SFO - KEF

$260 Find Cheap Flights from San Francisco to Reykjavik - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Reykjavik departing on 7/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Reykjavik Keflavik Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Reykjavik.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Reykjavik.
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Everything you should know

Cheapest round-trip
$664
Typical prices: $879-$1,064
WestJet
Sat 8/15Tue 8/25
SFO - KEF • 1 stop
Cheapest one-way
$260
Typical prices: $553-$657
Alaska Airlines
Wed 7/22
SFO - KEF • 1 stop
Top airlines
Cheapest • from $664 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between San Francisco and Reykjavik. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $712 (round-trip)
Shortest trip • 11h 13m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 28% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
Good to know
+1
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We hope you love your trip to Reykjavik!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Reykjavik that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Reykjavik

Sat, Aug 15 - Tue, Aug 25
WestJet Logo
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
WestJet Logo
9:00 am - 4:40 pm
KEF
-
SFO
14h 40m
1 stop
$664WestJet
Mon, Aug 17 - Sat, Aug 29
WestJet Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
WestJet Logo
9:00 am - 4:40 pm
KEF
-
SFO
14h 40m
1 stop
$665WestJet
Sun, Jul 26 - Thu, Jul 30
Alaska Airlines Logo
7:03 am - 9:00 am
SFO
-
KEF
18h 57m
1 stop
Alaska Airlines Logo
12:45 pm - 6:48 pm
KEF
-
SFO
13h 03m
1 stop
$667Alaska Airlines
Thu, Aug 13 - Thu, Sep 3
WestJet Logo
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
WestJet Logo
9:00 am - 4:40 pm
KEF
-
SFO
14h 40m
1 stop
$668WestJet
Sat, Aug 15 - Thu, Aug 20
WestJet Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
$669WestJet
Sun, Aug 23 - Sun, Aug 30
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
WestJet Logo
9:00 am - 12:00 pm
KEF
-
SFO
34h 00m
1 stop
$670WestJet
Fri, Aug 14 - Fri, Aug 21
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
WestJet Logo
9:00 am - 4:40 pm
KEF
-
SFO
14h 40m
1 stop
$671WestJet
Sat, Jul 25 - Thu, Aug 6
Alaska Airlines Logo
8:28 pm - 9:00 am
SFO
-
KEF
29h 32m
1 stop
Alaska Airlines Logo
12:45 pm - 10:55 pm
KEF
-
SFO
17h 10m
1 stop
$673Alaska Airlines
Mon, Jul 27 - Fri, Aug 7
Alaska Airlines Logo
8:28 pm - 9:00 am
SFO
-
KEF
29h 32m
1 stop
Alaska Airlines Logo
12:45 pm - 8:48 pm
KEF
-
SFO
15h 03m
1 stop
$674Alaska Airlines
Tue, Jul 28 - Wed, Aug 5
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
$675WestJet
Booking Insights

KAYAK's insights & trends for San Francisco to Reykjavik flights

Get data-powered insights and trends into flights from San Francisco to Reykjavik to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Francisco to Reykjavik Keflavik Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to Reykjavik Keflavik Intl Airport departing in August.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Reykjavik Keflavik Intl Airport is December, where tickets cost $740 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $1,148 and $1,104 respectively.

How far in advance should I book a flight from San Francisco to Reykjavik Keflavik Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Reykjavik Keflavik Intl Airport, you should book around 3 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$260
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from San Francisco to Reykjavik

When to book flights from San Francisco to Reykjavik

Are your dates flexible? Find out the best times to travel from San Francisco to Reykjavik based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Francisco to Reykjavik flights

  • Which airline offers environmentally friendly options for flying from San Francisco to Reykjavík?

    By investing in new, fuel-efficient aircraft and putting numerous sustainability programs into place, SAS and Icelandair have been actively working to become more environmentally friendly for flights from San Francisco to Reykjavík.

  • How can I travel to my location from Keflavik International Airport (KEF)?

    From the airport, you can board the “Straetó” bus to travel to Reykjavík and other Icelandic cities. At the airport, taxis are also easily accessible. You can find them right outside the terminal building. This option provides easy access and direct transportation to your location. If having your own vehicle gives you more flexibility, you can rent one from one of the car rental firms located at the airport.

  • Can I upgrade a class for flights from San Francisco to Reykjavík?

