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Cheap flights from St. Louis to Iceland from $772

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 1/13. 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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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.
Multiple Airlines Logo
4:05 pm - 3:30 pmSTL-KEF
17h 25m2 stops
Multiple Airlines Logo
4:20 pm - 1:55 pmKEF-STL
27h 35m2 stops
$772Multiple Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
4:05 pm - 3:30 pmSTL-KEF
17h 25m2 stops
Multiple Airlines Logo
11:30 am - 1:55 pmKEF-STL
32h 25m3 stops
$868Multiple Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
5:11 pm - 3:20 pmSTL-KEF
40h 09m2 stops
Multiple Airlines Logo
5:15 pm - 10:23 amKEF-STL
23h 08m1 stop
$907Multiple Airlines
Find Deal
Sun, Jan 11 - Thu, Jan 22
Multiple Airlines Logo
9:55 am - 6:35 amSTL-KEF
14h 40m1 stop
Multiple Airlines Logo
4:45 pm - 7:15 amKEF-STL
20h 30m1 stop
$921Multiple Airlines
Find Deal
Fri, Feb 13 - Sat, Feb 21
Multiple Airlines Logo
9:35 am - 6:15 amSTL-KEF
14h 40m1 stop
Multiple Airlines Logo
5:15 pm - 10:23 amKEF-STL
23h 08m1 stop
$930Multiple Airlines
Find Deal
Sun, Jan 11 - Thu, Jan 22
Multiple Airlines Logo
5:11 pm - 6:05 amSTL-KEF
30h 54m2 stops
Multiple Airlines Logo
4:55 pm - 2:46 pmKEF-STL
27h 51m1 stop
$962Multiple Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 20
Lufthansa Logo
12:44 pm - 2:20 pmSTL-KEF
43h 36m2 stops
Lufthansa Logo
3:10 pm - 4:03 pmKEF-STL
54h 53m2 stops
$977Lufthansa
Find Deal
Sun, Jan 11 - Thu, Jan 22
Multiple Airlines Logo
4:05 pm - 11:55 pmSTL-KEF
25h 50m3 stops
Multiple Airlines Logo
11:30 am - 1:55 pmKEF-STL
32h 25m3 stops
$1,023Multiple Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
2:50 pm - 6:15 amSTL-KEF
33h 25m1 stop
Multiple Airlines Logo
4:55 pm - 2:46 pmKEF-STL
27h 51m1 stop
$1,153Multiple Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 20
Lufthansa Logo
6:45 pm - 2:20 pmSTL-KEF
37h 35m2 stops
Lufthansa Logo
3:10 pm - 12:05 amKEF-STL
38h 55m2 stops
$1,218Lufthansa
Find Deal
Fri, Feb 13 - Sat, Feb 21

Lufthansa flights from St. Louis to Iceland

Our best Lufthansa deals on St. Louis to Iceland flight tickets
Lufthansa
Jan 11
STL12:44 pmLambert-St Louis
43h 36m
2 stops
KEF2:20 pmReykjavik Keflavik Intl
Jan 22
KEF3:10 pmReykjavik Keflavik Intl
54h 53m
2 stops
STL4:03 pmLambert-St Louis
$977
Find similar
Lufthansa
Feb 13
STL6:45 pmLambert-St Louis
37h 35m
2 stops
KEF2:20 pmReykjavik Keflavik Intl
Feb 21
KEF3:10 pmReykjavik Keflavik Intl
38h 55m
2 stops
STL12:05 amLambert-St Louis
$1,218
Find similar
Lufthansa
Jan 23
STL6:40 pmLambert-St Louis
37h 40m
2 stops
KEF2:20 pmReykjavik Keflavik Intl
Jan 27
KEF3:20 pmReykjavik Keflavik Intl
28h 35m
1 stop
STL1:55 pmLambert-St Louis
$1,429
Find similar

Scandinavian Airlines flights from St. Louis to Iceland

Our best Scandinavian Airlines deals on St. Louis to Iceland flight tickets
Scandinavian Airlines
Feb 13
STL3:47 pmLambert-St Louis
36h 58m
2 stops
KEF10:45 amReykjavik Keflavik Intl
Feb 21
KEF7:50 amReykjavik Keflavik Intl
21h 46m
2 stops
STL11:36 pmLambert-St Louis
$1,353
Find similar
Scandinavian Airlines
Feb 13
STL3:47 pmLambert-St Louis
36h 58m
2 stops
KEF10:45 amReykjavik Keflavik Intl
Feb 21
KEF7:50 amReykjavik Keflavik Intl
21h 46m
2 stops
STL11:36 pmLambert-St Louis
$1,355
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 November 29, 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

Tue 1/13

4:05 pm-3:30 pm

2 stops17h 25m

Reykjavik Keflavik Intl

Tue 1/20

4:20 pm-1:55 pm

2 stops27h 35m

$772

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 1/13

4:05 pm-3:30 pm

2 stops17h 25m

Reykjavik Keflavik Intl

Tue 1/20

11:30 am-1:55 pm

3 stops32h 25m

$868

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 1/11

5:11 pm-3:20 pm

2 stops40h 09m

Reykjavik Keflavik Intl

Thu 1/22

5:15 pm-10:23 am

1 stop23h 08m

$907

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 2/13

9:55 am-6:35 am

1 stop14h 40m

Reykjavik Keflavik Intl

Sat 2/21

4:45 pm-7:15 am

1 stop20h 30m

$921

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 1/11

9:35 am-6:15 am

1 stop14h 40m

Reykjavik Keflavik Intl

Thu 1/22

5:15 pm-10:23 am

1 stop23h 08m

$930

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 1/13

5:11 pm-6:05 am

2 stops30h 54m

Reykjavik Keflavik Intl

Tue 1/20

4:55 pm-2:46 pm

1 stop27h 51m

$962

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 1/11

12:44 pm-2:20 pm

2 stops43h 36m

Reykjavik Keflavik Intl

Thu 1/22

3:10 pm-4:03 pm

2 stops54h 53m

$977

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 1/13

4:05 pm-11:55 pm

3 stops25h 50m

Reykjavik Keflavik Intl

Tue 1/20

11:30 am-1:55 pm

3 stops32h 25m

$1,023

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 1/13

2:50 pm-6:15 am

1 stop33h 25m

Reykjavik Keflavik Intl

Tue 1/20

4:55 pm-2:46 pm

1 stop27h 51m

$1,153

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 2/13

6:45 pm-2:20 pm

2 stops37h 35m

Reykjavik Keflavik Intl

Sat 2/21

3:10 pm-12:05 am

2 stops38h 55m

$1,218

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

Fastest flight time

11h 27m

Direct flights

None
The fastest flight from St. Louis to Iceland takes 11h 27m
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
10,485 reviews
Search Air Canada flights
United AirlinesPriceFrom $595Free CancellationRating
7.4
9,057 reviews
Search United Airlines flights
DeltaPriceFrom $636Free CancellationRating
7.9
8,011 reviews
Search Delta flights
KLMPriceFrom $828Free CancellationRating
7.7
1,424 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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