Starting Thursday, JetBlue Airways will serve Philadelphia International Airport with five daily nonstop flights from Boston’s Logan International Airport.

The airline plans to celebrate its 78th destination through May 30 by selling one-way $39 flights between the two cities for travel between June 1 and Sept. 28. (Alert: Blackout dates apply.)

In a press release, the airline said: “Adding Philadelphia to its growing route map helps solidify JetBlue’s already strong relevance for the business traveler, particularly at Logan International Airport.  JetBlue operates over 100 daily flights from Boston’s Logan International Airport and Philadelphia will be the 48th destination JetBlue serves from Boston.”

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The release included a statement from Edward C. Freni, the director of aviation for the Massachusetts Port Authority.

‘We are pleased that JetBlue now has nonstop service from Boston to Philadelphia,’’ Freni said. ‘‘Since it began service at Logan in 2004, JetBlue has shown strong commitment to Boston reflected by the steady growth of service.”