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Iceland

$490+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KEF
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap 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 agosto 14, 2025.

Round-trip from

$593
(United Airlines)

One-way from

$490
(Gotogate)

Popular in

March

Cheapest in

January

Average price

$979
From Lambert-St Louis to Iceland
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One-way flight from Lambert-St Louis to Iceland
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Highest demand for flights based on searches. 5% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 agosto 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/13. 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.
mié. 9/104:05 pmSTL - KEF
1 stop11h 10mUnited Airlines
mié. 9/179:30 amKEF - STL
2 stops37h 53mUnited Airlines
Deal found 8/13$593
This Ovago deal was found by Cheapflights users on 8/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/292:15 pmSTL - KEF
2 stops39h 40mBritish Airways
mié. 11/511:50 amKEF - STL
2 stops42h 06mBritish Airways
Deal found 8/13$640
This KLM deal was found by Cheapflights users on 8/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/1311:28 amSTL - KEF
1 stop14h 32mKLM
mié. 8/209:30 amKEF - STL
1 stop18h 53mKLM
Deal found 8/12$651
This Mytrip deal was found by Cheapflights users on 8/13. 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.
jue. 8/141:30 pmSTL - KEF
2 stops37h 45mAir Canada
jue. 8/219:30 amKEF - STL
2 stops35h 14mAir Canada
Deal found 8/13$680
This Ovago deal was found by Cheapflights users on 8/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/302:15 pmSTL - KEF
2 stops39h 40mBritish Airways
mié. 11/511:50 amKEF - STL
2 stops42h 06mBritish Airways
Deal found 8/13$690
This Orbitz deal was found by Cheapflights users on 8/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/179:09 amSTL - KEF
2 stops42h 06mAir Canada
dom. 8/249:50 amKEF - STL
1 stop10h 31mAir Canada
Deal found 8/13$692
This Orbitz deal was found by Cheapflights users on 8/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/131:20 pmSTL - KEF
2 stops37h 55mAir Canada
mié. 8/209:30 amKEF - STL
2 stops15h 15mAir Canada
Deal found 8/12$693
This United Airlines deal was found by Cheapflights users on 8/13. 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.
dom. 8/178:00 amSTL - KEF
1 stop19h 30mUnited Airlines
dom. 8/249:50 amKEF - STL
1 stop14h 55mUnited Airlines
Deal found 8/13$697

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 agosto 14, 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

mié. 9/10

4:05 pm-8:15 am

1 stop11h 10m

Reykjavik Keflavik Intl

mié. 9/17

9:30 am-6:23 pm

2 stops37h 53m

$593

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

mié. 10/29

2:15 pm-10:55 am

2 stops39h 40m

Reykjavik Keflavik Intl

mié. 11/5

11:50 am-11:56 pm

2 stops42h 06m

$640

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

mié. 10/29

4:12 pm-10:55 am

2 stops37h 43m

Reykjavik Keflavik Intl

mar. 11/4

11:50 am-8:23 pm

2 stops38h 33m

$640

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

jue. 10/30

2:15 pm-10:55 am

2 stops39h 40m

Reykjavik Keflavik Intl

mié. 11/5

11:50 am-11:56 pm

2 stops42h 06m

$690

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

jue. 9/25

1:30 pm-8:10 am

1 stop13h 40m

Reykjavik Keflavik Intl

dom. 10/5

9:30 am-2:27 pm

2 stops33h 57m

$729

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

dom. 9/14

9:17 am-8:15 am

2 stops41h 58m

Reykjavik Keflavik Intl

sáb. 9/27

12:25 am-1:30 pm

1 stop18h 05m

$756

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

mar. 10/7

12:25 pm-11:35 pm

2 stops30h 10m

Reykjavik Keflavik Intl

dom. 10/12

12:25 am-3:44 pm

2 stops44h 19m

$773

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

dom. 9/14

12:35 pm-8:30 am

1 stop14h 55m

Reykjavik Keflavik Intl

sáb. 9/27

12:25 am-1:30 pm

1 stop18h 05m

$780

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

mié. 8/27

8:10 am-8:10 am

2 stops19h 00m

$490

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

vie. 9/5

11:30 am-8:30 am

1 stop16h 00m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 13 results
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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

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to Iceland (average of $328). Flying from St. Louis to Iceland in June is currently the most expensive (average of $655). 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.

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 agosto 14, 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
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

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!
KLM
7.8
Good
1,381 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

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!
Air Canada
7.1
Good
9,949 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

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

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.

  • 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.

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

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Iceland (average of $328). Flying from St. Louis to Iceland in June is currently the most expensive (average of $655). 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

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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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$566Average$748FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$586Average$1,106FlexibilityNo cancel feeOn-time69%
DeltaCheapest$636Average$1,036FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$828Average$1,168FlexibilityNo cancel feeOn-time75%

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