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Cheap flights from Iceland to St. Louis from $616

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Iceland to St. Louis departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Iceland to St. Louis

Recent round-trip flight deals from Iceland to St. Louis

Enter your travel dates to find the best prices.
Multiple Airlines Logo
KEF  Reykjavik Keflavik Intl-STL Lambert-St Louis
3191 mimulti-stop
Multiple Airlines Logo
STL  Lambert-St Louis-KEF Reykjavik Keflavik Intl
3191 mimulti-stop
Multiple Airlines
Multiple Airlines Logo
RKV  Reykjavik Domestic-STL Lambert-St Louis
3211 mimulti-stop
Multiple Airlines Logo
STL  Lambert-St Louis-RKV Reykjavik Domestic
3211 mimulti-stop
Multiple Airlines

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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, momondo users made 832,500 searches. Data last updated August 14, 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 one-way
Quickest one-way

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Wed 9/23

5:00 pm-9:35 am

3 stops21h 35m

$616

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Wed 9/23

5:00 pm-9:35 am

3 stops21h 35m

$628

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Wed 9/23

7:45 pm-1:10 pm

2 stops46h 25m

$635

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Wed 9/23

7:45 pm-1:10 pm

2 stops46h 25m

$636

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Wed 9/23

5:00 pm-5:54 pm

3 stops29h 54m

$651

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Wed 9/23

5:00 pm-5:54 pm

3 stops29h 54m

$660

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Sat 9/26

7:50 pm-1:10 pm

3 stops46h 20m

$661

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Wed 9/23

5:00 pm-5:54 pm

2 stops29h 54m

$711

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Sun 8/30

12:45 pm-2:06 pm

1 stop30h 21m

$741

ReykjavikSt. Louis

KEF Reykjavik Keflavik Intl - STL Lambert-St Louis

KEFSTL

Reykjavik Keflavik Intl

Sat 9/26

7:50 pm-4:34 pm

2 stops25h 44m

$749

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Iceland to St. Louis

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

Can stopping save me money on Iceland to St. Louis flights?

You could potentially save up to 77% on your flight if you consider stops on a Iceland to St. Louis flight.

Cheap Iceland to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Iceland to St. Louis

Fastest flight time

10h 06m

Direct flights

None
The fastest flight from Iceland to St. Louis takes 10h 06m
There are no direct flights from Iceland to St. Louis. There are no popular flight routes from Iceland to St. Louis.
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Frequently asked questions about flying from Iceland to St. Louis

  • When did momondo last update prices for flights from Iceland to Lambert-St Louis Airport?

    Prices for flights from Iceland to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Iceland to Lambert-St Louis Airport?

    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 Iceland to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
St. Peters
Maryland Heights
Collinsville
Florissant
Alton
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Iceland to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Iceland to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Iceland to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Iceland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Iceland to St. Louis?

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 Iceland to St. Louis.

I’m not ready to book a flight from Iceland to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Iceland 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.

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