Aircraft N23721 Data
1
aircraft record found
N23721
1999 Boeing 737-724, c/n 28940
Latest photos of N23721
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Recent Routes
NO LIVE DATA
United Airlines
| Time | Callsign | FL | Speed | Heading | Route |
|---|---|---|---|---|---|
| 2026-09-19 21:48 UTC | UAL8130 / UA8130 | FL2 | 130 kt | 208° | — |
| 2026-09-19 16:04 UTC | UAL1683 / UA1683 | FL9 | 134 kt | 90° |
SJC → ORD
SJC
→
ORD
Norman Y Mineta San Jose International Airport → Chicago O'hare International Airport |
| 2026-09-19 03:42 UTC | UAL349 / UA349 | FL5 | 135 kt | 28° | — |
| 2026-09-19 01:00 UTC | UAL403 / UA403 | — | 10 kt | 110° | — |
| 2026-09-18 22:38 UTC | UAL664 / UA664 | FL30 | 208 kt | 225° |
LAS → ORD
LAS
→
ORD
Harry Reid International Airport → Chicago O'hare International Airport |
| 2026-09-18 19:08 UTC | UAL511 / UA511 | — | 14 kt | 14° |
DCA → ORD
DCA
→
ORD
Ronald Reagan Washington Ntl Airport → Chicago O'hare International Airport |
| 2026-09-18 16:00 UTC | UAL307 / UA307 | — | 3 kt | 253° |
MSP → ORD
MSP
→
ORD
Minneapolis-st Paul Intl/wold-chamberlain Airport → Chicago O'hare International Airport |
| 2026-09-18 01:16 UTC | UAL785 / UA785 | — | 4 kt | 8° |
ATL → ORD
ATL
→
ORD
Hartsfield/jackson Atlanta International Airport → Chicago O'hare International Airport |
| 2026-09-17 22:04 UTC | UAL1848 / UA1848 | — | 1 kt | 180° |
EWR → ATL
EWR
→
ATL
Newark Liberty International Airport → Hartsfield/jackson Atlanta International Airport |
| 2026-09-17 18:38 UTC | UAL1992 / UA1992 | — | 1 kt | 186° | — |
| 2026-09-17 15:44 UTC | UAL544 / UA544 | FL6 | 143 kt | 230° | — |
| 2026-09-15 19:22 UTC | UAL2026 / UA2026 | FL3 | 141 kt | 89° | — |
| 2026-09-15 16:32 UTC | UAL2256 / UA2256 | — | 8 kt | 259° | — |
| 2026-09-15 13:04 UTC | UAL678 / UA678 | FL4 | 136 kt | 270° | — |
| 2026-09-15 02:24 UTC | UAL2339 / UA2339 | FL34 | 253 kt | 232° | — |
| 2026-09-14 23:06 UTC | UAL1853 / UA1853 | FL3 | 141 kt | 90° | — |
| 2026-09-14 20:52 UTC | UAL1852 / UA1852 | — | 1 kt | 31° | — |
| 2026-09-14 17:30 UTC | UAL1089 / UA1089 | FL5 | 143 kt | 270° | — |
| 2026-09-14 14:24 UTC | UAL1024 / UA1024 | — | 19 kt | 239° | — |
| 2026-09-14 02:42 UTC | UAL1678 / UA1678 | FL4 | 142 kt | 89° |
SFO → DCA
SFO
→
DCA
San Francisco International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-09-13 22:28 UTC | KDCA | — | 6 kt | 354° | — |
| 2026-09-13 18:12 UTC | UAL2190 / UA2190 | FL5 | 143 kt | 90° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-09-13 14:14 UTC | UAL482 / UA482 | — | 10 kt | 177° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-09-13 03:46 UTC | UAL2229 / UA2229 | — | 12 kt | 87° |
BOS → ORD
BOS
→
ORD
General Edward Lawrence Logan International Airport → Chicago O'hare International Airport |
| 2026-09-12 23:56 UTC | UAL2466 / UA2466 | — | 1 kt | 290° |
MCO → ORD
MCO
→
ORD
Orlando International Airport → Chicago O'hare International Airport |
| 2026-09-12 19:10 UTC | UAL1935 / UA1935 | — | 24 kt | 194° | — |
| 2026-09-12 16:46 UTC | UAL485 / UA485 | FL50 | 297 kt | 42° | — |
| 2026-09-12 14:08 UTC | UAL567 / UA567 | — | 8 kt | 180° |
