This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $500 fare is the cheapest current round-trip from Portland (PDX) to CUN on Air Canada flight AC8653, departing 2026-06-10 at 15:30 with return on 2026-06-17.

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