United Airlines 757-300
UANarrow-body jet
Fleet as reported in the 2025 annual filing · Registry & ages refreshed Sep 1, 2026
- Passengers flown a year
- 2.8M
- 14th-largest United Airlines sub-fleet
- Airframes in the filing
- 21
- Airports served
- 10
- Departures a day
- 38
- Average age
- 23.7 yr
How United Airlines flies its 757-300
Filed traffic dataThe count above is the 757-300 airframes United Airlines owns (US DOT Form 41). This is how it actually flew them to 10 airports — the capacity and busiest routes filed with US DOT T-100 over the trailing 12 months.
Departures flown
13,721
May 2026
Seats flown
3,210,714
Passengers
2.8M
Load factor
86.3%
RPM ÷ ASM
Block hours
55,268
United Airlines's busiest 757-300 routes
Its busiest 757-300 routes over the trailing 12 months, by departures.
Chicago – San Francisco (ORD–SFO)
1,871 departures · 385,553 passengers · 1,846 mi
88.1%
Load
Los Angeles – Chicago (LAX–ORD)
1,610 departures · 317,671 passengers · 1,744 mi
84.3%
Load
1,394 departures · 284,411 passengers · 888 mi
87.2%
Load
Denver – San Francisco (DEN–SFO)
1,088 departures · 223,866 passengers · 967 mi
87.9%
Load
Honolulu, Oahu – Los Angeles (HNL–LAX)
905 departures · 189,295 passengers · 2,556 mi
89.4%
Load
826 departures · 170,238 passengers · 1,547 mi
88.1%
Load
Dulles – Los Angeles (IAD–LAX)
764 departures · 159,175 passengers · 2,288 mi
89.0%
Load
658 departures · 138,645 passengers · 861 mi
90.0%
Load
593 departures · 122,362 passengers · 1,005 mi
88.2%
Load
Dulles – San Francisco (IAD–SFO)
563 departures · 115,401 passengers · 2,419 mi
87.6%
Load
562 departures · 116,435 passengers · 1,452 mi
88.5%
Load
Honolulu, Oahu – San Francisco (HNL–SFO)
512 departures · 101,746 passengers · 2,398 mi
84.9%
Load
Houston – San Francisco (IAH–SFO)
330 departures · 65,884 passengers · 1,635 mi
85.3%
Load
Kailua-Kona – San Francisco (KOA–SFO)
292 departures · 56,678 passengers · 2,368 mi
83.0%
Load
Houston – Los Angeles (IAH–LAX)
236 departures · 48,556 passengers · 1,379 mi
87.9%
Load
The longest and shortest United Airlines 757-300 flights
The two ends of the type's working envelope, from the routes it actually flew — not what the airframe is certified to do.
Longest route flown
2,556 mi
Honolulu, Oahu – Los Angeles (HNL–LAX)
5h 33m block · 905 departures · 89% load
Flown by United Airlines. A long leg for a narrow-body twin — far enough from a diversion airport that the type carries an ETOPS rating.
Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through May 2026.
Where United Airlines flies the 757-300 from
United Airlines flies its 757-300 from 10 US airports. The busiest, by departures:
- ORD
2,794 departures · 5 routes
21.6%
Share
- DEN
2,472 departures · 7 routes
19.1%
Share
- SFO
2,411 departures · 7 routes
18.6%
Share
- LAX
1,848 departures · 5 routes
14.3%
Share
- IAD
942 departures · 3 routes
7.3%
Share
- MCO
818 departures · 4 routes
6.3%
Share
- HNL
707 departures · 2 routes
5.5%
Share
- IAH
687 departures · 5 routes
5.3%
Share
- KOA
143 departures · 1 route
1.1%
Share
- DCA
117 departures · 1 route
0.9%
Share
Where the 757-300 sits in United Airlines's fleet
The 757-300 is 2.0% of United Airlines's 1,076 tracked mainline aircraft.
Share of United Airlines's mainline fleet · each type a slice · the 757-300 is the ringed slice at 2.0%
Other United Airlines types
How old is the United Airlines 757-300 fleet?
Age is measured from each airframe's delivery date — the FAA airworthiness date where available, otherwise the manufacturer's. Bars share a fixed scale across every fleet page, so two carriers can be compared directly.
See all 21 757-300 tail numbers in United Airlines's fleet →
Monthly United Airlines 757-300 capacity
Frequently asked
How many 757-300 does United Airlines have?
United Airlines operates about 21 757-300 aircraft — 21 in service and 0 stored in its latest US DOT fleet filing.
Where does United Airlines fly the 757-300?
United Airlines flies its 757-300 to about 10 US airports, its busiest route being ORD–SFO.
How old are United Airlines's 757-300?
United Airlines's 757-300 fleet averages about 23.7 yr, ranging from 17.5 yr to 25.1 yr.
What is the longest 757-300 route United Airlines flies?
The longest 757-300 route United Airlines flew over the trailing 12 months is HNL–LAX, about 2,556 miles.