Well, if you want some possibilities (and some of these obviously require slot considerations).....
PIT-DCA, 2Q05 avg yield $1.68, Sept05 about 6,000 pax each way (not counting the 7000+ IAir carried each way to/from IAD).
EWR-DCA, 2Q05 avg yield $1.22, Sept05 about 10,000 pas each way (not counting the 6500+ IAir carried each way to/from IAD).
BOS-EWR, 2Q05 avg yield $1.17, Sept05 about 27,000 pax each way (didn't B6 start this fairly recently?)
RIC-EWR, 2Q05 avg yield $1.09, Sept05 about 4,000 pax each way (didn't B6 or FL announce or start service RIC-NYC recently?)
PIT-LGA, oh yeah - the subject of a whole tread around here somewhere...2Q05 avg yield $0.92.
ORF-EWR, 2Q05 avg yield $0.91, Sept05 about 5,000 pax each way.
CLT-DCA, 2Q05 avg yield $0.85, Sept05 about 19,000 pax each way (not counting the 7,500 pax each way that IAir and the 9,000 that US carried to/from IAD).
ROC-EWR, 2Q05 avg yield $0.82, Sept05 about 5500 pax each way.
PIT-EWR, 2Q05 avg yield $0.81, Sept05 about 11,500 pax each way.
SYR-LGA, oh yeah, B6 again to JFK carrying almost 11,000 pax in Sept.
CMH-PHL, 2Q05 avg yield $0.68, Sept05 about 6,700 pax each way.
BUF-EWR, 2Q05 avg yield $0.66, Sept05 about 10,000 pax each way.
PWM-LGA, 2Q05 avg yield $0.61, Sept05 about 6.700 pax each way.
RIC-LGA, 2Q05 avg yield $0.59, Sept05 about 8,000 pax each way.
CMH-EWR, 2Q05 avg yield $0.57, Sept05 about 8,200 pax each way.
ROC-LGA, another B6 route to JFK.
RDU-EWR, 2Q05 avg yield $0.50, Sept05 about 13,000 pax each way.
These are the ones that had a 2Q05 average yield of at least 50 cents and had Sept passenger numbers of over 150/day average. There are a few more that had the avg yield and passenger numbers in 2Q05 but the passenger numbers dropped in Sept05 - that could just be seasonal.
Jim