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St. Louis

$536+ Cheap flights from Keflavik Intl (KEF) 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — STL
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Keflavik Intl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.

Find flight deals from Keflavik Intl to St. Louis

One-way flights from Keflavik Intl to St. Louis
Search for one-way flight options from Keflavik Intl to St. Louis. Find affordable one-way fares based on user searches. Data last updated enero 21, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
dom. 7/204:50 pmKEF - STL
1 stop21h 22mMultiple Airlines
Deal found 1/20$536
This Air France deal was found by Cheapflights users on 1/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/238:50 amKEF - STL
1 stop12h 57mAir France
Deal found 1/20$762
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/1912:25 amKEF - STL
1 stop18h 05mLufthansa
Deal found 1/20$1,216
This United Airlines deal was found by Cheapflights users on 1/20. 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. 6/2510:00 amKEF - STL
3 stops34h 21mUnited Airlines
Deal found 1/20$1,235

Find flights from Keflavik Intl to St. Louis within your budget

Customize your flight search to find flights from Keflavik Intl 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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

dom. 7/20

4:50 pm-9:12 am

1 stop21h 22m

$536

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

lun. 6/23

8:50 am-4:47 pm

1 stop12h 57m

$762

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

sáb. 7/19

12:25 am-1:30 pm

1 stop18h 05m

$1,216

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

mié. 6/25

10:00 am-3:21 pm

3 stops34h 21m

$1,235

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Travel insights for flights from Keflavik Intl to St. Louis

Get recent, data-driven insights about flights from Keflavik Intl to St. Louis including ideal travel times, pricing trends, and more.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated enero 21, 2025.
Air France
7.4
Good
1,490 reviews

Crew

8.1

Boarding

7.4

Entertainment

7.0

Food

7.0

Comfort

7.4

Overall

7.4

Reviews

1 / 10

Why bother with the continental breakfast? It's so lack luster that it's not worth anyone's time.

Air France
7.4
Good
1,490 reviews
Air France
7.4
Good
1,490 reviews

Crew

8.1

Boarding

7.4

Entertainment

7.0

Food

7.0

Comfort

7.4

Overall

7.4

Reviews

1 / 10

Why bother with the continental breakfast? It's so lack luster that it's not worth anyone's time.

United Airlines
7.4
Good
8,984 reviews
Air France
7.4
Good
1,490 reviews

Crew

8.1

Boarding

7.4

Entertainment

7.0

Food

7.0

Comfort

7.4

Overall

7.4

Reviews

1 / 10

Why bother with the continental breakfast? It's so lack luster that it's not worth anyone's time.

Lufthansa
6.8
Okay
7,111 reviews
Air France
7.4
Good
1,490 reviews

Crew

8.1

Boarding

7.4

Entertainment

7.0

Food

7.0

Comfort

7.4

Overall

7.4

Reviews

1 / 10

Why bother with the continental breakfast? It's so lack luster that it's not worth anyone's time.

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl 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 Reykjavik Keflavik Intl?

    If you book a flight to St. Louis from Reykjavik Keflavik Intl, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Reykjavik Keflavik Intl to Lambert-St Louis per day from 0 different airlines.

  • What are the cheapest airlines to fly from Reykjavik Keflavik Intl Airport to St. Louis one-way?

    For one-way options, check prices for Air France. According to our data, you can fly for as low as $762. Users have also found prices from $1,216 and $1,235 on Lufthansa and United Airlines, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Keflavik Intl 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.

  • What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to St. Louis (average of $311). Flying from Reykjavik Keflavik Intl Airport to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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