HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Keflavik Intl

$607+ 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
STS — KEF
Apr 3 — Apr 101
Fri 4/3
Fri 4/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Santa Rosa to Keflavik Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 4, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 6/31:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Sun 6/712:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/3$815
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 6/28:26 pm
STS
-
KEF
1 stop29h 34m
Alaska Airlines
Sun 6/712:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/3$822
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 6/18:26 pm
STS
-
KEF
1 stop29h 34m
Alaska Airlines
Sun 6/712:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/3$885
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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.
Sat 6/208:19 pm
STS
-
KEF
1 stop29h 41m
Alaska Airlines
Fri 6/2612:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/3$935
This Alaska Airlines deal was found by Cheapflights users on 3/4. 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.
Sat 7/251:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Tue 7/2812:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/4$992
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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.
Sat 6/208:19 pm
STS
-
KEF
1 stop29h 41m
Alaska Airlines
Sat 6/2712:45 pm
KEF
-
STS
1 stop17h 06m
Alaska Airlines
Deal found 3/3$997
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 6/198:09 pm
STS
-
KEF
1 stop29h 51m
Alaska Airlines
Fri 6/2612:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/3$1,006
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 6/48:26 pm
STS
-
KEF
1 stop29h 34m
Alaska Airlines
Sun 6/712:45 pm
KEF
-
STS
1 stop30h 32m
Alaska Airlines
Deal found 3/3$1,009
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 8/276:47 pm
STS
-
KEF
2 stops12h 13m
Alaska Airlines
Sat 8/2910:40 am
KEF
-
STS
1 stop15h 30m
Alaska Airlines
Deal found 3/3$1,057
This Finnair deal was found by Cheapflights users on 3/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:09 pm
STS
-
KEF
2 stops35h 41m
Finnair
Wed 8/198:35 am
KEF
-
STS
2 stops22h 10m
Finnair
Deal found 3/1$1,059
This Alaska Airlines deal was found by Cheapflights users on 3/4. 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.
Sat 7/251:09 pm
STS
-
KEF
1 stop12h 51m
Alaska Airlines
Wed 7/2912:45 pm
KEF
-
STS
1 stop17h 06m
Alaska Airlines
Deal found 3/4$1,065

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 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$815
(Alaska Airlines)

One-way from

$607
(Alaska Airlines)

Popular in

December

Cheapest in

August

Average price

$1,017
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.
Search Deals
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. 6% potential increase in price ($74 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 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 4, 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

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sat 6/20

8:19 pm-9:00 am

1 stop29h 41m

Reykjavik Keflavik Intl

Fri 6/26

12:45 pm-12:17 pm

1 stop30h 32m

$935

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Fri 6/19

8:09 pm-9:00 am

1 stop29h 51m

Reykjavik Keflavik Intl

Sat 6/27

12:45 pm-10:51 pm

1 stop17h 06m

$1,068

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Fri 6/19

8:09 pm-9:00 am

1 stop29h 51m

Reykjavik Keflavik Intl

Sun 6/28

12:45 pm-12:17 pm

1 stop30h 32m

$1,077

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Tue 4/28

1:13 pm-4:30 pm

2 stops20h 17m

Reykjavik Keflavik Intl

Tue 5/5

5:15 pm-11:59 pm

2 stops37h 44m

$1,130

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Tue 4/28

1:13 pm-4:30 pm

2 stops20h 17m

Reykjavik Keflavik Intl

Wed 5/6

5:15 pm-11:01 pm

2 stops36h 46m

$1,160

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Tue 4/28

1:13 pm-7:50 am

2 stops35h 37m

Reykjavik Keflavik Intl

Thu 5/7

8:35 am-11:01 pm

2 stops21h 26m

$1,160

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Tue 4/28

1:13 pm-7:50 am

2 stops35h 37m

Reykjavik Keflavik Intl

Fri 5/8

8:35 am-11:01 pm

2 stops21h 26m

$1,160

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Thu 6/18

8:09 pm-9:00 am

1 stop29h 51m

Reykjavik Keflavik Intl

Fri 6/26

12:45 pm-12:17 pm

1 stop30h 32m

$1,170

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sat 7/25

1:09 pm-9:00 am

1 stop12h 51m

Reykjavik Keflavik Intl

Mon 7/27

12:45 pm-10:51 pm

1 stop17h 06m

$1,219

Santa RosaReykjavik

STS - KEF

STSKEF

Santa Rosa Sonoma County

Sat 6/27

1:09 pm-9:00 am

1 stop12h 51m

$607

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/1

Showing 1-10 of 18 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 20h 17m. Alaska Airlines provides one of the quickest options available for as low as $1,130. There are 4149 mi between Santa Rosa and Reykjavik Keflavik Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.