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Cheap flights from St. Louis to Reykjavik from $489

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 8/19. 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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0 bags

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Find the cheapest flights from St. Louis to Reykjavik

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
7:05 pm - 7:55 am
STL
-
KEF
31h 50m
2 stops
Air Canada Logo
9:15 am - 6:42 pm
KEF
-
STL
14h 27m
1 stop
$981Air Canada
Sat, Jul 4 - Fri, Jul 10
United Airlines Logo
7:05 pm - 7:55 am
STL
-
KEF
31h 50m
2 stops
United Airlines Logo
10:00 am - 12:11 pm
KEF
-
STL
31h 11m
2 stops
$983United Airlines
Sat, Jul 18 - Tue, Jul 28
Air Canada Logo
5:33 pm - 8:45 am
STL
-
KEF
34h 12m
2 stops
Air Canada Logo
9:15 am - 6:42 pm
KEF
-
STL
14h 27m
1 stop
$985Air Canada
Sat, Jul 4 - Thu, Jul 16
Air Canada Logo
2:40 pm - 7:55 am
STL
-
KEF
36h 15m
2 stops
Air Canada Logo
10:00 am - 12:11 pm
KEF
-
STL
31h 11m
2 stops
$986Air Canada
Sat, Jul 4 - Thu, Jul 16
United Airlines Logo
5:33 pm - 7:55 am
STL
-
KEF
33h 22m
2 stops
United Airlines Logo
10:00 am - 12:11 pm
KEF
-
STL
31h 11m
2 stops
$989United Airlines
Sat, Jul 4 - Thu, Jul 16
United Airlines Logo
7:05 pm - 7:55 am
STL
-
KEF
31h 50m
2 stops
United Airlines Logo
9:15 am - 6:42 pm
KEF
-
STL
14h 27m
1 stop
$991United Airlines
Sat, Jul 18 - Tue, Jul 28
Air Canada Logo
5:33 pm - 8:45 am
STL
-
KEF
34h 12m
2 stops
Air Canada Logo
10:00 am - 6:42 pm
KEF
-
STL
13h 42m
2 stops
$993Air Canada
Sat, Jul 4 - Thu, Jul 16
Air Canada Logo
2:40 pm - 7:55 am
STL
-
KEF
36h 15m
2 stops
Air Canada Logo
9:15 am - 6:42 pm
KEF
-
STL
14h 27m
1 stop
$995Air Canada
Sat, Jul 4 - Thu, Jul 16
Air Canada Logo
2:40 pm - 7:55 am
STL
-
KEF
36h 15m
2 stops
Air Canada Logo
9:15 am - 8:22 pm
KEF
-
STL
16h 07m
2 stops
$1,003Air Canada
Sat, Jul 4 - Thu, Jul 16
KLM Logo
10:19 am - 7:40 am
STL
-
KEF
16h 21m
1 stop
KLM Logo
8:45 am - 8:37 pm
KEF
-
STL
16h 52m
1 stop
$1,025KLM
Sat, Jul 18 - Tue, Jul 28

Air Canada flights from St. Louis to Reykjavik

Our best Air Canada deals on St. Louis to Reykjavik flight tickets
Air Canada
Jul 4
STL7:05 pmLambert-St Louis
31h 50m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 10
KEF9:15 amReykjavik Keflavik Intl
14h 27m
1 stop
STL6:42 pmLambert-St Louis
$981
Air Canada
Jul 4
STL5:33 pmLambert-St Louis
34h 12m
2 stops
KEF8:45 amReykjavik Keflavik Intl
Jul 16
KEF9:15 amReykjavik Keflavik Intl
14h 27m
1 stop
STL6:42 pmLambert-St Louis
$985
Air Canada
Jul 4
STL2:40 pmLambert-St Louis
36h 15m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 16
KEF10:00 amReykjavik Keflavik Intl
31h 11m
2 stops
STL12:11 pmLambert-St Louis
$986

