How long is the flight from Reykjavik Keflavik Intl Airport to San Francisco?

Departing from Reykjavik Keflavik Intl Airport to San Francisco will take you 14h 56m. The distance between Reykjavik Keflavik Intl Airport and San Francisco is about 4190 mi. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Reykjavik Keflavik Intl Airport to San Francisco as you normally would.

Most accurate provider : When it comes to deals on Reykjavik Keflavik Intl Airport-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Reykjavik Keflavik Intl Airport-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Reykjavik Keflavik Intl Airport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams 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 Reykjavik Keflavik Intl Airport-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to San Francisco from Reykjavik Keflavik Intl?

Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Reykjavik Keflavik Intl. On average, San Francisco has 0 inbound flights from Reykjavik Keflavik Intl per day from 0 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

Can I find deals for flights from Keflavik Intl to San Francisco that include hotel bookings?

Yes. In addition to deals on Keflavik Intl to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Keflavik Intl to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Keflavik Intl to San Francisco.

Can I find deals for business class flights from Keflavik Intl to San Francisco?

Yes. Cheapflights offers flight deals from Keflavik Intl to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$492+ Flights from Reykjavik Keflavik Intl Airport to San Francisco

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Keflavik Intl to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Keflavik Intl to San Francisco

Cheapest flights from Keflavik Intl to San Francisco
Explore the most affordable flight options available from Keflavik Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 4, 2025.

mar. 12/165:00 pmKEF - SFO

1 stop14h 59mMultiple Airlines

sáb. 12/278:44 pmSFO - KEF

1 stop17h 01mMultiple Airlines

Deal found 12/3

$1,156

vie. 12/265:00 pmKEF - SFO

1 stop12h 41mIcelandair

sáb. 1/37:00 amSFO - KEF

1 stop15h 15mIcelandair

Deal found 12/4

$1,208

mar. 12/1610:00 amKEF - SFO

2 stops22h 11mFinnair

sáb. 12/275:30 pmSFO - KEF

2 stops31h 30mFinnair

Deal found 12/3

$1,521

Best flights from Keflavik Intl to San Francisco
Discover carefully curated flight deals from Keflavik Intl to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 4, 2025.

jue. 2/264:50 pmKEF - SFO

1 stop14h 56mIcelandair

lun. 3/28:00 amSFO - KEF

1 stop14h 10mIcelandair

Deal found 12/2

$872

jue. 1/84:55 pmKEF - SFO

2 stops37h 30mMultiple Airlines

mié. 1/217:00 amSFO - KEF

1 stop15h 05mMultiple Airlines

Deal found 12/4

$880

jue. 2/263:40 pmKEF - SFO

1 stop30h 55mScandinavian Airlines

lun. 3/24:40 pmSFO - KEF

2 stops58h 05mScandinavian Airlines

Deal found 12/2

$887

jue. 1/810:00 amKEF - SFO

2 stops22h 47mBritish Airways

mié. 1/2110:30 pmSFO - KEF

2 stops34h 45mBritish Airways

Deal found 12/4

$1,110

mar. 12/1610:00 amKEF - SFO

2 stops22h 11mFinnair

sáb. 12/275:30 pmSFO - KEF

2 stops31h 30mFinnair

Deal found 12/3

$1,521

mar. 12/165:00 pmKEF - SFO

1 stop14h 59mMultiple Airlines

sáb. 12/278:44 pmSFO - KEF

1 stop17h 01mMultiple Airlines

Deal found 12/3

$1,156

vie. 12/265:00 pmKEF - SFO

1 stop12h 41mIcelandair

sáb. 1/37:00 amSFO - KEF

1 stop15h 15mIcelandair

Deal found 12/4

$1,208

Last-minute flights from Keflavik Intl to San Francisco
Discover last-minute flight deals from Keflavik Intl to San Francisco. Data last updated diciembre 4, 2025 and is based on user searches.

mar. 12/165:00 pmKEF - SFO

1 stop14h 59mMultiple Airlines

sáb. 12/278:44 pmSFO - KEF

1 stop17h 01mMultiple Airlines

Deal found 12/3

$1,156

mar. 12/1610:00 amKEF - SFO

2 stops22h 11mFinnair

sáb. 12/275:30 pmSFO - KEF

2 stops31h 30mFinnair

Deal found 12/3

$1,521

vie. 12/265:00 pmKEF - SFO

1 stop12h 41mIcelandair

sáb. 1/37:00 amSFO - KEF

1 stop15h 15mIcelandair

Deal found 12/4

$1,208

jue. 1/84:55 pmKEF - SFO

2 stops37h 30mMultiple Airlines

mié. 1/217:00 amSFO - KEF

1 stop15h 05mMultiple Airlines

Deal found 12/4

$880

jue. 1/810:00 amKEF - SFO

2 stops22h 47mBritish Airways

mié. 1/2110:30 pmSFO - KEF

2 stops34h 45mBritish Airways

Deal found 12/4

$1,110

sáb. 1/178:20 amKEF - SFO

2 stops36h 30mEmirates

sáb. 1/243:40 pmSFO - KEF

2 stops39h 45mEmirates

Deal found 12/3

$3,529

One-way flights from Keflavik Intl to San Francisco
Search for one-way flight options from Keflavik Intl to San Francisco. Find affordable one-way fares based on user searches. Data last updated diciembre 4, 2025.

