This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $607 fare is the cheapest current round-trip from San Francisco (SFO) to SGN on Air India flight AI174, departing 2026-05-28 at 10:30 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.