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 33% 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.

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?

The number of operators available for flights from Lambert-St Louis Airport to Iceland is 4 as of October 2025.

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.

$678 Cheap Flights from St. Louis to Iceland in 2025/26

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8:45 am - 6:15 amSTL-KEF

15h 30m1 stop

5:15 pm - 11:01 amKEF-STL

23h 46m2 stops

$678Multiple Airlines

Find Deal

dom, jan 18 - sáb, jan 24

11:54 am - 9:15 amSTL-KEF

39h 21m2 stops

10:00 am - 9:24 pmKEF-STL

41h 24m2 stops

$683Finnair

Find Deal

dom, mar 1 - sáb, mar 7

11:55 am - 9:15 amSTL-KEF

39h 20m2 stops

6:00 pm - 10:59 pmKEF-STL

34h 59m2 stops

$685Multiple Airlines

Find Deal

dom, jan 18 - sáb, jan 24

1:20 pm - 9:15 amSTL-KEF

37h 55m2 stops

10:00 am - 7:30 pmKEF-STL

39h 30m2 stops

$692Finnair

Find Deal

qua, nov 12 - ter, nov 18

11:51 am - 4:50 pmSTL-KEF

22h 59m2 stops

3:40 pm - 11:40 pmKEF-STL

37h 00m2 stops

$708Scandinavian Airlines

Find Deal

seg, mar 2 - dom, mar 8

3:50 pm - 2:15 pmSTL-KEF

16h 25m2 stops

3:20 pm - 1:55 pmKEF-STL

28h 35m1 stop

$732Lufthansa

Find Deal

qua, nov 12 - ter, nov 18

3:50 pm - 2:15 pmSTL-KEF

16h 25m2 stops

3:20 pm - 1:55 pmKEF-STL

28h 35m1 stop

$733Lufthansa

Find Deal

qua, nov 12 - ter, nov 18

11:51 am - 3:25 pmSTL-KEF

21h 34m2 stops

3:40 pm - 11:40 pmKEF-STL

38h 00m2 stops

$738Scandinavian Airlines

Find Deal

seg, jan 12 - sex, jan 16

4:49 pm - 10:55 amSTL-KEF

36h 06m2 stops

11:55 am - 7:06 pmKEF-STL

37h 11m2 stops

$914British Airways

Find Deal

sáb, dez 6 - sáb, dez 13

6:29 pm - 10:40 amSTL-KEF

35h 11m2 stops

6:10 pm - 9:48 pmKEF-STL

32h 38m2 stops

$1,125British Airways

Find Deal

sex, mar 20 - sex, mar 27

Finnair flights from St. Louis to Iceland

Our best Finnair deals on St. Louis to Iceland flight tickets

Finnair

Mar 1

STL11:54 amLambert-St Louis

39h 21m

2 stops

KEF9:15 amReykjavik Keflavik Intl

Mar 7

KEF10:00 amReykjavik Keflavik Intl

41h 24m

2 stops

STL9:24 pmLambert-St Louis

$683

Find similar

Finnair

Nov 12

STL1:20 pmLambert-St Louis

37h 55m

2 stops

KEF9:15 amReykjavik Keflavik Intl

Nov 18

KEF10:00 amReykjavik Keflavik Intl

39h 30m

2 stops

STL7:30 pmLambert-St Louis

$692

Find similar

Finnair

Dec 30

STL11:41 amLambert-St Louis

39h 19m

2 stops

KEF9:00 amReykjavik Keflavik Intl

Jan 6

KEF10:00 amReykjavik Keflavik Intl

39h 29m

2 stops

STL7:29 pmLambert-St Louis

$753

Find similar

Scandinavian Airlines flights from St. Louis to Iceland

Our best Scandinavian Airlines deals on St. Louis to Iceland flight tickets

Scandinavian Airlines

Mar 2

STL11:51 amLambert-St Louis

22h 59m

2 stops

KEF4:50 pmReykjavik Keflavik Intl

Mar 8

KEF3:40 pmReykjavik Keflavik Intl

37h 00m

2 stops

STL11:40 pmLambert-St Louis

$708

Find similar

Scandinavian Airlines

Jan 12

STL11:51 amLambert-St Louis

21h 34m

2 stops

KEF3:25 pmReykjavik Keflavik Intl

Jan 16

KEF3:40 pmReykjavik Keflavik Intl

38h 00m

2 stops

STL11:40 pmLambert-St Louis

$738

Find similar

Scandinavian Airlines

Jan 10

STL10:00 amLambert-St Louis

23h 25m

2 stops

KEF3:25 pmReykjavik Keflavik Intl

Jan 19

KEF7:35 amReykjavik Keflavik Intl

19h 04m

2 stops

STL8:39 pmLambert-St Louis

$828

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

dom 1/18

8:45 am-6:15 am

1 stop15h 30m

Reykjavik Keflavik Intl

sáb 1/24

5:15 pm-11:01 am

2 stops23h 46m

$678

