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Keflavik Intl

$300+ Cheap flights from Missouri to Keflavik Intl (KEF)

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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KEF
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Missouri to Keflavik Intl

Keep the following information in mind while searching for Missouri to Keflavik Intl flight deals. Data was last updated May 1, 2025.

Round-trip from

$582
(Justfly.com)

One-way from

$300
(Kiwi.com)
From Missouri to Reykjavik Keflavik Intl
Search Deals
One-way flight from Missouri to Reykjavik Keflavik Intl
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Find flight deals from Missouri to Keflavik Intl

Cheapest flights from Missouri to Keflavik Intl
Explore the most affordable flight options available from Missouri to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Justfly.com deal was found by Cheapflights users on 4/30. 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.
Tue 8/126:27 pmMCI - KEF
2 stops32h 43mAir Canada
Wed 8/209:30 amKEF - MCI
2 stops33h 50mAir Canada
Deal found 4/30$582
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Mon 9/86:29 pmMCI - KEF
1 stop9h 01mUnited Airlines
Tue 9/1610:00 amKEF - MCI
2 stops33h 48mUnited Airlines
Deal found 4/30$663
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/14:00 pmSTL - KEF
2 stops35h 35mAir Canada
Tue 9/3010:00 amKEF - STL
2 stops34h 38mAir Canada
Deal found 4/30$665
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Mon 8/258:10 amSTL - KEF
1 stop19h 20mUnited Airlines
Thu 9/410:00 amKEF - STL
2 stops29h 40mUnited Airlines
Deal found 4/30$666
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/254:18 pmSTL - KEF
2 stops34h 42mFinnair
Thu 9/48:45 amKEF - STL
2 stops38h 36mFinnair
Deal found 4/30$667
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/112:19 pmMCI - KEF
1 stop13h 41mDelta
Tue 9/3011:25 amKEF - MCI
1 stop12h 13mDelta
Deal found 4/30$687
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:45 amSTL - KEF
1 stop18h 35mDelta
Sun 9/288:45 amKEF - STL
1 stop16h 50mDelta
Deal found 4/30$697
This United deal was found by Cheapflights users on 4/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/305:00 amSTL - KEF
2 stops22h 10mMultiple Airlines
Thu 8/79:30 amKEF - STL
2 stops31h 57mMultiple Airlines
Deal found 4/30$699
This Travelocity deal was found by Cheapflights users on 4/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1512:39 pmMCI - KEF
2 stops40h 01mBritish Airways
Wed 10/2210:55 amKEF - MCI
2 stops38h 41mBritish Airways
Deal found 4/30$704
This Expedia deal was found by Cheapflights users on 5/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:26 amSTL - KEF
2 stops44h 14mBritish Airways
Wed 10/2911:45 amKEF - STL
2 stops37h 38mBritish Airways
Deal found 5/1$737
This KLM deal was found by Cheapflights users on 4/30. 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.
Sun 9/1410:45 amSTL - KEF
1 stop14h 35mKLM
Sun 9/288:45 amKEF - STL
1 stop13h 06mKLM
Deal found 4/30$742
This KLM deal was found by Cheapflights users on 4/30. 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.
Tue 7/810:29 amMCI - KEF
1 stop14h 51mMultiple Airlines
Fri 7/189:30 amKEF - MCI
1 stop18h 39mMultiple Airlines
Deal found 4/30$744

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to Keflavik Intl 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 May 1, 2025.
Use the filters below to find and compare flights from Missouri to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Missouri

