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Cheap flights from St. Louis to Iceland from $715

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 12/8. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:54 am - 6:15 amSTL-KEF
14h 21m1 stop
Multiple Airlines Logo
5:15 pm - 10:33 pmKEF-STL
35h 18m1 stop
$715Multiple Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Multiple Airlines Logo
9:54 am - 6:15 amSTL-KEF
14h 21m1 stop
Multiple Airlines Logo
5:15 pm - 10:33 pmKEF-STL
35h 18m1 stop
$716Multiple Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Multiple Airlines Logo
11:46 am - 5:15 pmSTL-KEF
23h 29m2 stops
Multiple Airlines Logo
6:00 pm - 7:26 pmKEF-STL
31h 26m2 stops
$753Multiple Airlines
Find Deal
Fri, Feb 13 - Sat, Feb 21
Scandinavian Airlines Logo
11:40 am - 3:25 pmSTL-KEF
21h 45m2 stops
Scandinavian Airlines Logo
11:30 am - 8:24 amKEF-STL
26h 54m2 stops
$838Scandinavian Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
British Airways Logo
6:53 pm - 10:55 amSTL-KEF
34h 02m2 stops
British Airways Logo
11:45 am - 7:05 pmKEF-STL
37h 20m2 stops
$908British Airways
Find Deal
Thu, Dec 4 - Thu, Dec 11
Scandinavian Airlines Logo
11:55 am - 11:20 pmSTL-KEF
29h 25m2 stops
Scandinavian Airlines Logo
11:30 am - 11:38 pmKEF-STL
42h 08m2 stops
$1,036Scandinavian Airlines
Find Deal
Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
7:00 am - 6:15 amSTL-KEF
17h 15m2 stops
Alaska Airlines Logo
4:50 pm - 2:27 pmKEF-STL
27h 37m2 stops
$1,210Alaska Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Alaska Airlines Logo
7:00 am - 6:15 amSTL-KEF
17h 15m2 stops
Alaska Airlines Logo
4:50 pm - 2:27 pmKEF-STL
27h 37m2 stops
$1,220Alaska Airlines
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Mon, Dec 8 - Mon, Dec 15
Lufthansa Logo
1:00 pm - 2:20 pmSTL-KEF
43h 20m2 stops
Lufthansa Logo
3:25 pm - 9:40 pmKEF-STL
36h 15m2 stops
$1,269Lufthansa
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Fri, Dec 5 - Fri, Dec 12
Lufthansa Logo
6:45 pm - 2:20 pmSTL-KEF
37h 35m2 stops
Lufthansa Logo
3:10 pm - 10:00 pmKEF-STL
36h 50m2 stops
$1,349Lufthansa
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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
Nov 12
STL6:43 pmLambert-St Louis
37h 37m
2 stops
KEF2:20 pmReykjavik Keflavik Intl
Nov 18
KEF3:20 pmReykjavik Keflavik Intl
28h 35m
1 stop
STL1:55 pmLambert-St Louis
$975
Find similar
Lufthansa
Nov 12
STL6:43 pmLambert-St Louis
37h 37m
2 stops
KEF2:20 pmReykjavik Keflavik Intl
Nov 18
KEF3:20 pmReykjavik Keflavik Intl
38h 24m
2 stops
STL11:44 pmLambert-St Louis
$980
Find similar
Lufthansa
Dec 5
STL1:00 pmLambert-St Louis
43h 20m
2 stops
KEF2:20 pmReykjavik Keflavik Intl
Dec 12
KEF3:25 pmReykjavik Keflavik Intl
36h 15m
2 stops
STL9:40 pmLambert-St Louis
$1,269
Find similar

British Airways flights from St. Louis to Iceland

Our best British Airways deals on St. Louis to Iceland flight tickets
British Airways
Dec 4
STL6:53 pmLambert-St Louis
34h 02m
2 stops
KEF10:55 amReykjavik Keflavik Intl
Dec 11
KEF11:45 amReykjavik Keflavik Intl
37h 20m
2 stops
STL7:05 pmLambert-St Louis
$908
Find similar
British Airways
Nov 10
STL2:53 pmLambert-St Louis
37h 57m
2 stops
KEF10:50 amReykjavik Keflavik Intl
Nov 14
KEF6:10 pmReykjavik Keflavik Intl
35h 46m
2 stops
STL11:56 pmLambert-St Louis
$1,417
Find similar
British Airways
Nov 12
STL5:40 pmLambert-St Louis
41h 35m
2 stops
KEF5:15 pmReykjavik Keflavik Intl
Nov 19
KEF11:50 amReykjavik Keflavik Intl
42h 06m
2 stops
STL11:56 pmLambert-St Louis
$1,591
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 6, 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

Mon 12/8

9:54 am-6:15 am

1 stop14h 21m

Reykjavik Keflavik Intl

Mon 12/15

5:15 pm-10:33 pm

1 stop35h 18m

$715

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 12/8

9:54 am-6:15 am

1 stop14h 21m

Reykjavik Keflavik Intl

Mon 12/15

5:15 pm-10:33 pm

1 stop35h 18m

$716

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 2/13

11:46 am-5:15 pm

2 stops23h 29m

Reykjavik Keflavik Intl

Sat 2/21

6:00 pm-7:26 pm

2 stops31h 26m

$753

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 12/8

11:40 am-3:25 pm

2 stops21h 45m

Reykjavik Keflavik Intl

Mon 12/15

11:30 am-8:24 am

2 stops26h 54m

$838

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 12/4

6:53 pm-10:55 am

2 stops34h 02m

Reykjavik Keflavik Intl

Thu 12/11

11:45 am-7:05 pm

2 stops37h 20m

$908

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 2/28

11:55 am-11:20 pm

2 stops29h 25m

Reykjavik Keflavik Intl

Wed 3/4

11:30 am-11:38 pm

2 stops42h 08m

$1,036

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 12/8

7:00 am-6:15 am

2 stops17h 15m

Reykjavik Keflavik Intl

Mon 12/15

4:50 pm-2:27 pm

2 stops27h 37m

$1,210

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 12/8

7:00 am-6:15 am

2 stops17h 15m

Reykjavik Keflavik Intl

Mon 12/15

4:50 pm-2:27 pm

2 stops27h 37m

$1,220

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 12/5

1:00 pm-2:20 pm

2 stops43h 20m

Reykjavik Keflavik Intl

Fri 12/12

3:25 pm-9:40 pm

2 stops36h 15m

$1,269

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-10:00 pm

2 stops36h 50m

$1,349

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
10,416 reviews
Search Air Canada flights
United AirlinesPriceFrom $595Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
DeltaPriceFrom $636Free CancellationRating
7.9
8,001 reviews
Search Delta flights
KLMPriceFrom $828Free CancellationRating
7.7
1,405 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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