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Cheap flights from St. Louis to Reykjavik from $462

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 10/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Reykjavik

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:40 am - 10:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
18h 20m1 stop Chicago O'Hare Intl
United Airlines Logo
12:00 pm - 6:09 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
12h 09m1 stop Chicago O'Hare Intl
$731United Airlines
Sun, Nov 8 - Thu, Nov 19
United Airlines Logo
5:00 pm - 10:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
35h 00m2 stops Newark Chicago O'Hare Intl
United Airlines Logo
12:00 pm - 7:23 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
13h 23m1 stop Chicago O'Hare Intl
$736United Airlines
Tue, Nov 10 - Thu, Nov 19
United Airlines Logo
5:00 pm - 10:00 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
35h 00m2 stops Newark Chicago O'Hare Intl
United Airlines Logo
12:00 pm - 9:03 amKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
27h 03m2 stops Chicago O'Hare Intl Newark
$736United Airlines
Tue, Nov 10 - Thu, Nov 19
Air Canada Logo
12:10 pm - 7:55 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
14h 45m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
10:00 am - 3:43 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
34h 43m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$788Air Canada
Tue, Sep 22 - Tue, Sep 29
Air Canada Logo
6:53 pm - 7:55 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
32h 02m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:15 am - 9:21 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
41h 06m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$788Air Canada
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
12:10 pm - 8:45 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
15h 35m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
9:15 am - 3:43 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
35h 28m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$792Air Canada
Mon, Sep 21 - Wed, Sep 30
Multiple Airlines Logo
12:10 pm - 7:55 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
14h 45m1 stop Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
10:00 am - 8:20 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
15h 20m1 stop Toronto Pearson Intl
$802Multiple Airlines
Tue, Sep 22 - Tue, Sep 29
Multiple Airlines Logo
6:45 pm - 9:25 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
33h 40m2 stops Las Vegas Harry Reid Intl Denver Intl
Multiple Airlines Logo
10:45 am - 7:13 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
13h 28m1 stop Denver Intl
$835Multiple Airlines
Sat, Aug 22 - Mon, Aug 31
Multiple Airlines Logo
12:10 pm - 8:45 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
15h 35m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Multiple Airlines Logo
12:40 am - 2:45 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
19h 05m1 stop Frankfurt am Main
$850Multiple Airlines
Wed, Oct 21 - Sat, Oct 24
KLM Logo
1:40 pm - 9:30 amSTL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
14h 50m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
KLM Logo
11:25 am - 7:58 pmKEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
13h 33m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
$5,305KLM
Sat, Sep 26 - Sun, Oct 4

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Air Canada flights from St. Louis to Reykjavik

Our best Air Canada deals on St. Louis to Reykjavik flight tickets
Air Canada
Sep 21
STL6:53 pmLambert-St Louis
32h 02m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Sep 30
KEF9:15 amReykjavik Keflavik Intl
41h 06m
2 stops
STL9:21 pmLambert-St Louis
$788
Air Canada
Sep 21
STL12:10 pmLambert-St Louis
15h 35m
2 stops
KEF8:45 amReykjavik Keflavik Intl
Sep 30
KEF9:15 amReykjavik Keflavik Intl
35h 28m
2 stops
STL3:43 pmLambert-St Louis
$792
Air Canada
Sep 21
STL9:40 amLambert-St Louis
18h 05m
2 stops
KEF8:45 amReykjavik Keflavik Intl
Sep 30
KEF9:15 amReykjavik Keflavik Intl
31h 58m
2 stops
STL12:13 pmLambert-St Louis
$793

