Originally Posted by
joejones
Same as NYC and London. Take a bus between airports.
Or connect somewhere else. Probably very few routings *require* a LGA-JFK shuffle because they couldn't be done via BOS, ORD, PHL, or elsewhere.
Same on LHR-LGW.
For Intl-to-domestic Japan, maybe it's faster/easier to route via ICN? (Or KIX in some cases?)