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Keflavik Intl

$688+ Cheap flights from Santa Rosa (STS) 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
STS — KEF
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
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 March 24, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Fri 7/1712:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$771
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:09 pm
STS
-
KEF
1 stop29h 51m
Alaska Airlines
Fri 7/1712:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$777
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Mon 7/2012:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$841
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:09 pm
STS
-
KEF
1 stop29h 51m
Alaska Airlines
Mon 7/2012:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$848
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Wed 7/1512:45 pm
KEF
-
STS
1 stop17h 06m
Alaska Airlines
Deal found 3/20$867
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:09 pm
STS
-
KEF
1 stop29h 51m
Alaska Airlines
Wed 7/1512:45 pm
KEF
-
STS
1 stop17h 06m
Alaska Airlines
Deal found 3/20$874
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Thu 7/1612:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$875
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:09 pm
STS
-
KEF
1 stop29h 51m
Alaska Airlines
Thu 7/1612:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$881
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:09 pm
STS
-
KEF
1 stop29h 51m
Alaska Airlines
Mon 7/2012:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$919
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/51:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Fri 7/1712:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/20$924
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Sat 7/1812:45 pm
KEF
-
STS
1 stop17h 06m
Alaska Airlines
Deal found 3/20$937
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:09 pm
STS
-
KEF
1 stop29h 51m
Alaska Airlines
Sat 7/1812:45 pm
KEF
-
STS
1 stop17h 06m
Alaska Airlines
Deal found 3/20$944

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 March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$771
(Alaska Airlines)

One-way from

$688
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$963
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
One-way flight from Santa Rosa Sonoma County to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 24, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Thu 7/9

8:09 pm-9:00 am

1 stop29h 51m

Reykjavik Keflavik Intl

Sun 7/19

12:45 pm-12:17 pm

1 stop30h 32m

$919

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Wed 7/8

8:09 pm-9:00 am

1 stop29h 51m

Reykjavik Keflavik Intl

Wed 7/15

12:45 pm-10:51 pm

1 stop17h 06m

$944

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sun 7/5

1:09 pm-9:00 am

1 stop12h 51m

Reykjavik Keflavik Intl

Wed 7/15

12:45 pm-10:51 pm

1 stop17h 06m

$1,019
Quickest round-trip

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sun 5/3

1:13 pm-9:25 am

1 stop13h 12m

Reykjavik Keflavik Intl

Sun 5/10

4:50 pm-10:57 pm

1 stop13h 07m

$1,141

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sun 5/3

7:45 am-9:25 am

2 stops18h 40m

Reykjavik Keflavik Intl

Sun 5/10

4:50 pm-9:09 am

2 stops23h 19m

$1,156

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sun 6/21

7:00 am-9:25 am

2 stops19h 25m

Reykjavik Keflavik Intl

Mon 7/6

10:40 am-12:17 pm

1 stop32h 37m

$1,274

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Fri 5/15

1:09 pm-7:50 am

2 stops35h 41m

Reykjavik Keflavik Intl

Fri 5/22

8:35 am-9:22 pm

2 stops19h 47m

$1,345

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Tue 5/12

1:13 pm-4:30 pm

2 stops20h 17m

Reykjavik Keflavik Intl

Tue 5/26

8:35 am-7:46 pm

2 stops18h 11m

$1,363

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Tue 8/18

11:47 am-9:40 am

2 stops38h 53m

Reykjavik Keflavik Intl

Sat 8/29

10:20 am-6:07 pm

2 stops38h 47m

$2,185
Cheapest one-way

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Thu 6/18

6:26 am-7:40 am

2 stops42h 14m

$700

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 29h 41m. Alaska Airlines provides one of the quickest options available for as low as $848. 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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