What are the cheapest airlines flying from St. Louis to Reykjavik Keflavik Intl Airport round-trip?

Our cheapest airline available from St. Louis to Reykjavik Keflavik Intl Airport is Lufthansa. Our recent data shows that you can find tickets from as low as $779 on this airline. Additional options worth looking into are KLM and Scandinavian Airlines, starting at $780 and $820 round-trip. Lufthansa is 14% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from St. Louis to Reykjavik Keflavik Intl Airport?

Travelers seeking maximum savings on their St. Louis to Reykjavik Keflavik Intl Airport flight should consider departing on Wednesday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Reykjavik Keflavik Intl Airport?

Before booking your flight from St. Louis to Reykjavik Keflavik Intl Airport check out the most popular airlines for this route: Air Canada, Delta or KLM.

What is the cheapest day to fly round-trip from St. Louis to Reykjavik Keflavik Intl Airport?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 39% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

Find a great deal and save up to 70% by booking at least 29 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Reykjavik Keflavik Intl Airport within the next two weeks, with the cheapest ticket starting at $1,145.

What is the cheapest month to fly from St. Louis to Reykjavik Keflavik Intl Airport?

The best pricing can be found in the month of April. Prices to Reykjavik Keflavik Intl Airport from St. Louis average $1,045. You can even find prices in April for less than $1,045, as users have found deals to Reykjavik Keflavik Intl Airport from as low as $617. The month of November appears to be one of the more expensive times to travel to Reykjavik Keflavik Intl Airport from St. Louis. Flying in the targeted month can save you up to 134%.

Most accurate provider : When it comes to deals on St. Louis-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from St. Louis to Reykjavik Keflavik Intl?

Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Reykjavik Keflavik Intl from St. Louis. Booking flights from Lambert-St Louis (STL) to Reykjavik Keflavik Intl should be relatively easy as there are 0 daily outbound flights to Reykjavik Keflavik Intl from 4 different airlines.

Can I find deals for flights from St. Louis to Keflavik Intl that include hotel bookings?

Yes. In addition to deals on St. Louis to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Keflavik Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Keflavik Intl.

Can I find deals for business class flights from St. Louis to Keflavik Intl?

Yes. Cheapflights offers flight deals from St. Louis to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$672+ Flights from St. Louis to Reykjavik Keflavik Intl Airport

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1. Tell us where you want to go

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Cheap flight deals from St. Louis to Keflavik Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$672 (KLM)
Popular in	November
Cheapest in	December
Average price	$778

Provider with most accurate pricing for Lambert-St Louis-Reykjavik Keflavik Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Reykjavik Keflavik Intl flights.

Search Deals

From Lambert-St Louis to Reykjavik Keflavik Intl

Search Deals

High demand for flights, 1% potential price rise

Search Deals

Best time to find cheap flights, 2% potential price drop

Search Deals

Average for round-trip flights in December 2024

Search Deals

Find flight deals from St. Louis to Keflavik Intl

Cheapest flights from St. Louis to Keflavik Intl
Explore the most affordable flight options available from St. Louis to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

Tue 12/1712:15 pmSTL - KEF

2 stops12h 25mMultiple Airlines

Tue 12/244:55 pmKEF - STL

1 stop21h 18mMultiple Airlines

Deal found 12/16

$1,434

Best flights from St. Louis to Keflavik Intl
Discover carefully curated flight deals from St. Louis to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2024.

Mon 5/1212:00 pmSTL - KEF

1 stop16h 30mMultiple Airlines

Fri 5/2311:25 amKEF - STL

2 stops14h 17mMultiple Airlines

Deal found 12/17

$672

Sun 5/45:31 pmSTL - KEF

2 stops25h 04mLufthansa

Sat 5/102:20 pmKEF - STL

1 stop28h 10mLufthansa

Deal found 12/17

$779

Mon 5/1210:10 amSTL - KEF

2 stops18h 20mKLM

Fri 5/2311:25 amKEF - STL

2 stops14h 17mKLM

Deal found 12/17

$780

Wed 1/292:00 pmSTL - KEF

2 stops27h 20mScandinavian Airlines

Wed 2/57:35 amKEF - STL

2 stops22h 01mScandinavian Airlines

Deal found 12/17

$820

Sat 4/196:25 pmSTL - KEF

2 stops17h 30mFinnair

Fri 4/255:40 pmKEF - STL

2 stops33h 16mFinnair

Deal found 12/16

$877

Mon 5/265:18 pmSTL - KEF

1 stop10h 12mUnited Airlines

Sun 6/112:00 pmKEF - STL

1 stop14h 04mUnited Airlines

Deal found 12/16

$1,353

Fri 3/216:29 pmSTL - KEF

2 stops35h 11mBritish Airways

Sun 3/236:20 pmKEF - STL

2 stops28h 39mBritish Airways

Deal found 12/16

$1,424

Last-minute flights from St. Louis to Keflavik Intl
Discover last-minute flight deals from St. Louis to Keflavik Intl. Data last updated December 18, 2024 and is based on user searches.

