It is sad, but true that recently BOS has lost a couple of international airlines.
TAP Air Portugal really has given no reason as to why they left, but my guess is that it has to with the fact that they are slowly and constantly haemorrhaging money. However, once their financial situation improves they'll return. Boston, and Southeastern Massachusetts are home to some of the highest concentrations of Portugeuse people outside of Portugal, so for TAP to leave BOS permanently, would not only be doing a disservice for the Portugeuse people of Massachusetts, but also for TAP the airline. My guess is that they'll be back by no later than 2003.
Korean Air left mainly due to rising fuel costs, and the fact that BOS currently has no transit lounge for passengers to wait in, before those continuing on to Washington and Seoul can board or reboard. The flights were almost always full, and the airline expects to return in 2003, when Terminal E is expanded and renovated.
Sun Country is planning to return to BOS in May. Don't know why they left, but now they are returning, armed with their beautiful new 737s.
Air Jamaica recently began ops to BOS, 5x-weekly, using A320s. Unfortunately the flight arrives so late at night, and departs so early, it's a pain in the ass to try and spot.
Granted BOS is not as interesting as it has been, but I think 2001 will prove interesting, especially in regards to US airlines.
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