What is the cheapest airline that flies from Lambert-St Louis to Reykjavik?

KLM and Delta are the most popular carriers operating from Lambert-St Louis to Reykjavik

What airlines fly to Reykjavik?

United Airlines, Delta and KLM are the top three most popular airlines that fly to Reykjavik from St. Louis according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Reykjavik. Keep in mind that there are 4 different airlines that fly to Reykjavik on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Lambert-St Louis Airport to Reykjavik?

Prices for flights from Lambert-St Louis Airport to Reykjavik were last updated today.

How many operators does momondo search for flights from Lambert-St Louis Airport to Reykjavik?

As of December 2025, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Reykjavik.

How old do you have to be to fly from Lambert-St Louis Airport to Reykjavik?

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.

What documentation or ID do you need to fly to Reykjavik?

The necessary travel and health documents for your Reykjavik 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.

$443 Cheap Flights from St. Louis to Reykjavik in 2025/26

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Find the cheapest flights from St. Louis to Reykjavik

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:42 pm - 6:05 am

STL

KEF

30h 23m2 stops

4:55 pm - 10:02 am

KEF

STL

23h 07m1 stop

$766Multiple Airlines

Tue, Feb 3 - Tue, Feb 10

11:51 am - 9:30 am

STL

KEF

16h 39m2 stops

11:25 am - 8:31 pm

KEF

STL

14h 06m2 stops

$804Virgin Atlantic

Thu, Apr 23 - Sat, May 2

6:00 am - 6:15 am

STL

KEF

19h 15m1 stop

5:15 pm - 7:13 am

KEF

STL

18h 58m1 stop

$811Multiple Airlines

Sun, Mar 8 - Wed, Mar 18

9:35 am - 6:15 am

STL

KEF

14h 40m1 stop

5:15 pm - 10:34 pm

KEF

STL

35h 19m1 stop

$853Multiple Airlines

Sun, Jan 11 - Fri, Jan 16

12:00 pm - 11:20 pm

STL

KEF

29h 20m2 stops

7:35 am - 11:37 pm

KEF

STL

22h 02m2 stops

$890Scandinavian Airlines

Thu, Jan 22 - Mon, Jan 26

7:00 am - 6:00 am

STL

KEF

18h 00m1 stop

7:50 pm - 2:11 pm

KEF

STL

23h 21m1 stop

$904Multiple Airlines

Sat, Apr 18 - Wed, Apr 22

1:30 pm - 11:50 pm

STL

KEF

29h 20m2 stops

10:30 am - 8:49 pm

KEF

STL

39h 19m2 stops

$918Scandinavian Airlines

Sat, Apr 18 - Wed, Apr 22

8:36 pm - 6:05 am

STL

KEF

27h 29m2 stops

4:55 pm - 10:02 am

KEF

STL

23h 07m1 stop

$928Multiple Airlines

Sun, Feb 15 - Fri, Feb 20

1:14 pm - 11:30 pm

STL

KEF

29h 16m2 stops

2:20 pm - 1:30 pm

KEF

STL

28h 10m1 stop

$1,026Lufthansa

Thu, Apr 23 - Sat, May 2

7:00 am - 6:15 am

STL

KEF

17h 15m1 stop

5:00 pm - 1:51 pm

KEF

STL

26h 51m1 stop

$1,068Multiple Airlines

Sun, Feb 15 - Fri, Feb 20

Scandinavian Airlines flights from St. Louis to Reykjavik

Our best Scandinavian Airlines deals on St. Louis to Reykjavik flight tickets

Scandinavian Airlines

Jan 22

STL12:00 pmLambert-St Louis

29h 20m

2 stops

KEF11:20 pmReykjavik Keflavik Intl

Jan 26

KEF7:35 amReykjavik Keflavik Intl

22h 02m

2 stops

STL11:37 pmLambert-St Louis

$890

Find similar

Scandinavian Airlines

Apr 18

STL1:30 pmLambert-St Louis

29h 20m

2 stops

KEF11:50 pmReykjavik Keflavik Intl

Apr 22

KEF10:30 amReykjavik Keflavik Intl

