Aircraft N23721 Data
1
aircraft record found
N23721
1999 Boeing 737-724, c/n 28940
Latest photos of N23721
Mark Pasqualino
@ KORD
Mark Pasqualino
@ KIAH
Dariusz Jezewski www.FotoDj.com
@ KEWR
FerryPNL
@ KSNA
Recent Routes
NO LIVE DATA
United Airlines
| Time | Callsign | FL | Speed | Heading | Route |
|---|---|---|---|---|---|
| 2026-08-31 02:38 UTC | UAL1866 / UA1866 | FL400 | 396 kt | 281° | — |
| 2026-08-30 21:18 UTC | UAL1574 / UA1574 | — | 2 kt | 270° |
DFW → EWR
DFW
→
EWR
Dallas-fort Worth International Airport → Newark Liberty International Airport |
| 2026-08-30 16:10 UTC | UAL454 / UA454 | — | 24 kt | 211° |
EWR → DFW
EWR
→
DFW
Newark Liberty International Airport → Dallas-fort Worth International Airport |
| 2026-08-30 08:38 UTC | UAL3881 / UA3881 | — | 1 kt | 183° | — |
| 2026-08-25 05:18 UTC | UAL3882 / UA3882 | FL-1 | 124 kt | 87° | — |
| 2026-08-25 01:24 UTC | UAL1819 / UA1819 | — | 12 kt | 45° |
RNO → ORD
RNO
→
ORD
Reno/tahoe International Airport → Chicago O'hare International Airport |
| 2026-08-24 19:34 UTC | UAL1993 / UA1993 | — | 1 kt | 0° |
ORD → RNO
ORD
→
RNO
Chicago O'hare International Airport → Reno/tahoe International Airport |
| 2026-08-24 14:12 UTC | UAL2465 / UA2465 | — | 6 kt | 188° |
BNA → ORD
BNA
→
ORD
Nashville International Airport → Chicago O'hare International Airport |
| 2026-08-23 23:54 UTC | UAL2264 / UA2264 | — | 20 kt | 312° |
IAD → BNA
IAD
→
BNA
Washington Dulles International Airport → Nashville International Airport |
| 2026-08-23 20:18 UTC | UAL1757 / UA1757 | — | 5 kt | 183° |
SFO → RNO
SFO
→
RNO
San Francisco International Airport → Reno/tahoe International Airport |
| 2026-08-23 17:44 UTC | UAL2795 / UA2795 | FL8 | 137 kt | 327° | — |
| 2026-08-23 14:10 UTC | UAL775 / UA775 | — | 11 kt | 188° |
ORD → STL
ORD
→
STL
Chicago O'hare International Airport → St Louis Lambert International Airport |
| 2026-08-23 04:34 UTC | UAL2131 / UA2131 | — | 15 kt | 93° |
ATL → IAD
ATL
→
IAD
Hartsfield/jackson Atlanta International Airport → Washington Dulles International Airport |
| 2026-08-23 01:24 UTC | UAL1240 / UA1240 | — | 15 kt | 270° |
DFW → IAD
DFW
→
IAD
Dallas-fort Worth International Airport → Washington Dulles International Airport |
| 2026-08-22 20:42 UTC | UAL1388 / UA1388 | — | 18 kt | 270° | — |
| 2026-08-22 17:54 UTC | UAL1478 / UA1478 | FL4 | 136 kt | 270° | — |
| 2026-08-22 02:20 UTC | UAL241 / UA241 | — | 4 kt | 326° | — |
| 2026-08-21 19:32 UTC | UAL2026 / UA2026 | FL4 | 147 kt | 270° | — |
| 2026-08-21 16:12 UTC | UAL2256 / UA2256 | FL153 | 357 kt | 252° | — |
| 2026-08-21 01:02 UTC | UAL3890 / UA3890 | FL6 | 132 kt | 270° | — |
| 2026-08-20 12:58 UTC | UAL1201 / UA1201 | FL4 | 131 kt | 270° | — |
| 2026-08-20 01:02 UTC | UAL1200 / UA1200 | FL400 | 430 kt | 209° | — |
| 2026-08-19 22:22 UTC | UAL2178 / UA2178 | FL5 | 139 kt | 269° | — |
| 2026-08-19 18:44 UTC | UAL2214 / UA2214 | FL400 | 420 kt | 212° | — |
| 2026-08-19 15:26 UTC | UAL2821 / UA2821 | FL4 | 133 kt | 270° | — |
| 2026-08-18 22:30 UTC | UAL413 / UA413 | FL972 | 149 kt | 132° |
IAD → RSW
IAD
→
RSW
Washington Dulles International Airport → Southwest Florida International Airport |
| 2026-08-18 13:28 UTC | UAL1823 / UA1823 | FL3 | 143 kt | 270° | — |
| 2026-08-18 03:06 UTC | UAL497 / UA497 | — | 144 kt | 168° |
DEN → SLC
DEN
→
SLC
Denver International Airport → Salt Lake City International Airport |
| 2026-08-18 00:46 UTC | UAL2376 / UA2376 | FL5 | 146 kt | 270° | — |
| 2026-08-17 21:40 UTC | UAL1211 / UA1211 | — | 14 kt | 329° | — |
| 2026-08-17 17:38 UTC | UAL1089 / UA1089 | FL3 | 146 kt | 270° | — |
| 2026-08-17 14:24 UTC | UAL1024 / UA1024 | — | 3 kt | 59° | — |
| 2026-08-17 01:32 UTC | UAL1785 / UA1785 | FL4 | 148 kt | 271° | — |
| 2026-08-16 20:36 UTC | UAL752 / UA752 | — | 9 kt | 354° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-08-16 17:28 UTC | UAL614 / UA614 | — | 1 kt | 231° |
ORD → LGA
ORD
→
LGA
Chicago O'hare International Airport → Laguardia Airport |