STL → ORD
STL
→
ORD
St Louis Lambert International Airport → Chicago O'hare International Airport |
| 2026-09-12 00:48 UTC | UAL2652 / UA2652 | FL8 | 136 kt | 50° | — |
| 2026-09-11 21:52 UTC | UAL739 / UA739 | FL8 | 145 kt | 90° | — |
| 2026-09-11 19:02 UTC | UAL247 / UA247 | FL17 | 132 kt | 144° |
PHL → ORD
PHL
→
ORD
Philadelphia International Airport → Chicago O'hare International Airport |
| 2026-09-11 16:00 UTC | UAL1294 / UA1294 | — | 7 kt | 6° |
EWR → ATL
EWR
→
ATL
Newark Liberty International Airport → Hartsfield/jackson Atlanta International Airport |
| 2026-09-11 01:02 UTC | UAL378 / UA378 | FL320 | 403 kt | 281° |
MCO → ORD
MCO
→
ORD
Orlando International Airport → Chicago O'hare International Airport |
| 2026-09-10 20:28 UTC | UAL1888 / UA1888 | — | 20 kt | 90° |
DCA → ORD
DCA
→
ORD
Ronald Reagan Washington Ntl Airport → Chicago O'hare International Airport |
| 2026-09-10 16:52 UTC | UAL2847 / UA2847 | — | 6 kt | 301° |
SFO → ORD
SFO
→
ORD
San Francisco International Airport → Chicago O'hare International Airport |
| 2026-09-10 14:10 UTC | UAL441 / UA441 | — | 2 kt | 231° |
DCA → ORD
DCA
→
ORD
Ronald Reagan Washington Ntl Airport → Chicago O'hare International Airport |
| 2026-09-10 02:46 UTC | UAL2160 / UA2160 | — | 6 kt | 354° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-09-09 23:12 UTC | UAL563 / UA563 | — | 10 kt | 174° |
ORD → EWR
ORD
→
EWR
Chicago O'hare International Airport → Newark Liberty International Airport |
| 2026-09-09 18:28 UTC | UAL1952 / UA1952 | FL7 | 137 kt | 147° | — |
| 2026-09-08 20:26 UTC | UAL1757 / UA1757 | — | 18 kt | 270° |
IAD → SFO
IAD
→
SFO
Washington Dulles International Airport → San Francisco International Airport |
| 2026-09-08 17:46 UTC | UAL2795 / UA2795 | FL3 | 143 kt | 328° | — |
| 2026-09-08 03:42 UTC | UAL2131 / UA2131 | FL5 | 138 kt | 50° |
ATL → IAD
ATL
→
IAD
Hartsfield/jackson Atlanta International Airport → Washington Dulles International Airport |
| 2026-09-08 01:24 UTC | UAL1240 / UA1240 | — | 1 kt | 0° |
DFW → IAD
DFW
→
IAD
Dallas-fort Worth International Airport → Washington Dulles International Airport |
| 2026-09-07 20:48 UTC | UAL1388 / UA1388 | — | 9 kt | 270° | — |
| 2026-09-07 13:56 UTC | UAL1077 / UA1077 | FL-3 | 126 kt | 355° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-09-06 17:32 UTC | UAL3940 / UA3940 | — | 15 kt | 90° | — |
| 2026-09-05 17:24 UTC | UAL1548 / UA1548 | — | 2 kt | 276° |
STL → DEN
STL
→
DEN
St Louis Lambert International Airport → Denver International Airport |
| 2026-09-05 02:30 UTC | UAL1866 / UA1866 | FL360 | 413 kt | 281° | — |
| 2026-09-04 20:06 UTC | UAL1626 / UA1626 | — | 15 kt | 186° |
EWR → SAN
EWR
→
SAN
Newark Liberty International Airport → San Diego International Airport |
| 2026-09-04 17:32 UTC | UAL601 / UA601 | FL15 | 153 kt | 176° | — |
| 2026-09-04 14:16 UTC | UAL577 / UA577 | — | 1 kt | 214° |
EWR → BOS
EWR
→
BOS
Newark Liberty International Airport → General Edward Lawrence Logan International Airport |
| 2026-09-04 05:16 UTC | UAL1637 / UA1637 | — | 1 kt | 205° |
EWR → STL
EWR
→
STL
