This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $796 fare is the cheapest current round-trip from Chicago (MDW) to GUA on Frontier flight F91887, departing 2026-05-16 at 15:07 with return on 2026-05-30.

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