This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $340 fare is the cheapest current round-trip from Vancouver (YVR) to SFO on United Airlines flight UA640, departing 2026-06-27 at 08:35 with return on 2026-07-01.

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