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Cheap flights from St. Louis to Reykjavik from $395

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 8/16. 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
7:00 am - 7:00 am
STL
-
KEF
19h 00m
1 stop
United Airlines Logo
9:15 am - 3:43 pm
KEF
-
STL
35h 28m
2 stops
$784United Airlines
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
6:53 pm - 7:55 am
STL
-
KEF
32h 02m
2 stops
Air Canada Logo
9:15 am - 9:21 pm
KEF
-
STL
41h 06m
2 stops
$787Air Canada
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
2:40 pm - 7:55 am
STL
-
KEF
36h 15m
2 stops
Air Canada Logo
9:15 am - 10:59 pm
KEF
-
STL
42h 44m
2 stops
$791Air Canada
Mon, Sep 21 - Wed, Sep 30
Delta Logo
3:52 pm - 7:00 am
STL
-
KEF
10h 08m
1 stop
Delta Logo
9:30 am - 3:12 pm
KEF
-
STL
10h 42m
1 stop
$804Delta
Mon, Sep 21 - Wed, Sep 30
United Airlines Logo
11:00 am - 10:00 am
STL
-
KEF
41h 00m
2 stops
United Airlines Logo
12:00 pm - 10:20 pm
KEF
-
STL
16h 20m
2 stops
$828United Airlines
Thu, Nov 5 - Thu, Nov 12
Air Canada Logo
12:10 pm - 7:55 am
STL
-
KEF
14h 45m
1 stop
Air Canada Logo
10:00 am - 12:13 pm
KEF
-
STL
31h 13m
2 stops
$834Air Canada
Thu, Oct 8 - Thu, Oct 15
United Airlines Logo
6:00 am - 7:55 am
STL
-
KEF
20h 55m
2 stops
United Airlines Logo
10:00 am - 2:17 pm
KEF
-
STL
33h 17m
2 stops
$839United Airlines
Thu, Oct 1 - Tue, Oct 13
Multiple Airlines Logo
1:45 pm - 6:35 am
STL
-
KEF
11h 50m
1 stop
Multiple Airlines Logo
7:50 pm - 9:20 am
KEF
-
STL
18h 30m
1 stop
$843Multiple Airlines
Sat, Oct 10 - Sat, Oct 17
United Airlines Logo
12:10 pm - 7:55 am
STL
-
KEF
14h 45m
1 stop
United Airlines Logo
10:00 am - 8:00 pm
KEF
-
STL
15h 00m
1 stop
$848United Airlines
Thu, Oct 1 - Tue, Oct 13
Multiple Airlines Logo
2:40 pm - 6:35 am
STL
-
KEF
10h 55m
1 stop
Multiple Airlines Logo
5:00 pm - 7:45 am
KEF
-
STL
19h 45m
1 stop
$856Multiple Airlines
Sat, Aug 15 - Wed, Aug 26

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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
$787
Air Canada
Sep 21
STL2:40 pmLambert-St Louis
36h 15m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Sep 30
KEF9:15 amReykjavik Keflavik Intl
42h 44m
2 stops
STL10:59 pmLambert-St Louis
$791
Air Canada
Oct 8
STL12:10 pmLambert-St Louis
14h 45m
1 stop
KEF7:55 amReykjavik Keflavik Intl
Oct 15
KEF10:00 amReykjavik Keflavik Intl
31h 13m
2 stops
STL12:13 pmLambert-St Louis
$834

United Airlines flights from St. Louis to Reykjavik

Our best United Airlines deals on St. Louis to Reykjavik flight tickets
United Airlines
Sep 21
STL7:00 amLambert-St Louis
19h 00m
1 stop
KEF7:00 amReykjavik Keflavik Intl
Sep 30
KEF9:15 amReykjavik Keflavik Intl
35h 28m
2 stops
STL3:43 pmLambert-St Louis
$784
United Airlines
Nov 5
STL11:00 amLambert-St Louis
41h 00m
2 stops
KEF10:00 amReykjavik Keflavik Intl
Nov 12
KEF12:00 pmReykjavik Keflavik Intl
16h 20m
2 stops
STL10:20 pmLambert-St Louis
$828
United Airlines
Oct 1
STL6:00 amLambert-St Louis
20h 55m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Oct 13
KEF10:00 amReykjavik Keflavik Intl
33h 17m
2 stops
STL2:17 pmLambert-St Louis
$839

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 July 8, 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

Mon 9/21

7:00 am-7:00 am

1 stop19h 00m

Reykjavik Keflavik Intl

Wed 9/30

9:15 am-3:43 pm

2 stops35h 28m

$784

St. LouisReykjavik

STL - KEF

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

$787

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 9/21

2:40 pm-7:55 am

2 stops36h 15m

Reykjavik Keflavik Intl

Wed 9/30

9:15 am-10:59 pm

2 stops42h 44m

$791
Quickest round-trip

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 9/21

3:52 pm-7:00 am

1 stop10h 08m

Reykjavik Keflavik Intl

Wed 9/30

9:30 am-3:12 pm

1 stop10h 42m

$804

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 11/5

11:00 am-10:00 am

2 stops41h 00m

Reykjavik Keflavik Intl

Thu 11/12

12:00 pm-10:20 pm

2 stops16h 20m

$828

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 10/8

12:10 pm-7:55 am

1 stop14h 45m

Reykjavik Keflavik Intl

Thu 10/15

10:00 am-12:13 pm

2 stops31h 13m

$834

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 10/1

6:00 am-7:55 am

2 stops20h 55m

Reykjavik Keflavik Intl

Tue 10/13

10:00 am-2:17 pm

2 stops33h 17m

$839

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 10/10

1:45 pm-6:35 am

1 stop11h 50m

Reykjavik Keflavik Intl

Sat 10/17

7:50 pm-9:20 am

1 stop18h 30m

$843

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 10/1

12:10 pm-7:55 am

1 stop14h 45m

Reykjavik Keflavik Intl

Tue 10/13

10:00 am-8:00 pm

1 stop15h 00m

$848

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 8/15

2:40 pm-6:35 am

1 stop10h 55m

Reykjavik Keflavik Intl

Wed 8/26

5:00 pm-7:45 am

1 stop19h 45m

$856

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

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

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

You could potentially save up to 57% 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

9h 10m

Direct flights

None
The fastest flight from St. Louis to Reykjavik takes 9h 10m
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 9h 10m 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
11,321 reviews
Search Air Canada flights
KLMPriceFrom $756Free CancellationRating
7.8
1,534 reviews
Search KLM flights
United AirlinesPriceFrom $783Free CancellationRating
7.4
9,948 reviews
Search United Airlines flights
DeltaPriceFrom $784Free CancellationRating
7.8
8,451 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