Fly to

Keflavik Intl

Route

Depart

Return

Price

Kansas CityReykjavik

MCI - KEF

MCIKEF

Kansas City

Tue 8/12

6:27 pm-8:10 am

2 stops32h 43m

Reykjavik Keflavik Intl

Wed 8/20

9:30 am-2:20 pm

2 stops33h 50m

$582

Kansas CityReykjavik

MCI - KEF

MCIKEF

Kansas City

Mon 9/8

6:29 pm-8:30 am

1 stop9h 01m

Reykjavik Keflavik Intl

Tue 9/16

10:00 am-2:48 pm

2 stops33h 48m

$663

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 9/1

4:00 pm-8:35 am

2 stops35h 35m

Reykjavik Keflavik Intl

Tue 9/30

10:00 am-3:38 pm

2 stops34h 38m

$665

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 8/25

8:10 am-8:30 am

1 stop19h 20m

Reykjavik Keflavik Intl

Thu 9/4

10:00 am-10:40 am

2 stops29h 40m

$666

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Mon 8/25

4:18 pm-8:00 am

2 stops34h 42m

Reykjavik Keflavik Intl

Thu 9/4

8:45 am-6:21 pm

2 stops38h 36m

$667

Kansas CityReykjavik

MCI - KEF

MCIKEF

Kansas City

Fri 8/1

12:19 pm-7:00 am

1 stop13h 41m

Reykjavik Keflavik Intl

Tue 9/30

11:25 am-6:38 pm

1 stop12h 13m

$687

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Sun 9/14

6:45 am-6:20 am

1 stop18h 35m

Reykjavik Keflavik Intl

Sun 9/28

8:45 am-8:35 pm

1 stop16h 50m

$697

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 7/30

5:00 am-8:10 am

2 stops22h 10m

Reykjavik Keflavik Intl

Thu 8/7

9:30 am-12:27 pm

2 stops31h 57m

$699

Kansas CityReykjavik

MCI - KEF

MCIKEF

Kansas City

Wed 10/15

12:39 pm-9:40 am

2 stops40h 01m

Reykjavik Keflavik Intl

Wed 10/22

10:55 am-8:36 pm

2 stops38h 41m

$704

St. LouisReykjavik

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/22

8:26 am-9:40 am

2 stops44h 14m

Reykjavik Keflavik Intl

Wed 10/29

11:45 am-8:23 pm

2 stops37h 38m

$737

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 34 results
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Best time to book a flight from Missouri to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Missouri 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 Missouri to Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from Missouri to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Missouri to Reykjavik Keflavik Intl Airport (average of $328). Flying from Missouri to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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.

What is the cheapest time of day to fly from MO to KEF?

Find hourly flight availability from Missouri to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Reykjavik Keflavik Intl Airport as you normally would.

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, 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 51.8 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 Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated May 1, 2025.
Read through reviews of airlines operating flights from Missouri to Reykjavik, such as Alaska Airlines, Delta and KLM. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
KLM
7.8
Good
1,334 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Finnair
7.6
Good
1,275 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    The cheapest airlines for a one-way flight from Missouri to Reykjavik Keflavik Intl Airport are Air Canada ($470), Delta ($475), and United Airlines ($475).

  • What are the most popular routes from Missouri to Reykjavik Keflavik Intl Airport?

    The most popular flight routes from Missouri to Reykjavik Keflavik Intl Airport are Kansas City - Reykjavik Keflavik Intl, Lambert-St Louis - Reykjavik Keflavik Intl and Springfield-Branson - Reykjavik Keflavik Intl.

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

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

  • How can I find direct flights from Missouri to Keflavik Intl?

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

  • Can I find deals for business class flights from Missouri to Keflavik Intl?

    Yes. Cheapflights offers flight deals from Missouri to Keflavik Intl 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 Missouri to Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Missouri to Reykjavik Keflavik Intl Airport (average of $328). Flying from Missouri to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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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Keflavik

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Alternative routes for Missouri to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Missouri to Keflavik Intl

Discover the top 4 airlines that operate flights from Missouri to Keflavik Intl. 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$370Average$1,033FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$566Average$739FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$626Average$1,138FlexibilityNo cancel feeOn-time69%
DeltaCheapest$650Average$978FlexibilityNo cancel feeOn-timeN/A

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