Flying Philadelphia → Madrid at the front of the plane
Booked well, Philadelphia to Madrid in First Class is not an indulgence so much as arithmetic: a flat bed out of Philadelphia International Airport (PHL), hours of genuine sleep, and a first day in Madrid you don't lose to recovery.
The absence of a nonstop First Class product here is an opportunity in disguise: a one-stop on British Airways, Air France, Lufthansa and American Airlines adds a world-class lounge visit mid-journey and frequently prices better than direct premium alternatives.
Philadelphia offers American's Admirals Clubs and a contract international lounge, but nothing approaching a flagship First facility. The remarkable ground experiences — the Emirates First lounge and Chelsea Lounge at JFK Terminal 8 among them — sit one short hop away, which is precisely how well-built Philadelphia itineraries are structured.
May, June, September, and October are Madrid at its best — warm evenings, full terraces, and the galleries uncrowded. July and August are punishingly hot, and much of the city's restaurant scene closes for parts of August. Winter is dry, bright, and excellent value, with First fares and five-star suites both noticeably softer. San Isidro festivities in mid-May tighten hotel availability.