Scandinavian Airlines flights from St. Louis to Reykjavik

Our best Scandinavian Airlines deals on St. Louis to Reykjavik flight tickets
Scandinavian Airlines
Aug 15
STL3:44 pmLambert-St Louis
35h 36m
2 stops
KEF8:20 amReykjavik Keflavik Intl
Aug 26
KEF5:35 pmReykjavik Keflavik Intl
35h 23m
2 stops
STL11:58 pmLambert-St Louis
$875
Scandinavian Airlines
Aug 27
STL3:39 pmLambert-St Louis
27h 56m
2 stops
KEF12:35 amReykjavik Keflavik Intl
Aug 30
KEF6:00 pmReykjavik Keflavik Intl
34h 58m
2 stops
STL11:58 pmLambert-St Louis
$985
Scandinavian Airlines
Aug 15
STL3:44 pmLambert-St Louis
35h 36m
2 stops
KEF8:20 amReykjavik Keflavik Intl
Aug 26
KEF5:35 pmReykjavik Keflavik Intl
35h 23m
2 stops
STL11:58 pmLambert-St Louis
$1,172

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 August 6, 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 Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Sun 11/8

9:40 am-10:00 am

1 stop18h 20m

Reykjavik Keflavik Intl

Thu 11/19

12:00 pm-6:09 pm

1 stop12h 09m

$731

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Tue 11/10

5:00 pm-10:00 am

2 stops35h 00m

Reykjavik Keflavik Intl

Thu 11/19

12:00 pm-7:23 pm

1 stop13h 23m

$736

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Tue 11/10

5:00 pm-10:00 am

2 stops35h 00m

Reykjavik Keflavik Intl

Thu 11/19

12:00 pm-9:03 am

2 stops27h 03m

$736

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Tue 9/22

12:10 pm-7:55 am

1 stop14h 45m

Reykjavik Keflavik Intl

Tue 9/29

10:00 am-3:43 pm

2 stops34h 43m

$788

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Mon 9/21

6:53 pm-7:55 am

2 stops32h 02m

Reykjavik Keflavik Intl

Wed 9/30

9:15 am-9:21 pm

2 stops41h 06m

$788

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Mon 9/21

12:10 pm-8:45 am

2 stops15h 35m

Reykjavik Keflavik Intl

Wed 9/30

9:15 am-3:43 pm

2 stops35h 28m

$792

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Tue 9/22

12:10 pm-7:55 am

1 stop14h 45m

Reykjavik Keflavik Intl

Tue 9/29

10:00 am-8:20 pm

1 stop15h 20m

$802

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Sat 8/22

6:45 pm-9:25 am

2 stops33h 40m

Reykjavik Keflavik Intl

Mon 8/31

10:45 am-7:13 pm

1 stop13h 28m

$835

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Wed 10/21

12:10 pm-8:45 am

2 stops15h 35m

Reykjavik Keflavik Intl

Sat 10/24

12:40 am-2:45 pm

1 stop19h 05m

$850
Quickest round-trip

St. LouisReykjavik

STL Lambert-St Louis - KEF Reykjavik Keflavik Intl

STLKEF

Lambert-St Louis

Sat 9/26

1:40 pm-9:30 am

2 stops14h 50m

Reykjavik Keflavik Intl

Sun 10/4

11:25 am-7:58 pm

2 stops13h 33m

$5,305

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from St. Louis to Reykjavik

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Can stopping save me money on St. Louis to Reykjavik flights?

You could potentially save up to 18% on your flight if you consider stops on a St. Louis to Reykjavik flight.

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 30m

Direct flights

None
The fastest flight from St. Louis to Reykjavik takes 10h 30m
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 10h 30m 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
Air CanadaPriceFrom $604Free CancellationRating
7.1
11,428 reviews
Search Air Canada flights
KLMPriceFrom $756Free CancellationRating
7.8
1,553 reviews
Search KLM flights
United AirlinesPriceFrom $783Free CancellationRating
7.4
10,058 reviews
Search United Airlines flights
DeltaPriceFrom $784Free CancellationRating
7.8
8,491 reviews
Search Delta flights

Traveling to a place near Reykjavik?

Book flights to Reykjavik if you plan to visit one of these locations
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

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