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 January 2026.

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.

$429 Cheap Flights from St. Louis to Iceland in 2026

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Find the cheapest flights from St. Louis to Iceland

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:50 am - 9:30 am

STL

KEF

17h 40m

2 stops

11:25 am - 8:42 pm

KEF

STL

14h 17m

2 stops

$695Virgin Atlantic

Thu, Apr 16 - Thu, Apr 23

8:41 am - 9:25 am

STL

KEF

19h 44m

1 stop

4:45 pm - 7:51 am

KEF

STL

20h 06m

1 stop

$780Multiple Airlines

Sat, Apr 4 - Fri, Apr 10

3:30 pm - 11:25 pm

STL

KEF

26h 55m

1 stop

12:20 am - 1:25 pm

KEF

STL

18h 05m

1 stop

$809Lufthansa

Fri, Apr 3 - Sat, Apr 11

8:41 am - 9:25 am

STL

KEF

19h 44m

1 stop

4:45 pm - 7:51 am

KEF

STL

20h 06m

1 stop

$818Multiple Airlines

Sat, Apr 4 - Sun, Apr 12

3:30 pm - 11:25 pm

STL

KEF

26h 55m

1 stop

12:20 am - 9:08 pm

KEF

STL

49h 48m

2 stops

$837Lufthansa

Fri, Apr 3 - Sat, Apr 11

5:00 pm - 9:30 am

STL

KEF

11h 30m

1 stop

11:25 am - 4:40 pm

KEF

STL

10h 15m

1 stop

$839Multiple Airlines

Sun, Jul 12 - Tue, Jul 21

3:30 pm - 11:25 pm

STL

KEF

26h 55m

1 stop

2:45 pm - 1:25 pm

KEF

STL

27h 40m

2 stops

$841Lufthansa

Fri, Apr 3 - Sat, Apr 11

11:51 am - 9:30 am

STL

KEF

16h 39m

2 stops

11:25 am - 11:37 pm

KEF

STL

17h 12m

2 stops

$843Virgin Atlantic

Sun, Jul 12 - Tue, Jul 21

5:00 am - 8:45 am

STL

KEF

22h 45m

2 stops

10:00 am - 6:32 pm

KEF

STL

13h 32m

2 stops

$845Air Canada

Tue, Jul 7 - Tue, Jul 14

3:30 pm - 11:25 pm

STL

KEF

26h 55m

1 stop

1:10 am - 9:08 pm

KEF

STL

24h 58m

2 stops

$852Lufthansa

Fri, Apr 3 - Thu, Apr 9

Lufthansa flights from St. Louis to Iceland

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

Lufthansa

Apr 3

STL3:30 pmLambert-St Louis

26h 55m

1 stop

KEF11:25 pmReykjavik Keflavik Intl

Apr 11

KEF12:20 amReykjavik Keflavik Intl

18h 05m

1 stop

STL1:25 pmLambert-St Louis

$809

Lufthansa

Apr 3

STL3:30 pmLambert-St Louis

26h 55m

1 stop

KEF11:25 pmReykjavik Keflavik Intl

Apr 11

KEF12:20 amReykjavik Keflavik Intl

49h 48m

2 stops

STL9:08 pmLambert-St Louis

$837

Lufthansa

Apr 3

STL3:30 pmLambert-St Louis

26h 55m

1 stop

KEF11:25 pmReykjavik Keflavik Intl

Apr 11

KEF2:45 pmReykjavik Keflavik Intl

27h 40m

2 stops

STL1:25 pmLambert-St Louis

$841

Delta flights from St. Louis to Iceland

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

Delta

Apr 2

STL7:03 amLambert-St Louis

21h 27m

2 stops

KEF9:30 amReykjavik Keflavik Intl

Apr 10

KEF11:25 amReykjavik Keflavik Intl

41h 00m

2 stops

STL11:25 pmLambert-St Louis

$858

Delta

Apr 2

STL1:34 pmLambert-St Louis

14h 56m

1 stop

KEF9:30 amReykjavik Keflavik Intl

Apr 12

KEF11:25 amReykjavik Keflavik Intl

29h 40m

1 stop

STL12:05 pmLambert-St Louis

$898

Delta

Mar 28

STL7:20 amLambert-St Louis

21h 10m

1 stop

KEF9:30 amReykjavik Keflavik Intl

Apr 4

KEF11:25 amReykjavik Keflavik Intl

29h 54m

1 stop

STL12:19 pmLambert-St Louis

$901

Fly from

Fly to

Route

Depart

Return

Price

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 4/16

10:50 am-9:30 am

2 stops17h 40m

Reykjavik Keflavik Intl

Thu 4/23

11:25 am-8:42 pm

2 stops14h 17m

$695

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 4/4

8:41 am-9:25 am

1 stop19h 44m

Reykjavik Keflavik Intl

Fri 4/10

4:45 pm-7:51 am

