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Cheap flights from St. Louis to Iceland from $459

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 Iceland departing on 7/28. 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
0 bags

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Find the cheapest flights from St. Louis to Iceland

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
10:45 am - 7:40 am
STL
-
KEF
15h 55m
1 stop
KLM Logo
9:30 am - 4:45 pm
KEF
-
STL
12h 15m
1 stop
$826KLM
Sat, Aug 15 - Wed, Aug 26
Delta Logo
1:30 pm - 9:45 am
STL
-
KEF
15h 15m
2 stops
Delta Logo
8:45 am - 6:02 pm
KEF
-
STL
14h 17m
2 stops
$830Delta
Sat, Aug 15 - Wed, Aug 26
Multiple Airlines Logo
8:08 pm - 6:00 am
STL
-
KEF
28h 52m
1 stop
Multiple Airlines Logo
10:45 am - 7:23 pm
KEF
-
STL
13h 38m
1 stop
$835Multiple Airlines
Sat, Aug 15 - Wed, Aug 26
KLM Logo
10:45 am - 7:40 am
STL
-
KEF
15h 55m
1 stop
KLM Logo
9:30 am - 4:45 pm
KEF
-
STL
12h 15m
1 stop
$855KLM
Sun, Aug 23 - Fri, Sep 4
KLM Logo
10:45 am - 7:40 am
STL
-
KEF
15h 55m
1 stop
KLM Logo
9:30 am - 4:45 pm
KEF
-
STL
12h 15m
1 stop
$856KLM
Sun, Aug 23 - Fri, Sep 4
KLM Logo
11:51 am - 7:40 am
STL
-
KEF
14h 49m
2 stops
KLM Logo
11:25 am - 11:37 pm
KEF
-
STL
17h 12m
2 stops
$860KLM
Sun, Aug 23 - Fri, Sep 4
United Airlines Logo
5:32 pm - 8:45 am
STL
-
KEF
34h 13m
2 stops
United Airlines Logo
10:00 am - 12:49 pm
KEF
-
STL
31h 49m
2 stops
$913United Airlines
Sat, Aug 15 - Wed, Aug 26
Air Canada Logo
2:40 pm - 7:55 am
STL
-
KEF
36h 15m
2 stops
Air Canada Logo
10:00 am - 8:07 pm
KEF
-
STL
15h 07m
1 stop
$930Air Canada
Sat, Aug 15 - Wed, Aug 26
United Airlines Logo
4:52 pm - 7:00 am
STL
-
KEF
9h 08m
1 stop
United Airlines Logo
9:15 am - 4:26 pm
KEF
-
STL
36h 11m
2 stops
$934United Airlines
Tue, Sep 1 - Wed, Sep 30
United Airlines Logo
9:16 am - 8:50 am
STL
-
KEF
18h 34m
1 stop
United Airlines Logo
9:15 am - 2:18 pm
KEF
-
STL
34h 03m
2 stops
$935United Airlines
Tue, Sep 1 - Wed, Sep 30

Delta flights from St. Louis to Iceland

Our best Delta deals on St. Louis to Iceland flight tickets
Delta
Aug 15
STL1:30 pmLambert-St Louis
15h 15m
2 stops
KEF9:45 amReykjavik Keflavik Intl
Aug 26
KEF8:45 amReykjavik Keflavik Intl
14h 17m
2 stops
STL6:02 pmLambert-St Louis
$830
Delta
May 14
STL3:11 pmLambert-St Louis
11h 29m
1 stop
KEF7:40 amReykjavik Keflavik Intl
May 21
KEF9:30 amReykjavik Keflavik Intl
12h 16m
1 stop
STL4:46 pmLambert-St Louis
$995
Delta
May 14
STL1:27 pmLambert-St Louis
15h 03m
2 stops
KEF9:30 amReykjavik Keflavik Intl
May 21
KEF11:25 amReykjavik Keflavik Intl
16h 56m
2 stops
STL11:21 pmLambert-St Louis
$999

