Every Washington–Singapore fare we track, measured against the route's typical price whenever there is enough cached history to build one. Subscribe in any RSS reader for free single-route price alerts — no account, no email needed.https://flight.dealsen-ushttps://flight.deals/flights/washington-to-singapore/#2026-10-07-2026-10-12-QKhttps://flight.deals/flights/washington-to-singapore/#2026-10-07-2026-10-12-QKWAS → SIN round-trip on Air Canada Express, 2026-10-07 to 2026-10-12 (5 nights). Cached fare $1,151. Not enough cached history on this route yet to say what it usually costs.Fri, 21 Aug 2026 06:01:13 GMT