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$620+ Cheap flights from Keflavik Intl (KEF) to Missouri

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — STL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Missouri

One-way flights from Keflavik Intl to Missouri
Search for one-way flight options from Keflavik Intl to Missouri. Find affordable one-way fares based on user searches. Data last updated January 29, 2026.

This Finnair deal was found by Cheapflights users on 1/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:10 pm
KEF
-
STL
2 stops35h 32m
Finnair
Deal found 1/27$620
This Finnair deal was found by Cheapflights users on 1/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/25:15 pm
KEF
-
STL
2 stops35h 27m
Finnair
Deal found 1/28$710
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Sun 7/265:00 pm
KEF
-
MCI
2 stops47h 07m
Multiple Airlines
Deal found 1/27$728
This KAYAK deal was found by Cheapflights users on 1/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/268:25 am
KEF
-
MCI
2 stops32h 07m
WestJet
Deal found 1/27$814
This KLM deal was found by Cheapflights users on 1/27. 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.
Fri 5/229:30 am
KEF
-
STL
1 stop10h 01m
KLM
Deal found 1/27$895
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Thu 7/27:45 pm
KEF
-
STL
1 stop27h 49m
Multiple Airlines
Deal found 1/28$911
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2612:45 pm
KEF
-
MCI
1 stop16h 10m
Alaska Airlines
Deal found 1/28$994
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sun 7/2611:30 am
KEF
-
MCI
1 stop14h 02m
United Airlines
Deal found 1/27$1,504
This Air Canada deal was found by Cheapflights users on 1/27. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2610:00 am
KEF
-
MCI
3 stops18h 11m
Air Canada
Deal found 1/27$1,516

Cheapflights Fare Finder

 
Customize your flight search to find flights from Keflavik Intl to Missouri 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 January 29, 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Missouri that are best for you.

Fly from

Keflavik Intl

Fly to

Missouri

Route

Depart

Return

Price

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Fri 5/22

5:10 pm-11:42 pm

2 stops35h 32m

$620

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 7/2

5:15 pm-11:42 pm

2 stops35h 27m

$710

ReykjavikKansas City

KEF - MCI

KEFMCI

Reykjavik Keflavik Intl

Sun 7/26

5:00 pm-11:07 am

2 stops47h 07m

$728

ReykjavikKansas City

KEF - MCI

KEFMCI

Reykjavik Keflavik Intl

Sun 7/26

8:25 am-11:32 am

2 stops32h 07m

$814

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Fri 5/22

9:30 am-2:31 pm

1 stop10h 01m

$895

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 7/2

7:45 pm-6:34 pm

1 stop27h 49m

$911

ReykjavikKansas City

KEF - MCI

KEFMCI

Reykjavik Keflavik Intl

Sun 7/26

12:45 pm-11:55 pm

1 stop16h 10m

$994

ReykjavikKansas City

KEF - MCI

KEFMCI

Reykjavik Keflavik Intl

Sun 7/26

11:30 am-8:32 pm

1 stop14h 02m

$1,504

ReykjavikKansas City

KEF - MCI

KEFMCI

Reykjavik Keflavik Intl

Sun 7/26

10:00 am-11:11 pm

3 stops18h 11m

$1,516

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Best time to book a flight from Keflavik Intl to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Keflavik Intl 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 Reykjavik Keflavik Intl Airport to Missouri
No data available for this route at this time. Please check back soon.

Related info for your journey

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Keflavik Intl to Missouri by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Alternative routes for Keflavik Intl to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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