Thu 12/2610:09 pmSTL - KEF

1 stop25h 56mMultiple Airlines

Tue 12/317:40 amKEF - STL

2 stops21h 48mMultiple Airlines

Deal found 12/16

$2,232

Fri 1/2412:15 pmSTL - KEF

2 stops12h 25mMultiple Airlines

Mon 1/273:20 pmKEF - STL

3 stops29h 23mMultiple Airlines

Deal found 12/16

$885

Wed 1/292:00 pmSTL - KEF

2 stops27h 20mScandinavian Airlines

Wed 2/57:35 amKEF - STL

2 stops22h 01mScandinavian Airlines

Deal found 12/17

$820

Find flights from St. Louis to Keflavik Intl within your budget

Fly from

Fly to

Route

Depart

Return

Price

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 5/12

12:00 pm-9:30 am

1 stop16h 30m

Reykjavik Keflavik Intl

Fri 5/23

11:25 am-8:42 pm

2 stops14h 17m

$672

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 5/4

5:31 pm-11:35 pm

2 stops25h 04m

Reykjavik Keflavik Intl

Sat 5/10

2:20 pm-1:30 pm

1 stop28h 10m

$779

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 5/12

10:10 am-9:30 am

2 stops18h 20m

Reykjavik Keflavik Intl

Fri 5/23

11:25 am-8:42 pm

2 stops14h 17m

$780

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 1/29

2:00 pm-11:20 pm

2 stops27h 20m

Reykjavik Keflavik Intl

Wed 2/5

7:35 am-11:36 pm

2 stops22h 01m

$820

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 4/19

6:25 pm-4:55 pm

2 stops17h 30m

Reykjavik Keflavik Intl

Fri 4/25

5:40 pm-9:56 pm

2 stops33h 16m

$877

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 5/26

5:18 pm-8:30 am

1 stop10h 12m

Reykjavik Keflavik Intl

Sun 6/1

12:00 pm-9:04 pm

1 stop14h 04m

$1,353

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 3/21

6:29 pm-10:40 am

2 stops35h 11m

Reykjavik Keflavik Intl

Sun 3/23

6:20 pm-5:59 pm

2 stops28h 39m

$1,424

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Compare providers for flights from St. Louis to Keflavik Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Keflavik Intl in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to Keflavik Intl

Get recent, data-driven insights about flights from St. Louis to Keflavik Intl including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Reykjavik Keflavik Intl Airport (average of $328). Flying from St. Louis to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to KEF?

When flying from St. Louis to Reykjavik Keflavik Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 19% versus a flight in the afternoon.

Rainfall in Keflavik Intl by month

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Keflavik Intl

KLM

7.8

Good

1,349 reviews

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

KLM

7.8

Good

1,349 reviews

KLM

7.8

Good

1,349 reviews

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Finnair

7.7

Good

1,285 reviews

KLM

7.8

Good

1,349 reviews

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

United Airlines

7.4

Good

9,059 reviews

KLM

7.8

Good

1,349 reviews

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Scandinavian Airlines

7.3

Good

1,309 reviews

KLM

7.8

Good

1,349 reviews

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Lufthansa

6.8

Okay

7,091 reviews

KLM

7.8

Good

1,349 reviews

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Related info for your journey

What airport do you fly from for flights from St. Louis to Reykjavik Keflavik Intl?
Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Reykjavik Keflavik Intl from St. Louis. Booking flights from Lambert-St Louis (STL) to Reykjavik Keflavik Intl should be relatively easy as there are 0 daily outbound flights to Reykjavik Keflavik Intl from 4 different airlines.
What are the cheapest airlines flying from St. Louis to Reykjavik Keflavik Intl Airport round-trip?
Our cheapest airline available from St. Louis to Reykjavik Keflavik Intl Airport is Lufthansa. Our recent data shows that you can find tickets from as low as $779 on this airline. Additional options worth looking into are KLM and Scandinavian Airlines, starting at $780 and $820 round-trip. Lufthansa is 14% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from St. Louis to Keflavik Intl that include hotel bookings?
Yes. In addition to deals on St. Louis to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Keflavik Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Keflavik Intl.
Can I find deals for business class flights from St. Louis to Keflavik Intl?
Yes. Cheapflights offers flight deals from St. Louis to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Reykjavik Keflavik Intl Airport?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Reykjavik Keflavik Intl Airport (average of $328). Flying from St. Louis to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 4 airlines flying from St. Louis to Keflavik Intl

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$568	Average$977	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$595	Average$922	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$666	Average$873	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$675	Average$1,142	FlexibilityNo cancel fee	On-time75%

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$672+ Cheap flights from St. Louis (STL) to Keflavik Intl (KEF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Keflavik Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Keflavik Intl

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Keflavik Intl

Cheapest flights from St. Louis to Keflavik IntlExplore the most affordable flight options available from St. Louis to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

Explore the most affordable flight options available from St. Louis to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

Find flights from St. Louis to Keflavik Intl within your budget

Compare providers for flights from St. Louis to Keflavik Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Keflavik Intl in December.

Best time to book a flight from St. Louis to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from St. Louis with our price prediction graph.

Travel insights for flights from St. Louis to Keflavik Intl

Get recent, data-driven insights about flights from St. Louis to Keflavik Intl including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

What is the cheapest time of day to fly from STL to KEF?

Find hourly flight availability from St. Louis to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Keflavik Intl

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to Reykjavik Keflavik Intl?

What are the cheapest airlines flying from St. Louis to Reykjavik Keflavik Intl Airport round-trip?

Can I find deals for flights from St. Louis to Keflavik Intl that include hotel bookings?

How can I find direct flights from St. Louis to Keflavik Intl?

Can I find deals for business class flights from St. Louis to Keflavik Intl?

What is the cheapest month to book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from St. Louis to Keflavik Intl

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Cheapest flights from St. Louis to Keflavik Intl
Explore the most affordable flight options available from St. Louis to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.