$551 Find Cheap Flights from St. Louis to Reykjavik - Compare and Save

Four cabin classes are available on flights from St. Louis to Reykjavik Keflavik Intl Airport:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A nonstop flight from St. Louis to Reykjavik Keflavik Intl Airport takes 00m, covering 3,191 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Round-trip flights from St. Louis to Reykjavik Keflavik Intl Airport range from $915 to $1,280, with an average of $1,057 over the past 12 months. Anything below $915 counts as a good deal.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $100–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $709 to $5,068. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from St. Louis to Reykjavik Keflavik Intl Airport are currently lower than usual. Average one-way flight prices are about $427, which is 27% below the typical average for this route.

Reykjavik Keflavik Intl Airport (KEF) hosts 5 major car rental companies, with daily rates averaging $63 for economy cars. Top options include:

• Ice Rental 4x4
• Fair Car
• Budget
• Alamo
• Europcar

Flights from St. Louis to Reykjavik Keflavik Intl Airport usually depart from Lambert-St Louis (STL) and arrive at Reykjavik Keflavik Intl (KEF).

One-stop flights from St. Louis to Reykjavik Keflavik Intl Airport most commonly connect through:

• Chicago O'Hare Intl (ORD) - 38% of one-stop connections
• Minneapolis St Paul (MSP) - 23% of one-stop connections
• Baltimore/Washington (BWI) - 15% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 7% of one-stop connections

Yes. Flexible dates can save you up to 32% on flights from St. Louis to Reykjavik Keflavik Intl Airport. Monday is the cheapest departure day at $784 round-trip on average, while Wednesday is the most expensive at $1,143, a difference of $359.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 9h 37m, compared with 9h 45m via Detroit Metropolitan Wayne County (DTW) and 10h 03m via Chicago O'Hare Intl (ORD).

Reykjavik Keflavik Intl Airport is 5 hours ahead of St. Louis (Greenwich Mean Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Reykjavik Keflavik Intl Airport are Harpa, Laugardalsholl and The Settlement Exhibition: Reykjavík 871±2. These are among the most viewed places in Reykjavik Keflavik Intl Airport on KAYAK.

Among airlines operating St. Louis to Reykjavik Keflavik Intl Airport flights:

• Icelandair: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Icelandair: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.