£363 Cheap Flights from San Francisco (SFO) to Reykjavik (KEF)

View £363 flight on Wed, 30 Sept 2026Opens in a new window

Flight 1

Popular airlines from San Francisco International Airport (SFO) to Keflavik International Airport (KEF)

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Cheap Flights from San Francisco (SFO) to Reykjavik (KEF)

Prices were available within the past 7 days and start at £363 for one-way flights and £597 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Tue, 6 Oct - Tue, 13 Oct
SFO
San Francisco
KEF
Reykjavik
£597 Return, found 6 days ago
£597
Return
found 6 days ago
Select Icelandair flight, departing Tue, 6 Oct from San Francisco to Reykjavik, returning Tue, 13 Oct, priced at £597 found 6 days ago
Icelandair
Tue, 13 Oct - Tue, 20 Oct
SFO
San Francisco
KEF
Reykjavik
£598 Return, found 19 hours ago
£598
Return
found 19 hours ago
Select Icelandair flight, departing Tue, 13 Oct from San Francisco to Reykjavik, returning Tue, 20 Oct, priced at £598 found 19 hours ago
JetBlue Airways
Tue, 15 Sept - Tue, 22 Sept
SFO
San Francisco
KEF
Reykjavik
£607 Return, found 3 days ago
£607
Return
found 3 days ago
Select JetBlue Airways flight, departing Tue, 15 Sept from San Francisco to Reykjavik, returning Tue, 22 Sept, priced at £607 found 3 days ago
Icelandair
Tue, 22 Sept - Tue, 29 Sept
SFO
San Francisco
KEF
Reykjavik
£608 Return, found 1 day ago
£608
Return
found 1 day ago
Select Icelandair flight, departing Tue, 22 Sept from San Francisco to Reykjavik, returning Tue, 29 Sept, priced at £608 found 1 day ago
Icelandair
Tue, 6 Oct - Tue, 13 Oct
SFO
San Francisco
KEF
Reykjavik
£613 Return, found 6 days ago
£613
Return
found 6 days ago
Select Icelandair flight, departing Tue, 6 Oct from San Francisco to Reykjavik, returning Tue, 13 Oct, priced at £613 found 6 days ago
Alaska Airlines
Sun, 7 Jun - Sun, 14 Jun
SFO
San Francisco
KEF
Reykjavik
£619 Return, found 4 days ago
£619
Return
found 4 days ago
Select Alaska Airlines flight, departing Sun, 7 Jun from San Francisco to Reykjavik, returning Sun, 14 Jun, priced at £619 found 4 days ago
Scandinavian Airlines
Sat, 24 Oct - Sat, 31 Oct
SFO
San Francisco
KEF
Reykjavik
£657 Return, found 19 hours ago
£657
Return
found 19 hours ago
Select Scandinavian Airlines flight, departing Sat, 24 Oct from San Francisco to Reykjavik, returning Sat, 31 Oct, priced at £657 found 19 hours ago
WestJet
Wed, 23 Sept - Thu, 1 Oct
SFO
San Francisco
KEF
Reykjavik
£752 Return, found 1 day ago
£752
Return
found 1 day ago
Select WestJet flight, departing Wed, 23 Sept from San Francisco to Reykjavik, returning Thu, 1 Oct, priced at £752 found 1 day ago
United
Wed, 26 Aug - Thu, 3 Dec
SFO
San Francisco
KEF
Reykjavik
£762 Return, found 1 day ago
£762
Return
found 1 day ago
Select United flight, departing Wed, 26 Aug from San Francisco to Reykjavik, returning Thu, 3 Dec, priced at £762 found 1 day ago
Swiss International Air Lines
Tue, 11 Aug - Tue, 18 Aug
SFO
San Francisco
KEF
Reykjavik
£781 Return, found 2 days ago
£781
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Tue, 11 Aug from San Francisco to Reykjavik, returning Tue, 18 Aug, priced at £781 found 2 days ago

Find the cheapest month to fly from San Francisco (SFO) to Reykjavik (KEF)

November is typically the cheapest month to fly

From £529 - £732 per traveller.

Frequently asked questions

How do I find cheap flights from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
There are approximately 110 connecting flights per day from San Francisco International Airport (SFO) to Keflavik International (KEF). Some common connection points include Los Angeles International Airport (LAX), John F. Kennedy International Airport (JFK), and Seattle - Tacoma International Airport (SEA).
What is the earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
The earliest flight from San Francisco International Airport (SFO) to Reykjavik (KEF-Keflavik Intl.) typically departs at approximately 12:05 AM local time, operated by Delta. This is a seasonal service active in May. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
You'll typically find the most flights from San Francisco International Airport (SFO) to Keflavik International Airport (KEF) on a Monday, with around 86 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and Alaska Airlines. Compared to other days, Monday offers notably more flight options.
What are the most popular departure times for flights from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
The most popular departure times for flights from San Francisco International Airport (SFO) to Keflavik International Airport (KEF) are between 12pm and 3pm. This accounts for around 27% of total traffic. Many major carriers, including Alaska Airlines, WestJet and Delta, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll arrive in Reykjavik with plenty of time to settle in.
How long does it take to fly from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
A flight from SFO to KEF with a layover takes around 13 hours 50 minutes, with the route covering approximately 4,193 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
Select the "Business class" and "First class" filters when looking for SFO to KEF flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.) flight with Expedia?
It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Reykjavik from San Francisco Intl. (SFO)?
If you're planning to travel to Reykjavik from San Francisco Intl. (SFO), you can fly directly into Keflavik Intl. (KEF) Some flights may connect through major hubs like Los Angeles Intl. (LAX), O'Hare Intl. (ORD), John F. Kennedy Intl. (JFK) before reaching Reykjavik. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.) at the last minute?
Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.) flight and hotel package?
Securing a San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.)?
If you booked your San Francisco, CA (SFO-San Francisco Intl.) to Reykjavik (KEF-Keflavik Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Keflavik Intl.
Airlines serving
Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic, WestJet
Return price
£597
Distance
6707 km

Book with confidence

Compare flights from San Francisco to Reykjavik easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Francisco to Reykjavik. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Keflavik Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Francisco Intl. to Keflavik Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from San Francisco Intl. (SFO) to Keflavik Intl. (KEF)

The easiest way to view the best deals on flights from San Francisco to Reykjavik today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Francisco Intl. to Keflavik Intl. start at just £597 and range up to £781.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near San Francisco and Reykjavik
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your San Francisco to Reykjavik flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Francisco Intl. to Keflavik Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from San Francisco to Reykjavik easily and book with confidence

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*Available to Expedia members.