What are the cheapest airlines to fly from Reykjavik Keflavik Intl Airport to San Francisco one-way?

The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $273. However, be on the lookout for offers from Icelandair and British Airways, as they are both options that can get you from Reykjavik Keflavik Intl Airport to San Francisco for a low price.

What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to San Francisco (average of $276). Flying from Reykjavik Keflavik Intl Airport to San Francisco in June is currently the most expensive (average of $378). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Travelers seeking maximum savings on their Reykjavik Keflavik Intl Airport to San Francisco flight should consider departing on Monday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Reykjavik Keflavik Intl Airport-San Francisco flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

$273+ Flights from Reykjavik Keflavik Intl Airport to San Francisco

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Cheap flight deals from Keflavik Intl to San Francisco

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 2 stars
Round-trip from	$645 (PLAY)
One-way from	$273 (CheapOair)

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

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

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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 mayo 12, 2025.

mar. 6/103:45 pmKEF - SFO

1 stop14h 59mMultiple Airlines

mar. 6/177:20 amSFO - KEF

1 stop14h 25mMultiple Airlines

Deal found 5/11

$645

lun. 6/99:35 amKEF - SFO

1 stop14h 40mWestJet

lun. 6/232:45 pmSFO - KEF

2 stops34h 30mWestJet

Deal found 5/12

$689

jue. 6/269:30 amKEF - SFO

1 stop17h 27mUnited Airlines

dom. 7/66:30 amSFO - KEF

2 stops17h 30mUnited Airlines

Deal found 5/11

$824

dom. 6/157:55 pmKEF - SFO

1 stop20h 39mIcelandair

dom. 7/206:00 amSFO - KEF

1 stop17h 15mIcelandair

Deal found 5/11

$828

dom. 6/158:50 amKEF - SFO

1 stop18h 32mDelta

sáb. 7/1912:44 amSFO - KEF

1 stop23h 16mDelta

Deal found 5/12

$928

sáb. 6/141:15 amKEF - SFO

2 stops18h 25mLufthansa

dom. 7/209:05 pmSFO - KEF

2 stops19h 30mLufthansa

Deal found 5/12

$1,038

dom. 7/2012:45 amKEF - SFO

1 stop22h 25mSWISS

sáb. 7/267:30 pmSFO - KEF

1 stop21h 25mSWISS

Deal found 5/12

$1,251

dom. 6/812:10 amKEF - SFO

2 stops49h 50mAustrian Airlines

lun. 6/161:00 pmSFO - KEF

2 stops27h 20mAustrian Airlines

Deal found 5/11

$1,397

sáb. 7/128:45 amKEF - SFO

2 stops19h 27mFinnair

mié. 7/231:20 pmSFO - KEF

2 stops20h 10mFinnair

Deal found 5/12

$2,763

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 mayo 12, 2025.

mar. 6/103:45 pmKEF - SFO

1 stop14h 59mMultiple Airlines

mar. 6/177:20 amSFO - KEF

1 stop14h 25mMultiple Airlines

Deal found 5/11

$645

lun. 6/99:35 amKEF - SFO

1 stop14h 40mWestJet

lun. 6/232:45 pmSFO - KEF

2 stops34h 30mWestJet

Deal found 5/12

$689

jue. 6/269:30 amKEF - SFO

1 stop17h 27mUnited Airlines

dom. 7/66:30 amSFO - KEF

2 stops17h 30mUnited Airlines

Deal found 5/11

$824

dom. 6/157:55 pmKEF - SFO

1 stop20h 39mIcelandair

dom. 7/206:00 amSFO - KEF

1 stop17h 15mIcelandair

Deal found 5/11

$828

dom. 6/158:50 amKEF - SFO

1 stop18h 32mDelta

sáb. 7/1912:44 amSFO - KEF

1 stop23h 16mDelta

Deal found 5/12

$928

sáb. 6/141:15 amKEF - SFO

2 stops18h 25mLufthansa

dom. 7/209:05 pmSFO - KEF

2 stops19h 30mLufthansa

Deal found 5/12

$1,038

dom. 7/2012:45 amKEF - SFO

1 stop22h 25mSWISS

sáb. 7/267:30 pmSFO - KEF

1 stop21h 25mSWISS

Deal found 5/12

$1,251

dom. 6/812:10 amKEF - SFO

2 stops49h 50mAustrian Airlines

lun. 6/161:00 pmSFO - KEF

2 stops27h 20mAustrian Airlines

Deal found 5/11

$1,397

sáb. 7/128:45 amKEF - SFO

2 stops19h 27mFinnair

mié. 7/231:20 pmSFO - KEF

2 stops20h 10mFinnair

Deal found 5/12

$2,763

Last-minute flights from Keflavik Intl to San Francisco
Discover last-minute flight deals from Keflavik Intl to San Francisco. Data last updated mayo 12, 2025 and is based on user searches.

