the record · airliner · Boeing 737-824 · flight page

N12221 flying as UAL1711

Descending through 2,025 feet, 7 miles east of George Bush Intcntl/Houston Airport, heading west at 200 knots (230 mph).

Position from the receiver network, 12 seconds ago; local time 3:56 pm CST (21:56 UTC). This page checks for a newer position every half minute while it is open.

Took off LASHarry Reid International, Las Vegas, NV Today at 1:29 pm

Last heard …still in the air, or beyond the receivers' hearing Today at 3:56 pm

Length: 2 h 27 min
Distance: 1,114 nm (1,282 miles)
Top altitude: 29,025 ft
Fastest: 511 knots (588 mph)
Positions heard: 55

This flight is the one in progress (or the last one heard, if the aircraft flew beyond the receivers). Times are local to where the aircraft was.

Line colour: altitude Low 10,000 ft 25,000 ft 40,000 ft Start End

Altitude and speed through the flight

Move along the graph to read the altitude and speed at any moment.

Flights in the last 14 days

When	From	To	Length	Distance	Top altitude	Fastest
Today at 1:29 pm to 3:56 pm	Harry Reid International LAS	still in the air, or out of the network's hearing	2 h 27 min	1,114 nm	29,025 ft	511 kt
Today at 11:05 am to 12:07 pm	in the air when first heard	Harry Reid International LAS	1 h 1 min	357 nm	30,025 ft	434 kt
Today at 9:24 am to 10:26 am	in the air when first heard	still in the air, or out of the network's hearing	1 h 1 min	439 nm	30,025 ft	461 kt
Today at 7:25 am to 8:04 am	Austin-Bergstrom International AUS	George Bush Intcntl/Houston Airport IAH	38 min	149 nm	19,025 ft	469 kt
Yesterday at 10:21 pm to 10:50 pm	in the air when first heard	Austin-Bergstrom International AUS	28 min	130 nm	15,875 ft	353 kt
Yesterday at 7:01 pm to 8:21 pm	in the air when first heard	George Bush Intcntl/Houston Airport IAH	1 h 20 min	480 nm	38,000 ft	418 kt
Yesterday at 4:56 pm to 6:39 pm	Laguardia Airport LGA	still in the air, or out of the network's hearing	1 h 42 min	650 nm	38,000 ft	418 kt
Yesterday at 3:04 pm to 3:24 pm	in the air when first heard	Laguardia Airport LGA	20 min	97 nm	12,575 ft	384 kt
Yesterday at 12:28 pm to 2:43 pm	in the air when first heard	still in the air, or out of the network's hearing	2 h 15 min	1,059 nm	37,000 ft	527 kt
Yesterday at 8:21 am to 10:23 am	Tampa International TPA	George Bush Intcntl/Houston Airport IAH	2 h 2 min	751 nm	40,000 ft	444 kt
Yesterday at 3:29 am to 6:47 am	in the air when first heard	Tampa International TPA	3 h 17 min	1,624 nm	39,025 ft	563 kt
Yesterday at 2:55 am to 3:05 am	in the air when first heard	still in the air, or out of the network's hearing	10 min	65 nm	26,375 ft	506 kt
Yesterday at 12:42 am to 1:21 am	San Francisco International SFO	still in the air, or out of the network's hearing	38 min	250 nm	39,000 ft	471 kt
Friday at 10:25 pm to 11:20 pm	in the air when first heard	San Francisco International SFO	55 min	312 nm	28,000 ft	458 kt
Friday at 6:42 pm to 7:19 pm	San Francisco International SFO	still in the air, or out of the network's hearing	37 min	244 nm	35,000 ft	475 kt
Friday at 4:18 pm to 5:08 pm	Santa Barbara Municipal SBA	San Francisco International SFO	50 min	250 nm	28,000 ft	435 kt
Friday at 2:27 pm to 2:39 pm	in the air when first heard	Santa Barbara Municipal SBA	11 min	40 nm	10,025 ft	278 kt
Friday at 12:26 pm to 1:56 pm	Denver International DEN	still in the air, or out of the network's hearing	1 h 30 min	593 nm	32,000 ft	429 kt
Friday at 9:16 am to 11:09 am	Dallas-Fort Worth International DFW	Denver International DEN	1 h 52 min	599 nm	30,000 ft	439 kt
Thursday at 7:27 pm to 8:58 pm	Denver International DEN	Dallas-Fort Worth International DFW	1 h 30 min	579 nm	37,000 ft	459 kt
Thursday at 4:01 pm to 5:27 pm	in the air when first heard	Denver International DEN	1 h 26 min	611 nm	37,000 ft	481 kt
Thursday at 3:21 pm to 3:31 pm	Santa Barbara Municipal SBA	still in the air, or out of the network's hearing	10 min	10 nm	7,000 ft	274 kt
Thursday at 1:12 pm to 1:59 pm	San Francisco International SFO	Santa Barbara Municipal SBA	46 min	261 nm	27,000 ft	453 kt
Thursday at 10:44 am to 11:42 am	in the air when first heard	San Francisco International SFO	58 min	324 nm	36,000 ft	439 kt
Wednesday at 6:49 pm to 7:32 pm	San Francisco International SFO	still in the air, or out of the network's hearing	43 min	253 nm	37,000 ft	456 kt
Wednesday at 9:56 am to 10:19 am	in the air when first heard	Denver International DEN	22 min	114 nm	30,000 ft	385 kt
Tuesday at 7:14 pm to 7:56 pm	Denver International DEN	still in the air, or out of the network's hearing	41 min	289 nm	37,000 ft	462 kt
Monday at 7:41 am to 8:35 am	in the air when first heard	still in the air, or out of the network's hearing	54 min	359 nm	36,000 ft	412 kt
Sunday at 7:01 pm to 7:32 pm	in the air when first heard	still in the air, or out of the network's hearing	30 min	239 nm	37,000 ft	496 kt
October 22 at 7:07 pm to 7:26 pm	in the air when first heard	Monterey Regional MRY	18 min	85 nm	25,450 ft	414 kt

Show the last 56 days · A flight is a run of positions with no gap longer than twenty minutes; an airport is named when the aircraft was low and within five miles of it at that end.

Positions from the adsb.lol community network (open data). A distance is the sum of the straight lines between the positions heard, so it is a little short of the true track. Positions are kept in full for 7 days and at one point every five minutes after that, for 180 days. Map: OpenFreeMap, OpenMapTiles, OpenStreetMap contributors. For understanding where an aircraft went, not for flying.

The aircraft

Aircraft: Boeing 737-824, built 1998
Kind: Airliner, 149 seats
Operator: United Airlines INC
Registered in: Chicago, IL
Transponder code: A05DD8

The full register record, with its history and connections. Find it on the live map and follow it with its trail.