Have a trip to book to NYC, here's what I found: (one-way)

(BOS) Logan $90
(MHT) Manchester $192
(PWM) Portland $95

Notice how MHT is EXPENSIVE! My god. To get a fare around $120 bucks I have to go MHT-PHL-BWI-LGA
I guess this would be great if I was going for a mileage run