Aircraft N21723 Data
3
aircraft records found
N21723
1999 Boeing 737-724, c/n 28790
Latest photos of N21723
MarkKalfas
@ KORD
Mark Kalfas
@ KORD
Mark Kalfas
@ KORD
Mark Kalfas
@ KORD
Recent Routes
NO LIVE DATA
United Airlines
| Time | Callsign | FL | Speed | Heading | Route |
|---|---|---|---|---|---|
| 2026-08-30 05:36 UTC | UAL3880 / UA3880 | FL1 | 134 kt | 267° | — |
| 2026-08-30 01:54 UTC | UAL1409 / UA1409 | — | 3 kt | 273° | — |
| 2026-08-29 22:44 UTC | UAL2315 / UA2315 | FL53 | 252 kt | 253° | — |
| 2026-08-29 19:02 UTC | UAL661 / UA661 | — | 5 kt | 276° |
EWR → ORD
EWR
→
ORD
Newark Liberty International Airport → Chicago O'hare International Airport |
| 2026-08-29 04:38 UTC | UAL326 / UA326 | FL3 | 134 kt | 208° | — |
| 2026-08-28 23:44 UTC | UAL1785 / UA1785 | FL3 | 136 kt | 270° | — |
| 2026-08-28 19:34 UTC | UAL752 / UA752 | — | 13 kt | 354° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-08-28 16:06 UTC | UAL1554 / UA1554 | FL7 | 146 kt | 270° |
ATL → ORD
ATL
→
ORD
Hartsfield/jackson Atlanta International Airport → Chicago O'hare International Airport |
| 2026-08-28 03:00 UTC | UAL2770 / UA2770 | — | 1 kt | 180° |
ORD → ATL
ORD
→
ATL
Chicago O'hare International Airport → Hartsfield/jackson Atlanta International Airport |
| 2026-08-28 00:02 UTC | UAL1738 / UA1738 | — | 10 kt | 90° | — |
| 2026-08-27 21:00 UTC | UAL1651 / UA1651 | FL25 | 140 kt | 13° | — |
| 2026-08-27 16:16 UTC | UAL2032 / UA2032 | — | 24 kt | 90° | — |
| 2026-08-27 00:28 UTC | UAL378 / UA378 | FL351 | 419 kt | 278° | — |
| 2026-08-26 20:02 UTC | UAL1888 / UA1888 | — | 3 kt | 236° |
DCA → ORD
DCA
→
ORD
Ronald Reagan Washington Ntl Airport → Chicago O'hare International Airport |
| 2026-08-26 16:56 UTC | UAL728 / UA728 | — | 5 kt | 248° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-08-26 14:22 UTC | UAL1332 / UA1332 | — | 3 kt | 323° | — |
| 2026-08-26 00:50 UTC | UAL1477 / UA1477 | FL10 | 139 kt | 132° | — |
| 2026-08-25 22:28 UTC | UAL2044 / UA2044 | FL5 | 148 kt | 270° | — |
| 2026-08-25 18:34 UTC | UAL1383 / UA1383 | FL1 | 129 kt | 208° | — |
| 2026-08-25 12:46 UTC | UAL2205 / UA2205 | FL5 | 129 kt | 270° | — |
| 2026-08-25 03:10 UTC | UAL2086 / UA2086 | FL8 | 137 kt | 274° | — |
| 2026-08-24 23:40 UTC | UAL1444 / UA1444 | FL5 | 152 kt | 270° | — |
| 2026-08-24 21:28 UTC | UAL2738 / UA2738 | — | 13 kt | 107° | — |
| 2026-08-24 18:02 UTC | UAL2190 / UA2190 | FL5 | 146 kt | 270° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-08-24 13:34 UTC | UAL1077 / UA1077 | — | 7 kt | 338° |
ORD → DCA
ORD
→
DCA
Chicago O'hare International Airport → Ronald Reagan Washington Ntl Airport |
| 2026-08-24 02:38 UTC | UAL324 / UA324 | — | 16 kt | 290° |
ATL → ORD
ATL
→
ORD
Hartsfield/jackson Atlanta International Airport → Chicago O'hare International Airport |
| 2026-08-23 23:20 UTC | UAL1848 / UA1848 | — | 8 kt | 270° |
EWR → ATL
EWR
→
ATL
Newark Liberty International Airport → Hartsfield/jackson Atlanta International Airport |
| 2026-08-23 19:40 UTC | A6Z F | — | 4 kt | 267° | — |
| 2026-08-23 19:34 UTC | UAL1548 / UA1548 | — | 10 kt | 295° | — |
| 2026-08-22 20:20 UTC | UAL2427 / UA2427 | FL9 | 133 kt | 271° | — |
| 2026-08-22 18:36 UTC | UAL2751 / UA2751 | FL10 | 143 kt | 261° |
YUL → ORD
YUL
→
ORD
