JetBlue Airways offers select 1-way fares starting at $38.90. (Click on "JetBlue Airways" under "Booking Tips"; all taxes are included.) That ties our March mention as the third-lowest base rate we've seen from JetBlue in the past 12 months. It's also a current low for select routes by $60. This price is valid on flights departing from Boston, MA, (BOS) to Philadelphia, PA, (PHL) on May 27; prices vary depending on the travel cities and dates chosen. A 14-day advance purchase may be required and blackout dates may apply. This travel deal ends today for travel May 21 through June 19.