Newark Liberty International Airport → St Louis Lambert International Airport |
| 2026-09-04 01:22 UTC | UAL2807 / UA2807 | — | 6 kt | 349° |
ORD → ORF
ORD
→
ORF
Chicago O'hare International Airport → Norfolk International Airport |
| 2026-09-03 18:26 UTC | UAL8104 / UA8104 | FL1 | 136 kt | 208° | — |
| 2026-09-03 02:32 UTC | UAL324 / UA324 | — | 10 kt | 323° |
ATL → ORD
ATL
→
ORD
Hartsfield/jackson Atlanta International Airport → Chicago O'hare International Airport |
| 2026-09-03 00:02 UTC | UAL2081 / UA2081 | — | 6 kt | 309° |
IAD → ATL
IAD
→
ATL
Washington Dulles International Airport → Hartsfield/jackson Atlanta International Airport |
| 2026-09-02 20:20 UTC | UAL2230 / UA2230 | — | 4 kt | 354° |
OKC → ORD
OKC
→
ORD
Okc Will Rogers International Airport → Chicago O'hare International Airport |
| 2026-09-02 04:12 UTC | UAL1690 / UA1690 | FL1 | 132 kt | 208° | — |
| 2026-09-01 21:04 UTC | UAL2174 / UA2174 | — | 11 kt | 318° |
BNA → EWR
BNA
→
EWR
Nashville International Airport → Newark Liberty International Airport |
| 2026-09-01 16:38 UTC | UAL1719 / UA1719 | — | 12 kt | 335° |
EWR → BNA
EWR
→
BNA
Newark Liberty International Airport → Nashville International Airport |
| 2026-09-01 13:34 UTC | UAL2053 / UA2053 | — | 0 kt | 321° |
ATL → EWR
ATL
→
EWR
Hartsfield/jackson Atlanta International Airport → Newark Liberty International Airport |
| 2026-08-31 22:42 UTC | UAL2645 / UA2645 | — | 6 kt | 298° |
EWR → SAV
EWR
→
SAV
Newark Liberty International Airport → Savannah/hilton Head International Airport |
| 2026-08-31 19:58 UTC | UAL1673 / UA1673 | FL7 | 141 kt | 229° | — |
| 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 14:10 UTC | UAL775 / UA775 | — | 11 kt | 188° |
ORD → STL
ORD
→
STL
Chicago O'hare International Airport → St Louis Lambert International Airport |
| 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 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° |
IAH → MM56
IAH
→
MM56
George Bush Intcntl/houston Airport → MM56 |
| 2026-08-19 15:26 UTC | UAL2821 / UA2821 | FL4 | 133 kt | 270° |
DEN → LAS
DEN
→
LAS
Denver International Airport → Harry Reid International Airport |
| 2026-08-18 22:30 UTC | UAL413 / UA413 | FL972 | 149 kt | 132° | — |
| 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 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 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 |
| 2026-08-11 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 → THP
ORD
→
THP
Chicago O'hare International Airport → Hot Springs County Airport |
| 2026-08-11 12:58 UTC | UAL2684 / UA2684 | — | 16 kt | 90° |
ORD → ATL
ORD
→
ATL
Chicago O'hare International Airport → Hartsfield/jackson Atlanta International Airport |
| 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° | — |
| 2026-08-08 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° |
ORD → LGA
ORD
→
LGA
Chicago O'hare International Airport → Laguardia Airport |
| 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° |
IAD → AUS
IAD
→
AUS
Washington Dulles International Airport → Austin-bergstrom 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 |