| ARRIVED 11 HOUR 11 MINUTES AGO |
 |  |
Departure (UA1439 Flight Schedule)
CDT 00:00:00 DAY
Arrival (UA1439 Flight Schedule)
Dallas Fort Worth Intl (DFW/KDFW)
Dallas-Fort Worth, United States
17:51 CDT
Thu 17-Sep-2026
| LATE 8 hour 12 min |
CDT 00:00:00 DAY
Flight Radar Checker UA 1439
Live Flight Tracker Map
Flight UA1439 from Houston to Dallas-Fort Worth is operated by United Airlines. Scheduled time of departure from George Bush Intercontinental is 16:20 CDT and scheduled time of arrival in Dallas Fort Worth Intl is 17:51 CDT. The duration of the flight is 1 hour 31 minutes.
Flight Finder
from Dallas-Fort Worth to Houston
| Flight | Departure | Arrival |
|---|---|---|
| UA2260 06:23 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA3598 08:28 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA2670 08:28 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA5017 08:33 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA3940 09:01 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA4036 09:03 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA1407 09:33 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA866 10:40 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA3909 10:55 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA1586 11:01 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA3829 11:33 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA6413 11:44 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA1397 13:19 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA539 13:20 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA4027 13:23 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA5253 13:23 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA4735 13:23 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA6186 13:25 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA3777 13:32 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA5576 15:25 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA5177 15:26 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA1393 15:31 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA445 15:35 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA5272 15:40 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA4030 15:40 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA4015 15:43 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| UA2682 17:19 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA6252 17:44 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA4222 17:59 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA2438 18:04 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA5215 18:11 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA5299 18:25 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA1386 18:44 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| UA1609 19:08 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA3908 19:32 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA6382 19:44 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA3391 19:48 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA5465 19:51 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA1392 20:40 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| CV7 21:11 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| CV6714 21:30 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| CV6713 21:30 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA2209 22:20 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA3864 23:50 |
Dallas Fort Worth Intl (DFW) |
William P Hobby (HOU) |
| AA3023 23:59 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
| AA1050 23:59 |
Dallas Fort Worth Intl (DFW) |
George Bush Intercontinental (IAH) |
History Flight Information for UA1439 from Flight Scanner System
| Date | Flight | Departure Airport | Arrival Airport | Scheduled | Plane | Estimated | ||
|---|---|---|---|---|---|---|---|---|
| Departure | Arrival | Departure | Arrival | |||||
| Fri, 18 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | |||
| Thu, 17 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N844UA (Airbus A319) | 16:34 CDT | 20:45 CDT |
| Wed, 16 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N802UA (Airbus A319) | 16:30 CDT | 17:13 CDT |
| Tue, 15 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N13750 (Boeing B737) | 16:36 CDT | 17:19 CDT |
| Mon, 14 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N76265 (Boeing B738) | 17:08 CDT | 17:50 CDT |
| Sun, 13 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N826UA (Airbus A319) | 16:40 CDT | 17:26 CDT |
| Sat, 12 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N54241 (Boeing B738) | 17:44 CDT | 18:28 CDT |
| Fri, 11 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N18220 (Boeing B738) | 17:17 CDT | 17:59 CDT |
| Thu, 10 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | |||
| Wed, 09 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N11206 (Boeing B738) | 16:35 CDT | 17:31 CDT |
| Tue, 08 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N54711 (Boeing B737) | 16:32 CDT | 17:31 CDT |
| Mon, 07 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N818UA (Airbus A319) | 16:40 CDT | 20:54 CDT |
| Mon, 07 Sep | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | |||
| Sun, 06 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N26226 (Boeing B738) | 16:27 CDT | 17:10 CDT |
| Sun, 06 Sep | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:43 EDT | 14:44 CDT | |
| Sat, 05 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | 16:57 CDT | 17:37 CDT | |
| Fri, 04 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N891UA (Airbus A319) | 17:23 CDT | 18:04 CDT |
| Fri, 04 Sep | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 13:21 EDT | 15:12 CDT | |
| Thu, 03 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N890UA (Airbus A319) | 17:04 CDT | 17:48 CDT |
| Thu, 03 Sep | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 13:22 EDT | 15:34 CDT | |
| Wed, 02 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N840UA (Airbus A319) | 16:46 CDT | 17:43 CDT |
| Wed, 02 Sep | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:49 EDT | 15:02 CDT | |
