| EXPECTED TO ARRIVE IN 9 MINUTES |
 |  |
Departure (UA540 Flight Schedule)
San Diego, United StatesPDT 00:00:00 DAY
Arrival (UA540 Flight Schedule)
CDT 00:00:00 DAY
Flight Radar Checker UA 540
Live Flight Tracker Map
Flight UA540 from San Diego to Chicago is operated by United Airlines. Scheduled time of departure from San Diego Intl is 22:30 PDT and scheduled time of arrival in Chicago Ohare Intl is 04:33 CDT. The duration of the flight is 4 hours 3 minutes.
4.5 out of 5 stars / 12 votes
Flight Finder
from Chicago to San Diego
| Flight | Departure | Arrival |
|---|---|---|
| WN2978 07:50 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
| UA3752 08:00 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| WN3644 08:55 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
| UA3754 09:00 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| UA3751 09:00 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| AA2343 09:14 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| UA2428 09:32 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| AS1470 09:56 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| UA660 11:25 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| WN2979 12:05 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
| WN2118 12:45 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
| AA3134 12:51 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| UA559 15:49 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| AS1447 17:01 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| WN2980 17:15 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
| AA1543 17:29 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| UA2138 18:40 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| AA1861 21:30 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| AS1478 22:27 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| WN4802 22:40 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
| UA1564 22:41 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| AA2994 23:06 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| WN1928 23:15 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
| AA1785 23:19 |
Chicago Ohare Intl (ORD) |
San Diego Intl (SAN) |
| WN4285 23:45 |
Chicago Midway Intl (MDW) |
San Diego Intl (SAN) |
History Flight Information for UA540 from Flight Scanner System
| Date | Flight | Departure Airport | Arrival Airport | Scheduled | Plane | Estimated | ||
|---|---|---|---|---|---|---|---|---|
| Departure | Arrival | Departure | Arrival | |||||
| Fri, 16 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | |||
| Fri, 16 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | |||
| Thu, 15 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 23:06 PDT | 03:54 CDT | |
| Thu, 15 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | |||
| Thu, 15 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 13:04 PDT | 16:52 MDT | |
| Wed, 14 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:43 PDT | 03:51 CDT | |
| Wed, 14 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:17 MDT | 20:20 PDT | |
| Wed, 14 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 12:57 PDT | 16:23 MDT | |
| Tue, 13 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:43 PDT | 03:49 CDT | |
| Tue, 13 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:16 MDT | 20:23 PDT | |
| Tue, 13 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | |||
| Mon, 12 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 23:19 PDT | 04:32 CDT | |
| Mon, 12 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 20:05 MDT | 21:40 PDT | |
| Mon, 12 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 12:45 PDT | 16:22 MDT | |
| Sun, 11 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 23:01 PDT | 04:07 CDT | |
| Sun, 11 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:17 MDT | 20:38 PDT | |
| Sun, 11 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 13:10 PDT | 16:34 MDT | |
| Sat, 10 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 23:00 PDT | 04:14 CDT | |
| Sat, 10 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:18 MDT | 20:27 PDT | |
| Sat, 10 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 15:02 PDT | 18:24 MDT | |
| Fri, 09 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 23:05 PDT | 04:24 CDT | |
| Fri, 09 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:51 MDT | 21:00 PDT | |
| Fri, 09 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 12:58 PDT | 16:12 MDT | |
| Thu, 08 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:47 PDT | 04:28 CDT | |
| Thu, 08 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:51 MDT | 21:12 PDT | |
| Thu, 08 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | |||
| Wed, 07 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:42 PDT | 04:11 CDT | |
| Wed, 07 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:16 MDT | 20:16 PDT | |
| Wed, 07 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 13:00 PDT | 16:09 MDT | |
| Tue, 06 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:30 PDT | 03:58 CDT | |
| Tue, 06 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:25 MDT | 20:23 PDT | |
| Tue, 06 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 12:50 PDT | 16:16 MDT | |
| Mon, 05 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:45 PDT | 04:07 CDT | |
| Mon, 05 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:20 MDT | 20:30 PDT | |
| Mon, 05 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 12:37 PDT | 15:55 MDT | |
| Sun, 04 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:43 PDT | 04:09 CDT | |
| Sun, 04 Oct | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 20:17 MDT | 21:13 PDT | |
| Sun, 04 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 12:35 PDT | 16:01 MDT | |
| Sat, 03 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:39 PDT | 04:01 CDT | |
| Sat, 03 Oct | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:20 MDT | 13:00 PDT | 16:10 MDT | |
| Fri, 02 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | N37434 (Boeing B739) | 22:40 PDT | 04:12 CDT |
| Thu, 01 Oct | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | |||
