$357 Find Cheap Flights from St. Louis to Reykjavik - Compare and Save

In the last 5 days, the lowest price for a flight from St. Louis to Reykjavik Keflavik Intl Airport was $357 for a one-way ticket and $777 for a round-trip.

Yes, you’ll need a passport to travel to Reykjavik from St. Louis.

On your way to Reykjavik, you’ll fly out from Lambert-St Louis. You’ll be landing at Reykjavik Keflavik Intl.

We unfortunately don’t have that data for this specific route.

SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Reykjavik, with SkyTeam being the most commonly used for this route.

The two airlines most popular with KAYAK users for flights from St. Louis to Reykjavik are Delta and KLM. With an average price for the route of $1,080 and an overall rating of 7.8, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,080 and an overall rating of 7.8.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Reykjavik.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and KEF can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.