Icelandair to launch seasonal Reykjavik‑St. Louis nonstop service in May 2027

Service launch and schedule

The carrier announced seasonal nonstop flights between Keflavik International Airport and St. Louis Lambert International Airport beginning 14 May 2027 and continuing until 24 Oct 2027. Flights will operate on Mondays, Wednesdays, Fridays and Sundays.

simpleflying.com and travelerstoday.com state the service will consist of up to four weekly flights, while airlinegeeks.com describes the frequency as three to four flights per week.

Aircraft and capacity

The route will be served by a Boeing 737 MAX 8 configured with 16 business‑class recliner seats and 144 economy‑class seats.

Partnership and network impact

St. Louis becomes a new gateway for Icelandair’s interline partnership with Southwest Airlines, expanding the carrier’s Midwest connections to more than 35 European destinations.

Icelandair’s Chief Commercial Officer Tomas Ingason called St. Louis the airline’s “newest gateway.”

Pricing and distance

Round‑trip economy fares for the inaugural season are listed from $495, and the great‑circle distance between the two airports is roughly 3,190 miles.