Montreal / Pierre Elliott Trudeau International Airport → Chicago O'hare International Airport |
| 2026-08-21 17:16 UTC | UAL728T / UA728T | — | 19 kt | 174° | — |
| 2026-08-21 14:26 UTC | UAL2465 / UA2465 | — | 1 kt | 180° |
BNA → ORD
BNA
→
ORD
Nashville International Airport → Chicago O'hare International Airport |
| 2026-08-21 02:44 UTC | UAL335 / UA335 | — | 21 kt | 17° |
ORD → BNA
ORD
→
BNA
Chicago O'hare International Airport → Nashville International Airport |
| 2026-08-20 23:44 UTC | UAL1842 / UA1842 | — | 15 kt | 3° |
ORD → FSD
ORD
→
FSD
Chicago O'hare International Airport → Joe Foss Fld Airport |
| 2026-08-20 18:58 UTC | UAL1952 / UA1952 | FL11 | 159 kt | 147° | — |
| 2026-08-20 15:56 UTC | UAL1181 / UA1181 | — | 0 kt | 11° | — |
| 2026-08-20 13:30 UTC | UAL2335 / UA2335 | FL8 | 140 kt | 50° | — |
| 2026-08-20 11:14 UTC | UAL1252 / UA1252 | — | 6 kt | 343° |
IAD → ORD
IAD
→
ORD
Washington Dulles International Airport → Chicago O'hare International Airport |
| 2026-08-20 03:24 UTC | UAL2131 / UA2131 | — | 25 kt | 62° |
ATL → IAD
ATL
→
IAD
Hartsfield/jackson Atlanta International Airport → Washington Dulles International Airport |
| 2026-08-20 01:02 UTC | UAL632 / UA632 | — | 6 kt | 270° |
IAD → BDL
IAD
→
BDL
Washington Dulles International Airport → Bradley International Airport |
| 2026-08-18 23:28 UTC | UAL2081 / UA2081 | — | 20 kt | 0° |
IAD → ATL
IAD
→
ATL
Washington Dulles International Airport → Hartsfield/jackson Atlanta International Airport |
| 2026-08-18 20:12 UTC | UAL780 / UA780 | — | 17 kt | 90° |
IAD → PDX
IAD
→
PDX
Washington Dulles International Airport → Portland International Airport |
| 2026-08-18 17:50 UTC | UAL1709 / UA1709 | FL8 | 134 kt | 229° |
BNA → IAD
BNA
→
IAD
Nashville International Airport → Washington Dulles International Airport |
| 2026-08-18 02:00 UTC | UAL1460 / UA1460 | — | 1 kt | 0° |
IAD → ORF
IAD
→
ORF
Washington Dulles International Airport → Norfolk International Airport |
| 2026-08-17 23:24 UTC | UAL2454 / UA2454 | — | 18 kt | 42° |
EWR → BNA
EWR
→
BNA
Newark Liberty International Airport → Nashville International Airport |
| 2026-08-16 22:12 UTC | UAL2682 / UA2682 | FL4 | 153 kt | 270° | — |
| 2026-08-16 20:06 UTC | UAL1564 / UA1564 | — | 6 kt | 270° |
DFW → ORD
DFW
→
ORD
Dallas-fort Worth International Airport → Chicago O'hare International Airport |
| 2026-08-16 15:46 UTC | UAL1858 / UA1858 | — | 1 kt | 180° | — |
| 2026-08-16 12:42 UTC | UAL2355 / UA2355 | FL4 | 141 kt | 327° | — |
| 2026-08-16 01:20 UTC | UAL2807 / UA2807 | — | 3 kt | 186° |
SNA → EWR
SNA
→
EWR
John Wayne/orange County Airport → Newark Liberty International Airport |
| 2026-08-15 19:04 UTC | UAL1304 / UA1304 | FL0 | 136 kt | 208° |
YYZ → ORD
YYZ
→
ORD
Lester B Pearson International Airport → Chicago O'hare International Airport |
| 2026-08-15 13:30 UTC | UAL775 / UA775 | — | 13 kt | 23° |
ORD → STL
ORD
→
STL
Chicago O'hare International Airport → St Louis Lambert International Airport |
| 2026-08-14 01:16 UTC | UAL2652 / UA2652 | FL8 | 148 kt | 230° | — |
| 2026-08-13 22:08 UTC | UAL2458 / UA2458 | — | 12 kt | 90° |
ORD → LGA
ORD
→
LGA
Chicago O'hare International Airport → Laguardia Airport |
| 2026-08-13 17:02 UTC | UAL2176 / UA2176 | FL377 | 413 kt | 274° |
ORD → THP
ORD
→
THP
Chicago O'hare International Airport → Hot Springs County Airport |