| Wed, 30 Sep | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:50 PDT | 04:16 CDT | |
| Wed, 30 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:14 MDT | 20:06 PDT | |
| Wed, 30 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:34 PDT | 16:27 MDT | |
| Tue, 29 Sep | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:47 PDT | 04:08 CDT | |
| Tue, 29 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:08 MDT | 20:18 PDT | |
| Tue, 29 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:34 PDT | 16:11 MDT | |
| Mon, 28 Sep | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:45 PDT | 03:52 CDT | |
| Mon, 28 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:47 MDT | 21:13 PDT | |
| Mon, 28 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:05 PDT | 16:39 MDT | |
| Sun, 27 Sep | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 23:04 PDT | 04:20 CDT | |
| Sun, 27 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:20 MDT | 21:05 PDT | |
| Sun, 27 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:20 PDT | 16:54 MDT | |
| Sat, 26 Sep | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:42 PDT | 04:08 CDT | |
| Sat, 26 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | |||
| Sat, 26 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | |||
| Fri, 25 Sep | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:53 PDT | 04:16 CDT | |
| Fri, 25 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | |||
| Fri, 25 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:44 PDT | 17:17 MDT | |
| Thu, 24 Sep | UA540 | San Diego Intl (SAN) | Chicago Ohare Intl (ORD) | 22:30 PDT | 04:33 CDT | 22:57 PDT | 04:17 CDT | |
| Thu, 24 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:10 MDT | 20:39 PDT | 19:47 MDT | 21:21 PDT | |
| Thu, 24 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:49 PDT | 16:36 MDT | |
| Wed, 23 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:10 MDT | 20:28 PDT | |
| Wed, 23 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:56 PDT | 16:27 MDT | |
| Tue, 22 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:25 MDT | 20:23 PDT | |
| Tue, 22 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:47 PDT | 16:37 MDT | 13:38 PDT | 17:10 MDT | |
| Mon, 21 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | |||
| Mon, 21 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | |||
| Sun, 20 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:48 MDT | 21:04 PDT | |
| Sun, 20 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:24 MDT | 13:05 PDT | 16:27 MDT | |
| Sat, 19 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:08 MDT | 20:37 PDT | 19:23 MDT | 20:59 PDT | |
| Sat, 19 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:16 PDT | 16:37 MDT | |
| Fri, 18 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:58 MDT | 21:11 PDT | |
| Fri, 18 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:36 PDT | 17:40 MDT | |
| Thu, 17 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 20:28 MDT | 21:47 PDT | |
| Thu, 17 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:55 PDT | 16:15 MDT | |
| Wed, 16 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | |||
| Wed, 16 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:43 PDT | 16:17 MDT | |
| Tue, 15 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:08 MDT | 20:45 PDT | |
| Tue, 15 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:47 PDT | 16:37 MDT | 13:23 PDT | 16:55 MDT | |
| Mon, 14 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 20:15 MDT | 21:12 PDT | |
| Mon, 14 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:25 PDT | 17:04 MDT | |
| Sun, 13 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 20:41 MDT | 21:53 PDT | |
| Sun, 13 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | |||
| Sat, 12 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:08 MDT | 20:37 PDT | |||
| Sat, 12 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | |||
| Fri, 11 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 20:01 MDT | 21:12 PDT | |
| Fri, 11 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:43 PDT | 15:54 MDT | |
| Thu, 10 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:20 MDT | 20:32 PDT | |
| Thu, 10 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:00 PDT | 16:19 MDT | |
| Wed, 09 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:10 MDT | 20:07 PDT | |
| Wed, 09 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:50 PDT | 16:21 MDT | |
| Tue, 08 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:23 MDT | 20:27 PDT | |
| Tue, 08 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:47 PDT | 16:37 MDT | 13:15 PDT | 16:50 MDT | |
| Mon, 07 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 20:36 MDT | 22:15 PDT | |
| Mon, 07 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:37 PDT | 16:15 MDT | |
| Sun, 06 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:11 MDT | 20:25 PDT | |
| Sun, 06 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | |||
| Sat, 05 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:14 MDT | 20:18 PDT | |
| Sat, 05 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | |||
| Fri, 04 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 21:59 MDT | 23:09 PDT | |
| Fri, 04 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 12:55 PDT | 16:21 MDT | |
| Thu, 03 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 20:28 MDT | 21:24 PDT | |
| Thu, 03 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:01 PDT | 16:11 MDT | |
| Wed, 02 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:05 MDT | 20:31 PDT | |
| Wed, 02 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:35 PDT | 16:25 MDT | 13:19 PDT | 16:31 MDT | |
| Tue, 01 Sep | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:07 MDT | 20:19 PDT | |
| Tue, 01 Sep | UA540 | San Francisco Intl (SFO) | Denver Intl (DEN) | 12:05 PDT | 15:54 MDT | |||
| Mon, 31 Aug | UA540 | Denver Intl (DEN) | San Diego Intl (SAN) | 19:05 MDT | 20:34 PDT | 19:28 MDT | 21:13 PDT | |
Disclaimer for UA540 Flight Radar Data
Flight UA540 from San Diego Intl to Chicago Ohare 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 UA540 data.
