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Cheap flights from St. Louis to Iceland from $558

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 5/23. 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

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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.
Virgin Atlantic Logo
5:36 pm - 7:40 am
STL
-
KEF
9h 04m
1 stop
Virgin Atlantic Logo
8:45 am - 9:29 pm
KEF
-
STL
17h 44m
2 stops
$758Virgin Atlantic
Sun, May 10 - Tue, May 26
Delta Logo
10:19 am - 7:00 am
STL
-
KEF
15h 41m
1 stop
Delta Logo
8:45 am - 1:10 pm
KEF
-
STL
9h 25m
1 stop
$805Delta
Tue, May 12 - Wed, May 20
Delta Logo
11:25 am - 7:00 am
STL
-
KEF
14h 35m
2 stops
Delta Logo
11:25 am - 5:05 pm
KEF
-
STL
10h 40m
1 stop
$809Delta
Tue, May 12 - Wed, May 20
Virgin Atlantic Logo
5:36 pm - 7:40 am
STL
-
KEF
9h 04m
1 stop
Virgin Atlantic Logo
9:30 am - 11:21 pm
KEF
-
STL
18h 51m
1 stop
$837Virgin Atlantic
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
5:36 pm - 7:40 am
STL
-
KEF
9h 04m
1 stop
Multiple Airlines Logo
11:25 am - 9:09 pm
KEF
-
STL
14h 44m
2 stops
$838Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
1:27 pm - 7:00 am
STL
-
KEF
12h 33m
2 stops
Multiple Airlines Logo
11:25 am - 5:05 pm
KEF
-
STL
10h 40m
1 stop
$845Multiple Airlines
Thu, May 7 - Thu, May 14
Air France Logo
1:59 pm - 9:30 am
STL
-
KEF
14h 31m
2 stops
Air France Logo
9:30 am - 5:16 pm
KEF
-
STL
12h 46m
2 stops
$848Air France
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
1:59 pm - 7:00 am
STL
-
KEF
12h 01m
1 stop
Multiple Airlines Logo
11:25 am - 5:05 pm
KEF
-
STL
10h 40m
1 stop
$855Multiple Airlines
Tue, May 12 - Wed, May 20
Multiple Airlines Logo
1:27 pm - 7:00 am
STL
-
KEF
12h 33m
2 stops
Multiple Airlines Logo
11:25 am - 9:09 pm
KEF
-
STL
14h 44m
2 stops
$859Multiple Airlines
Tue, May 12 - Wed, May 20
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
$862United Airlines
Sat, Aug 15 - Wed, Aug 26

Air Canada flights from St. Louis to Iceland

Our best Air Canada deals on St. Louis to Iceland flight tickets
Air Canada
Sep 1
STL8:55 amLambert-St Louis
18h 50m
1 stop
KEF8:45 amReykjavik Keflavik Intl
Sep 15
KEF10:00 amReykjavik Keflavik Intl
31h 13m
2 stops
STL12:13 pmLambert-St Louis
$942
Air Canada
Sep 1
STL2:40 pmLambert-St Louis
36h 15m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Sep 15
KEF10:00 amReykjavik Keflavik Intl
34h 38m
2 stops
STL3:38 pmLambert-St Louis
$946
Air Canada
Sep 4
STL8:55 amLambert-St Louis
18h 00m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Sep 11
KEF9:15 amReykjavik Keflavik Intl
15h 45m
2 stops
STL8:00 pmLambert-St Louis
$962

Air France flights from St. Louis to Iceland

Our best Air France deals on St. Louis to Iceland flight tickets
Air France
May 7
STL1:59 pmLambert-St Louis
14h 31m
2 stops
KEF9:30 amReykjavik Keflavik Intl
May 14
KEF9:30 amReykjavik Keflavik Intl
12h 46m
2 stops
STL5:16 pmLambert-St Louis
$848
Air France
May 10
STL1:59 pmLambert-St Louis
14h 31m
2 stops
KEF9:30 amReykjavik Keflavik Intl
May 17
KEF11:25 amReykjavik Keflavik Intl
15h 04m
2 stops
STL9:29 pmLambert-St Louis
$903

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 March 28, 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

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 5/10

5:36 pm-7:40 am

1 stop9h 04m

Reykjavik Keflavik Intl

Tue 5/26

8:45 am-9:29 pm

2 stops17h 44m

$758

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 5/12

10:19 am-7:00 am

1 stop15h 41m

Reykjavik Keflavik Intl

Wed 5/20

8:45 am-1:10 pm

1 stop9h 25m

$805

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 5/12

11:25 am-7:00 am

2 stops14h 35m

Reykjavik Keflavik Intl

Wed 5/20

11:25 am-5:05 pm

1 stop10h 40m

$809

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 5/7

5:36 pm-7:40 am

1 stop9h 04m

Reykjavik Keflavik Intl

Thu 5/14

9:30 am-11:21 pm

1 stop18h 51m

$837

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 5/12

5:36 pm-7:40 am

1 stop9h 04m

Reykjavik Keflavik Intl

Tue 5/19

11:25 am-9:09 pm

2 stops14h 44m

$838

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 5/7

1:27 pm-7:00 am

2 stops12h 33m

Reykjavik Keflavik Intl

Thu 5/14

11:25 am-5:05 pm

1 stop10h 40m

$845

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 5/7

1:59 pm-9:30 am

2 stops14h 31m

Reykjavik Keflavik Intl

Thu 5/14

9:30 am-5:16 pm

2 stops12h 46m

$848
Quickest round-trip

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 5/12

1:59 pm-7:00 am

1 stop12h 01m

Reykjavik Keflavik Intl

Wed 5/20

11:25 am-5:05 pm

1 stop10h 40m

$855

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 5/12

1:27 pm-7:00 am

2 stops12h 33m

Reykjavik Keflavik Intl

Wed 5/20

11:25 am-9:09 pm

2 stops14h 44m

$859

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

$862

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

9h 08m

Direct flights

None
The fastest flight from St. Louis to Iceland takes 9h 08m
There are no direct flights from St. Louis to Iceland. There are no popular flight routes from St. Louis to Iceland.
Search flight deals

  • 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
9,509 reviews
Search United Airlines flights
Air CanadaPriceFrom $604Free CancellationRating
7.1
10,856 reviews
Search Air Canada flights
DeltaPriceFrom $636Free CancellationRating
7.9
8,359 reviews
Search Delta flights
KLMPriceFrom $756Free CancellationRating
7.8
1,479 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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