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$401+ Cheap flights from Iceland to St. Louis (STL)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — STL
Jul 30 — Aug 61
Thu 7/30
Thu 8/6
1 adult, Economy
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Cheap 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 30, 2026.

This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/911:00 am
KEF
-
STL
2 stops17h 29m
United Airlines
Sun 8/1612:59 pm
STL
-
KEF
2 stops14h 31m
United Airlines
Deal found 6/25$865
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1511:30 am
KEF
-
STL
1 stop12h 12m
Multiple Airlines
Sun 7/1912:10 pm
STL
-
KEF
1 stop15h 50m
Multiple Airlines
Deal found 6/29$1,157
This Gotogate deal was found by Cheapflights users on 6/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:50 am
KEF
-
STL
2 stops13h 52m
Air Canada
Sun 7/1912:10 pm
STL
-
KEF
1 stop14h 45m
Air Canada
Deal found 6/29$1,160
This Justfly.com deal was found by Cheapflights users on 6/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/139:15 am
KEF
-
STL
2 stops43h 14m
Air Canada
Fri 7/1712:10 pm
STL
-
KEF
1 stop14h 45m
Air Canada
Deal found 6/27$1,172
This Gotogate deal was found by Cheapflights users on 6/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1212:20 am
KEF
-
STL
1 stop18h 05m
Multiple Airlines
Fri 7/1712:10 pm
STL
-
KEF
1 stop14h 45m
Multiple Airlines
Deal found 6/27$1,180
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:05 pm
KEF
-
STL
3 stops30h 37m
Multiple Airlines
Sun 8/162:40 pm
STL
-
KEF
2 stops12h 15m
Multiple Airlines
Deal found 6/25$1,358

Find 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 30, 2026.

Round-trip from

$865
(United Airlines)

One-way from

$401
(Kiwi.com)
From Iceland to Lambert-St Louis
Search Deals
One-way flight from Iceland to Lambert-St Louis
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Iceland to St. Louis 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 June 30, 2026.
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

Cheapest round-trip

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sun 8/9

11:00 am-11:29 pm

2 stops17h 29m

Lambert-St Louis

Sun 8/16

12:59 pm-8:30 am

2 stops14h 31m

$865
Quickest round-trip

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Wed 7/15

9:50 am-6:42 pm

2 stops13h 52m

Lambert-St Louis

Sun 7/19

12:10 pm-7:55 am

1 stop14h 45m

$1,160

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Mon 7/13

9:15 am-3:46 pm

2 stops35h 31m

Lambert-St Louis

Fri 7/17

1:13 pm-7:55 am

2 stops13h 42m

$1,176

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Wed 7/15

9:50 am-11:29 pm

3 stops18h 39m

Lambert-St Louis

Sun 7/19

1:13 pm-7:55 am

2 stops13h 42m

$1,199

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sun 8/9

5:05 pm-6:42 pm

3 stops30h 37m

Lambert-St Louis

Sun 8/16

2:40 pm-7:55 am

2 stops12h 15m

$1,358
Cheapest one-way

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 9/3

9:00 am-5:22 pm

2 stops37h 22m

$401

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sun 8/30

9:00 am-11:46 am

2 stops31h 46m

$530

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sat 10/24

7:50 pm-9:40 am

2 stops42h 50m

$578
Quickest one-way

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sun 8/30

12:45 pm-11:59 pm

1 stop16h 14m

$871

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sat 8/29

12:20 am-1:25 pm

1 stop18h 05m

$962

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Sorted by cheapest first

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
No data available for this route at this time. Please check back soon.

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?

    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.

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

    There are many flights that can get you from Iceland to St. Louis in 13h 52m. Fly via United Airlines or Air Canada to get the fastest option. Airlines will cover a distance of 3191 mi. This flight may include one or multiple stops.

  • 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington

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