Cheap Flights From Lambert-St. Louis Intl. (STL) To Keflavik Intl. (KEF)

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Cheapest Flights from St. Louis (STL) to Reykjavik (KEF)

The cheapest flights to Keflavik Intl. found within the past 7 days were CA $1,142 round trip and CA $768 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,142 Roundtrip, found 2 days ago
CA $1,142
Roundtrip
found 2 days ago
Select Virgin Atlantic flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,142 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,242 Roundtrip, found 2 days ago
CA $1,242
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,242 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,245 Roundtrip, found 2 days ago
CA $1,245
Roundtrip
found 2 days ago
Select Virgin Atlantic flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,245 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,251 Roundtrip, found 2 days ago
CA $1,251
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,251 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,261 Roundtrip, found 2 days ago
CA $1,261
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,261 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,268 Roundtrip, found 2 days ago
CA $1,268
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,268 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,270 Roundtrip, found 2 days ago
CA $1,270
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,270 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,277 Roundtrip, found 2 days ago
CA $1,277
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,277 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,278 Roundtrip, found 2 days ago
CA $1,278
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,278 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,297 Roundtrip, found 2 days ago
CA $1,297
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,297 found 2 days ago
Thu, Oct. 2 - Tue, Oct. 7
STL
St. Louis
KEF
Reykjavik
CA $1,305 Roundtrip, found 2 days ago
CA $1,305
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Thu, Oct. 2 from St. Louis to Reykjavik, returning Tue, Oct. 7, priced at CA $1,305 found 2 days ago

Frequently asked questions

Are there direct flights from STL to Keflavik Intl. Airport (KEF)?
Unfortunately, there are no nonstop flights from STL to Keflavik Intl. Airport (KEF). However, there are airlines that operate flights with just one stopover. Have a look at United Airlines, Air Canada and Delta.
What airlines fly from STL to KEF?
With no direct flights available, it's a wise idea to plan well in advance when traveling between St. Louis Lambert International Airport and Keflavik Intl. Airport (KEF). Find a convenient route with minimal layovers and save yourself some time.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.