Cheap flights from St. Louis to Reykjavik from $495
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Reykjavik departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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British Airways flights from St. Louis to Reykjavik Keflavik Intl Airport
Our best British Airways deals on St. Louis to Reykjavik Keflavik Intl Airport flight tickets
KLM flights from St. Louis to Reykjavik Keflavik Intl Airport
Our best KLM deals on St. Louis to Reykjavik Keflavik Intl Airport flight tickets
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How to get the cheapest flight ticket from St. Louis to Reykjavik Keflavik Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Reykjavik Keflavik Intl Airport?
The month of May is, on average, the cheapest month to fly to Reykjavik Keflavik Intl Airport from St. Louis, with most prices found around $736. If you’re not able to fly to Reykjavik Keflavik Intl Airport in May, then April is your next best option. Flight prices from St. Louis to Reykjavik Keflavik Intl Airport during April average around $752.
What is the cheapest day to depart on your flight to Reykjavik Keflavik Intl Airport?
The cheapest day to depart from St. Louis to Reykjavik Keflavik Intl Airport is on a Wednesday when prices can be found for as low as $792. The most expensive day to fly to Reykjavik Keflavik Intl Airport is Thursday, with ticket prices averaging around $1,102.
What is the cheapest airline that flies from Lambert-St Louis to Reykjavik Keflavik Intl?
Air Canada, Air France, and United Airlines are the most popular carriers operating from Lambert-St Louis to Reykjavik Keflavik Intl
What airlines fly to Reykjavik Keflavik Intl Airport?
United Airlines, Delta and KLM are the top three most popular airlines that fly to Reykjavik Keflavik Intl Airport from St. Louis according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Reykjavik Keflavik Intl Airport. Keep in mind that there are 4 different airlines that fly to Reykjavik Keflavik Intl Airport on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Reykjavik Keflavik Intl Airport
Cheap St. Louis to Reykjavik Keflavik Intl Airport (STL to KEF) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Reykjavik Keflavik Intl Airport
How far is Lambert-St Louis to Reykjavik Keflavik Intl by plane?
A flight from Lambert-St Louis to Reykjavik Keflavik Intl will travel around 3192.8 mi. Typically, this will take 8h 30m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Reykjavik Keflavik Intl Airport?
Prices for flights from Lambert-St Louis Airport to Reykjavik Keflavik Intl Airport were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Reykjavik Keflavik Intl Airport?
There are 4 operators available for flights from Lambert-St Louis Airport to Reykjavik Keflavik Intl Airport as of July 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Reykjavik Keflavik Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Reykjavik Keflavik Intl Airport.
What documentation or ID do you need to fly to Reykjavik Keflavik Intl Airport?
The necessary travel and health documents for your Reykjavik Keflavik Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Reykjavik Keflavik Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Reykjavik Keflavik Intl Airport is United Airlines (32% of total bookings). The next most popular airlines are Delta (28%), KLM (23%), and Air Canada (16%).
Best airlines flying from St. Louis to Reykjavik Keflavik Intl Airport
Compare and see reviews for airlines that fly from St. Louis to Reykjavik Keflavik Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $566 | Free Cancellation | Rating 7.1 9,681 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $636 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $828 | Free Cancellation | Rating 7.8 1,367 reviews |
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Why should I use momondo to find a flight deal from St. Louis to Reykjavik?
Finding the right flight to Reykjavik from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Reykjavik quick and easy, saving you time and money.
Can I find flights from St. Louis to Reykjavik with flexible booking policies on momondo?
Flights from St. Louis to Reykjavik with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from St. Louis to Reykjavik?
Once all potential St. Louis to Reykjavik flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from St. Louis to Reykjavik right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of St. Louis to Reykjavik flights. All you need is a valid email address and we will do the rest; it is that quick and easy.