STL - KEF

$425 Find Cheap Flights from St. Louis to Reykjavik - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$732
Typical prices: $848-$1,247
United Airlines
Sun 11/11Mon 11/19
STL - KEF • 1 stop
Cheapest one-way
$425
Typical prices: $273-$595
Multiple Airlines
Mon 10/15
STL - KEF • 3 stops
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Reykjavik Keflavik Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
August
Cheapest • 21% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Toronto Pearson Intl (YYZ)
Cheapest • Avg $787 (round-trip)
Minneapolis St Paul (MSP)
Shortest trip • 9h 43m (one-way)
Insights
Insights
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We hope you love your trip to Reykjavik Keflavik Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Reykjavik (STL-KEF)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Reykjavik

Wed, Nov 11 - Thu, Nov 19
United Airlines Logo
10:53 am - 10:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
17h 07m1 stop Chicago O'Hare Intl
United Airlines Logo
12:00 pm - 6:09 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
12h 09m1 stop Chicago O'Hare Intl
$732United Airlines
Wed, Nov 11 - Thu, Nov 19
United Airlines Logo
8:50 am - 10:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
19h 10m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
12:00 pm - 4:59 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
10h 59m1 stop Chicago O'Hare Intl
$737United Airlines
Wed, Nov 11 - Thu, Nov 19
United Airlines Logo
1:40 pm - 10:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
14h 20m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
12:00 pm - 8:59 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
14h 59m2 stops Chicago O'Hare Intl Denver Intl
$737United Airlines
Wed, Nov 11 - Thu, Nov 19
Lufthansa Logo
1:40 pm - 10:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
14h 20m2 stops Denver Intl Chicago O'Hare Intl
Lufthansa Logo
12:00 pm - 8:59 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
14h 59m2 stops Chicago O'Hare Intl Denver Intl
$789Lufthansa
Thu, Sep 24 - Thu, Oct 1
Air Canada Logo
12:10 pm - 7:55 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
14h 45m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
10:00 am - 8:20 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
15h 20m1 stop Toronto Pearson Intl
$833Air Canada
Thu, Sep 24 - Thu, Oct 1
Air Canada Logo
12:10 pm - 7:55 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
14h 45m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
10:00 am - 12:13 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
31h 13m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$836Air Canada
Sat, Nov 7 - Wed, Nov 11
Multiple Airlines Logo
6:25 am - 6:30 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
18h 05m1 stop Baltimore/Washington
Multiple Airlines Logo
4:45 pm - 9:20 amKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
22h 35m1 stop Minneapolis St Paul
$852Multiple Airlines
Tue, Nov 3 - Sun, Nov 8
Multiple Airlines Logo
10:55 am - 6:30 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
13h 35m2 stops Chicago Midway Baltimore/Washington
Multiple Airlines Logo
4:45 pm - 9:20 amKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
22h 35m1 stop Minneapolis St Paul
$852Multiple Airlines
Thu, Sep 24 - Tue, Sep 29
Delta Logo
8:46 am - 7:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
17h 14m1 stop Minneapolis St Paul
Delta Logo
9:30 am - 7:58 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
15h 28m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson
$900Delta
Mon, Sep 21 - Mon, Sep 28
Delta Logo
10:29 am - 7:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
15h 31m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul
Delta Logo
9:30 am - 8:35 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
16h 05m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County
$1,359Delta
Booking Insights

Price, demand and travel trends for St. Louis to Reykjavik Keflavik Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Reykjavik Keflavik Intl Airport with more confidence.

How much is a round-trip flight from St. Louis to Reykjavik Keflavik Intl Airport?

Round-trip flights from St. Louis to Reykjavik Keflavik Intl Airport start at $732. Prices are below average for this route right now, with typical round-trip fares ranging from $848 to $1,247. The lowest price found in the past 5 days was $732 on United Airlines.

