Every Lisbon–Porto 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/lisbon-to-porto/#2026-10-31-2026-11-30-TPhttps://flight.deals/flights/lisbon-to-porto/#2026-10-31-2026-11-30-TPLIS → OPO round-trip on TAP Air Portugal, 2026-10-31 to 2026-11-30 (30 nights). Cached fare $88 vs typical $105.Sun, 30 Aug 2026 05:03:17 GMT