dom. 6/812:10 amKEF - SFO

2 stops49h 50mAustrian Airlines

lun. 6/161:00 pmSFO - KEF

2 stops27h 20mAustrian Airlines

Deal found 5/11

$1,397

lun. 6/99:35 amKEF - SFO

1 stop14h 40mWestJet

lun. 6/232:45 pmSFO - KEF

2 stops34h 30mWestJet

Deal found 5/12

$689

mar. 6/103:45 pmKEF - SFO

1 stop14h 59mMultiple Airlines

mar. 6/177:20 amSFO - KEF

1 stop14h 25mMultiple Airlines

Deal found 5/11

$645

sáb. 6/141:15 amKEF - SFO

2 stops18h 25mLufthansa

dom. 7/209:05 pmSFO - KEF

2 stops19h 30mLufthansa

Deal found 5/12

$1,038

dom. 6/157:55 pmKEF - SFO

1 stop20h 39mIcelandair

dom. 7/206:00 amSFO - KEF

1 stop17h 15mIcelandair

Deal found 5/11

$828

dom. 6/158:50 amKEF - SFO

1 stop18h 32mDelta

sáb. 7/1912:44 amSFO - KEF

1 stop23h 16mDelta

Deal found 5/12

$928

jue. 6/269:30 amKEF - SFO

1 stop17h 27mUnited Airlines

dom. 7/66:30 amSFO - KEF

2 stops17h 30mUnited Airlines

Deal found 5/11

$824

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 mayo 12, 2025.

lun. 5/269:35 amKEF - SFO

1 stop33h 29mWestJet

Deal found 5/12

$273

mar. 6/173:45 pmKEF - SFO

1 stop15h 14mMultiple Airlines

Deal found 5/11

$319

dom. 10/195:10 pmKEF - SFO

1 stop23h 40mIcelandair

Deal found 5/12

$709

dom. 6/2210:20 amKEF - SFO

1 stop34h 30mBritish Airways

Deal found 5/11

$727

sáb. 10/188:45 amKEF - SFO

2 stops36h 05mFinnair

Deal found 5/12

$766

lun. 6/912:25 amKEF - SFO

1 stop19h 15mLufthansa

Deal found 5/11

$815

mar. 8/1212:15 amKEF - SFO

2 stops23h 25mTurkish Airlines

Deal found 5/11

$1,012

vie. 6/139:30 amKEF - SFO

3 stops21h 00mUnited Airlines

Deal found 5/11

$1,405

sáb. 6/2812:40 amKEF - SFO

1 stop22h 30mSWISS

Deal found 5/11

$1,430

mar. 6/1012:10 amKEF - SFO

2 stops27h 52mAustrian Airlines

Deal found 5/11

$1,440

mar. 7/112:45 amKEF - SFO

2 stops29h 52mLOT

Deal found 5/12

$2,381

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

mar. 6/10

3:45 pm-11:44 pm

1 stop14h 59m

San Francisco

mar. 6/17

7:20 am-4:45 am

1 stop14h 25m

$645

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

lun. 6/9

9:35 am-5:15 pm

1 stop14h 40m

San Francisco

lun. 6/23

2:45 pm-8:15 am

2 stops34h 30m

$689

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

jue. 6/26

9:30 am-7:57 pm

1 stop17h 27m

San Francisco

dom. 7/6

6:30 am-7:00 am

2 stops17h 30m

$824

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

dom. 6/15

7:55 pm-9:34 am

1 stop20h 39m

San Francisco

dom. 7/20

6:00 am-6:15 am

1 stop17h 15m

$828

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

dom. 6/15

8:50 am-8:22 pm

1 stop18h 32m

San Francisco

sáb. 7/19

12:44 am-7:00 am

1 stop23h 16m

$928

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

sáb. 6/14

1:15 am-12:40 pm

2 stops18h 25m

San Francisco

dom. 7/20

9:05 pm-11:35 pm

2 stops19h 30m

$1,038

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

dom. 7/20

12:45 am-4:10 pm

1 stop22h 25m

San Francisco

sáb. 7/26

7:30 pm-11:55 pm

1 stop21h 25m

$1,251

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

dom. 6/8

12:10 am-7:00 pm

2 stops49h 50m

San Francisco

lun. 6/16

1:00 pm-11:20 pm

2 stops27h 20m

$1,397

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

sáb. 7/12

8:45 am-9:12 pm

2 stops19h 27m

San Francisco

mié. 7/23

1:20 pm-4:30 pm

2 stops20h 10m

$2,763

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

lun. 5/26

9:35 am-12:04 pm

1 stop33h 29m

$273

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 20 results

Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Reykjavik Keflavik Intl Airport-San Francisco flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Cheapflights Insights

Everything you need to know about your flight from Reykjavik Keflavik Intl Airport to San Francisco

Rainfall in San Francisco by month

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.

Temperature in San Francisco by month

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).

Reviews of airlines servicing San Francisco

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

LOT

7.6

Good

1,071 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines

7.6

Good

788 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,276 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,593 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.
What are the cheapest airlines to fly from Reykjavik Keflavik Intl Airport to San Francisco one-way?
The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $273. However, be on the lookout for offers from Icelandair and British Airways, as they are both options that can get you from Reykjavik Keflavik Intl Airport to San Francisco for a low price.
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.
What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to San Francisco (average of $276). Flying from Reykjavik Keflavik Intl Airport to San Francisco in June is currently the most expensive (average of $378). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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South San Francisco

Turlock

Watsonville

Manteca

Fairfield

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Hollister

Milpitas

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Alameda

Sunnyvale

Daly City

Campbell

Union City

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$273+ 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 5/26. 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

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Most trusted provider

Round-trip from

One-way from

Find 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 mayo 12, 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 mayo 12, 2025.

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.

Cheapflights Insights

Everything you need to know about your flight from Reykjavik Keflavik Intl Airport to San Francisco

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

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?

What are the cheapest airlines to fly from Reykjavik Keflavik Intl Airport to San Francisco one-way?

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?

What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to San Francisco?

Traveling to a place near Reykjavik Keflavik Intl Airport?

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Alternative routes for Keflavik Intl to San Francisco

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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 mayo 12, 2025.