What's the cheapest day of the week to fly from St. Louis to Reykjavik Keflavik Intl Airport?

Monday is the cheapest day of the week to fly from St. Louis to Reykjavik Keflavik Intl Airport, it is 24% cheaper than the average day. Saturday is the most expensive day with flight prices 8% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Key details for St. Louis to Reykjavik Keflavik Intl Airport flights

Low season

February

Cheapest flight

$425
Best time to beat the crowds but there is an average 155% increase in price.
Most popular time to fly with an average 9% increase in price.
Flight from St. Louis to Reykjavik Keflavik Intl Airport

When to book flights from St. Louis to Reykjavik

Are your dates flexible? Find out the best times to travel from St. Louis to Reykjavik based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Reykjavik Keflavik Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from St. Louis to Reykjavik Keflavik Intl Airport?

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

  • What cabin classes can I book on flights from St. Louis to Reykjavik Keflavik Intl Airport?

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

    • Economy Class
    • Premium Economy Class

  • Which airports do connecting flights from St. Louis to Reykjavik Keflavik Intl Airport pass through?

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

    • Chicago O'Hare Intl (ORD) - 47% of one-stop connections
    • Minneapolis St Paul (MSP) - 19% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) - 11% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 6% of one-stop connections

    Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from St. Louis to Reykjavik Keflavik Intl Airport?

    Yes. Being flexible with your travel dates can save you up to 30% on the St. Louis to Reykjavik Keflavik Intl Airport route. Monday is the cheapest departure day at $784 round-trip on average, while Saturday is the most expensive at $1,119, a difference of $335. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Reykjavik Keflavik Intl Airport?

    Some of the most popular sights in Reykjavik Keflavik Intl Airport are Hallgrímskirkja, Reykjavik City Centre and Reykjavik Harbour. These are among the most viewed places in Reykjavik Keflavik Intl Airport on KAYAK.

  • How long is a flight from St. Louis to Reykjavik Keflavik Intl Airport?

    A nonstop flight from St. Louis to Reykjavik Keflavik Intl Airport takes 0h 00m, covering 3,191 miles.

  • Do I need a passport to fly from St. Louis to Reykjavik Keflavik Intl Airport?

    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.

  • Have flight prices from St. Louis to Reykjavik Keflavik Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $732 to $4,497. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from St. Louis to Reykjavik Keflavik Intl Airport looking right now?

    One-way fares from St. Louis to Reykjavik Keflavik Intl Airport are currently lower than usual. Average one-way flight prices are about $507, which is 13% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from St. Louis to Reykjavik Keflavik Intl Airport?

    Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 9h 43m, compared with 9h 53m via Detroit Metropolitan Wayne County (DTW) and 10h 02m via Chicago O'Hare Intl (ORD).

  • What is the time difference between St. Louis and Reykjavik Keflavik Intl Airport?

    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.

  • What car rental options are available at Reykjavik Keflavik Intl Airport (KEF)?

    Reykjavik Keflavik Intl Airport (KEF) hosts 5 major car rental companies, with daily rates starting from around $16 for economy cars. Top options include:
    · Ice Rental 4x4
    · Fair Car
    · Budget
    · Europcar
    · Alamo

  • How much should I expect to pay for a St. Louis to Reykjavik Keflavik Intl Airport flight?

    Round-trip flights from St. Louis to Reykjavik Keflavik Intl Airport range from $848 to $1,247, with an average of $1,027 over the past 12 months. Anything below $848 counts as a good deal.

Your guide to booking St. Louis to Reykjavik Keflavik Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average $784 - about $335 less than Saturday (30% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Reykjavik Keflavik Intl Airport trip for August. Fares historically average $812 round-trip in that month - typically $1,809 less than the most expensive month, which is February (based on the last 12 months).

Everything you need to know for your flight from St. Louis to Reykjavik

Information on your arrival and departure airports

St. Louis (STL)
Keflavik Intl (KEF)