$454 Cheap Flights from San Francisco (SFO) to Reykjavik (KEF)

View $454 flight on Mon, Feb 16, 2026Opens in a new window

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

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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

Prices were available within the past 7 days and start at $454 for one-way flights and $540 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Dec 31 - Thu, Jan 15
SFO
San Francisco
KEF
Reykjavik
$540 Roundtrip, found 4 hours ago
$540
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Dec 31 from San Francisco to Reykjavik, returning Thu, Jan 15, priced at $540 found 4 hours ago
Swiss International Air Lines
Wed, Dec 31 - Sat, Jan 17
SFO
San Francisco
KEF
Reykjavik
$542 Roundtrip, found 1 day ago
$542
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Wed, Dec 31 from San Francisco to Reykjavik, returning Sat, Jan 17, priced at $542 found 1 day ago
Swiss International Air Lines
Thu, Jan 22 - Sat, Jan 31
SFO
San Francisco
KEF
Reykjavik
$542 Roundtrip, found 3 hours ago
$542
Roundtrip
found 3 hours ago
Select Swiss International Air Lines flight, departing Thu, Jan 22 from San Francisco to Reykjavik, returning Sat, Jan 31, priced at $542 found 3 hours ago
Lufthansa
Wed, Apr 15 - Thu, Apr 23
SFO
San Francisco
KEF
Reykjavik
$588 Roundtrip, found 1 day ago
$588
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Wed, Apr 15 from San Francisco to Reykjavik, returning Thu, Apr 23, priced at $588 found 1 day ago
Virgin Atlantic
Tue, Apr 21 - Tue, Apr 28
SFO
San Francisco
KEF
Reykjavik
$589 Roundtrip, found 5 days ago
$589
Roundtrip
found 5 days ago
Select Virgin Atlantic flight, departing Tue, Apr 21 from San Francisco to Reykjavik, returning Tue, Apr 28, priced at $589 found 5 days ago
United
Mon, Aug 17 - Tue, Aug 25
SFO
San Francisco
KEF
Reykjavik
$591 Roundtrip, found 2 days ago
$591
Roundtrip
found 2 days ago
Select United flight, departing Mon, Aug 17 from San Francisco to Reykjavik, returning Tue, Aug 25, priced at $591 found 2 days ago
Air Canada
Tue, Aug 18 - Tue, Aug 25
SFO
San Francisco
KEF
Reykjavik
$599 Roundtrip, found 1 day ago
$599
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Aug 18 from San Francisco to Reykjavik, returning Tue, Aug 25, priced at $599 found 1 day ago
Delta
Tue, Apr 28 - Tue, May 5
SFO
San Francisco
KEF
Reykjavik
$608 Roundtrip, found 5 hours ago
$608
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Apr 28 from San Francisco to Reykjavik, returning Tue, May 5, priced at $608 found 5 hours ago
British Airways
Mon, Apr 13 - Thu, Apr 23
SFO
San Francisco
KEF
Reykjavik
$615 Roundtrip, found 2 days ago
$615
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Apr 13 from San Francisco to Reykjavik, returning Thu, Apr 23, priced at $615 found 2 days ago
Scandinavian Airlines
Mon, Jan 26 - Sat, Jan 31
SFO
San Francisco
KEF
Reykjavik
$691 Roundtrip, found 1 day ago
$691
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Mon, Jan 26 from San Francisco to Reykjavik, returning Sat, Jan 31, priced at $691 found 1 day ago

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

July is typically the cheapest month to fly

From $536 - $1,138 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 $832
KEF
Keflavik Intl.
Cheapest
Average driving time to city center45 min
Flights from $832

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 $454 or cheap return flight from $540 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 December 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.

Travel information

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
$540
Distance
4192 mi

Book with confidence

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 December. 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 $454 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.

 

San Francisco to Reykjavik Flights

Explore a world of travel with Expedia

*Available to One Key members.