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Cheap flights from St. Louis to Iceland from $388

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 9/1. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Iceland

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:15 am - 10:00 am
STL
-
KEF
17h 45m
1 stop
United Airlines Logo
12:00 pm - 4:51 pm
KEF
-
STL
10h 51m
1 stop
$736United Airlines
Wed, Oct 28 - Thu, Nov 5
United Airlines Logo
6:50 pm - 10:00 am
STL
-
KEF
10h 10m
1 stop
United Airlines Logo
12:00 pm - 4:51 pm
KEF
-
STL
10h 51m
1 stop
$736United Airlines
Sun, Oct 25 - Thu, Nov 5
Air Canada Logo
12:10 pm - 7:55 am
STL
-
KEF
14h 45m
1 stop
Air Canada Logo
10:00 am - 8:00 pm
KEF
-
STL
15h 00m
1 stop
$766Air Canada
Tue, Oct 13 - Tue, Oct 20
Air Canada Logo
12:10 pm - 7:55 am
STL
-
KEF
14h 45m
1 stop
Air Canada Logo
10:00 am - 6:41 pm
KEF
-
STL
13h 41m
2 stops
$770Air Canada
Tue, Oct 13 - Tue, Oct 20
Delta Logo
10:00 am - 9:30 am
STL
-
KEF
18h 30m
1 stop
Delta Logo
11:25 am - 8:15 pm
KEF
-
STL
13h 50m
1 stop
$796Delta
Wed, Oct 14 - Wed, Oct 21
Delta Logo
1:01 pm - 9:30 am
STL
-
KEF
15h 29m
1 stop
Delta Logo
11:25 am - 8:15 pm
KEF
-
STL
13h 50m
1 stop
$796Delta
Sun, Oct 11 - Wed, Oct 21
KLM Logo
11:21 am - 7:00 am
STL
-
KEF
14h 39m
1 stop
KLM Logo
9:30 am - 11:16 pm
KEF
-
STL
18h 46m
1 stop
$809KLM
Mon, Sep 21 - Wed, Sep 30
Virgin Atlantic Logo
1:55 pm - 9:30 am
STL
-
KEF
14h 35m
2 stops
Virgin Atlantic Logo
11:25 am - 7:58 pm
KEF
-
STL
13h 33m
2 stops
$811Virgin Atlantic
Mon, Sep 21 - Wed, Sep 30
Multiple Airlines Logo
2:30 pm - 9:30 am
STL
-
KEF
14h 00m
2 stops
Multiple Airlines Logo
11:25 am - 11:42 pm
KEF
-
STL
17h 17m
2 stops
$814Multiple Airlines
Mon, Sep 21 - Wed, Sep 30
KLM Logo
10:02 am - 9:30 am
STL
-
KEF
18h 28m
2 stops
KLM Logo
11:25 am - 11:48 pm
KEF
-
STL
17h 23m
2 stops
$831KLM
Wed, Oct 14 - Tue, Oct 20

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Air Canada flights from St. Louis to Iceland

Our best Air Canada deals on St. Louis to Iceland flight tickets
Air Canada
Oct 13
STL12:10 pmLambert-St Louis
14h 45m
1 stop
KEF7:55 amReykjavik Keflavik Intl
Oct 20
KEF10:00 amReykjavik Keflavik Intl
15h 00m
1 stop
STL8:00 pmLambert-St Louis
$766
Air Canada
Oct 13
STL12:10 pmLambert-St Louis
14h 45m
1 stop
KEF7:55 amReykjavik Keflavik Intl
Oct 20
KEF10:00 amReykjavik Keflavik Intl
13h 41m
2 stops
STL6:41 pmLambert-St Louis
$770
Air Canada
Oct 13
STL2:40 pmLambert-St Louis
12h 15m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Oct 20
KEF10:00 amReykjavik Keflavik Intl
13h 41m
2 stops
STL6:41 pmLambert-St Louis
$778

