Boston (BOS) to Moscow (MOW): 4,468 miles (7,190 km) great-circle, about 9h 25m nonstop by our estimate. Cheapest fare observed: $1322 round-trip on Icelandair, with 3 stops, departing April 25, 2026.
$1322 round-trip, Icelandair FI632, departing 2026-04-25 at 23:00, returning 2026-05-22. The recorded itinerary left on a Saturday, returning on a Friday 27 nights later; the fare was observed 0 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1322, it ranked 29th of the 30 round-trip fares we recorded from BOS (median $623). That is 29.6 cents per great-circle mile (round-trip price over one-way distance), above the BOS median of 19.1 cents across 30 round-trip routes.
Routes from BOS of similar length: Istanbul (4,801 mi) at $937 and Rome (4,082 mi) at $633.
Icelandair had the cheapest fare on 2 of 30 BOS routes. It is the 7th longest of the 30 routes we track from BOS.
Of 130 departure airports with a fare to Moscow, Boston (BOS) ranked 93rd at $1322. Lowest: $213 from Delhi (DEL); highest: $2476 from Havana (HAV); 3 nonstop. Cheapest-fare airlines (routes): Pegasus Airlines (11), Etihad (8), Qatar (6), Icelandair (5), Wizz Air (5) and Air China (4), plus 53 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, Europe/Moscow; flight time is our estimate.