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Keflavik Intl

$298+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap 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 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/28. 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 4/204:45 pm
SFO
-
KEF
1 stop16h 30m
Scandinavian Airlines
Mon 4/275:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/28$641
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
Sat 4/254:45 pm
SFO
-
KEF
1 stop33h 55m
Scandinavian Airlines
Thu 4/305:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/26$642
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
Thu 4/234:45 pm
SFO
-
KEF
1 stop16h 30m
Scandinavian Airlines
Thu 4/305:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/26$650
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 4/214:45 pm
SFO
-
KEF
1 stop33h 55m
Scandinavian Airlines
Sun 5/35:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/26$656
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:45 pm
SFO
-
KEF
2 stops18h 00m
Scandinavian Airlines
Sun 4/265:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/26$657
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:45 pm
SFO
-
KEF
1 stop16h 30m
Scandinavian Airlines
Sun 4/265:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/26$660
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:45 pm
SFO
-
KEF
1 stop16h 30m
Scandinavian Airlines
Sun 4/265:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/28$661
This lol.travel deal was found by Cheapflights users on 1/27. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:40 pm
SFO
-
KEF
1 stop16h 10m
Scandinavian Airlines
Wed 4/85:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/27$671
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/264:45 pm
SFO
-
KEF
2 stops34h 40m
Scandinavian Airlines
Wed 5/65:05 pm
KEF
-
SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 1/26$672

Find 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 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$641
(Kiwi.com)

One-way from

$298
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$923
Provider with most accurate pricing for San Francisco-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Reykjavik Keflavik Intl flights.
Search Deals
From San Francisco to Reykjavik Keflavik Intl
Search Deals
One-way flight from San Francisco 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. 1% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 28, 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

Wed 4/15

10:55 pm-4:15 pm

2 stops34h 20m

Reykjavik Keflavik Intl

Sun 4/19

10:40 am-2:40 pm

2 stops35h 00m

$749

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 5/9

7:00 am-4:15 pm

2 stops26h 15m

Reykjavik Keflavik Intl

Wed 5/13

11:15 am-2:40 pm

2 stops34h 25m

$805

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 4/4

4:03 pm-11:50 pm

2 stops24h 47m

Reykjavik Keflavik Intl

Fri 4/10

7:55 am-2:40 pm

2 stops37h 45m

$818

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 4/4

2:30 pm-11:50 pm

2 stops26h 20m

Reykjavik Keflavik Intl

Sun 4/12

10:40 am-2:40 pm

2 stops35h 00m

$819

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 4/11

7:25 am-4:15 pm

2 stops25h 50m

Reykjavik Keflavik Intl

Sat 4/18

5:10 pm-2:40 pm

1 stop28h 30m

$846

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 5/9

7:00 am-4:15 pm

2 stops26h 15m

Reykjavik Keflavik Intl

Fri 5/15

7:40 am-8:19 pm

2 stops19h 39m

$850

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 4/1

7:00 am-10:15 am

2 stops20h 15m

Reykjavik Keflavik Intl

Wed 4/8

11:15 am-2:40 pm

2 stops34h 25m

$873

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Mon 5/11

4:45 pm-4:15 pm

1 stop16h 30m

Reykjavik Keflavik Intl

Thu 5/14

5:35 pm-2:40 pm

1 stop28h 05m

$892

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 4/22

7:25 am-9:30 am

1 stop19h 05m

Reykjavik Keflavik Intl

Tue 5/5

11:25 am-6:59 pm

1 stop14h 34m

$894

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 5/12

8:55 am-7:40 am

2 stops15h 45m

Reykjavik Keflavik Intl

Tue 5/26

9:30 am-11:52 pm

2 stops21h 22m

$909

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 19 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 Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 23, 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.

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 28, 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
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
11,799 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
8,123 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
9,208 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
3,251 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
603 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

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 34h 20m. 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 43% 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 $300 on WestJet. Other airlines that offer cheap prices include Icelandair from $488 and Air Canada from $501 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 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$537Average$714FlexibilityNo cancel feeOn-time60%
DeltaCheapest$556Average$844FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$650Average$830FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$655Average$807FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$684Average$925FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$698Average$803FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$840Average$1,072FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$894Average$1,139FlexibilityNo cancel feeOn-time75%

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