Tracked flight number

UA166

UAL166United AirlinesAug 22 – Sep 24, 2026

Data through Sep 24, 2026 UTC

Analysis window

Aug 22 – Sep 24, 2026

Every derived statistic, daily trend, route, tail number assignment, flight observation, and mapped path below uses this flight-date window.

Global rankings

Among tracked flight numbers · Aug 22 – Sep 24, 2026

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Tracked flights

#99,766of 163,734 · tied

Tracked distance

#66,534of 163,734

11,206 mi

Observed time

#74,183of 163,734 · tied

21.9 hr

Route breadth

#33,359of 163,734 · tied

Active aircraft

#86,943of 163,734 · tied

Active days

#98,622of 163,734 · tied

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Tracked flights6

6 active days

Tracked distance11,206 mi

1,868 mi avg per flight

Observed time21 hr 55 min

3 hr 39 min average

Tracking Confidence100.0%

Average across flights included in analytics

Named routes1

2 aircraft types

Average mid-flight altitude10,993 m

Average mid-flight speed851 km/h

Tracked activity

Aug 22 – Sep 24, 2026 · 6 active days

Flights6

Aug 22

Sep 5

Sep 12

Sep 16

Sep 19

Sep 23

Observed route footprint

Routes tracked as UA166

Directional airport pairings in Aug 22 – Sep 24, 2026.

1 routes shown

Route	Flights	Active days	Tail numbers	Tracked distance	Observed	First observed	Last observed
TPE → GUM	6	6	0	11,206 mi	21 hr 55 min	Aug 22, 2026, 3:26 AM UTC	Sep 23, 2026, 7:14 AM UTC

Observed tail number assignments

Tail numbers tracked as UA166

Open a tail number for its complete tracked profile.

5 tail numbers shown

Tail number	Type	Flights	Routes	Tracked distance	First observed	Last observed
N17309	B38M	2	1	3,864 mi	Sep 12, 2026, 3:16 AM UTC	Sep 23, 2026, 7:14 AM UTC
N17302	B38M	1	1	1,783 mi	Sep 19, 2026, 3:47 AM UTC	Sep 19, 2026, 7:12 AM UTC
N17329	B38M	1	1	1,805 mi	Sep 16, 2026, 3:14 AM UTC	Sep 16, 2026, 6:48 AM UTC
N17303	B38M	1	1	1,946 mi	Sep 5, 2026, 3:15 AM UTC	Sep 5, 2026, 6:57 AM UTC
N73283	B738	1	1	1,809 mi	Aug 22, 2026, 3:26 AM UTC	Aug 22, 2026, 7:00 AM UTC

Observed aircraft types

Aircraft types tracked as UA166

Observed flights grouped by aircraft designator and matched to the aircraft reference catalog.

2 aircraft types shown

Type	Aircraft name	Flights	Makeup	Tail numbers	Tracked distance	Routes	First observed	Last observed
B38M	Boeing 737 MAX 8	5	83.3%	4	9,397 mi	1	Sep 5, 2026, 3:15 AM UTC	Sep 23, 2026, 7:14 AM UTC
B738	Boeing 737-800	1	16.7%	1	1,809 mi	1	Aug 22, 2026, 3:26 AM UTC	Aug 22, 2026, 7:00 AM UTC

Observation log

Flight observations

Latest 100 flights for UA166 within Aug 22 – Sep 24, 2026

11 observations shown

Confidence	Route	Tail number	Aircraft	First observed	Last observed	Observed	Tracked distance
High · 100	TPE → GUM	N17309	B38M	Sep 23, 2026, 3:14 AM UTC	Sep 23, 2026, 7:14 AM UTC	3 hr 60 min	2,064 mi
High · 100	TPE → GUM	N17302	B38M	Sep 19, 2026, 3:47 AM UTC	Sep 19, 2026, 7:12 AM UTC	3 hr 26 min	1,783 mi
High · 100	TPE → GUM