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Keflavik Intl

$866+ Cheap flights from Santa Rosa (STS) to Keflavik Intl (KEF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
STS — KEF
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap flight deals from Santa Rosa to Keflavik Intl

Cheapest flights from Santa Rosa to Keflavik Intl
Explore the most affordable flight options available from Santa Rosa to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.

This Finnair deal was found by Cheapflights users on 2/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:17 pm
STS
-
KEF
2 stops45h 13m
Multiple Airlines
Tue 8/255:15 pm
KEF
-
STS
2 stops49h 21m
Multiple Airlines
Deal found 2/20$866
This Finnair deal was found by Cheapflights users on 2/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:18 pm
STS
-
KEF
2 stops59h 57m
Multiple Airlines
Wed 11/1110:00 am
KEF
-
STS
2 stops58h 06m
Multiple Airlines
Deal found 2/20$914
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 6/2311:02 am
STS
-
KEF
1 stop14h 58m
Alaska Airlines
Wed 7/112:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$927
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 6/2311:02 am
STS
-
KEF
1 stop14h 58m
Alaska Airlines
Sun 7/512:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$998
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 6/2311:02 am
STS
-
KEF
1 stop14h 58m
Alaska Airlines
Thu 7/212:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$1,006
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Mon 6/227:34 pm
STS
-
KEF
1 stop30h 26m
Alaska Airlines
Wed 7/112:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$1,014
This Alaska Airlines deal was found by Cheapflights users on 2/18. 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.
Fri 7/2411:02 am
STS
-
KEF
1 stop14h 58m
Alaska Airlines
Sun 8/212:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/18$1,063
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 6/2511:02 am
STS
-
KEF
1 stop14h 58m
Alaska Airlines
Sun 7/512:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$1,068
This Alaska Airlines deal was found by Cheapflights users on 2/18. 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.
Fri 7/2411:02 am
STS
-
KEF
1 stop14h 58m
Alaska Airlines
Fri 7/3112:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/18$1,074
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 6/2511:02 am
STS
-
KEF
1 stop14h 58m
Alaska Airlines
Thu 7/212:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$1,076
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Mon 6/227:34 pm
STS
-
KEF
1 stop30h 26m
Alaska Airlines
Sun 7/512:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$1,084
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Mon 6/227:34 pm
STS
-
KEF
1 stop30h 26m
Alaska Airlines
Thu 7/212:45 pm
KEF
-
STS
1 stop28h 25m
Alaska Airlines
Deal found 2/19$1,092

Find flight deals from Santa Rosa to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Keflavik Intl (KEF). 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 February 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$866
(Finnair)

Popular in

December

Cheapest in

August

Average price

$906
Provider with most accurate pricing for San Francisco-Reykjavik (REK) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Reykjavik (REK) flights.
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From Santa Rosa Sonoma County to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa 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 February 21, 2026.
Use the filters below to find and compare flights from Santa Rosa to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Santa Rosa

Fly to

Keflavik Intl

Route

Depart

Return

Price

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Wed 6/24

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Wed 7/1

12:45 pm-10:10 am

1 stop28h 25m

$927

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Tue 6/23

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Sun 7/5

12:45 pm-10:10 am

1 stop28h 25m

$998

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Wed 6/24

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Thu 7/2

12:45 pm-10:10 am

1 stop28h 25m

$1,006

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Wed 6/24

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Fri 7/3

12:45 pm-10:10 am

1 stop28h 25m

$1,006

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sat 7/25

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Sun 8/2

12:45 pm-10:10 am

1 stop28h 25m

$1,063

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Thu 6/25

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Sun 7/5

12:45 pm-10:10 am

1 stop28h 25m

$1,068

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Fri 6/26

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Sun 7/5

12:45 pm-10:10 am

1 stop28h 25m

$1,068

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Fri 7/24

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Fri 7/31

12:45 pm-10:10 am

1 stop28h 25m

$1,074

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Thu 6/25

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Thu 7/2

12:45 pm-10:10 am

1 stop28h 25m

$1,076

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Fri 6/26

11:02 am-9:00 am

1 stop14h 58m

Reykjavik Keflavik Intl

Fri 7/3

12:45 pm-10:10 am

1 stop28h 25m

$1,076

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 12 results
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Best time to book a flight from Santa Rosa to Keflavik Intl

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

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

Currently, December is the cheapest month in which you can book a flight from Santa Rosa to Reykjavik Keflavik Intl Airport (average of $212). Flying from Santa Rosa to Reykjavik Keflavik Intl Airport in February is currently the most expensive (average of $852). 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.

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa 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 airport do you fly from for flights from Santa Rosa to Reykjavik Keflavik Intl?

    Most people fly from Santa Rosa Sonoma County (STS) if they book a flight from Santa Rosa to Reykjavik Keflavik Intl. On average, Sonoma County has 0 outbound flights to Reykjavik Keflavik Intl per day from 0 airlines. Santa Rosa Sonoma County is conveniently located just 7.2 mi from Santa Rosa’s city center.

  • How long is the flight from Santa Rosa to Reykjavik Keflavik Intl Airport?

    A quick flight from Santa Rosa to Reykjavik Keflavik Intl Airport can take about 14h 58m. Alaska Airlines provides one of the quickest options available for as low as $927. There are 4149 mi between Santa Rosa and Reykjavik Keflavik Intl Airport.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Santa Rosa to Reykjavik Keflavik Intl Airport (average of $212). Flying from Santa Rosa to Reykjavik Keflavik Intl Airport in February is currently the most expensive (average of $852). 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
Keflavik
Hveragerdi

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