Rankings / Aircraft types / Boeing 767-400ER
2025 fuel burnBoeing 767-400ER
The 767-400ER is the stretched 767, and Boeing built only a few dozen of them, almost all for Continental and Delta. Delta and United, which took over the Continental fleet, fly the ones in this data.
- 1,882gallons per airborne hour
- 63.1seat-miles per gallon
- 233seats per flight on average
- 13,664gallons burned per flight
What the figures say
Boeing 767-400ER ranks 20 of 25 types for seat-miles per gallon in 2025, at 63.1. The Boeing 737-800, the most common type in the table, flew 79.1, so a gallon on the Boeing 767-400ER carried a seat 20% less far. Over 1,000 miles, one seat on this type accounts for about 154 kg of CO2 from the fuel burned.
US airlines burned 281 million gallons on the Boeing 767-400ER in 2025, 1.5% of the fuel burned on all scheduled passenger flying, over 149 thousand airborne hours and 21 thousand departures. The average flight spent 7.3 hours in the air and burned 13,664 gallons.
Since 2001, when it was first flown in volume, the type's figure has fallen from 70.2 to 63.1 seat-miles per gallon (10%). Its best year was 2005, at 72.6. The average flight got longer, from 3.2 to 7.3 hours in the air, which tends to lower fuel burn per seat-mile, because take-off and climb take a larger share of the fuel on a short flight.
Airlines get different results from the same aircraft. Delta Air Lines flew 63.6 seat-miles per gallon on it and United Airlines 62.4, a gap of 1.9%. The seat count explains most of it: Delta Air Lines put 235 seats on each flight against 231 at United Airlines. Flights were about the same length at both airlines, 7.0 and 7.7 hours in the air. What's left comes from taxi and holding time, weight, engines, how each airline operates and how it allocates fuel to types when it reports, and the filings can't separate those.
What one seat costs the climate
CO2 for one seat on a Boeing 767-400ER, from the fuel burned, at the 2025 average.
- 77 kgover 500 miles
- 154 kgover 1,000 miles
- 309 kgover 2,000 miles
Who flies it, and how they burn
Boeing 767-400ER by airline, 2025
| Airline | Fuel (million gallons) | Gallons per airborne hour | Seats per flight | Hours per flight | Seat-miles per gallon |
|---|---|---|---|---|---|
| Delta Air Lines | 164 | 1,883 | 235 | 7.0 | 63.6 |
| United Airlines | 117 | 1,880 | 231 | 7.7 | 62.4 |
Seats on the Boeing 767-400ER, airline by airline
The Boeing 767-400 has 235 seats at United Airlines and 238 at Delta Air Lines, 1% more on the same model. The seat count is what each airline reports for its own aircraft in 2025, for airlines with 10 or more.
Boeing 767-400ER fleets, 2025
| Airline | Aircraft | Average seats | Fewest to most | Average age |
|---|---|---|---|---|
| United Airlines | 16 | 235.0 | 235 | 23.6 |
| Delta Air Lines | 21 | 238.0 | 238 | 24.4 |
See every airline's fleet on the fleets page.
Similar-sized aircraft
These types carry within about 25 seats of the Boeing 767-400ER, so they compete for the same routes.
How to read this. Fuel is what airlines issued to the type in 2025, as filed with the US Bureau of Transportation Statistics, counted only for the hours spent on scheduled passenger flights and divided by the hours in the air. It includes fuel burned taxiing and holding, so it's higher than the cruise figure in a manual. CO2 is 9.75 kg per gallon of jet fuel.
More from Boeing
Browse the Boeing manufacturer hub and its other profiled types:
- Boeing 737 MAX 9
- Boeing 737 MAX 8
- Boeing 787-10
- Boeing 737-900ER
- Boeing 757-300
- Boeing 737-800
- Boeing 787-9
- Boeing 787-8
- Boeing 737-700
- Boeing 757-200
- Boeing 777-300ER
- Boeing 777-200
- Boeing 767-300ER
Nearby in fuel efficiency
Types on either side of this one in the seat-miles per gallon table, regardless of size:
Source: US Bureau of Transportation Statistics (BTS), Schedule T-2 fuel and airborne hours; US EPA jet-fuel CO2 factor. See the methodology and flight-hour definitions.
Back to all aircraft types, or see how the airlines compare on the airline pages.