1 stop20h 06m

$780

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 4/3

3:30 pm-11:25 pm

1 stop26h 55m

Reykjavik Keflavik Intl

Sat 4/11

12:20 am-1:25 pm

1 stop18h 05m

$809

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 4/4

8:41 am-9:25 am

1 stop19h 44m

Reykjavik Keflavik Intl

Sun 4/12

4:45 pm-7:51 am

1 stop20h 06m

$818

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 4/3

3:30 pm-11:25 pm

1 stop26h 55m

Reykjavik Keflavik Intl

Sat 4/11

12:20 am-9:08 pm

2 stops49h 48m

$837

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 7/12

5:00 pm-9:30 am

1 stop11h 30m

Reykjavik Keflavik Intl

Tue 7/21

11:25 am-4:40 pm

1 stop10h 15m

$839

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 4/3

3:30 pm-11:25 pm

1 stop26h 55m

Reykjavik Keflavik Intl

Sat 4/11

2:45 pm-1:25 pm

2 stops27h 40m

$841

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 7/12

11:51 am-9:30 am

2 stops16h 39m

Reykjavik Keflavik Intl

Tue 7/21

11:25 am-11:37 pm

2 stops17h 12m

$843

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 7/7

5:00 am-8:45 am

2 stops22h 45m

Reykjavik Keflavik Intl

Tue 7/14

10:00 am-6:32 pm

2 stops13h 32m

$845

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 4/3

3:30 pm-11:25 pm

1 stop26h 55m

Reykjavik Keflavik Intl

Thu 4/9

1:10 am-9:08 pm

2 stops24h 58m

$852

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted 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

What is the cheapest airline that flies from Lambert-St Louis to Iceland?

British Airways is the most popular carrier operating from Lambert-St Louis to Iceland

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 37% 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	11h 30m
Direct flights	None

The fastest flight from St. Louis to Iceland takes 11h 30m

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 January 2026.
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 10,666 reviews	Search Air Canada flights
United Airlines	PriceFrom $595	Free Cancellation	Rating 7.4 9,216 reviews	Search United Airlines flights
Delta	PriceFrom $636	Free Cancellation	Rating 7.9 8,125 reviews	Search Delta flights
KLM	PriceFrom $828	Free Cancellation	Rating 7.7 1,443 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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Find better results for your trip to Iceland

Popular cities in Iceland

Flights to Reykjavikfrom $325

Flights to Akureyrifrom $564

Flights to Egilsstaðir

Cheap flights from St. Louis to Iceland from $429

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 3/19. 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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Find the cheapest flights from St. Louis to Iceland

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Lufthansa flights from St. Louis to Iceland

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

Delta flights from St. Louis to Iceland

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

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See travel insights to Iceland from

How to get the cheapest flight ticket from St. Louis to Iceland

What is the cheapest airline that flies from Lambert-St Louis to Iceland?

British Airways is the most popular carrier operating from Lambert-St Louis 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

Fastest flight time

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