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 December 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.

$421 Cheap Flights from St. Louis to Iceland in 2025/26

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Find the cheapest flights from St. Louis to Iceland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:06 pm - 7:50 am

STL

KEF

38h 44m2 stops

8:35 am - 6:17 pm

KEF

STL

38h 42m2 stops

$505Finnair

Mon, Apr 13 - Mon, Apr 20

1:11 pm - 9:30 am

STL

KEF

15h 19m2 stops

11:25 am - 8:38 pm

KEF

STL

14h 13m2 stops

$543Delta

Mon, Apr 13 - Mon, Apr 20

7:00 pm - 2:15 pm

STL

KEF

38h 15m2 stops

12:20 am - 9:08 pm

KEF

STL

25h 48m2 stops

$639Lufthansa

Sun, Mar 22 - Mon, Mar 30

1:39 pm - 9:30 am

STL

KEF

14h 51m2 stops

11:25 am - 4:32 pm

KEF

STL

34h 07m2 stops

$643Air France

Wed, Apr 1 - Tue, Apr 7

7:00 pm - 2:15 pm

STL

KEF

38h 15m2 stops

2:10 pm - 1:25 pm

KEF

STL

28h 15m1 stop

$655Lufthansa

Sun, Mar 22 - Tue, Mar 31

1:11 pm - 9:30 am

STL

KEF

15h 19m2 stops

11:25 am - 7:12 pm

KEF

STL

12h 47m2 stops

$658Multiple Airlines

Wed, Apr 29 - Sat, May 9

4:39 pm - 9:55 am

STL

KEF

36h 16m2 stops

10:00 am - 4:13 pm

KEF

STL

35h 13m2 stops

$749British Airways

Sun, Apr 26 - Sat, May 2

9:40 pm - 9:55 am

STL

KEF

31h 15m1 stop

10:00 am - 4:13 pm

KEF

STL

35h 13m2 stops

$756Multiple Airlines

Sun, Apr 26 - Sat, May 2

5:42 pm - 6:05 am

STL

KEF

30h 23m2 stops

4:55 pm - 2:46 pm

KEF

STL

27h 51m1 stop

$784Multiple Airlines

Tue, Jan 27 - Tue, Feb 3

7:00 am - 6:15 am

STL

KEF

18h 15m1 stop

7:45 pm - 2:51 pm

KEF

STL

24h 06m1 stop

$789Multiple Airlines

Tue, Mar 24 - Tue, Mar 31

British Airways flights from St. Louis to Iceland

Our best British Airways deals on St. Louis to Iceland flight tickets

British Airways

Apr 26

STL4:39 pmLambert-St Louis

36h 16m

2 stops

KEF9:55 amReykjavik Keflavik Intl

May 2

KEF10:00 amReykjavik Keflavik Intl

35h 13m

2 stops

STL4:13 pmLambert-St Louis

$749

Find similar

British Airways

Jan 13

STL3:20 pmLambert-St Louis

37h 25m

2 stops

KEF10:45 amReykjavik Keflavik Intl

Jan 20

KEF11:50 amReykjavik Keflavik Intl

36h 24m

2 stops

STL6:14 pmLambert-St Louis

$1,462

Find similar

Air Canada flights from St. Louis to Iceland

Our best Air Canada deals on St. Louis to Iceland flight tickets

Air Canada

Jun 2

STL1:00 pmLambert-St Louis

13h 55m

1 stop

KEF7:55 amReykjavik Keflavik Intl

Jun 10

KEF9:15 amReykjavik Keflavik Intl

35h 06m

2 stops

STL3:21 pmLambert-St Louis

$897

Find similar

Air Canada

Jun 2

STL9:30 amLambert-St Louis

17h 25m

2 stops

KEF7:55 amReykjavik Keflavik Intl

Jun 10

KEF9:15 amReykjavik Keflavik Intl

32h 05m

2 stops

STL12:20 pmLambert-St Louis

$902

Find similar

Air Canada

Jun 11

STL1:00 pmLambert-St Louis

13h 55m

1 stop

KEF7:55 amReykjavik Keflavik Intl

Jun 18

KEF10:00 amReykjavik Keflavik Intl

31h 21m

1 stop

STL12:21 pmLambert-St Louis

$913

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 4/13

12:06 pm-7:50 am

2 stops38h 44m

Reykjavik Keflavik Intl

Mon 4/20

8:35 am-6:17 pm

2 stops38h 42m

$505

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 4/13

1:11 pm-9:30 am

2 stops15h 19m

Reykjavik Keflavik Intl

Mon 4/20

11:25 am-8:38 pm

2 stops14h 13m

$543

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 3/22

7:00 pm-2:15 pm

2 stops38h 15m

Reykjavik Keflavik Intl

Mon 3/30

12:20 am-9:08 pm

2 stops25h 48m

$639

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 4/1

1:39 pm-9:30 am

2 stops14h 51m

Reykjavik Keflavik Intl

Tue 4/7

11:25 am-4:32 pm

2 stops34h 07m

$643

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 3/22

7:00 pm-2:15 pm

2 stops38h 15m

Reykjavik Keflavik Intl

Tue 3/31

2:10 pm-1:25 pm

1 stop28h 15m

$655

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 4/29

1:11 pm-9:30 am

2 stops15h 19m

Reykjavik Keflavik Intl

Sat 5/9

11:25 am-7:12 pm

2 stops12h 47m

$658

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 4/26

4:39 pm-9:55 am

2 stops36h 16m

Reykjavik Keflavik Intl

Sat 5/2

10:00 am-4:13 pm

2 stops35h 13m

$749

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 4/26

9:40 pm-9:55 am

1 stop31h 15m

Reykjavik Keflavik Intl

Sat 5/2

10:00 am-4:13 pm

2 stops35h 13m

$756

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 1/27

5:42 pm-6:05 am

2 stops30h 23m

Reykjavik Keflavik Intl

Tue 2/3

4:55 pm-2:46 pm

1 stop27h 51m

$784

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 3/24

7:00 am-6:15 am

1 stop18h 15m

Reykjavik Keflavik Intl

Tue 3/31

7:45 pm-2:51 pm

1 stop24h 06m

$789

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

Air France, KLM, and Delta are the most popular carriers 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	8h 30m
Direct flights	None

The fastest flight from St. Louis to Iceland takes 8h 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 December 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 10,566 reviews	Search Air Canada flights
United Airlines	PriceFrom $595	Free Cancellation	Rating 7.4 9,125 reviews	Search United Airlines flights
Delta	PriceFrom $636	Free Cancellation	Rating 7.9 8,016 reviews	Search Delta flights
KLM	PriceFrom $828	Free Cancellation	Rating 7.7 1,435 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 $305

Flights to Akureyrifrom $560

Flights to Egilsstaðir

Cheap flights from St. Louis to Iceland from $421

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 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Iceland

Cheap round-trip flights

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British Airways flights from St. Louis to Iceland

Our best British Airways deals on St. Louis to Iceland flight tickets

Air Canada flights from St. Louis to Iceland

Our best Air Canada 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?

Air France, KLM, and Delta are the most popular carriers 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