Cheap flights from St Louis to Reykjavik

Compare St Louis to Reykjavik flight deals

Find the cheapest month or even day of the year to fly to Reykjavik

Book the best Reykjavik fare with no extra fees

Flight deals from St Louis to Reykjavik

Looking for a cheap last-minute deal or the best round-trip flight from St Louis Airport to Reykjavik? If you want to travel next month, round-trip fares start from $708. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from St Louis to Reykjavik

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Reykjavik flights are currently cheapest in June.

Alternative St Louis to Reykjavik routes

Looking for the cheapest, fastest or easiest route from St Louis to Reykjavik? You could fly into the following airports instead.

St Louis to Reykjavik: Flight information

The things to know before you go.
Cheapest flight found$708
Cheapest month to flyJune

Finding cheap flights from St Louis to Reykjavik: Frequently asked questions

There are 2 airports in Reykjavik: Reykjavik Domestic and Reykjavik Keflavik.
The best price we found for a round-trip flight from St Louis to Reykjavik is $708. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Reykjavik. But we found flights with one or more stops from $708.
There are no flights flying from St Louis to Reykjavik, as of May 2026.
The cheapest month to fly from St Louis to Reykjavik is usually June.
If you're flying from St Louis Airport, the cheapest airport near Reykjavik is Reykjavik Keflavik – which is 37.4 km away from the center of Reykjavik. We've found flights to this airport from $708.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Reykjavik on Tuesday, June 2, 2026.
No airlines currently offer direct flights between St Louis Airport and Reykjavik. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Reykjavik but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Reykjavik is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 5°C. July is typically the warmest month in Reykjavik, when it usually averages around 13°C. You can expect the least rain in June. The coldest month is January, with temperatures averaging -3°C. The rainiest month is February.
Currently, Frontier Airlines offers the cheapest flight tickets to Reykjavik.

Traveling from Lambert-St. Louis International Airport (STL) to Reykjavik: what you need to know

  • The timezone in Reykjavik is UTC+0. The city is five hours ahead of St Louis, where Lambert-St. Louis International Airport is located.

  • To avoid missing your STL to Reykjavik flight, allow plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and an hour before domestic flights is the general travel rule.

  • Traveling during a peak period like public or school holidays? Expect longer lines at security and check-in. To play it safe, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • Think about adding a stopover to potentially land a cheaper flight ticket from STL to Reykjavik. Simply uncheck 'Direct flights only' during your search. Give yourself a breather (and maybe even a better deal) by stopping at one of these popular airports:

    • O'Hare International Airport (ORD)

    • Logan International Airport (BOS)

    • Pearson International Airport (YYZ)

  • Located around 16 kilometers from central St Louis, STL can be reached in about 20 minutes by car. The journey on public transport takes roughly 35 minutes.

  • Looking for a hotel close to STL? If you're catching an early flight from Lambert-St. Louis International Airport to Reykjavik, these stays set you up for a seamless send-off:

  • 78.04% of flights that leave from Lambert-St. Louis International Airport make it to their destination on time.

  • You'll find STL at 10701 Lambert International Blvd..

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Reykjavik

  • The lowest price we've seen for a one-way Lambert-St. Louis International Airport to Reykjavik flight is $433. The cheapest price for a return flight is $708. Keep in mind fares may change due to availability at the time of booking.

  • Booking early is often the key to scoring a cheap flight from STL to Reykjavik. Airlines adjust prices based on demand, so the closer your departure date, the more you'll likely spend.

  • If you have flexibility with your trip dates, take advantage of the 'Whole month' tool. It'll show you the lowest price across every month when looking for a Lambert-St. Louis International Airport to Reykjavik ticket.

  • Save time searching for cheap flights from STL to Reykjavik by setting up a Price Alert. You'll receive an email or push notification on the app when a special offer becomes available.

  • Pick your ideal departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Lambert-St. Louis International Airport to Reykjavik by 'Best,' 'Fastest' or 'Cheapest.'

Airports in Reykjavik

Keflavik International Airport (KEF)

  • Keflavik International Airport (KEF) is around 48 kilometers from central Reykjavik. If you're grabbing a cab or a ride-share, the drive takes roughly 50 minutes.

  • If you're taking public transport, expect a journey time of about 1 hour 15 minutes.

  • The last thing you need is a long journey to your hotel if you're landing late on a flight from Lambert-St. Louis International Airport to Reykjavik. Book one of these accommodation options near KEF instead:

  • Travel at your own pace with a Keflavik International Airport rental car. Pick up your wheels from Ice Rental 4x4, FairCar or Flizzr and discover more of Reykjavik and beyond.

  • To get the best deal, book your ride from Keflavik International Airport about four weeks in advance of your flight from STL to Reykjavik.

Reykjavik International Airport (RKV)

  • After your flight from Lambert-St. Louis International Airport to Reykjavik has arrived, you can get to the city center in about 5 minutes by car. Central Reykjavik is roughly 2 kilometers from Reykjavik International Airport (RKV).

  • The journey will take roughly 25 minutes on public transport.

  • Hang up the 'Do not disturb' sign and unwind at a hotel close to RKV. Here are a few options where you can kick back after your STL to Reykjavik flight:

  • The fastest way to reach your destination is with a Reykjavik International Airport rental car. Collect a set of wheels from Europcar, RAS Car Rental or Hertz and be off and running.

  • Get the lowest price by securing your ride from RKV three weeks ahead of time. You can also expect to have a wider range of vehicles.

Best time to go to Reykjavik

  • Before locking in your flights from Lambert-St. Louis International Airport to Reykjavik, consider which time of year works best for you. Peak season in Reykjavik offers a lively atmosphere and plenty of activities, while the off-season brings better deals on hotels and fewer crowds.

  • Lock in a Lambert-St. Louis International Airport to Reykjavik flight ticket with a departure in July if you want to experience the city during its warmest month. Expect temperatures to range from 8ºC (46ºF) to 15ºC (59ºF).

  • December has average temperatures of between -6ºC (21ºF) and 4ºC (39ºF). Look for a cheap ticket from STL to Reykjavik around that time if you'd rather travel in cooler conditions.

More about Reykjavik

  • Start your Reykjavik trip right by choosing the perfect place to stay. After booking your flight from Lambert-St. Louis International Airport to Reykjavik, check out our selection of hotels including:

  • There are so many things to do and see in this city it can be hard to figure out where to start. Perlan, Hallgrimskirkja silhouette and National Museum of Iceland are leading attractions which should feature on any well-planned Reykjavik itinerary.

Explore more of Iceland

  • Akureyri is just one of the many places in Iceland waiting to be explored after you've experienced Reykjavik. Around 241 kilometers away to the north-east, its top attractions include Akureyri Art Museum, Hof Cultural and Conference Center and Nonni's House.

  • Around 121 kilometers south-east of Reykjavik, Vestmannaeyjar is another favorite stop in Iceland. Experience this destination's highlights firsthand at Heimaklettur, Beautiful Puffin and Shore View and Skansinn.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.