KLM flights from St. Louis to Iceland

Our best KLM deals on St. Louis to Iceland flight tickets
KLM
Aug 15
STL10:45 amLambert-St Louis
15h 55m
1 stop
KEF7:40 amReykjavik Keflavik Intl
Aug 26
KEF9:30 amReykjavik Keflavik Intl
12h 15m
1 stop
STL4:45 pmLambert-St Louis
$826
KLM
Aug 23
STL10:45 amLambert-St Louis
15h 55m
1 stop
KEF7:40 amReykjavik Keflavik Intl
Sep 4
KEF9:30 amReykjavik Keflavik Intl
12h 15m
1 stop
STL4:45 pmLambert-St Louis
$855
KLM
Aug 23
STL10:45 amLambert-St Louis
15h 55m
1 stop
KEF7:40 amReykjavik Keflavik Intl
Sep 4
KEF9:30 amReykjavik Keflavik Intl
12h 15m
1 stop
STL4:45 pmLambert-St Louis
$856

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Iceland 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 April 19, 2026.
Use the filters below to find and compare flights from St. Louis to Iceland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 8/15

10:45 am-7:40 am

1 stop15h 55m

Reykjavik Keflavik Intl

Wed 8/26

9:30 am-4:45 pm

1 stop12h 15m

$826

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 8/15

1:30 pm-9:45 am

2 stops15h 15m

Reykjavik Keflavik Intl

Wed 8/26

8:45 am-6:02 pm

2 stops14h 17m

$830

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 8/15

8:08 pm-6:00 am

1 stop28h 52m

Reykjavik Keflavik Intl

Wed 8/26

10:45 am-7:23 pm

1 stop13h 38m

$835

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 8/23

10:45 am-7:40 am

1 stop15h 55m

Reykjavik Keflavik Intl

Fri 9/4

9:30 am-4:45 pm

1 stop12h 15m

$855

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 8/23

10:45 am-7:40 am

1 stop15h 55m

Reykjavik Keflavik Intl

Fri 9/4

9:30 am-4:45 pm

1 stop12h 15m

$856

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 8/23

11:51 am-7:40 am

2 stops14h 49m

Reykjavik Keflavik Intl

Fri 9/4

11:25 am-11:37 pm

2 stops17h 12m

$860

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 8/15

5:32 pm-8:45 am

2 stops34h 13m

Reykjavik Keflavik Intl

Wed 8/26

10:00 am-12:49 pm

2 stops31h 49m

$913

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 8/15

2:40 pm-7:55 am

2 stops36h 15m

Reykjavik Keflavik Intl

Wed 8/26

10:00 am-8:07 pm

1 stop15h 07m

$930

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 9/1

4:52 pm-7:00 am

1 stop9h 08m

Reykjavik Keflavik Intl

Wed 9/30

9:15 am-4:26 pm

2 stops36h 11m

$934

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 9/1

9:16 am-8:50 am

1 stop18h 34m

Reykjavik Keflavik Intl

Wed 9/30

9:15 am-2:18 pm

2 stops34h 03m

$935

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Iceland from

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

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 airlines fly to Iceland?

United Airlines, Delta and KLM are the top three most popular airlines that fly to Iceland from St. Louis according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Iceland. Keep in mind that there are 4 different airlines that fly to Iceland on a routine basis, so you have a few additional options to choose from.

Cheap St. Louis to Iceland flight deals and tips

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

Fastest flight time

8h 30m

Direct flights

None
The fastest flight from St. Louis to Iceland takes 8h 30m
There are no direct flights from St. Louis to Iceland. There are no popular flight routes from St. Louis to Iceland.
Search flight deals

Frequently asked questions about flying from St. Louis to Iceland

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

    Prices for flights from Lambert-St Louis Airport to Iceland are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Iceland.

  • What documentation or ID do you need to fly to Iceland?

    The travel and health documents required for your trip to Iceland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Iceland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Iceland

Compare and see reviews for airlines that fly from St. Louis to Iceland with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,605 reviews
Search United Airlines flights
Air CanadaPriceFrom $604Free CancellationRating
7.1
10,940 reviews
Search Air Canada flights
DeltaPriceFrom $636Free CancellationRating
7.9
8,421 reviews
Search Delta flights
KLMPriceFrom $756Free CancellationRating
7.8
1,501 reviews
Search KLM flights

Why use momondo?

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

Finding the right flight to Iceland 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 Iceland quick and easy, saving you time and money.

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

Flights from St. Louis to Iceland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Iceland.

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

Price alerts on flights to Iceland from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Iceland trip

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