| 2026-08-12 01:18 UTC | UAL1240 / UA1240 | — | 1 kt | 11° |
DFW → IAD
DFW
→
IAD
Dallas-fort Worth International Airport → Washington Dulles International Airport |
| 2026-08-11 21:12 UTC | UAL1388 / UA1388 | — | 6 kt | 270° | — |
| 2026-08-11 07:28 UTC | UAL1316 / UA1316 | — | 8 kt | 233° | — |
| 2026-08-10 22:04 UTC | UAL2844 / UA2844 | FL16 | 142 kt | 132° |
MSY → ORD
MSY
→
ORD
Louis Armstrong New Orleans International Airport → Chicago O'hare International Airport |
| 2026-08-10 18:20 UTC | UAL374 / UA374 | — | 23 kt | 90° | — |
| 2026-08-10 15:04 UTC | UAL382 / UA382 | — | 10 kt | 225° | — |
| 2026-08-10 12:14 UTC | UAL3909 / UA3909 | — | 17 kt | 197° | — |
| 2026-08-10 04:32 UTC | UAL654 / UA654 | FL8 | 151 kt | 252° |
DCA → ORD
DCA
→
ORD
Ronald Reagan Washington Ntl Airport → Chicago O'hare International Airport |
| 2026-08-09 05:10 UTC | UAL2063 / UA2063 | — | 21 kt | 17° | — |
| 2026-08-09 03:04 UTC | UAL1884 / UA1884 | — | 3 kt | 222° |
ORD → MSY
ORD
→
MSY
Chicago O'hare International Airport → Louis Armstrong New Orleans International Airport |
| 2026-08-08 23:58 UTC | UAL1928 / UA1928 | — | 17 kt | 17° |
DEN → ORD
DEN
→
ORD
Denver International Airport → Chicago O'hare International Airport |
| 2026-08-08 17:46 UTC | UAL592 / UA592 | — | 13 kt | 270° | — |
| 2026-08-08 13:58 UTC | UAL2795 / UA2795 | FL7 | 145 kt | 147° | — |
| 2026-08-07 17:00 UTC | UAL1502 / UA1502 | FL8 | 135 kt | 270° |
SLC → ORD
SLC
→
ORD
Salt Lake City International Airport → Chicago O'hare International Airport |
| 2026-08-07 04:20 UTC | UAL1710 / UA1710 | — | 17 kt | 264° |
KLDR → ORD
KLDR
→
ORD
Uscg San Diego Heliport → Chicago O'hare 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) | 28790 |
| 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 | N21723 |
| Mode S (ICAO24) Code | a1d63d |
| Certification Class | Standard |
| Certification Issued | 1999-04-23 |
| Air Worthiness Test | 1999-04-21 |
| Last Action Taken | 2025-11-03 |
| Current Status | Valid |
Owner
| Registration Type | Corporation |
| Owner | UNITED AIRLINES INC |
| Address |
233 S Wacker Dr Chicago, IL 606067147 United States |
| Region | Great Lakes |
N21723
1940 Heideman-bowlus B-3, c/n 3
Airframe Info
| Manufacturer | Heideman-bowlus |
| Model | B-3 Search all Heideman-bowlus B-3 |
| Year built | 1940 |
| Construction Number (C/N) | 3 |
| Number of Seats | 2 |
Aircraft
| Registration Number | N21723 |
| Mode S (ICAO24) Code | a1d63d |
| Certification Issued | 1958-12-16 |
| Current Status | Deregistered |
| Registration Cancel Date | 1967-06-29 |
Owner
| Registration Type | Individual |
| Address |
El Cajon, CA 92021 United States |
| Region | Western-Pacific |
N21723
Piper PA-31-350, c/n 318152028
Airframe Info
| Manufacturer | Piper |
| Model | PA-31-350 Search all Piper PA-31-350 |
| Construction Number (C/N) | 318152028 |
| Number of Seats | 8 |
| Number of Engines | 2 |
Aircraft
| Registration Number | N21723 |
| Mode S (ICAO24) Code | a1d63d |
| Certification Issued | 1994-08-02 |
| Last Action Taken | 1994-08-03 |
| Current Status | Deregistered |
| Registration Cancel Date | 1994-12-02 |
Owner
| Registration Type | Corporation |
| Owner | SPECIAL AIR SERVICE CORP |
| Address |
Miami, FL 33176 United States |