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Iceland

$443+ Cheap flights from St. Louis (STL) to Iceland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KEF
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from St. Louis to Iceland

Cheapest flights from St. Louis to Iceland
Explore the most affordable flight options available from St. Louis to Iceland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:43 pmSTL - KEF
1 stop28h 22mMultiple Airlines
Mon 12/84:55 pmKEF - STL
2 stops35h 38mMultiple Airlines
Deal found 12/2$1,214
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:10 pmSTL - KEF
2 stops25h 55mMultiple Airlines
Sun 12/284:55 pmKEF - STL
1 stop23h 07mMultiple Airlines
Deal found 12/3$1,278
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:10 pmSTL - KEF
2 stops25h 55mMultiple Airlines
Sun 12/284:55 pmKEF - STL
1 stop23h 07mMultiple Airlines
Deal found 12/3$1,279
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:43 pmSTL - KEF
1 stop28h 22mMultiple Airlines
Mon 12/294:50 pmKEF - STL
2 stops35h 43mMultiple Airlines
Deal found 12/3$1,305
This Kiwi.com deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:43 pmSTL - KEF
1 stop28h 22mMultiple Airlines
Sun 12/75:00 pmKEF - STL
2 stops21h 59mMultiple Airlines
Deal found 12/1$1,347
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:50 amSTL - KEF
2 stops14h 25mMultiple Airlines
Sun 12/284:55 pmKEF - STL
1 stop23h 07mMultiple Airlines
Deal found 12/3$1,349
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:43 pmSTL - KEF
1 stop28h 22mMultiple Airlines
Sat 12/275:00 pmKEF - STL
2 stops22h 40mMultiple Airlines
Deal found 12/3$1,374
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:10 pmSTL - KEF
2 stops25h 55mMultiple Airlines
Sat 12/275:15 pmKEF - STL
1 stop35h 18mMultiple Airlines
Deal found 12/3$1,436
This Gurufare deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:50 amSTL - KEF
2 stops20h 25mLufthansa
Sun 12/73:20 pmKEF - STL
2 stops38h 22mLufthansa
Deal found 12/1$1,460
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:10 pmSTL - KEF
2 stops25h 55mMultiple Airlines
Mon 12/295:15 pmKEF - STL
1 stop35h 18mMultiple Airlines
Deal found 12/3$1,466

Find flight deals from St. Louis to Iceland

Keep the following information in mind while searching for St. Louis to Iceland flight deals. Data was last updated December 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$628
(Kiwi.com)

One-way from

$443
(Kiwi.com)

Popular in

March

Cheapest in

January
Provider with most accurate pricing for Lambert-St Louis-Reykjavik (REK) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Reykjavik (REK) flights.
Search Deals
From Lambert-St Louis to Iceland
Search Deals
One-way flight from Lambert-St Louis to Iceland
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Iceland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from St. Louis to Iceland that are best for you.

Fly from

St. Louis

Fly to

Iceland

Route

Depart

Return

Price

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 4/23

6:29 pm-4:25 pm

2 stops16h 56m

Reykjavik Keflavik Intl

Tue 4/28

5:10 pm-9:48 pm

2 stops33h 38m

$754

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 2/3

5:42 pm-6:05 am

2 stops30h 23m

Reykjavik Keflavik Intl

Tue 2/10

4:55 pm-10:02 am

1 stop23h 07m

$766

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 5/20

6:15 am-8:30 am

2 stops45h 15m

Reykjavik Keflavik Intl

Sun 5/31

11:30 am-10:44 pm

2 stops16h 14m

$881

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 1/22

12:00 pm-3:25 pm

2 stops21h 25m

Reykjavik Keflavik Intl

Mon 1/26

7:35 am-11:37 pm

2 stops22h 02m

$890

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sat 4/18

7:00 am-6:00 am

1 stop18h 00m

Reykjavik Keflavik Intl

Wed 4/22

7:50 pm-2:11 pm

1 stop23h 21m

$904

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 1/16

6:40 pm-2:20 pm

2 stops37h 40m

Reykjavik Keflavik Intl

Fri 1/23

3:25 pm-4:03 pm

2 stops30h 38m

$923

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 1/16

2:50 pm-6:15 am

1 stop33h 25m

Reykjavik Keflavik Intl

Fri 1/23

7:15 pm-11:33 pm

2 stops34h 18m

$928

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 5/29

3:30 pm-12:55 pm

1 stop16h 25m

Reykjavik Keflavik Intl

Sat 6/6

12:25 am-1:30 pm

1 stop18h 05m

$996

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Fri 5/29

1:27 pm-8:30 am

1 stop14h 03m

Reykjavik Keflavik Intl

Sun 6/7

9:15 am-6:25 pm

1 stop14h 10m

$1,048

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Thu 3/12

6:00 am-10:05 am

3 stops47h 05m

$443

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 14 results
1
2

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

Have a flexible travel schedule? Discover the best time to fly to Iceland from St. Louis 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 St. Louis to Iceland
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Iceland

Get insights into the airlines that provide service to Iceland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Iceland. Reviews last updated December 4, 2025.
See what other customers who have flown with Delta, KLM, and United Airlines from St. Louis to Iceland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,011 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
KLM
7.7
Good
1,430 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,066 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,500 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Iceland. 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 from for flights from St. Louis to Iceland?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Iceland. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • How long is the flight from St. Louis to Iceland?

    For as low as $890, United Airlines can have you in Iceland from St. Louis in 21h 25m. The distance from St. Louis to Iceland is about 3191 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

See more FAQs

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Alternative routes for St. Louis to Iceland

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Top 4 airlines flying from St. Louis to Iceland

Discover the top 4 airlines that operate flights from St. Louis to Iceland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$566Average$748FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$595Average$1,088FlexibilityNo cancel feeOn-time69%
DeltaCheapest$636Average$1,036FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$828Average$1,141FlexibilityNo cancel feeOn-time75%

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