| Tue, 01 Sep | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 17:03 CDT | 17:46 CDT | |
| Tue, 01 Sep | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | |||
| Mon, 31 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 16:38 CDT | 17:22 CDT | |
| Mon, 31 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:34 EDT | 14:29 CDT | |
| Sun, 30 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 16:39 CDT | 17:23 CDT | |
| Sun, 30 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:47 EDT | 14:41 CDT | |
| Sat, 29 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | 16:29 CDT | 17:16 CDT | |
| Fri, 28 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | |||
| Fri, 28 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:36 EDT | 14:52 CDT | |
| Thu, 27 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 17:03 CDT | 17:53 CDT | |
| Thu, 27 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 13:17 EDT | 15:26 CDT | |
| Wed, 26 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 17:05 CDT | 17:43 CDT | |
| Wed, 26 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:40 EDT | 14:51 CDT | |
| Tue, 25 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N4888U ( A319) | 16:32 CDT | 17:19 CDT |
| Tue, 25 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | |||
| Mon, 24 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 16:43 CDT | 21:00 CDT | |
| Mon, 24 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:36 EDT | 14:47 CDT | |
| Sun, 23 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N854UA (Airbus A319) | 16:42 CDT | 17:23 CDT |
| Sun, 23 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:52 EDT | 14:55 CDT | |
| Sat, 22 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | N39423 (Boeing B739) | 16:38 CDT | 17:24 CDT |
| Fri, 21 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N806UA (Airbus A319) | 16:33 CDT | 17:19 CDT |
| Fri, 21 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:45 EDT | 15:00 CDT | |
| Thu, 20 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N821UA (Airbus A319) | 16:34 CDT | 17:20 CDT |
| Thu, 20 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 13:00 EDT | 15:07 CDT | |
| Wed, 19 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N802UA (Airbus A319) | 16:49 CDT | 17:32 CDT |
| Wed, 19 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:43 EDT | 14:44 CDT | |
| Tue, 18 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 16:36 CDT | 17:19 CDT | |
| Tue, 18 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:52 EDT | 14:55 CDT | |
| Mon, 17 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N845UA (Airbus A319) | 16:40 CDT | 17:25 CDT |
| Mon, 17 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:50 EDT | 14:49 CDT | |
| Sun, 16 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | 16:43 CDT | 17:26 CDT | |
| Sun, 16 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:46 EDT | 14:53 CDT | |
| Sat, 15 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:45 CDT | 16:28 CDT | 17:12 CDT | |
| Fri, 14 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N846UA (Airbus A319) | 16:54 CDT | 17:40 CDT |
| Fri, 14 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | |||
| Thu, 13 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N892UA (Airbus A319) | 16:45 CDT | 17:29 CDT |
| Thu, 13 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | |||
| Wed, 12 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N834UA (Airbus A319) | 16:58 CDT | 18:10 CDT |
| Wed, 12 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 13:01 EDT | 15:05 CDT | |
| Tue, 11 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:51 CDT | N801UA (Airbus A319) | 16:32 CDT | 19:09 CDT |
| Tue, 11 Aug | UA1439 | La Guardia (LGA) | George Bush Intercontinental (IAH) | 12:29 EDT | 15:26 CDT | 12:40 EDT | 14:56 CDT | |
| Mon, 10 Aug | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | N801UA (Airbus A319) | 20:31 CDT | 00:37 EDT |
| Mon, 10 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N824UA (Airbus A319) | 17:13 CDT | 17:53 CDT |
| Sun, 09 Aug | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | N851UA (Airbus A319) | 21:12 CDT | 01:01 EDT |
| Sun, 09 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N821UA (Airbus A319) | 16:54 CDT | 17:42 CDT |
| Sat, 08 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N819UA (Airbus A319) | 16:32 CDT | 17:17 CDT |
| Fri, 07 Aug | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | |||
| Fri, 07 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N802UA (Airbus A319) | 16:43 CDT | 17:26 CDT |
| Thu, 06 Aug | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | N820UA (Airbus A319) | 21:35 CDT | 01:40 EDT |
| Thu, 06 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N854UA (Airbus A319) | 16:42 CDT | 17:28 CDT |
| Wed, 05 Aug | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | 20:28 CDT | 01:14 EDT | |
| Wed, 05 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N822UA (Airbus A319) | 16:35 CDT | 17:20 CDT |
| Tue, 04 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N843UA (Airbus A319) | 16:36 CDT | 17:19 CDT |
| Mon, 03 Aug | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | N829UA (Airbus A319) | 20:52 CDT | 00:59 EDT |
| Mon, 03 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N818UA (Airbus A319) | 17:51 CDT | 18:31 CDT |
| Sun, 02 Aug | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | |||
| Sun, 02 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N803UA (Airbus A319) | 16:56 CDT | 17:37 CDT |
| Sat, 01 Aug | UA1439 | George Bush Intercontinental (IAH) | Dallas Fort Worth Intl (DFW) | 16:20 CDT | 17:46 CDT | N840UA (Airbus A319) | 16:43 CDT | 17:23 CDT |
| Fri, 31 Jul | UA1439 | Dallas Fort Worth Intl (DFW) | Newark Liberty Intl (EWR) | 20:27 CDT | 00:59 EDT | 20:26 CDT | 00:18 EDT | |
Disclaimer for UA1439 Flight Radar Data
Flight UA1439 from George Bush Intercontinental to Dallas Fort Worth Intl data is collected from different sources. The data is for informational purposes only and PlaneMapper is not responsible for the accuracy and reliability of flight UA1439 data.