| 2026-08-15 23:50 UTC | UAL2207 / UA2207 | FL171 | 371 kt | 260° | — |
| 2026-08-15 19:38 UTC | UAL1371 / UA1371 | — | 10 kt | 0° | — |
| 2026-08-15 17:22 UTC | UAL346 / UA346 | FL11 | 135 kt | 0° | — |
| 2026-08-14 19:58 UTC | UAL2230 / UA2230 | — | 1 kt | 0° | — |
| 2026-08-14 02:50 UTC | UAL1113 / UA1113 | FL2 | 132 kt | 209° | — |
| 2026-08-13 19:26 UTC | UAL2169 / UA2169 | — | 4 kt | 352° |
MSP → IAD
MSP
→
IAD
Minneapolis-st Paul Intl/wold-chamberlain Airport → Washington Dulles International Airport |
| 2026-08-13 15:30 UTC | UAL2604 / UA2604 | — | 1 kt | 222° |
IAD → MSP
IAD
→
MSP
Washington Dulles International Airport → Minneapolis-st Paul Intl/wold-chamberlain Airport |
| 2026-08-13 11:08 UTC | UAL1252 / UA1252 | — | 0 kt | 0° |
IAD → ORD
IAD
→
ORD
Washington Dulles International Airport → Chicago O'hare International Airport |
| 2026-08-12 01:24 UTC | UAL2652 / UA2652 | FL8 | 143 kt | 229° | — |
| 2026-08-11 23:10 UTC | UAL2458 / UA2458 | — | 16 kt | 90° |
ORD → LGA
ORD
→
LGA
Chicago O'hare International Airport → Laguardia Airport |
| 2026-08-11 17:14 UTC | UAL2176 / UA2176 | FL400 | 380 kt | 281° |
ORD → WY34
ORD
→
WY34
Chicago O'hare International Airport → Bridger Creek Airport |
| 2026-08-11 12:58 UTC | UAL2684 / UA2684 | — | 16 kt | 90° | — |
| 2026-08-11 07:06 UTC | UAL1557 / UA1557 | FL6 | 145 kt | 117° |
ABQ → ORD
ABQ
→
ORD
Albuquerque International Sunport Airport → Chicago O'hare International Airport |
| 2026-08-11 04:42 UTC | UAL545 / UA545 | — | 16 kt | 101° |
PDX → DEN
PDX
→
DEN
Portland International Airport → Denver International Airport |
| 2026-08-10 21:50 UTC | UAL1069 / UA1069 | FL9 | 145 kt | 274° | — |
| 2026-08-10 18:18 UTC | UAL576 / UA576 | — | 13 kt | 0° |
MSP → ORD
MSP
→
ORD
Minneapolis-st Paul Intl/wold-chamberlain Airport → Chicago O'hare International Airport |
| 2026-08-10 15:46 UTC | UAL2805 / UA2805 | — | 0 kt | 191° |
ORD → MSP
ORD
→
MSP
Chicago O'hare International Airport → Minneapolis-st Paul Intl/wold-chamberlain Airport |
| 2026-08-10 01:58 UTC | UAL1989 / UA1989 | — | 16 kt | 90° | — |
| 2026-08-09 23:24 UTC | UAL1781 / UA1781 | FL11 | 135 kt | 313° | — |
| 2026-08-09 16:32 UTC | UAL2032 / UA2032 | FL8 | 148 kt | 270° | — |
| 2026-08-09 00:12 UTC | UAL378 / UA378 | FL370 | 391 kt | 281° | — |
| 2026-08-08 20:06 UTC | UAL1888 / UA1888 | — | 13 kt | 90° |
DCA → ORD
DCA
→
ORD
Ronald Reagan Washington Ntl Airport → Chicago O'hare International Airport |
| 2026-08-08 17:12 UTC | UAL519 / UA519 | — | 9 kt | 354° |
KLDR → DEN
KLDR
→
DEN
Uscg San Diego Heliport → Denver International Airport |
| 2026-08-08 12:58 UTC | UAL2070 / UA2070 | — | 10 kt | 191° | — |
| 2026-08-08 04:04 UTC | UAL376 / UA376 | — | 8 kt | 298° |
AUS → IAD
AUS
→
IAD
Austin-bergstrom International Airport → Washington Dulles International Airport |
| 2026-08-07 20:20 UTC | UAL2746 / UA2746 | — | 3 kt | 180° |
AUS → SFO
AUS
→
SFO
Austin-bergstrom International Airport → San Francisco International Airport |
| 2026-08-07 15:56 UTC | UAL204 / UA204 | — | 1 kt | 354° |
ABQ → IAD
ABQ
→
IAD
Albuquerque International Sunport Airport → Washington Dulles International Airport |
Live location data from OpenSky Network
Airframe Info
| Manufacturer | Boeing |
| Model | 737-724 Search all Boeing 737-724 |
| Year built | 1999 |
| Construction Number (C/N) | 28940 |
| Aircraft Type | Fixed wing multi engine |
| Number of Seats | 149 |
| Number of Engines | 2 |
| Engine Type | Turbofan |
| Engine Manufacturer and Model | CFM International CFM56-7B2 |
Aircraft
| Registration Number | N23721 |
| Mode S (ICAO24) Code | a22539 |
| Certification Class | Standard |
| Certification Issued | 1999-03-10 |
| Air Worthiness Test | 1999-03-09 |
| Last Action Taken | 2023-09-09 |
| Current Status | Valid |
Owner
| Registration Type | Corporation |
| Owner | UNITED AIRLINES INC |
| Address |
233 S Wacker Dr Chicago, IL 606067147 United States |
| Region | Great Lakes |