AirHint found the following cheapest return flights from Philadelphia (PHL) to San Jose (SJO) in May 2026 (see full year).
Return flights
| 30 May - 03 Jun | United | ||
| 14 May - 19 May | United | ||
| 05 May - 13 May | Spirit Airlines | ||
| 21 May - 01 Jun | Frontier Airlines | ||
| 21 May - 31 May | Spirit Airlines | ||
| 21 May - 05 Jun | Spirit Airlines |
Also check the deals for one-way flights from Philadelphia to San Jose in May.
Powered by
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
Find us on social media