This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $67 fare is the cheapest current round-trip from Porto (OPO) to MIL on W4 flight W46336, departing 2026-09-24 at 20:20 with return on 2026-09-27.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.