the record · airliner · Boeing 737-9 · flight page

N37513 flying as UAL451

Climbing through 38,650 feet, 18 miles north of Mesa Del Rey Airport, heading southeast at 437 knots (503 mph).

Position from the receiver network, 66 seconds ago; local time 9:29 pm PDT (04:29 UTC). This page checks for a newer position every half minute while it is open.

Took off SFOSan Francisco International, San Francisco, CA Today at 9:08 pm

Last heard …still in the air, or beyond the receivers' hearing Today at 9:28 pm

Length: 20 min
Distance: 110 nm (127 miles)
Top altitude: 38,650 ft
Fastest: 448 knots (516 mph)
Positions heard: 11

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 9:08 pm to 9:28 pm	San Francisco International SFO	still in the air, or out of the network's hearing	20 min	110 nm	38,650 ft	448 kt
Today at 4:13 pm to 7:15 pm	in the air when first heard	San Francisco International SFO	3 h 1 min	1,129 nm	34,000 ft	406 kt
October 20 at 5:08 pm to 5:55 pm	in the air when first heard	still in the air, or out of the network's hearing	46 min	331 nm	34,000 ft	434 kt
October 18 at 1:33 pm to 1:54 pm	Newark Liberty International EWR	still in the air, or out of the network's hearing	20 min	113 nm	31,625 ft	478 kt
October 18 at 9:14 am to 9:30 am	President Donald J Trump International DJT	still in the air, or out of the network's hearing	15 min	62 nm	20,575 ft	394 kt
October 18 at 5:38 am to 6:13 am	in the air when first heard	still in the air, or out of the network's hearing	34 min	281 nm	34,000 ft	492 kt
October 18 at 1:43 am to 2:05 am	in the air when first heard	still in the air, or out of the network's hearing	21 min	121 nm	35,000 ft	448 kt
October 17 at 11:46 pm to 12:50 am	in the air when first heard	still in the air, or out of the network's hearing	1 h 3 min	509 nm	35,000 ft	491 kt
October 17 at 6:17 pm to 7:00 pm	in the air when first heard	still in the air, or out of the network's hearing	42 min	312 nm	34,000 ft	455 kt
October 17 at 5:24 pm to 5:43 pm	in the air when first heard	still in the air, or out of the network's hearing	18 min	147 nm	34,000 ft	481 kt
October 17 at 5:03 am to 6:00 am	Newark Liberty International EWR	still in the air, or out of the network's hearing	57 min	252 nm	31,000 ft	447 kt
October 16 at 7:16 pm to 8:22 pm	in the air when first heard	Linden Airport LDJ	1 h 6 min	495 nm	37,000 ft	531 kt
October 16 at 5:48 pm to 6:35 pm	in the air when first heard	still in the air, or out of the network's hearing	47 min	385 nm	35,000 ft	508 kt
October 16 at 1:21 pm to 2:12 pm	in the air when first heard	still in the air, or out of the network's hearing	51 min	351 nm	32,000 ft	436 kt
October 16 at 11:05 am to 12:46 pm	Newark Liberty International EWR	still in the air, or out of the network's hearing	1 h 40 min	589 nm	34,025 ft	414 kt
October 16 at 8:07 am to 9:43 am	in the air when first heard	Newark Liberty International EWR	1 h 36 min	632 nm	35,000 ft	535 kt
October 16 at 4:43 am to 6:17 am	Newark Liberty International EWR	still in the air, or out of the network's hearing	1 h 34 min	630 nm	32,000 ft	443 kt
October 15 at 8:36 pm to 9:59 pm	in the air when first heard	Newark Liberty International EWR	1 h 22 min	539 nm	35,000 ft	498 kt
October 15 at 7:46 pm to 8:05 pm	in the air when first heard	still in the air, or out of the network's hearing	18 min	148 nm	33,000 ft	480 kt
October 15 at 7:06 pm to 7:24 pm	in the air when first heard	still in the air, or out of the network's hearing	18 min	140 nm	33,000 ft	467 kt
October 15 at 3:49 pm to 4:54 pm	in the air when first heard	George Bush Intcntl/Houston Airport IAH	1 h 4 min	425 nm	34,000 ft	486 kt
October 15 at 2:01 pm to 3:25 pm	in the air when first heard	still in the air, or out of the network's hearing	1 h 23 min	604 nm	34,000 ft	462 kt
October 15 at 11:40 am to 12:27 pm	in the air when first heard	Linden Airport LDJ	47 min	303 nm	37,000 ft	475 kt
October 15 at 10:09 am to 11:11 am	in the air when first heard	still in the air, or out of the network's hearing	1 h 1 min	462 nm	37,000 ft	485 kt
October 15 at 5:28 am to 6:39 am	in the air when first heard	still in the air, or out of the network's hearing	1 h 10 min	474 nm	34,000 ft	482 kt
October 15 at 4:15 am to 4:53 am	Newark Liberty International EWR	still in the air, or out of the network's hearing	37 min	206 nm	34,000 ft	463 kt
October 15 at 1:06 am to 1:54 am	in the air when first heard	still in the air, or out of the network's hearing	47 min	389 nm	35,000 ft	545 kt
October 15 at 12:09 am to 12:28 am	in the air when first heard	still in the air, or out of the network's hearing	18 min	168 nm	35,000 ft	542 kt
October 14 at 11:03 pm to 11:41 pm	Denver International DEN	still in the air, or out of the network's hearing	37 min	233 nm	35,000 ft	527 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 737-9, built 2019
Kind: Airliner, 48 seats
Operator: United Airlines INC
Registered in: Chicago, IL
Transponder code: A448F5

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