Cheap Flights from St. Louis (STL) to Reykjavik (RKV)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Reykjavik Domestic Airport (RKV)

Alternative airports near Reykjavik

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Keflavik Intl. KEF. Cheapest option available. Average driving time to city center is 45 minutes. Flights from $796
KEF
Keflavik Intl.
Cheapest
Average driving time to city center45 min
Flights from $796
Flights from St. Louis (STL) to Reykjavik (RKV)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Reykjavik Domestic
Distance
3213 mi

St. Louis to Reykjavik Flights

The cheapest times to fly from St. Louis to Reykjavik

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Reykjavik are during the month of . You can find some of the cheapest flights from St. Louis to Reykjavik with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Reykjavik

Sunday is one of the best days to book for cheap flights from St. Louis to Reykjavik: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Reykjavik

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Reykjavik in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Reykjavik flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Reykjavik airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV) cost?
Snag a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV)?
is the least expensive month to fly from STL to RKV. Planning your trip for the off-season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to RKV flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to RKV?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a range of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV) last-minute?
Last-minute fares from STL to RKV are usually more expensive. To secure the best rates, start searching for flights as soon as possible. That said, if your travel plans are flexible, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a STL to RKV flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to RKV flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place takes the hassle out of travel planning. Simply pick your flights and choose from our wide range of stays, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Reykjavik Domestic Airport (RKV)?
You can usually reschedule or cancel your STL to RKV flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.