Every Washington–Las Vegas 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-las-vegas/#2026-09-29-2026-10-07-F9https://flight.deals/flights/washington-to-las-vegas/#2026-09-29-2026-10-07-F9WAS → LAS round-trip on Frontier Airlines, 2026-09-29 to 2026-10-07 (8 nights). Cached fare $242 vs typical $415.Sun, 30 Aug 2026 05:03:17 GMT