Delta flights from St. Louis to Iceland

Our best Delta deals on St. Louis to Iceland flight tickets
Delta
Oct 12
STL10:00 amLambert-St Louis
18h 30m
1 stop
KEF9:30 amReykjavik Keflavik Intl
Oct 22
KEF11:25 amReykjavik Keflavik Intl
13h 50m
1 stop
STL8:15 pmLambert-St Louis
$796
Delta
Oct 11
STL2:25 pmLambert-St Louis
14h 05m
2 stops
KEF9:30 amReykjavik Keflavik Intl
Oct 21
KEF11:25 amReykjavik Keflavik Intl
17h 23m
2 stops
STL11:48 pmLambert-St Louis
$801
Delta
Sep 21
STL3:52 pmLambert-St Louis
10h 08m
1 stop
KEF7:00 amReykjavik Keflavik Intl
Sep 30
KEF9:30 amReykjavik Keflavik Intl
10h 42m
1 stop
STL3:12 pmLambert-St Louis
$809

momondo 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, momondo users made 832,500 searches. Data last updated July 29, 2026.
Use the filters below to find and compare flights from St. Louis to Iceland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/28

11:15 am-10:00 am

1 stop17h 45m

Reykjavik Keflavik Intl

Thu 11/5

12:00 pm-4:51 pm

1 stop10h 51m

$736
Quickest round-trip

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 10/25

6:50 pm-10:00 am

1 stop10h 10m

Reykjavik Keflavik Intl

Thu 11/5

12:00 pm-4:51 pm

1 stop10h 51m

$736

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 10/13

12:10 pm-7:55 am

1 stop14h 45m

Reykjavik Keflavik Intl

Tue 10/20

10:00 am-8:00 pm

1 stop15h 00m

$766

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Tue 10/13

12:10 pm-7:55 am

1 stop14h 45m

Reykjavik Keflavik Intl

Tue 10/20

10:00 am-6:41 pm

2 stops13h 41m

$770

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/14

10:00 am-9:30 am

1 stop18h 30m

Reykjavik Keflavik Intl

Wed 10/21

11:25 am-8:15 pm

1 stop13h 50m

$796

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 10/11

1:01 pm-9:30 am

1 stop15h 29m

Reykjavik Keflavik Intl

Wed 10/21

11:25 am-8:15 pm

1 stop13h 50m

$796

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 9/21

11:21 am-7:00 am

1 stop14h 39m

Reykjavik Keflavik Intl

Wed 9/30

9:30 am-11:16 pm

1 stop18h 46m

$809

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 9/21

1:55 pm-9:30 am

2 stops14h 35m

Reykjavik Keflavik Intl

Wed 9/30

11:25 am-7:58 pm

2 stops13h 33m

$811

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 9/21

2:30 pm-9:30 am

2 stops14h 00m

Reykjavik Keflavik Intl

Wed 9/30

11:25 am-11:42 pm

2 stops17h 17m

$814

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/14

10:02 am-9:30 am

2 stops18h 28m

Reykjavik Keflavik Intl

Tue 10/20

11:25 am-11:48 pm

2 stops17h 23m

$831

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Iceland from

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

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

You could potentially save up to 57% on your flight if you consider stops on a St. Louis to Iceland flight.

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

9h 25m

Direct flights

None
The fastest flight from St. Louis to Iceland takes 9h 25m
There are no direct flights from St. Louis to Iceland. There are no popular flight routes from St. Louis to Iceland.
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Frequently asked questions about flying from St. Louis to Iceland

  • 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?

  • 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 CanadaPriceFrom $604Free CancellationRating
7.1
11,402 reviews
Search Air Canada flights
KLMPriceFrom $756Free CancellationRating
7.8
1,550 reviews
Search KLM flights
United AirlinesPriceFrom $783Free CancellationRating
7.4
10,051 reviews
Search United Airlines flights
DeltaPriceFrom $784Free CancellationRating
7.8
8,482 reviews
Search Delta 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.

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