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 36% 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 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.

$374 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.

6:32 am - 9:30 am

STL

KEF

21h 58m2 stops

11:25 am - 9:05 am

KEF

STL

26h 40m2 stops

$493Delta

Wed, Apr 1 - Tue, Apr 7

3:50 pm - 1:10 am

STL

KEF

27h 20m2 stops

3:20 pm - 2:55 pm

KEF

STL

28h 35m1 stop

$643Lufthansa

Wed, Mar 4 - Tue, Mar 10

3:50 pm - 1:10 am

STL

KEF

27h 20m2 stops

3:20 pm - 10:59 pm

KEF

STL

36h 39m2 stops

$670Lufthansa

Wed, Mar 4 - Tue, Mar 10

3:50 pm - 7:00 am

STL

KEF

10h 10m1 stop

9:30 am - 11:01 pm

KEF

STL

18h 31m1 stop

$733KLM

Sat, May 9 - Sun, May 24

3:50 pm - 7:00 am

STL

KEF

10h 10m1 stop

8:50 am - 7:12 pm

KEF

STL

15h 22m2 stops

$738KLM

Sat, May 9 - Sun, May 24

4:50 pm - 2:15 pm

STL

KEF

16h 25m2 stops

3:10 pm - 2:55 pm

KEF

STL

28h 45m2 stops

$769Lufthansa

Wed, Mar 11 - Thu, Mar 19

6:04 am - 9:30 am

STL

KEF

22h 26m2 stops

11:25 am - 8:42 pm

KEF

STL

14h 17m2 stops

$792Delta

Wed, Apr 1 - Tue, Apr 7

1:15 pm - 2:20 pm

STL

KEF

19h 05m2 stops

3:10 pm - 10:58 pm

KEF

STL

37h 48m2 stops

$813Lufthansa

Sat, Jan 17 - Sat, Jan 24

3:30 pm - 1:05 pm

STL

KEF

16h 35m1 stop

2:10 pm - 1:25 pm

KEF

STL

28h 15m1 stop

$858Lufthansa

Wed, Apr 1 - Tue, Apr 7

8:25 am - 6:35 am

STL

KEF

17h 10m1 stop

5:00 pm - 7:45 am

KEF

STL

19h 45m1 stop

$861Multiple Airlines

Wed, Mar 11 - Thu, Mar 19

Delta flights from St. Louis to Iceland

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

Delta

Apr 1

STL6:32 amLambert-St Louis

21h 58m

2 stops

KEF9:30 amReykjavik Keflavik Intl

Apr 7

KEF11:25 amReykjavik Keflavik Intl

26h 40m

2 stops

STL9:05 amLambert-St Louis

$493

Find similar

Delta

Apr 1

STL6:04 amLambert-St Louis

22h 26m

2 stops

KEF9:30 amReykjavik Keflavik Intl

Apr 7

KEF11:25 amReykjavik Keflavik Intl

14h 17m

2 stops

STL8:42 pmLambert-St Louis

$792

Find similar

Lufthansa flights from St. Louis to Iceland

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

Lufthansa

Mar 4

STL3:50 pmLambert-St Louis

27h 20m

2 stops

KEF1:10 amReykjavik Keflavik Intl

Mar 10

KEF3:20 pmReykjavik Keflavik Intl

28h 35m

1 stop

STL2:55 pmLambert-St Louis

$643

Find similar

Lufthansa

Mar 4

STL3:50 pmLambert-St Louis

27h 20m

2 stops

KEF1:10 amReykjavik Keflavik Intl

Mar 10

KEF3:20 pmReykjavik Keflavik Intl

36h 39m

2 stops

STL10:59 pmLambert-St Louis

$670

Find similar

Lufthansa

Mar 11

STL4:50 pmLambert-St Louis

16h 25m

2 stops

KEF2:15 pmReykjavik Keflavik Intl

Mar 19

KEF3:10 pmReykjavik Keflavik Intl

28h 45m

2 stops

STL2:55 pmLambert-St Louis

$769

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 4/1

6:32 am-9:30 am

2 stops21h 58m

Reykjavik Keflavik Intl

Tue 4/7

11:25 am-9:05 am

2 stops26h 40m

$493

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 3/4

3:50 pm-1:10 am

2 stops27h 20m

Reykjavik Keflavik Intl

Tue 3/10

3:20 pm-2:55 pm

1 stop28h 35m

$643

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 3/4

3:50 pm-1:10 am

2 stops27h 20m

Reykjavik Keflavik Intl

Tue 3/10

3:20 pm-10:59 pm

2 stops36h 39m

$670

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 5/9

3:50 pm-7:00 am

1 stop10h 10m

Reykjavik Keflavik Intl

Sun 5/24

9:30 am-11:01 pm

1 stop18h 31m

$733

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 5/9

3:50 pm-7:00 am

1 stop10h 10m

Reykjavik Keflavik Intl

Sun 5/24

8:50 am-7:12 pm

2 stops15h 22m

$738

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 3/11

4:50 pm-2:15 pm

2 stops16h 25m

Reykjavik Keflavik Intl

Thu 3/19

3:10 pm-2:55 pm

2 stops28h 45m

$769

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 4/1

6:04 am-9:30 am

2 stops22h 26m

Reykjavik Keflavik Intl

Tue 4/7

11:25 am-8:42 pm

2 stops14h 17m

$792

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 1/17

1:15 pm-2:20 pm

2 stops19h 05m

Reykjavik Keflavik Intl

Sat 1/24

3:10 pm-10:58 pm

2 stops37h 48m

$813

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 4/1

3:30 pm-1:05 pm

1 stop16h 35m

Reykjavik Keflavik Intl

Tue 4/7

2:10 pm-1:25 pm

1 stop28h 15m

$858

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 3/11

8:25 am-6:35 am

1 stop17h 10m

Reykjavik Keflavik Intl

Thu 3/19

5:00 pm-7:45 am

1 stop19h 45m

$861

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

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

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 10,551 reviews	Search Air Canada flights
United Airlines	PriceFrom $595	Free Cancellation	Rating 7.4 9,106 reviews	Search United Airlines flights
Delta	PriceFrom $636	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
KLM	PriceFrom $828	Free Cancellation	Rating 7.7 1,434 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 $617

Flights to Egilsstaðir

Cheap flights from St. Louis to Iceland from $374

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 2/21. 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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Big names and deals

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Filter for what you want

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Delta flights from St. Louis to Iceland

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

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Our best Lufthansa 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 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

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