United Airlines 777-300ER
Overview
The Boeing 777-300ER is the largest and flagship aircraft in United's fleet — 22 aircraft, all in active service. Delivered between 2016 and 2020, they are also the newest 777s United flies. At 73.9 meters long with 350 seats and 60 Polaris lie-flat seats (the most of any United type), the 777-300ER works the airline's most prestigious long-haul routes on two GE90-115B engines — at roughly 115,000 lbf, the world's most powerful jet engine.
Seat Configuration
| Cabin | Seats | Layout |
|---|---|---|
| Polaris Business | 60 | 1-2-1 |
| Premium Plus | 24 | 2-4-2 |
| Economy Plus | 62 | 3-4-3 |
| Economy | 204 | 3-4-3 |
WiFi & In-Flight Entertainment
All 22 aircraft feature Ku-band satellite WiFi, seatback AVOD plus personal-device entertainment, and 110V AC power. United's 777 fleet led the airline's widebody Starlink rollout, which began June 22, 2026 with flight UA14 from Newark (EWR) to London Heathrow — United's first transatlantic Starlink service. Starlink is free for MileagePlus members, and United plans to equip its full widebody fleet by summer 2027.
Routes & Hubs
- San Francisco (SFO) — Hong Kong and Sydney
- Newark (EWR) — Dubai, Tel Aviv, and London
The flagship 777-300ER concentrates on United's premium long-haul international markets, with a range of about 7,370 nautical miles.
Related Aircraft
777-200ER (55) and 777-200 (19) are the smaller 777 variants.
Specifications
Key technical specifications for the Boeing 777-300ER as operated by United Airlines.
| Manufacturer | The Boeing Company |
| Model | 777-300ER |
| Body type | Wide-body |
| Engines | 2x GE90-115B (most powerful jet engine) |
| Range | 7,370 nmi (13,650 km) |
| Cruise speed | Mach 0.84 |
| Wingspan | 64.8 m (213 ft) |
| Length | 73.9 m (242 ft) |
Aircraft Registry — All 22 Boeing 777-300ER
Complete list of every United Airlines Boeing 777-300ER with registration, delivery year, seat configuration, WiFi, IFE, and current status. Data updated daily from public aviation records.
| Reg | AC# | Config | WiFi | IFE | Power | Year | Status |
|---|---|---|---|---|---|---|---|
| N2135U | 2135 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | SIN Maint 1/22/26 |
| N2136U | 2136 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2138U | 2138 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2140U | 2140 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2142U | 2142 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2243U | 2143 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2250U | 2150 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2019 | Active |
| N2251U | 2151 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2020 | Active |
| N2331U | 2131 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2016 | *New Spirit of UA |
| N2332U | 2132 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2016 | Active |
| N2333U | 2133 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2341U | 2141 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2352U | 2152 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2020 | Active |
| N2534U | 2134 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2639U | 2139 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | XMN Maint 1/22/26 |
| N2644U | 2144 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2645U | 2145 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2018 | Active |
| N2737U | 2137 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2017 | Active |
| N2747U | 2147 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2018 | Active |
| N2748U | 2148 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2018 | Active |
| N2749U | 2149 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2019 | Active |
| N2846U | 2146 | 60J/24PE/62E+/204Y | Satl Ku | AVOD/PDE | 110 V | 2018 | Active |
Frequently Asked Questions
How many Boeing 777-300ER aircraft does United Airlines have?
United operates 22 Boeing 777-300ERs, delivered 2016–2020 — the largest and newest jets in its fleet, and all remain in active service.
What is the seat configuration on United's 777-300ER?
350 passengers: 60 Polaris (1-2-1), 24 Premium Plus (2-4-2), 62 Economy Plus (3-4-3), 204 Economy (3-4-3).
Does the United 777-300ER have Polaris business class?
Yes. 60 Polaris lie-flat seats in 1-2-1 configuration — the most Polaris seats of any United aircraft type.
What is the largest aircraft in United Airlines' fleet?
The Boeing 777-300ER at 73.9 meters (242 feet) long with 350 seats across four cabin classes.
What engines power the United 777-300ER?
Two GE90-115B engines, each producing about 115,000 pounds of thrust — the world's most powerful jet engine and the only factory-fit GE powerplant on a United 777.
What routes does United fly the 777-300ER on?
Flagship long-haul international from San Francisco (SFO to Hong Kong and Sydney) and Newark (EWR to Dubai, Tel Aviv, and London).
All United Fleet Types
Explore every aircraft type in United Airlines' mainline fleet.