Every Chicago–Reykjavík 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/chicago-to-reykjavik/#2026-09-09-2026-09-16-FIhttps://flight.deals/flights/chicago-to-reykjavik/#2026-09-09-2026-09-16-FICHI → KEF round-trip on Icelandair, 2026-09-09 to 2026-09-16 (7 nights). Cached fare $442 vs typical $645.Sun, 30 Aug 2026 05:03:17 GMT