    Yes – you can upgrade to a better class on United Airlines, Icelandair, Delta Air Lines, and SAS (Scandinavian Airlines). These airlines enable passengers to upgrade to a higher class, subject to availability, either at the time of booking or closer to the departure date. Additionally, upgrading your ticket to a higher class is possible by using miles or points.

  • Where do flights from San Francisco to Reykjavík's layovers often take place?

    The majority of San Francisco to Reykjavík flights make a stopover at one of the following locations: Copenhagen (CPH) for SAS Airlines, Minneapolis (MSP), New York (JFK) for Delta Air Lines, or Chicago (ORD) for United. If you choose to take a flight with Air Canada, you will make a stop in one of the following cities: Toronto (YYZ), Montreal (YUL), or Vancouver (YVR), and then connect to Reykjavík (KEF).

  • What is the cheapest flight from San Francisco to Reykjavik Keflavik Intl Airport?

    In the last 5 days, the lowest price for a flight from San Francisco to Reykjavik Keflavik Intl Airport was $232 for a one-way ticket and $664 for a round-trip.

  • Do I need a passport to fly between San Francisco and Reykjavik?

    Yes

  • Which aircraft models fly most regularly from San Francisco to Reykjavik?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Reykjavik?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between San Francisco and Reykjavik, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Reykjavik from San Francisco?

    Seattle is the most popular layover city among KAYAK users traveling from San Francisco to Reykjavik.

  • Which is the best airline for flights from San Francisco to Reykjavik, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from San Francisco to Reykjavik are Alaska Airlines and Delta. With an average price for the route of $1,033 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $771 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from San Francisco to Reykjavik?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Reykjavik.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Reykjavik?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Reykjavik?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and KEF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Reykjavik?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Francisco to Reykjavik Keflavik Intl Airport

  • When you choose to book your flights through Alaska Airlines, which operates from San Francisco International Airport (SFO) as its hub, there are several benefits. You have a great chance of finding a flight that fits conveniently with your travel plans due to the availability of daily flights connecting San Francisco and Reykjavík.
  • Icelandair, United Airlines, Delta Air Lines, and Air Canada provide reservations for passengers with disabilities, particularly those with limited mobility. These airlines offer specialized services to accommodate passengers with impairments, including mobility assistance, priority boarding and disembarking, wheelchair-accessible seating options, and trained staff to assist them during their travel.
  • Airlines such as Icelandair, Delta Air Lines, SAS (Scandinavian Airlines), United Airlines, Alaska Airlines, and Air Canada cater to families traveling with children on flights from San Francisco to Reykjavík. These carriers provide various amenities like children's meals, activity kits, and entertainment options specifically designed to keep young travelers happy and engaged during the journey.
  • There are several airlines that let passengers bring pets on board for flights from San Francisco to Reykjavík, including SAS, Air Canada, Lufthansa United, and Icelandair. Larger animals can be carried in the airplane hold as checked luggage. The pet carrier must be leak-proof and sufficiently ventilated to guarantee the pet's comfort and safety.
  • When traveling from San Francisco to Reykjavík with a considerable amount of luggage, it's recommended to choose an airline with more flexible carry-on baggage policies. For instance, Icelandair permits passengers to carry a personal item and a carry-on bag into the cabin, with a maximum weight limit of 70 lbs. per bag.

Reviews of the top 5 airlines serving from San Francisco to Reykjavik

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Reykjavik. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Reykjavik? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12592 reviews
8.5Crew
7.8Comfort
7.0Entertainment
8.1Boarding
7.0Food
Airline reviews

Not able to get boarding pass for domestic connection flight when check in at international airport. I was told I need to get connection flight boarding pass after I entered US. It us very inconvenient.

6.0 GoodVI, Jun 2026
SFO - SAN
Read more Alaska Airlines reviews

Not able to get boarding pass for domestic connection flight when check in at international airport. I was told I need to get connection flight boarding pass after I entered US. It us very inconvenient.

They called me 2 hours before my original flight from SFO was to depart to let me know it was delayed and that I would miss my connection. They then rebooked on a different flight leaving a half hour earlier to a different connecting airport, so that I would not miss my connection. It all worked out and I arrived at my destination without a problem and 15 minutes earlier than the original flight would have. Nice!

The flight would have been very good , if not dor the constantly screaming baby in the row behind me. Is there a way to isolate people traveling with infants? This is not the first time this has happened to me.

They treat me well because of my one world status. Crew is attentive and professional. One of the best airlines out there.

