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Keflavik Intl

$356+ Cheap flights from San Francisco (SFO) 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from San Francisco to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$598
(Kiwi.com)

One-way from

$356
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$923
Provider with most accurate pricing for San Francisco-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Reykjavik Keflavik Intl flights.
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From San Francisco to Reykjavik Keflavik Intl
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One-way flight from San Francisco to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 7% potential increase in price ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from San Francisco to Keflavik Intl

Cheapest flights from San Francisco to Keflavik Intl
Explore the most affordable flight options available from San Francisco to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Mon 3/28:42 am
SFO
-
KEF
1 stop13h 33m
Multiple Airlines
Fri 3/65:00 pm
KEF
-
SFO
1 stop13h 56m
Multiple Airlines
Deal found 1/15$598
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 2/258:42 am
SFO
-
KEF
1 stop13h 33m
Multiple Airlines
Tue 3/105:00 pm
KEF
-
SFO
1 stop24h 37m
Multiple Airlines
Deal found 1/15$600
This Kiwi.com deal was found by Cheapflights users on 1/14. 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.
Fri 2/276:30 am
SFO
-
KEF
1 stop15h 45m
Multiple Airlines
Tue 3/105:00 pm
KEF
-
SFO
1 stop11h 55m
Multiple Airlines
Deal found 1/14$633
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 4/148:00 am
SFO
-
KEF
1 stop15h 05m
Multiple Airlines
Mon 4/204:50 pm
KEF
-
SFO
1 stop13h 39m
Multiple Airlines
Deal found 1/15$634
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 4/218:00 am
SFO
-
KEF
1 stop15h 05m
Multiple Airlines
Mon 4/274:50 pm
KEF
-
SFO
1 stop13h 50m
Multiple Airlines
Deal found 1/14$636
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 4/141:35 pm
SFO
-
KEF
1 stop12h 50m
Multiple Airlines
Wed 4/224:50 pm
KEF
-
SFO
1 stop12h 38m
Multiple Airlines
Deal found 1/15$638
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 4/89:59 am
SFO
-
KEF
1 stop13h 16m
Multiple Airlines
Wed 4/224:50 pm
KEF
-
SFO
1 stop12h 38m
Multiple Airlines
Deal found 1/15$643
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 4/2212:26 pm
SFO
-
KEF
1 stop13h 59m
Multiple Airlines
Tue 4/284:50 pm
KEF
-
SFO
1 stop12h 38m
Multiple Airlines
Deal found 1/14$644
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 4/2111:13 am
SFO
-
KEF
1 stop12h 02m
Multiple Airlines
Wed 4/294:50 pm
KEF
-
SFO
1 stop12h 38m
Multiple Airlines
Deal found 1/14$645
This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Mon 4/136:30 am
SFO
-
KEF
1 stop16h 45m
Multiple Airlines
Wed 4/224:50 pm
KEF
-
SFO
1 stop12h 38m
Multiple Airlines
Deal found 1/15$649
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 4/89:59 am
SFO
-
KEF
1 stop13h 16m
Multiple Airlines
Thu 4/164:50 pm
KEF
-
SFO
1 stop12h 37m
Multiple Airlines
Deal found 1/15$650
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 4/138:00 am
SFO
-
KEF
1 stop15h 05m
Multiple Airlines
Fri 4/174:50 pm
KEF
-
SFO
1 stop13h 39m
Multiple Airlines
Deal found 1/14$653

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco 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 January 15, 2026.
Use the filters below to find and compare flights from San Francisco to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

