What are the cheapest airlines to fly from Iceland to St. Louis one-way?

$750 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Delta and Lufthansa, with prices starting from $756 and $1,258, respectively.

What is the cheapest month to book a flight from Iceland to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Iceland to St. Louis (average of $311). Flying from Iceland to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IS to STL?

When flying from Iceland to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to St. Louis from Iceland?

Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from Iceland to St. Louis.

Can I find deals for flights from Iceland to St. Louis that include hotel bookings?

Yes. In addition to deals on Iceland to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Iceland to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Iceland to St. Louis.

Can I find deals for business class flights from Iceland to St. Louis?

Yes. Cheapflights offers flight deals from Iceland to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,108+ Flights from Iceland to St. Louis

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Cheap flight deals from Iceland to St. Louis

Round-trip from	$728 (Flightnetwork)

From Iceland to Lambert-St Louis

Search Deals

Find flight deals from Iceland to St. Louis

Cheapest flights from Iceland to St. Louis
Explore the most affordable flight options available from Iceland to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Sat 7/269:30 amKEF - STL

2 stops15h 15mAir Canada

Sat 8/25:00 amSTL - KEF

2 stops22h 10mAir Canada

Deal found 6/10

$728

Fri 7/259:30 amKEF - STL

1 stop16h 20mUnited Airlines

Fri 8/18:00 amSTL - KEF

1 stop19h 30mUnited Airlines

Deal found 6/10

$746

Sat 7/269:35 amKEF - STL

3 stops29h 17mMultiple Airlines

Sat 8/24:00 pmSTL - KEF

3 stops35h 15mMultiple Airlines

Deal found 6/10

$876

Fri 6/2711:25 amKEF - STL

2 stops14h 15mDelta

Tue 7/111:29 amSTL - KEF

1 stop14h 31mDelta

Deal found 6/11

$961

Thu 6/261:15 amKEF - STL

2 stops17h 15mLufthansa

Tue 7/15:31 pmSTL - KEF

2 stops25h 04mLufthansa

Deal found 6/11

$1,244

Thu 7/241:05 amKEF - STL

3 stops25h 37mScandinavian Airlines

Fri 8/13:41 pmSTL - KEF

2 stops27h 09mScandinavian Airlines

Deal found 6/10

$1,593

Thu 7/2412:10 amKEF - STL

2 stops28h 25mAustrian Airlines

Fri 8/11:20 pmSTL - KEF

2 stops29h 00mAustrian Airlines

Deal found 6/10

$1,643

Best flights from Iceland to St. Louis
Discover carefully curated flight deals from Iceland to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Sat 7/269:30 amKEF - STL

2 stops15h 15mAir Canada

Sat 8/25:00 amSTL - KEF

2 stops22h 10mAir Canada

Deal found 6/10

$728

Fri 7/259:30 amKEF - STL

1 stop16h 20mUnited Airlines

Fri 8/18:00 amSTL - KEF

1 stop19h 30mUnited Airlines

Deal found 6/10

$746

Sat 7/269:35 amKEF - STL

3 stops29h 17mMultiple Airlines

Sat 8/24:00 pmSTL - KEF

3 stops35h 15mMultiple Airlines

Deal found 6/10

$876

Fri 6/2711:25 amKEF - STL

2 stops14h 15mDelta

Tue 7/111:29 amSTL - KEF

1 stop14h 31mDelta

Deal found 6/11

$961

Thu 6/261:15 amKEF - STL

2 stops17h 15mLufthansa

Tue 7/15:31 pmSTL - KEF

2 stops25h 04mLufthansa

Deal found 6/11

$1,244

Thu 7/241:05 amKEF - STL

3 stops25h 37mScandinavian Airlines

Fri 8/13:41 pmSTL - KEF

2 stops27h 09mScandinavian Airlines

Deal found 6/10

$1,593

Thu 7/2412:10 amKEF - STL

2 stops28h 25mAustrian Airlines

Fri 8/11:20 pmSTL - KEF

2 stops29h 00mAustrian Airlines

Deal found 6/10

$1,643

Last-minute flights from Iceland to St. Louis
Discover last-minute flight deals from Iceland to St. Louis. Data last updated June 12, 2025 and is based on user searches.

