Every Madrid–San Juan fare we track, measured against the route's typical price whenever there is enough cached history to build one. Subscribe in any RSS reader for free single-route price alerts — no account, no email needed.https://flight.dealsen-ushttps://flight.deals/flights/madrid-to-san-juan/#2027-02-11-2027-02-20-AVhttps://flight.deals/flights/madrid-to-san-juan/#2027-02-11-2027-02-20-AVMAD → SJU round-trip on Avianca, 2027-02-11 to 2027-02-20 (9 nights). Cached fare $719 vs typical $850.Tue, 01 Sep 2026 12:09:07 GMT