San Francisco

Fly to

Keflavik Intl

Route

Depart

Return

Price

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sun 4/19

4:45 pm-9:40 am

1 stop33h 55m

Reykjavik Keflavik Intl

Sun 4/26

5:05 pm-2:40 pm

1 stop28h 35m

$673

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 4/18

4:45 pm-10:25 am

2 stops34h 40m

Reykjavik Keflavik Intl

Sun 4/26

10:40 am-2:40 pm

2 stops35h 00m

$726

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 4/15

10:45 pm-4:15 pm

2 stops34h 30m

Reykjavik Keflavik Intl

Sun 4/19

5:05 pm-2:40 pm

1 stop28h 35m

$745

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 3/7

4:40 pm-11:55 pm

1 stop23h 15m

Reykjavik Keflavik Intl

Sun 3/15

11:15 am-3:35 pm

2 stops35h 20m

$750

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 4/4

4:45 pm-9:40 am

1 stop33h 55m

Reykjavik Keflavik Intl

Sun 4/12

10:40 am-2:40 pm

2 stops35h 00m

$770

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 4/8

7:25 am-4:15 pm

2 stops25h 50m

Reykjavik Keflavik Intl

Sat 4/18

6:35 pm-2:40 pm

2 stops27h 05m

$808

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 2/28

4:40 pm-12:15 pm

2 stops35h 35m

Reykjavik Keflavik Intl

Sun 3/8

7:35 am-2:35 pm

2 stops39h 00m

$821

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 2/18

9:25 pm-8:20 pm

2 stops38h 55m

$356

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 4/1

9:05 pm-4:20 pm

3 stops36h 15m

$369

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 1/21

9:25 pm-10:05 am

3 stops52h 40m

$377

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 14 results
1
2

Compare providers for flights from San Francisco to Keflavik Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Keflavik Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Reykjavik Keflavik Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Francisco-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Reykjavik Keflavik Intl Airport 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 San Francisco-Reykjavik Keflavik Intl Airport 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 San Francisco to Keflavik Intl

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

How far ahead should I book a flight from San Francisco to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Keflavik Intl. Price data was last updated on January 9, 2026.

Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Reykjavik Keflavik Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Francisco to Reykjavik Keflavik Intl Airport?

Currently, April is the cheapest month in which you can book a flight from San Francisco to Reykjavik Keflavik Intl Airport (average of $167). Flying from San Francisco to Reykjavik Keflavik Intl Airport in May is currently the most expensive (average of $807). 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.

How much does it cost to fly round-trip from San Francisco to Reykjavik Keflavik Intl Airport?

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated January 15, 2026.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from San Francisco to Reykjavik Keflavik Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,723 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,723 reviews
Alaska Airlines
8.0
Very good
11,723 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,052 reviews
Alaska Airlines
8.0
Very good
11,723 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,164 reviews
Alaska Airlines
8.0
Very good
11,723 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
WestJet
7.2
Good
3,244 reviews
Alaska Airlines
8.0
Very good
11,723 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Icelandair
7.1
Good
596 reviews
Alaska Airlines
8.0
Very good
11,723 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Related info for your journey

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

    Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to Reykjavik Keflavik Intl from San Francisco. Booking flights from San Francisco (SFO) to Reykjavik Keflavik Intl should be relatively easy as there are 0 daily outbound flights to Reykjavik Keflavik Intl from 8 different airlines.

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

    Airlines like Scandinavian Airlines fly from San Francisco to Reykjavik Keflavik Intl Airport in about 33h 55m. The time it takes to get you to your destination can typically vary by up to . San Francisco and Reykjavik Keflavik Intl Airport are separated by a distance of 4190 mi.

  • What are the cheapest airlines flying from San Francisco to Reykjavik Keflavik Intl Airport round-trip?

    According to our current data, WestJet ($537), Delta ($556), and Air Canada ($650) offers the cheapest pricing from San Francisco to Reykjavik Keflavik Intl Airport. WestJet is priced at 42% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from San Francisco to Reykjavik Keflavik Intl Airport one-way?

    One-way options have recently been found by users for as low as $308 on WestJet. Other airlines that offer cheap prices include Air Canada from $501 and Icelandair from $533 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco 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 San Francisco to Reykjavik Keflavik Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from San Francisco to Reykjavik Keflavik Intl Airport (average of $167). Flying from San Francisco to Reykjavik Keflavik Intl Airport in May is currently the most expensive (average of $807). 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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Top 8 airlines flying from San Francisco to Keflavik Intl

Discover the top 8 airlines that operate flights from San Francisco to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$537Average$709FlexibilityNo cancel feeOn-time60%
DeltaCheapest$556Average$798FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$650Average$830FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$655Average$808FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$684Average$923FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$698Average$765FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$827Average$1,075FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$894Average$1,139FlexibilityNo cancel feeOn-time75%

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