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Keflavik Intl

$325+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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The best prices from San Francisco to Reykjavik Keflavik Intl are usually found in February or January, booked 20 days in advance, depart on a Monday or Tuesday and return on a Tuesday

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 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$778
(Trip.com)

One-way from

$325
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$908
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. 6% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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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 30, 2025.

This Ovago deal was found by Cheapflights users on 1/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/184:22 pmSFO - KEF
2 stops34h 23mBritish Airways
Thu 2/2711:40 amKEF - SFO
1 stop35h 20mBritish Airways
Deal found 1/29$772
This Trip.com deal was found by Cheapflights users on 1/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/247:30 amSFO - KEF
1 stop17h 45mWestJet
Tue 9/29:35 amKEF - SFO
2 stops35h 22mWestJet
Deal found 1/29$777
This oojo deal was found by Cheapflights users on 1/29. 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 3/85:30 pmSFO - KEF
1 stop33h 10mScandinavian Airlines
Tue 3/1811:30 amKEF - SFO
1 stop36h 10mScandinavian Airlines
Deal found 1/29$783
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1611:00 pmSFO - KEF
1 stop26h 35mUnited Airlines
Fri 9/512:00 pmKEF - SFO
1 stop13h 43mUnited Airlines
Deal found 1/28$789
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 3/46:00 amSFO - KEF
1 stop16h 05mMultiple Airlines
Thu 3/134:55 pmKEF - SFO
1 stop14h 48mMultiple Airlines
Deal found 1/29$799
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/222:40 pmSFO - KEF
1 stop25h 55mLufthansa
Sun 4/2712:25 amKEF - SFO
1 stop19h 15mLufthansa
Deal found 1/28$803
This CrystalTravel deal was found by Cheapflights users on 1/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2910:40 amSFO - KEF
1 stop15h 15mIcelandair
Tue 5/68:10 pmKEF - SFO
1 stop21h 22mIcelandair
Deal found 1/29$832
This Air France deal was found by Cheapflights users on 1/29. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/111:55 amSFO - KEF
1 stop14h 35mAir France
Fri 4/1111:25 amKEF - SFO
1 stop18h 55mAir France
Deal found 1/29$919
This Delta deal was found by Cheapflights users on 1/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1211:30 amSFO - KEF
1 stop15h 00mDelta
Thu 10/2311:25 amKEF - SFO
1 stop18h 55mDelta
Deal found 1/29$921
This Air Canada deal was found by Cheapflights users on 1/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1411:00 pmSFO - KEF
2 stops26h 35mAir Canada
Sun 9/710:00 amKEF - SFO
1 stop32h 11mAir Canada
Deal found 1/30$933

Find flights from San Francisco to Keflavik Intl within your budget

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 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 2/18

4:22 pm-10:45 am

2 stops34h 23m

Reykjavik Keflavik Intl

Thu 2/27

11:40 am-3:00 pm

1 stop35h 20m

$772

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sun 6/22

7:30 am-8:15 am

1 stop17h 45m

Reykjavik Keflavik Intl

Thu 7/3

9:35 am-5:15 pm

1 stop14h 40m

$778

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 3/8

5:30 pm-10:40 am

1 stop33h 10m

Reykjavik Keflavik Intl

Tue 3/18

11:30 am-4:40 pm

1 stop36h 10m

$783

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 3/4

6:00 am-6:05 am

1 stop16h 05m

Reykjavik Keflavik Intl

Thu 3/13

4:55 pm-12:43 am

1 stop14h 48m

$799

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 4/22

2:40 pm-11:35 pm

1 stop25h 55m

Reykjavik Keflavik Intl

Sun 4/27

12:25 am-12:40 pm

1 stop19h 15m

$803

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 4/29

10:40 am-8:55 am

1 stop15h 15m

Reykjavik Keflavik Intl

Tue 5/6

8:10 pm-10:32 am

1 stop21h 22m

$832

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 5/20

10:50 pm-8:30 am

1 stop26h 40m

Reykjavik Keflavik Intl

Tue 5/27

12:00 pm-9:09 am

1 stop28h 09m

$856

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 4/1

11:55 am-9:30 am

1 stop14h 35m

Reykjavik Keflavik Intl

Fri 4/11

11:25 am-11:20 pm

1 stop18h 55m

$919

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 4/19

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

Sat 4/26

11:25 am-11:11 pm

1 stop18h 46m

$924

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 3/1

11:02 am-5:00 am

3 stops57h 58m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 21 results
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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
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 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 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.

Travel insights for flights from San Francisco to Keflavik Intl

Get recent, data-driven insights about flights from San Francisco to Keflavik Intl including ideal travel times, pricing trends, and more.

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 24, 2025.

Booking 20 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, November is the cheapest month in which you can book a flight from San Francisco to Reykjavik Keflavik Intl Airport (average of $328). Flying from San Francisco to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $662). 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.

What is the cheapest time of day to fly from SFO to KEF?

Find hourly flight availability from San Francisco to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 30, 2025.

It’s optimal to fly from San Francisco to Reykjavik Keflavik Intl Airport in the evening. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from San Francisco to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Keflavik Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Reykjavik Keflavik Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 30, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and KLM from San Francisco to Reykjavik. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,688 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,454 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

KLM
7.8
Good
1,335 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Austrian Airlines
7.5
Good
786 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,913 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 10 different airlines.

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

    According to our current data, WestJet ($778), Scandinavian Airlines ($783), and Icelandair ($852) offers the cheapest pricing from San Francisco to Reykjavik Keflavik Intl Airport. WestJet is priced at 22% 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 $376 on WestJet. Other airlines that offer cheap prices include Scandinavian Airlines from $511 and KLM from $635 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, November is the cheapest month in which you can book a flight from San Francisco to Reykjavik Keflavik Intl Airport (average of $328). Flying from San Francisco to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $662). 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

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Top 10 airlines flying from San Francisco to Keflavik Intl

Discover the top 10 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$528Average$775FlexibilityNo cancel feeOn-time60%
Scandinavian AirlinesCheapest$649Average$744FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$660Average$848FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$705Average$927FlexibilityNo cancel feeOn-time67%
DeltaCheapest$721Average$856FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$760Average$1,067FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$792Average$1,032FlexibilityNo cancel feeOn-time77%
KLMCheapest$832Average$987FlexibilityNo cancel feeOn-time75%
IcelandairCheapest$866Average$1,074FlexibilityNo cancel feeOn-time76%
JetBlueCheapest$1,174Average$1,382FlexibilityNo cancel feeOn-time62%
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