Thu 6/261:15 amKEF - STL

2 stops17h 15mLufthansa

Tue 7/15:31 pmSTL - KEF

2 stops25h 04mLufthansa

Deal found 6/11

$1,244

Fri 6/2711:25 amKEF - STL

2 stops14h 15mDelta

Tue 7/111:29 amSTL - KEF

1 stop14h 31mDelta

Deal found 6/11

$961

Thu 7/241:05 amKEF - STL

3 stops25h 37mScandinavian Airlines

Fri 8/13:41 pmSTL - KEF

2 stops27h 09mScandinavian Airlines

Deal found 6/10

$1,593

Thu 7/2412:10 amKEF - STL

2 stops28h 25mAustrian Airlines

Fri 8/11:20 pmSTL - KEF

2 stops29h 00mAustrian Airlines

Deal found 6/10

$1,643

Fri 7/259:30 amKEF - STL

1 stop16h 20mUnited Airlines

Fri 8/18:00 amSTL - KEF

1 stop19h 30mUnited Airlines

Deal found 6/10

$746

Sat 7/269:30 amKEF - STL

2 stops15h 15mAir Canada

Sat 8/25:00 amSTL - KEF

2 stops22h 10mAir Canada

Deal found 6/10

$728

Sat 7/269:35 amKEF - STL

3 stops29h 17mMultiple Airlines

Sat 8/24:00 pmSTL - KEF

3 stops35h 15mMultiple Airlines

Deal found 6/10

$876

One-way flights from Iceland to St. Louis
Search for one-way flight options from Iceland to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Wed 8/139:35 amKEF - STL

2 stops15h 58mWestJet

Deal found 6/11

$750

Wed 8/138:50 amKEF - STL

2 stops19h 32mDelta

Deal found 6/10

$756

Tue 8/121:15 amKEF - STL

2 stops19h 32mLufthansa

Deal found 6/11

$1,258

Tue 8/121:15 amKEF - STL

2 stops17h 15mMultiple Airlines

Deal found 6/10

$1,320

Wed 8/139:30 amKEF - STL

3 stops17h 05mAir Canada

Deal found 6/10

$1,381

Cheapflights Fare Finder

Use the filters below to find and compare flights from Iceland to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sat 7/26

9:30 am-7:45 pm

2 stops15h 15m

Lambert-St Louis

Sat 8/2

5:00 am-8:10 am

2 stops22h 10m

$728

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Fri 7/25

9:30 am-8:50 pm

1 stop16h 20m

Lambert-St Louis

Fri 8/1

8:00 am-8:30 am

1 stop19h 30m

$746

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sat 7/26

9:35 am-9:52 am

3 stops29h 17m

Lambert-St Louis

Sat 8/2

4:00 pm-8:15 am

3 stops35h 15m

$876

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Fri 6/27

11:25 am-8:40 pm

2 stops14h 15m

Lambert-St Louis

Tue 7/1

11:29 am-7:00 am

1 stop14h 31m

$961

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 6/26

1:15 am-1:30 pm

2 stops17h 15m

Lambert-St Louis

Tue 7/1

5:31 pm-11:35 pm

2 stops25h 04m

$1,244

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 7/24

1:05 am-9:42 pm

3 stops25h 37m

Lambert-St Louis

Fri 8/1

3:41 pm-11:50 pm

2 stops27h 09m

$1,593

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 7/24

12:10 am-11:35 pm

2 stops28h 25m

Lambert-St Louis

Fri 8/1

1:20 pm-11:20 pm

2 stops29h 00m

$1,643

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Wed 8/13

9:35 am-8:33 pm

2 stops15h 58m

$750

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Wed 8/13

8:50 am-11:22 pm

2 stops19h 32m

$756

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Tue 8/12

1:15 am-3:47 pm

2 stops19h 32m

$1,258

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 12 results

Best time to book a flight from Iceland to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Iceland with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Iceland to St. Louis

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,946 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Austrian Airlines

7.6

Good

802 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Scandinavian Airlines

7.3

Good

1,387 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

WestJet

7.2

Good

2,868 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to St. Louis from Iceland?
Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from Iceland to St. Louis.
What are the cheapest airlines to fly from Iceland to St. Louis one-way?
$750 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Delta and Lufthansa, with prices starting from $756 and $1,258, respectively.
Can I find deals for flights from Iceland to St. Louis that include hotel bookings?
Yes. In addition to deals on Iceland to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Iceland to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Iceland to St. Louis.
Can I find deals for business class flights from Iceland to St. Louis?
Yes. Cheapflights offers flight deals from Iceland to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Iceland to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Iceland to St. Louis (average of $311). Flying from Iceland to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

O'Fallon

Maryland Heights

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Collinsville

Eureka

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$728+ Cheap flights from Iceland to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Iceland to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Iceland to St. Louis

Keep the following information in mind while searching for Iceland to St. Louis flight deals. Data was last updated June 12, 2025.

Round-trip from

Find flight deals from Iceland to St. Louis

Cheapest flights from Iceland to St. LouisExplore the most affordable flight options available from Iceland to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Iceland to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Iceland to St. Louis that are best for you.

Best time to book a flight from Iceland to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Iceland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Iceland to St. Louis

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

Related info for your journey

Find useful and relevant information for your journey from Iceland to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to St. Louis from Iceland?

What are the cheapest airlines to fly from Iceland to St. Louis one-way?

Can I find deals for flights from Iceland to St. Louis that include hotel bookings?

How can I find direct flights from Iceland to St. Louis?

Can I find deals for business class flights from Iceland to St. Louis?

What is the cheapest month to book a flight from Iceland to St. Louis?

Traveling to a place near Iceland?

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Alternative routes for Iceland to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Iceland to St. Louis
Explore the most affordable flight options available from Iceland to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.