$247 Cheap Flights from San Francisco (SFO) to Reykjavik (KEF)

View $247 flight on Fri, Oct 10, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Reykjavik–Keflavik Intl. Airport (KEF)

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

Prices were available within the past 7 days and start at $247 for one-way flights and $408 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Aug 1 - Mon, Aug 10
SFO
San Francisco
KEF
Reykjavik
$408 Roundtrip, found 1 day ago
$408
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug 1 from San Francisco to Reykjavik, returning Mon, Aug 10, priced at $408 found 1 day ago
Alaska Airlines
Mon, Jun 8 - Wed, Jul 8
SFO
San Francisco
KEF
Reykjavik
$448 Roundtrip, found 1 day ago
$448
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Jun 8 from San Francisco to Reykjavik, returning Wed, Jul 8, priced at $448 found 1 day ago
Alaska Airlines
Mon, Jul 6 - Thu, Jul 23
SFO
San Francisco
KEF
Reykjavik
$469 Roundtrip, found 13 hours ago
$469
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Mon, Jul 6 from San Francisco to Reykjavik, returning Thu, Jul 23, priced at $469 found 13 hours ago
WestJet
Sun, Oct 5 - Tue, Oct 7
SFO
San Francisco
KEF
Reykjavik
$528 Roundtrip, found 7 hours ago
$528
Roundtrip
found 7 hours ago
Select WestJet flight, departing Sun, Oct 5 from San Francisco to Reykjavik, returning Tue, Oct 7, priced at $528 found 7 hours ago
Lufthansa
Wed, Apr 15 - Thu, Apr 23
SFO
San Francisco
KEF
Reykjavik
$560 Roundtrip, found 5 days ago
$560
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Wed, Apr 15 from San Francisco to Reykjavik, returning Thu, Apr 23, priced at $560 found 5 days ago
Swiss International Air Lines
Sun, Oct 12 - Mon, Nov 3
SFO
San Francisco
KEF
Reykjavik
$583 Roundtrip, found 9 hours ago
$583
Roundtrip
found 9 hours ago
Select Swiss International Air Lines flight, departing Sun, Oct 12 from San Francisco to Reykjavik, returning Mon, Nov 3, priced at $583 found 9 hours ago
Delta
Sun, Sep 14 - Thu, Oct 2
SFO
San Francisco
KEF
Reykjavik
$593 Roundtrip, found 4 days ago
$593
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Sep 14 from San Francisco to Reykjavik, returning Thu, Oct 2, priced at $593 found 4 days ago
British Airways
Tue, Apr 14 - Tue, Apr 21
SFO
San Francisco
KEF
Reykjavik
$609 Roundtrip, found 13 hours ago
$609
Roundtrip
found 13 hours ago
Select British Airways flight, departing Tue, Apr 14 from San Francisco to Reykjavik, returning Tue, Apr 21, priced at $609 found 13 hours ago
Scandinavian Airlines
Sun, Oct 19 - Sat, Oct 25
SFO
San Francisco
KEF
Reykjavik
$651 Roundtrip, found 1 hour ago
$651
Roundtrip
found 1 hour ago
Select Scandinavian Airlines flight, departing Sun, Oct 19 from San Francisco to Reykjavik, returning Sat, Oct 25, priced at $651 found 1 hour ago
Air Canada
Wed, Sep 17 - Tue, Sep 23
SFO
San Francisco
KEF
Reykjavik
$660 Roundtrip, found 3 days ago
$660
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Sep 17 from San Francisco to Reykjavik, returning Tue, Sep 23, priced at $660 found 3 days ago

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

July is typically the cheapest month to fly

From $536 - $1,170 per traveler.

Alternative airports near Reykjavik

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Keflavik Intl. KEF. Cheapest option available. Average driving time to city center is 45 minutes. Flights from $653
KEF
Keflavik Intl.
Cheapest
Average driving time to city center45 min
Flights from $653
Flights from San Francisco (SFO) to Reykjavik (KEF)
Origin airport
San Francisco Intl.
Destination airport
Keflavik Intl.
Airlines serving
Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet
Roundtrip price
$408
Distance
4192 mi

San Francisco to Reykjavik Flights

The cheapest times to fly from San Francisco to Reykjavik

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Reykjavik are during the month of August. You can find some of the cheapest flights from San Francisco to Reykjavik with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Reykjavik

Sunday is one of the best days to book for cheap flights from San Francisco to Reykjavik: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Reykjavik

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Reykjavik in 2025. You can also book with separate airlines for your outbound and return journeys, from $247 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Reykjavik flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Reykjavik airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF) cost?
Secure a cheap one-way flight from $247 or cheap return flight from $408 from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF)?
Traveling in August may help you find better deals, as it's the cheapest month for flights between SFO and KEF. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from SFO to KEF. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF)?
You'll need to catch a flight with a layover when traveling from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SFO to KEF?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from SFO to KEF?
Consider booking with Icelandair if you'd like to go straight from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF) without any holdups. This airline has the strongest track record for punctuality, with an on-time score of 82%. Want to get notified of any changes? You can check your flight status using the Expedia App.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF)?
To arrive at Keflavik Intl. Airport (KEF) on schedule, book a flight that leaves from San Francisco Intl. Airport (SFO) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF) last-minute?
Waiting until just before your departure to book a flight from SFO to KEF generally means paying more. While you may find some last-minute discounts, there's no guarantee. Be flexible with your travel plans for a better chance of scoring a bargain.
Is it cheaper to book a SFO to KEF flight and hotel package?
Booking a SFO to KEF flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our extensive range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Keflavik Intl. Airport (KEF)?
It's usually possible to cancel or reschedule your SFO to KEF flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.