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Cheap flights from St. Louis to Iceland from $610

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Iceland departing on 11/12. 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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Find the cheapest flights from St. Louis to Iceland

Cheap round-trip flights

Lufthansa Logo
3:50 pm - 2:15 pmSTL-KEF
16h 25m2 stops
Lufthansa Logo
3:20 pm - 1:55 pmKEF-STL
28h 35m1 stop
$610Lufthansa
Find Deal
Wed, Nov 12 - Tue, Nov 18
Lufthansa Logo
3:50 pm - 2:15 pmSTL-KEF
16h 25m2 stops
Lufthansa Logo
3:20 pm - 11:44 pmKEF-STL
38h 24m2 stops
$620Lufthansa
Find Deal
Wed, Nov 12 - Tue, Nov 18
Multiple Airlines Logo
7:45 pm - 6:05 amSTL-KEF
28h 20m1 stop
Multiple Airlines Logo
4:55 pm - 9:07 amKEF-STL
22h 12m1 stop
$664Multiple Airlines
Find Deal
Wed, Nov 12 - Tue, Nov 18
Multiple Airlines Logo
7:45 pm - 6:05 amSTL-KEF
28h 20m1 stop
Multiple Airlines Logo
4:55 pm - 9:07 amKEF-STL
22h 12m1 stop
$682Multiple Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
KLM Logo
4:10 pm - 9:30 amSTL-KEF
12h 20m1 stop
KLM Logo
8:45 am - 5:29 pmKEF-STL
13h 44m1 stop
$798KLM
Find Deal
Wed, Oct 1 - Wed, Oct 8
Delta Logo
6:40 am - 9:30 amSTL-KEF
21h 50m2 stops
Delta Logo
8:45 am - 1:22 pmKEF-STL
9h 37m1 stop
$888Delta
Find Deal
Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
4:05 pm - 8:15 amSTL-KEF
11h 10m1 stop
United Airlines Logo
9:50 am - 10:49 amKEF-STL
29h 59m2 stops
$894United Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 7
United Airlines Logo
9:20 am - 8:15 amSTL-KEF
17h 55m2 stops
United Airlines Logo
9:50 am - 2:27 pmKEF-STL
33h 37m2 stops
$898United Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 7
KLM Logo
4:10 pm - 9:30 amSTL-KEF
12h 20m1 stop
KLM Logo
8:45 am - 5:29 pmKEF-STL
13h 44m1 stop
$948KLM
Find Deal
Wed, Oct 1 - Wed, Oct 8
Delta Logo
10:40 am - 9:30 amSTL-KEF
17h 50m2 stops
Delta Logo
8:45 am - 1:22 pmKEF-STL
9h 37m1 stop
$1,038Delta
Find Deal
Wed, Oct 1 - Wed, Oct 8

Lufthansa flights from St. Louis to Iceland

Our best Lufthansa deals on St. Louis to Iceland flight tickets
Lufthansa
Nov 12
STL3:50 pmLambert-St Louis
16h 25m
2 stops
KEF2:15 pmReykjavik Keflavik Intl
Nov 18
KEF3:20 pmReykjavik Keflavik Intl
28h 35m
1 stop
STL1:55 pmLambert-St Louis
$610
Find similar
Lufthansa
Nov 12
STL3:50 pmLambert-St Louis
16h 25m
2 stops
KEF2:15 pmReykjavik Keflavik Intl
Nov 18
KEF3:20 pmReykjavik Keflavik Intl
38h 24m
2 stops
STL11:44 pmLambert-St Louis
$620
Find similar
Lufthansa
Nov 12
STL3:50 pmLambert-St Louis
16h 25m
2 stops
KEF2:15 pmReykjavik Keflavik Intl
Nov 18
KEF3:20 pmReykjavik Keflavik Intl
28h 35m
1 stop
STL1:55 pmLambert-St Louis
$633
Find similar

Scandinavian Airlines flights from St. Louis to Iceland

Our best Scandinavian Airlines deals on St. Louis to Iceland flight tickets
Scandinavian Airlines
Nov 13
STL1:55 pmLambert-St Louis
28h 00m
2 stops
KEF11:55 pmReykjavik Keflavik Intl
Nov 19
KEF11:30 amReykjavik Keflavik Intl
39h 34m
2 stops
STL9:04 pmLambert-St Louis
$738
Find similar
Scandinavian Airlines
Nov 3
STL3:59 pmLambert-St Louis
17h 26m
2 stops
KEF3:25 pmReykjavik Keflavik Intl
Nov 7
KEF11:30 amReykjavik Keflavik Intl
40h 34m
2 stops
STL10:04 pmLambert-St Louis
$858
Find similar
Scandinavian Airlines
Nov 20
STL11:44 amLambert-St Louis
21h 41m
2 stops
KEF3:25 pmReykjavik Keflavik Intl
Nov 24
KEF7:50 amReykjavik Keflavik Intl
20h 08m
2 stops
STL9:58 pmLambert-St Louis
$1,063
Find similar

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 September 17, 2025.
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

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 11/12

3:50 pm-2:15 pm

2 stops16h 25m

Reykjavik Keflavik Intl

Tue 11/18

3:20 pm-1:55 pm

1 stop28h 35m

$610

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 11/12

3:50 pm-2:15 pm

2 stops16h 25m

Reykjavik Keflavik Intl

Tue 11/18

3:20 pm-11:44 pm

2 stops38h 24m

$620

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 11/12

7:45 pm-6:05 am

1 stop28h 20m

Reykjavik Keflavik Intl

Tue 11/18

4:55 pm-9:07 am

1 stop22h 12m

$664

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 11/11

7:45 pm-6:05 am

1 stop28h 20m

Reykjavik Keflavik Intl

Tue 11/18

4:55 pm-9:07 am

1 stop22h 12m

$682

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/1

4:10 pm-9:30 am

1 stop12h 20m

Reykjavik Keflavik Intl

Wed 10/8

8:45 am-5:29 pm

1 stop13h 44m

$798

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/1

6:40 am-9:30 am

2 stops21h 50m

Reykjavik Keflavik Intl

Wed 10/8

8:45 am-1:22 pm

1 stop9h 37m

$888

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 10/3

4:05 pm-8:15 am

1 stop11h 10m

Reykjavik Keflavik Intl

Tue 10/7

9:50 am-10:49 am

2 stops29h 59m

$894

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 10/3

9:20 am-8:15 am

2 stops17h 55m

Reykjavik Keflavik Intl

Tue 10/7

9:50 am-2:27 pm

2 stops33h 37m

$898

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/1

4:10 pm-9:30 am

1 stop12h 20m

Reykjavik Keflavik Intl

Wed 10/8

8:45 am-5:29 pm

1 stop13h 44m

$948

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/1

10:40 am-9:30 am

2 stops17h 50m

Reykjavik Keflavik Intl

Wed 10/8

8:45 am-1:22 pm

1 stop9h 37m

$1,038

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 is the cheapest day to depart on your flight to Iceland?

The cheapest day to depart from St. Louis to Iceland is on a Tuesday when prices can be found for as low as $807. Flights from St. Louis to Iceland on a Thursday will generally be more expensive and average around $1,216. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Iceland?

According to our data, the cheapest time of day to fly to Iceland is in the morning. momondo users have found flights departing from St. Louis to Iceland in the morning for as low as $846. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the afternoon because they tend to be around $1,040. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Direct flights

None
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
Air CanadaPriceFrom $566Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $595Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $636Free CancellationRating
7.9
7,961 reviews
Search Delta flights
KLMPriceFrom $828Free CancellationRating
7.8
1,386 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.

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