United Airlines 777-300ER
UAWide-body jet
Fleet as reported in the 2025 annual filing · Registry & ages refreshed Sep 1, 2026
- Passengers flown a year
- 2.9M
- 13th-largest United Airlines sub-fleet
- Airframes in the filing
- 22
- Airports served
- 14
- Countries
- 11
- Departures a day
- 27
- Average age
- 8.7 yr
How United Airlines flies its 777-300ER
Filed traffic dataThe count above is the 777-300ER airframes United Airlines owns (US DOT Form 41). This is how it actually flew them to 14 airports across 11 countries — the capacity and busiest routes filed with US DOT T-100 over the trailing 12 months.
Departures flown
10,016
May 2026
Seats flown
3,505,600
Passengers
2.9M
Load factor
83.2%
RPM ÷ ASM
Block hours
100,893
United Airlines's busiest 777-300ER routes
Its busiest 777-300ER routes over the trailing 12 months, by departures.
Hong Kong – San Francisco (HKG–SFO)
1,426 departures · 398,319 passengers · 6,927 mi
79.8%
Load
Manila – San Francisco (MNL–SFO)
1,160 departures · 368,515 passengers · 6,987 mi
90.8%
Load
Newark – San Francisco (EWR–SFO)
906 departures · 278,519 passengers · 2,565 mi
87.8%
Load
Honolulu, Oahu – San Francisco (HNL–SFO)
755 departures · 237,703 passengers · 2,398 mi
90.0%
Load
San Francisco – Taoyuan (SFO–TPE)
735 departures · 200,144 passengers · 6,469 mi
77.8%
Load
Shanghai – San Francisco (PVG–SFO)
724 departures · 207,542 passengers · 6,151 mi
81.9%
Load
Hagåtña – Honolulu, Oahu (GUM–HNL)
716 departures · 185,171 passengers · 3,801 mi
73.9%
Load
Newark – Frankfurt am Main (EWR–FRA)
702 departures · 207,771 passengers · 3,869 mi
84.6%
Load
Frankfurt am Main – Dulles (FRA–IAD)
638 departures · 187,496 passengers · 4,080 mi
84.0%
Load
Zaventem – Dulles (BRU–IAD)
588 departures · 173,889 passengers · 3,892 mi
84.5%
Load
Dubai – Newark (DXB–EWR)
490 departures · 143,135 passengers · 6,861 mi
83.5%
Load
Frankfurt am Main – San Francisco (FRA–SFO)
298 departures · 88,139 passengers · 5,699 mi
84.5%
Load
Narita – San Francisco (NRT–SFO)
265 departures · 77,347 passengers · 5,124 mi
83.4%
Load
Newark – Rome (EWR–FCO)
255 departures · 81,932 passengers · 4,293 mi
91.8%
Load
Newark – Los Angeles (EWR–LAX)
29 departures · 8,604 passengers · 2,454 mi
84.8%
Load
The longest and shortest United Airlines 777-300ER 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
6,987 mi
Manila – San Francisco (MNL–SFO)
13h 28m block · 1,160 departures · 91% load
Flown by United Airlines.
Shortest route flown
2,398 mi
Honolulu, Oahu – San Francisco (HNL–SFO)
5h 4m block · 755 departures · 90% load
Flown by United Airlines. Also one of the type's busiest routes anywhere in the US — a short hop worked like a bus line.
Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through May 2026.
Where United Airlines flies the 777-300ER from
United Airlines flies its 777-300ER from 14 US airports in 11 countries. The busiest, by departures:
- SFO
3,143 departures · 8 routes
32.5%
Share
- EWR
1,175 departures · 4 routes
12.2%
Share
- FRA
Frankfurt am Main
817 departures · 3 routes
8.5%
Share
- HNL
737 departures · 2 routes
7.6%
Share
- HKG
Hong Kong
711 departures · 1 route
7.4%
Share
- IAD
615 departures · 2 routes
6.4%
Share
- MNL
Manila
578 departures · 1 route
6.0%
Share
- TPE
Taoyuan
366 departures · 1 route
3.8%
Share
- PVG
Shanghai
361 departures · 1 route
3.7%
Share
- GUM
Hagåtña
356 departures · 1 route
3.7%
Share
Where the 777-300ER sits in United Airlines's fleet
The 777-300ER is 2.0% of United Airlines's 1,076 tracked mainline aircraft.
Share of United Airlines's mainline fleet · each type a slice · the 777-300ER is the ringed slice at 2.0%
Other United Airlines types
How old is the United Airlines 777-300ER 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 22 777-300ER tail numbers in United Airlines's fleet →
Monthly United Airlines 777-300ER capacity
Frequently asked
How many 777-300ER does United Airlines have?
United Airlines operates about 22 777-300ER aircraft — 22 in service and 0 stored in its latest US DOT fleet filing.
Where does United Airlines fly the 777-300ER?
United Airlines flies its 777-300ER to about 14 US airports across 11 countries, its busiest route being HKG–SFO.
How old are United Airlines's 777-300ER?
United Airlines's 777-300ER fleet averages about 8.7 yr, ranging from 6.5 yr to 9.7 yr.
What is the longest 777-300ER route United Airlines flies?
The longest 777-300ER route United Airlines flew over the trailing 12 months is MNL–SFO, about 6,987 miles.