Every Washington–Belgrade 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-belgrade/#2026-09-25-2026-09-28-FIhttps://flight.deals/flights/washington-to-belgrade/#2026-09-25-2026-09-28-FIWAS → BEG round-trip on Icelandair, 2026-09-25 to 2026-09-28 (3 nights). Cached fare $1,051. Not enough cached history on this route yet to say what it usually costs.Tue, 01 Sep 2026 12:09:07 GMT