Every Boston–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/boston-to-porto/#2026-10-14-2026-10-18-TPhttps://flight.deals/flights/boston-to-porto/#2026-10-14-2026-10-18-TPBOS → OPO round-trip on TAP Air Portugal, 2026-10-14 to 2026-10-18 (4 nights). Cached fare $680. Not enough cached history on this route yet to say what it usually costs.Tue, 01 Sep 2026 12:09:07 GMT