39h 19m

2 stops

STL8:49 pmLambert-St Louis

$918

Find similar

Scandinavian Airlines

Jan 22

STL12:00 pmLambert-St Louis

21h 25m

2 stops

KEF3:25 pmReykjavik Keflavik Intl

Jan 26

KEF7:35 amReykjavik Keflavik Intl

22h 02m

2 stops

STL11:37 pmLambert-St Louis

$1,105

Find similar

British Airways flights from St. Louis to Reykjavik

Our best British Airways deals on St. Louis to Reykjavik flight tickets

British Airways

Mar 14

STL2:25 pmLambert-St Louis

21h 40m

2 stops

KEF5:05 pmReykjavik Keflavik Intl

Mar 23

KEF11:50 amReykjavik Keflavik Intl

35h 11m

2 stops

STL6:01 pmLambert-St Louis

$1,385

Find similar

British Airways

Mar 14

STL6:33 pmLambert-St Louis

35h 22m

2 stops

KEF10:55 amReykjavik Keflavik Intl

Mar 23

KEF11:50 amReykjavik Keflavik Intl

35h 11m

2 stops

STL6:01 pmLambert-St Louis

$1,394

Find similar

British Airways

Mar 12

STL4:36 pmLambert-St Louis

37h 19m

2 stops

KEF10:55 amReykjavik Keflavik Intl

Mar 21

KEF11:55 amReykjavik Keflavik Intl

40h 53m

2 stops

STL11:48 pmLambert-St Louis

$1,427

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 2/3

5:42 pm-6:05 am

2 stops30h 23m

Reykjavik Keflavik Intl

Tue 2/10

4:55 pm-10:02 am

1 stop23h 07m

$766

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 4/23

11:51 am-9:30 am

2 stops16h 39m

Reykjavik Keflavik Intl

Sat 5/2

11:25 am-8:31 pm

2 stops14h 06m

$804

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 3/8

6:00 am-6:15 am

1 stop19h 15m

Reykjavik Keflavik Intl

Wed 3/18

5:15 pm-7:13 am

1 stop18h 58m

$811

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 1/11

9:35 am-6:15 am

1 stop14h 40m

Reykjavik Keflavik Intl

Fri 1/16

5:15 pm-10:34 pm

1 stop35h 19m

$853

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 1/22

12:00 pm-11:20 pm

2 stops29h 20m

Reykjavik Keflavik Intl

Mon 1/26

7:35 am-11:37 pm

2 stops22h 02m

$890

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 4/18

7:00 am-6:00 am

1 stop18h 00m

Reykjavik Keflavik Intl

Wed 4/22

7:50 pm-2:11 pm

1 stop23h 21m

$904

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 4/18

1:30 pm-11:50 pm

2 stops29h 20m

Reykjavik Keflavik Intl

Wed 4/22

10:30 am-8:49 pm

2 stops39h 19m

$918

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 2/15

8:36 pm-6:05 am

2 stops27h 29m

Reykjavik Keflavik Intl

Fri 2/20

4:55 pm-10:02 am

1 stop23h 07m

$928

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 4/23

1:14 pm-11:30 pm

2 stops29h 16m

Reykjavik Keflavik Intl

Sat 5/2

2:20 pm-1:30 pm

1 stop28h 10m

$1,026

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 2/15

7:00 am-6:15 am

1 stop17h 15m

Reykjavik Keflavik Intl

Fri 2/20

5:00 pm-1:51 pm

1 stop26h 51m

$1,068

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Reykjavik

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

Prices

Airlines

What is the cheapest day to depart on your flight to Reykjavik?

Our data shows that Tuesday is the least expensive day to fly to Reykjavik. Tickets to fly out on this day can be as low as $807. Flights from St. Louis to Reykjavik on a Thursday will generally be more expensive and average around $1,216. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Reykjavik?