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

dom 3/1

11:54 am-9:15 am

2 stops39h 21m

Reykjavik Keflavik Intl

sáb 3/7

10:00 am-9:24 pm

2 stops41h 24m

$683

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

dom 1/18

11:55 am-9:15 am

2 stops39h 20m

Reykjavik Keflavik Intl

sáb 1/24

6:00 pm-10:59 pm

2 stops34h 59m

$685

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

qua 11/12

1:20 pm-9:15 am

2 stops37h 55m

Reykjavik Keflavik Intl

ter 11/18

10:00 am-7:30 pm

2 stops39h 30m

$692

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

seg 3/2

11:51 am-4:50 pm

2 stops22h 59m

Reykjavik Keflavik Intl

dom 3/8

3:40 pm-11:40 pm

2 stops37h 00m

$708

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

qua 11/12

3:50 pm-2:15 pm

2 stops16h 25m

Reykjavik Keflavik Intl

ter 11/18

3:20 pm-1:55 pm

1 stop28h 35m

$732

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

qua 11/12

3:50 pm-2:15 pm

2 stops16h 25m

Reykjavik Keflavik Intl

ter 11/18

3:20 pm-1:55 pm

1 stop28h 35m

$733

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

seg 1/12

11:51 am-3:25 pm

2 stops21h 34m

Reykjavik Keflavik Intl

sex 1/16

3:40 pm-11:40 pm

2 stops38h 00m

$738

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

sáb 12/6

4:49 pm-10:55 am

2 stops36h 06m

Reykjavik Keflavik Intl

sáb 12/13

11:55 am-7:06 pm

2 stops37h 11m

$914

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

sex 3/20

6:29 pm-10:40 am

2 stops35h 11m

Reykjavik Keflavik Intl

sex 3/27

6:10 pm-9:48 pm

2 stops32h 38m

$1,125

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Prices

Airlines

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?
The number of operators available for flights from Lambert-St Louis Airport to Iceland is 4 as of October 2025.
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 Canada	PriceFrom $566	Free Cancellation	Rating 7.1 10,346 reviews	Search Air Canada flights
United Airlines	PriceFrom $595	Free Cancellation	Rating 7.4 8,992 reviews	Search United Airlines flights
Delta	PriceFrom $636	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
KLM	PriceFrom $828	Free Cancellation	Rating 7.7 1,404 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in Iceland

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Cheap flights from St. Louis to Iceland from $678

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 1/18. 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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Filter for what you want

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Finnair flights from St. Louis to Iceland

Our best Finnair deals on St. Louis to Iceland flight tickets

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Our best Scandinavian Airlines deals on St. Louis to Iceland flight tickets

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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?

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

What airlines fly to Iceland?

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

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

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?

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

Best airlines flying from St. Louis to Iceland

Compare and see reviews for airlines that fly from St. Louis to Iceland with momondo

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Iceland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Iceland

Popular cities in Iceland

Popular flights according to clicks in the last 7 days on momondo