Icelandair to Launch St. Louis Service in May 2027
The new non-stop flight will connect St. Louis Lambert International Airport to Reykjavik starting May 14, 2027.
Updated on Oct. 21, 2026 in Air Travel
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Icelandair will initiate non-stop service between St. Louis and Reykjavik beginning May 14, 2027. The flights will operate three to four times per week through October 24, 2027.
Why it matters
The new route expands travel options for St. Louis residents by leveraging a partnership with Southwest Airlines, the airport's largest carrier. This collaboration allows passengers to connect to various North American destinations via St. Louis before heading to Iceland and Europe.
The flight service will operate on Monday, Wednesday, Friday, and Sunday. This route connects St. Louis Lambert International Airport directly to Reykjavik Keflavik International Airport.
The players
Icelandair
This is the national flag carrier of Iceland that provides international flight services.
Southwest Airlines
This is a major American airline that serves as the largest carrier at St. Louis Lambert International Airport.
The details
The new route is part of a broader expansion for the carrier, which also includes the resumption of non-stop flights between Madrid and Reykjavik. This secondary service is scheduled to run from April 9, 2027, through October 25, 2027.
Timeline
April 9, 2027: Service between Madrid and Reykjavik restarts.
May 14, 2027: Non-stop service from St. Louis to Reykjavik begins.
October 24, 2027: St. Louis to Reykjavik service ends.
October 25, 2027: Madrid to Reykjavik service ends.
Travel Outlook
This move reflects the ongoing trend of airlines expanding transatlantic hub partnerships to capture regional passenger traffic. The strategy mirrors historical efforts to connect secondary North American markets to European gateways through coordinated interline agreements.
St. Louis travelers can use the Southwest Airlines partnership to book connecting flights to Iceland and Europe through this new service. Passengers should monitor future booking windows to secure seats on the three-to-four weekly flights available during the summer and early fall seasons.
The takeaway
Travelers looking to visit Iceland or connect to Europe should watch for ticket availability as the service dates approach in 2027. Utilizing the Southwest Airlines connection may offer more flexible routing for passengers traveling from other North American cities.
What happens next
The new St. Louis to Reykjavik service is scheduled to run from May 14, 2027, to October 24, 2027, with the Madrid route operating from April 9, 2027, to October 25, 2027.
Further reading
For more information on local airport developments, visit the St. Louis Air Travel section.
Source note: This article includes information reported by Global Traveler.
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