Flying to Reykjavik from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $846 when looking at flights departing in the morning. Flights to Reykjavik are more costly in the afternoon, with an average ticket price of $1,040. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from St. Louis to Reykjavik

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Reykjavik according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Reykjavik (STL to REK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Reykjavik

Fastest flight time	10h 12m
Direct flights	None

The fastest flight from St. Louis to Reykjavik takes 10h 12m

There are no direct flights from St. Louis to Reykjavik. There are no popular flight routes from St. Louis to Reykjavik.

Search flight deals

How far is Lambert-St Louis to Reykjavik by plane?
Reykjavik is 3212.7 mi away from Lambert-St Louis. Typically, this will take 14h 25m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Reykjavik?
Prices for flights from Lambert-St Louis Airport to Reykjavik were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Reykjavik?
As of December 2025, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Reykjavik.
How old do you have to be to fly from Lambert-St Louis Airport to Reykjavik?
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.
What documentation or ID do you need to fly to Reykjavik?
The necessary travel and health documents for your Reykjavik 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?
Based on momondo bookings for flights between St. Louis and Reykjavik, the leading airline is Delta, making up 34% of the total bookings. Other popular airlines include United Airlines with 27%, Air Canada with 25%, and KLM with 15%.

Best airlines flying from St. Louis to Reykjavik

Compare and see reviews for airlines that fly from St. Louis to Reykjavik with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $566	Free Cancellation	Rating 7.1 10,502 reviews	Search Air Canada flights
United Airlines	PriceFrom $595	Free Cancellation	Rating 7.4 9,064 reviews	Search United Airlines flights
Delta	PriceFrom $636	Free Cancellation	Rating 7.9 8,010 reviews	Search Delta flights
KLM	PriceFrom $828	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights

Selfoss

Hella

Hveragerdi

Borgarnes

Kopavogur

Why use momondo?

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?

Yes. All flights to Reykjavik from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Reykjavik?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Reykjavik from St. Louis.

I’m not ready to book a flight from St. Louis to Reykjavik right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Reykjavik now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Reykjavik and let you know when they change.

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Find better results for your trip to Iceland

Fly into one of these airports located in Reykjavik

Reykjavik Keflavik Intl Airport

Reykjavik Domestic Airport

Cheap flights from St. Louis to Reykjavik from $443

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 3/12. 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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Filter for what you want

Filter for what you want

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Find the cheapest flights from St. Louis to Reykjavik

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Scandinavian Airlines flights from St. Louis to Reykjavik

Our best Scandinavian Airlines deals on St. Louis to Reykjavik flight tickets

British Airways flights from St. Louis to Reykjavik

Our best British Airways deals on St. Louis to Reykjavik flight tickets

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How to get the cheapest flight ticket from St. Louis to Reykjavik

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 day to depart on your flight to Reykjavik?

What is the cheapest time of day to depart on your flight to Reykjavik?

What is the cheapest airline that flies from Lambert-St Louis to Reykjavik?

KLM and Delta are the most popular carriers operating from Lambert-St Louis to Reykjavik

What airlines fly to Reykjavik?

When to book flights from St. Louis to Reykjavik

Cheap St. Louis to Reykjavik (STL to REK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Reykjavik

Fastest flight time

Direct flights

How far is Lambert-St Louis to Reykjavik by plane?

When did momondo last update prices for flights from Lambert-St Louis Airport to Reykjavik?

How many operators does momondo search for flights from Lambert-St Louis Airport to Reykjavik?

How old do you have to be to fly from Lambert-St Louis Airport to Reykjavik?

What documentation or ID do you need to fly to Reykjavik?

What is the most popular airline from St. Louis to Reykjavik?

Best airlines flying from St. Louis to Reykjavik

Compare and see reviews for airlines that fly from St. Louis to Reykjavik with momondo

Traveling to a place near Reykjavik?

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Reykjavik?

Can I find flights from St. Louis to Reykjavik with flexible booking policies on momondo?

How can momondo help me find flights from St. Louis to Reykjavik?

I’m not ready to book a flight from St. Louis to Reykjavik right now. Can momondo alert me if prices change?

An easier way to manage your Reykjavik trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Iceland

Fly into one of these airports located in Reykjavik

Airports listed have a maximum distance of 23.0 mi from Reykjavik