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$539+ Cheap flights from Keflavik Intl (KEF) to San Francisco (SFO)

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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — SFO
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheap flight deals from Keflavik Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to San Francisco (SFO). 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 October 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$794
(Kiwi.com)

One-way from

$566
(Kiwi.com)

Popular in

February

Cheapest in

November

Average price

$748
Provider with most accurate pricing for Reykjavik Keflavik Intl-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-San Francisco flights.
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From Reykjavik Keflavik Intl to San Francisco
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One-way flight from Reykjavik Keflavik Intl to San Francisco
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Highest demand for flights based on searches. 2% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Keflavik Intl to San Francisco

Cheapest flights from Keflavik Intl to San Francisco
Explore the most affordable flight options available from Keflavik Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Mon 11/244:50 pmKEF - SFO
1 stop14h 52mMultiple Airlines
Tue 12/98:00 amSFO - KEF
1 stop14h 15mMultiple Airlines
Deal found 10/16$539
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Tue 11/45:00 pmKEF - SFO
2 stops25h 44mMultiple Airlines
Sun 11/168:25 amSFO - KEF
1 stop13h 50mMultiple Airlines
Deal found 10/15$855
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Wed 10/294:55 pmKEF - SFO
1 stop12h 32mMultiple Airlines
Wed 11/58:02 amSFO - KEF
1 stop14h 03mMultiple Airlines
Deal found 10/15$920
This Scandinavian Airlines deal was found by Cheapflights users on 10/16. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/247:50 amKEF - SFO
2 stops22h 54mScandinavian Airlines
Tue 12/93:35 pmSFO - KEF
2 stops24h 20mScandinavian Airlines
Deal found 10/16$1,015
This lastminute.com deal was found by Cheapflights users on 10/15. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2911:25 amKEF - SFO
1 stop35h 10mScandinavian Airlines
Sat 12/64:40 pmSFO - KEF
2 stops35h 35mScandinavian Airlines
Deal found 10/15$1,035

Cheapflights Fare Finder

 
Customize your flight search to find flights from Keflavik Intl to San Francisco 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 October 16, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to San Francisco that are best for you.

Fly from

Keflavik Intl

Fly to

San Francisco

Route

Depart

Return

Price

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 11/24

4:50 pm-11:42 pm

1 stop14h 52m

San Francisco

Tue 12/9

8:00 am-6:15 am

1 stop14h 15m

$539

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 11/4

5:00 pm-10:44 am

2 stops25h 44m

San Francisco

Sun 11/16

8:25 am-6:15 am

1 stop13h 50m

$855

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

5:00 pm-11:59 pm

1 stop14h 59m

San Francisco

Tue 1/20

7:00 am-6:10 am

1 stop15h 10m

$900

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Wed 10/29

5:00 pm-10:37 am

1 stop24h 37m

San Francisco

Wed 11/5

4:35 pm-7:40 pm

2 stops43h 05m

$956

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

11:50 am-3:00 pm

1 stop35h 10m

San Francisco

Tue 1/20

11:15 am-10:45 am

2 stops39h 30m

$986

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 11/24

7:50 am-10:44 pm

2 stops22h 54m

San Francisco

Tue 12/9

3:35 pm-11:55 pm

2 stops24h 20m

$1,015

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Wed 12/24

6:05 pm-8:30 pm

3 stops58h 25m

$566

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 12/25

12:30 pm-2:45 pm

3 stops58h 15m

$600

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Sat 12/27

7:45 pm-2:35 pm

3 stops50h 50m

$601

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 12/23

4:55 pm-12:24 am

1 stop15h 29m

$602

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 13 results
1
2
  • Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Reykjavik Keflavik Intl Airport-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Reykjavik Keflavik Intl Airport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Reykjavik Keflavik Intl Airport-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Keflavik Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco 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.

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to San Francisco. 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 into for flights to San Francisco from Reykjavik Keflavik Intl?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Reykjavik Keflavik Intl. On average, San Francisco has 0 inbound flights from Reykjavik Keflavik Intl per day from 0 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from Reykjavik Keflavik Intl Airport to San Francisco?

    Departing from Reykjavik Keflavik Intl Airport to San Francisco will take you 14h 59m. The distance between Reykjavik Keflavik Intl Airport and San Francisco is about 4190 mi.

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

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

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

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

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

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

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Santa Cruz
Livermore
South San Francisco
Turlock
Antioch
Watsonville
Santa Clara
Manteca
Sunnyvale
Vacaville
Vallejo
Hollister
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