United Airlines flights from St. Louis to Reykjavik

Our best United Airlines deals on St. Louis to Reykjavik flight tickets
United Airlines
Jul 18
STL7:05 pmLambert-St Louis
31h 50m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 28
KEF10:00 amReykjavik Keflavik Intl
31h 11m
2 stops
STL12:11 pmLambert-St Louis
$983
United Airlines
Jul 4
STL5:33 pmLambert-St Louis
33h 22m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 16
KEF10:00 amReykjavik Keflavik Intl
31h 11m
2 stops
STL12:11 pmLambert-St Louis
$989
United Airlines
Jul 18
STL7:05 pmLambert-St Louis
31h 50m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 28
KEF9:15 amReykjavik Keflavik Intl
14h 27m
1 stop
STL6:42 pmLambert-St Louis
$991

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Reykjavik that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 10, 2026.
Use the filters below to find and compare flights from St. Louis to Reykjavik that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/4

7:05 pm-7:55 am

2 stops31h 50m

Reykjavik Keflavik Intl

Fri 7/10

9:15 am-6:42 pm

1 stop14h 27m

$981

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/18

7:05 pm-7:55 am

2 stops31h 50m

Reykjavik Keflavik Intl

Tue 7/28

10:00 am-12:11 pm

2 stops31h 11m

$983

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/4

5:33 pm-8:45 am

2 stops34h 12m

Reykjavik Keflavik Intl

Thu 7/16

9:15 am-6:42 pm

1 stop14h 27m

$985

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/4

2:40 pm-7:55 am

2 stops36h 15m

Reykjavik Keflavik Intl

Thu 7/16

10:00 am-12:11 pm

2 stops31h 11m

$986

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/4

5:33 pm-7:55 am

2 stops33h 22m

Reykjavik Keflavik Intl

Thu 7/16

10:00 am-12:11 pm

2 stops31h 11m

$989

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/18

7:05 pm-7:55 am

2 stops31h 50m

Reykjavik Keflavik Intl

Tue 7/28

9:15 am-6:42 pm

1 stop14h 27m

$991

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/4

5:33 pm-8:45 am

2 stops34h 12m

Reykjavik Keflavik Intl

Thu 7/16

10:00 am-6:42 pm

2 stops13h 42m

$993

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/4

2:40 pm-7:55 am

2 stops36h 15m

Reykjavik Keflavik Intl

Thu 7/16

9:15 am-6:42 pm

1 stop14h 27m

$995

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/4

2:40 pm-7:55 am

2 stops36h 15m

Reykjavik Keflavik Intl

Thu 7/16

9:15 am-8:22 pm

2 stops16h 07m

$1,003
Quickest round-trip

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 7/18

10:19 am-7:40 am

1 stop16h 21m

Reykjavik Keflavik Intl

Tue 7/28

8:45 am-8:37 pm

1 stop16h 52m

$1,025

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

See travel insights to Reykjavik from

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 airline that flies from Lambert-St Louis to Reykjavik?

Alaska Airlines is the most popular carrier 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 41% 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 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

13h 05m

Direct flights

None
The fastest flight from St. Louis to Reykjavik takes 13h 05m
There are no direct flights from St. Louis to Reykjavik. There are no popular flight routes from St. Louis to Reykjavik.
Search flight deals

Frequently asked questions about flying from St. Louis to Reykjavik

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

    Reykjavik is 3212.7 mi away from Lambert-St Louis. Typically, this will take 13h 05m 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?

  • 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?

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
United AirlinesPriceFrom $595Free CancellationRating
7.4
9,698 reviews
Search United Airlines flights
Air CanadaPriceFrom $604Free CancellationRating
7.1
11,017 reviews
Search Air Canada flights
DeltaPriceFrom $636Free CancellationRating
7.9
8,452 reviews
Search Delta flights
KLMPriceFrom $756Free CancellationRating
7.8
1,513 reviews
Search KLM flights

Traveling to a place near Reykjavik?

Book flights to Reykjavik if you plan to visit one of these locations
Selfoss
Hella
Borgarnes
Hveragerdi
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

Airports listed have a maximum distance of 23.0 mi from Reykjavik
Reykjavik Keflavik Intl Airport
Reykjavik Domestic Airport