vie. 2/277:40 amKEF - SFO

3 stops45h 28mMultiple Airlines

Deal found 12/4

$492

mié. 4/291:25 amKEF - SFO

2 stops23h 35mMultiple Airlines

Deal found 12/3

$501

lun. 12/224:45 pmKEF - SFO

1 stop14h 09mMultiple Airlines

Deal found 12/4

$639

mar. 1/66:30 pmKEF - SFO

3 stops52h 05mMultiple Airlines

Deal found 12/4

$801

lun. 1/57:35 pmKEF - SFO

3 stops48h 19mMultiple Airlines

Deal found 12/4

$1,032

lun. 12/227:35 amKEF - SFO

2 stops62h 55mTAP AIR PORTUGAL

Deal found 12/4

$1,208

Find flight deals from Keflavik Intl to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$799 (Scandinavian Airlines)
One-way from	$492 (Kiwi.com)
Popular in	February
Cheapest in	November

Provider with most accurate pricing for Reykjavik Keflavik Intl-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-San Francisco flights.

Search Deals

From Reykjavik Keflavik Intl to San Francisco

Search Deals

One-way flight from Reykjavik Keflavik Intl to San Francisco

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($19 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

jue. 2/26

4:50 pm-11:46 pm

1 stop14h 56m

San Francisco

lun. 3/2

8:00 am-6:10 am

1 stop14h 10m

$872

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

jue. 1/8

4:55 pm-10:25 pm

2 stops37h 30m

San Francisco

mié. 1/21

7:00 am-6:05 am

1 stop15h 05m

$880

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

jue. 2/26

3:40 pm-2:35 pm

1 stop30h 55m

San Francisco

lun. 3/2

4:40 pm-10:45 am

2 stops58h 05m

$887

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

jue. 1/8

10:00 am-12:47 am

2 stops22h 47m

San Francisco

mié. 1/21

10:30 pm-5:15 pm

2 stops34h 45m

$1,110

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

mar. 12/16

5:00 pm-11:59 pm

1 stop14h 59m

San Francisco

sáb. 12/27

8:44 pm-9:45 pm

1 stop17h 01m

$1,156

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

vie. 12/26

5:00 pm-9:41 pm

1 stop12h 41m

San Francisco

sáb. 1/3

7:00 am-6:15 am

1 stop15h 15m

$1,208

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

mar. 12/16

10:00 am-12:11 am

2 stops22h 11m

San Francisco

sáb. 12/27

5:30 pm-9:00 am

2 stops31h 30m

$1,521

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

vie. 2/27

7:40 am-9:08 pm

3 stops45h 28m

$492

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

mié. 4/29

1:25 am-6:00 pm

2 stops23h 35m

$501

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

lun. 12/22

4:45 pm-10:54 pm

1 stop14h 09m

$639

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 13 results

Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Reykjavik Keflavik Intl Airport-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Reykjavik Keflavik Intl Airport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams 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 Reykjavik Keflavik Intl Airport-San Francisco 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 Keflavik Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Keflavik Intl 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.

Related info for your journey

What airport do you fly into for flights to San Francisco from Reykjavik Keflavik Intl?
Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Reykjavik Keflavik Intl. On average, San Francisco has 0 inbound flights from Reykjavik Keflavik Intl per day from 0 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.
How long is the flight from Reykjavik Keflavik Intl Airport to San Francisco?
Departing from Reykjavik Keflavik Intl Airport to San Francisco will take you 14h 56m. The distance between Reykjavik Keflavik Intl Airport and San Francisco is about 4190 mi. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Keflavik Intl to San Francisco that include hotel bookings?
Yes. In addition to deals on Keflavik Intl to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Keflavik Intl to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Keflavik Intl to San Francisco.
Can I find deals for business class flights from Keflavik Intl to San Francisco?
Yes. Cheapflights offers flight deals from Keflavik Intl to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Roseville

South San Francisco

Santa Cruz

Livermore

Turlock

Manteca

Watsonville

Sunnyvale

Santa Clara

San Bruno

Daly City

Redwood City

Vallejo

Hollister

Milpitas

Foster City

Union City

Davis

San Ramon

Burlingame

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$492+ Cheap flights from Keflavik Intl (KEF) to San Francisco (SFO)

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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Keflavik Intl to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Keflavik Intl to San Francisco

Cheapest flights from Keflavik Intl to San FranciscoExplore the most affordable flight options available from Keflavik Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 4, 2025.

Explore the most affordable flight options available from Keflavik Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 4, 2025.

Find flight deals from Keflavik Intl to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Cheapflights Fare Finder

Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to San Francisco that are best for you.

Best time to book a flight from Keflavik Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Keflavik Intl with our price prediction graph.

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to San Francisco. 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 into for flights to San Francisco from Reykjavik Keflavik Intl?

How long is the flight from Reykjavik Keflavik Intl Airport to San Francisco?

Can I find deals for flights from Keflavik Intl to San Francisco that include hotel bookings?

How can I find direct flights from Keflavik Intl to San Francisco?

Can I find deals for business class flights from Keflavik Intl to San Francisco?

Traveling to a place near San Francisco?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Keflavik Intl to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Keflavik Intl to San Francisco
Explore the most affordable flight options available from Keflavik Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 4, 2025.