
How long is flight UAL2121?
Based on observed flights, UAL2121 takes on average 2h 5m from takeoff to landing.
How often does UAL2121 fly?
UAL2121 has been observed flying several times a week in our tracking data. We've recorded 177 flights under this callsign.
Is flight UAL2121 usually on time?
Across recent flights, UAL2121 arrives 6 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL2121?
UAL2121 has been operated by 21 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL2121 live?
Yes. When UAL2121 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.