A couple of reasons:
- NYC-LHR market has placed an importance on frequency
- UA needs to offer frequencies to maintain its LHR slots
- Larger aircraft would provide too much Y capacity - the Y cabin seems to be a ghost town this time of the year through mid-April.
Originally Posted by
raiachat
The 767s on that route have not been re-fitted and they are always packed - why not use a larger plane on this route?