Crew were bad Didn’t help with luggage When asked for a glass of wine, I was told that they will serve later , which they didn’t to Me and didn’t serve anyone else in First class . Didn’t offer any snacks , Chips or Nuts to anyone . Flight was not crowded either. Worst Service/ or No Service !

Alaska drastically changed our flight from a direct flight to a flight with connection and a long layover. So we canceled the Alaska flight and we learned a valuable lesson that we will never book through kayak again because the third party travel agent tried to withhold our money.

Four hour delay. Missed our event. And they offered me $75. Absolutely shameful.

I have been flying commercial for decades. I was in one of the ladder boarding groups, had my bag tagged because they thought there was not going to be enough space for it in the overhead bins. I politely asked one of the attendance if I could try to find a space- she said I could and I did. I then took the bag tag off and gave it to one of the other attendants as I was told to do by the first one. He, in a curt, anal, and disrespectful manner, told me that I needed to take my bag down from the overhead bin and check it. This was a situation I’ve never encountered before. The attendant’s attitude was confrontational and belittling in front of other onlooking passengers as if daring me to challenge him. I am a physician who takes care of patients day in and day out. Not wanting to make a scene, I calmly told him, “do what you need to do.” he took my bag down from the overhead bin, put the back tag back on it, and checked it only to make room for another bag that was also supposed to be technically checked by a following passenger. The same male attendant later came up to me and said “you shouldn’t have showed me the bag tag,” as if conveying that he was just following protocol was a justification for treating me like a kid out of line. I cared about this because it took 15 minutes from my life to then retrieve the bag at baggage claim and it also felt like really poor customer service. I understand the need for protocols. This is also a service industry, and we the passengers are the clients. We should be made to feel welcome and respected and our life in transit made as easy as it can be within reason. This attendant clearly needs to be reminded of that. Of note, an older female fellow passenger sitting next to me agreed with this assessment.

Nice crew, healthy snacks and drinks available. Flight to Seattle was short and comfortable.

had to be rerouted due to a medical emergency onboard. Alaska crew treated the patient with utmost respect and continued to keep the passengers updated the entire way through, which I appreciate. But it took 4 hours from landing until we were able to be airborne again, causing us to not get into SFO until ~2 am. I understand it was a tough situation for everyone, but that was an indecent wait.

Flight delayed four separate times. I’m now one hour hours late to landing.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

New boarding doesn't make sense. Filling front first is slow.

No extra snacks were available. Meals quality is terrible. Crew was not friendly.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was perfect! United Airlines staff was extremely caring, super friendly and professional

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Lost of requested seat assignments. Lost my husband's meal choice

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

United cancelled the flight after a 2 hour delay. The only choice was a 24 hour delay which was then 3 hours delayed.

They lost my bag. Hopefully it will be here tomorrow.

The trip from LAX to Calgary was aboard a 737-700, which is more than twenty years old. Service was fine, and the food was good, but there was no inflight entertainment, and no WiFi. The flight from Calgary to Vancouver was also delayed more than an hour, due to congestion on the Calgary tarmac. And no food service, but there was in-flight WiFi which made a big difference.

Kayak was the problem! The tickets we bought did not allow for carry on or checked luggage and we ended up paying more for those services than the tickets! The paperwork Kayak provided for the receipt left the luggage policy for Westair intentionally blank. This was intentionally decietful on Kayak's part. Our additional cost was over $400.00! I will be calling customer service today asking for refunds and I will keep you informed on any review sites as I can. Keith

They cancelled and moved my flight with no email or text or any other notice. I discovered this only when I attempted to check in for my flight. Actual flying experience was above average.

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic! No entertainment possibilities. Not even a plug-in for phone or IPad if you wanted to watch a downloaded movie. Back to flying Air Canada!

The flight was on time - which is good. But pretty much every other aspect of the experience was bad. They charged 55$ for a carry on bag!

Flight was old and the seats were not comfortable at all. They made me pay 55$ to take my carry-on bag onboard.

The seats were very comfortable. However the meal on the transatlantic portion of the trip was not very good, even by airline food standards.

They made my minor daughter leave the area and go back though security during a flight connection with her checked luggage

Good. Rxception is the Entertainment - movies and TV shows all out of date…

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

It was too cold in the plane my feet froze

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Everything you need to know for your flight from San Francisco to Reykjavik

Information on your arrival and departure airports