Try a Kenyan variety, something like a nilgiri in a broken orange pekoe leaf if your normal preference is English Breakfast. It's stronger and more bitter than the Ceylon/Assam blend which is a good EB, and likely to come close to the flavour you want.
The Georgian "Chai" type blends are/were used I think by Aeroflot, and should give something very similar to a Darjeeling.
P