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Cheap flights from Keflavik Intl (KEF) to San Francisco (SFO) from $353

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 6/3. 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.
KEF — SFO
May 4 — May 111
From?
To?
Sat 5/4
Sat 5/11
1 adult, Economy
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Cheap flight deals from Keflavik Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2024.

Round-trip from

$268
From Reykjavik Keflavik Intl to San Francisco
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What is the cheapest day to fly round-trip from Reykjavik Keflavik Intl Airport to San Francisco?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Francisco. Check prices with Cheapflights to find a great deal for your trip.

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

Flights from Reykjavik Keflavik Intl Airport to San Francisco lean towards being more expensive in September. Prices are generally better when you fly from Reykjavik Keflavik Intl Airport to San Francisco in May, with the cheapest ticket starting at $739.

When is the cheapest time to fly from Reykjavik Keflavik Intl Airport to San Francisco (KEF - 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.

Cheap United Airlines flights from Keflavik Intl to San Francisco

Explore cheap flight options specifically provided by United Airlines for the route between Keflavik Intl and San Francisco. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,944,896 searches. Data last updated April 29, 2024.
Peruse some of the lowest-priced United Airlines flights we've found from Reykjavik to San Francisco. Make sure to check back often as deals are often changing.
Tue 5/2812:00 pmKEF - SFO
1 stop19h 03mUnited Airlines
Tue 6/412:55 pmSFO - KEF
1 stop12h 35mUnited Airlines
Deal found 4/28$785
Tue 7/911:00 amKEF - SFO
2 stops16h 12mUnited Airlines
Tue 7/910:15 pmSFO - KEF
2 stops27h 15mUnited Airlines
Deal found 4/27$1,677

Cheap Icelandair flights from Keflavik Intl to San Francisco

Explore cheap flight options specifically provided by Icelandair for the route between Keflavik Intl and San Francisco. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,944,896 searches. Data last updated April 29, 2024.
To aid your search, here are some of the cheapest Icelandair flights we've found from Reykjavik to San Francisco. Deals are refreshing constantly so come back soon for more options.
Fri 9/275:05 pmKEF - SFO
1 stop12h 01mIcelandair
Mon 9/3012:30 pmSFO - KEF
1 stop13h 45mIcelandair
Deal found 4/28$787
Fri 9/2710:00 amKEF - SFO
1 stop16h 48mIcelandair
Mon 9/302:45 pmSFO - KEF
1 stop11h 30mIcelandair
Deal found 4/27$820

Cheap Keflavik Intl to San Francisco flights in April & May 2024

Find cheap flight options from Keflavik Intl to San Francisco specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,944,896 searches. Prices were last updated on April 29, 2024.
Listed are some of the best fares we've found on flights departing from Reykjavik to San Francisco in 2024. Check back soon for alternative fares.
Tue 5/289:35 amKEF - SFO
1 stop33h 27mMultiple Airlines
Tue 6/42:06 pmSFO - KEF
2 stops31h 44mMultiple Airlines
Deal found 4/28$714
Tue 5/289:35 amKEF - SFO
2 stops30h 55mMultiple Airlines
Tue 6/42:06 pmSFO - KEF
2 stops31h 44mMultiple Airlines
Deal found 4/28$742
Tue 5/2812:00 pmKEF - SFO
1 stop19h 03mUnited Airlines
Tue 6/412:55 pmSFO - KEF
1 stop12h 35mUnited Airlines
Deal found 4/28$785
Tue 5/288:50 amKEF - SFO
1 stop13h 14mDelta
Mon 6/312:40 amSFO - KEF
1 stop23h 18mDelta
Deal found 4/28$796
Mon 5/2712:25 amKEF - SFO
1 stop22h 35mLufthansa
Tue 6/412:55 pmSFO - KEF
1 stop12h 35mLufthansa
Deal found 4/28$837
Tue 5/282:35 pmKEF - SFO
1 stop32h 30mMultiple Airlines
Mon 6/31:10 amSFO - KEF
2 stops24h 25mMultiple Airlines
Deal found 4/28$850
Mon 5/2712:25 amKEF - SFO
1 stop19h 15mMultiple Airlines
Mon 6/31:10 amSFO - KEF
2 stops24h 25mMultiple Airlines
Deal found 4/28$853
Tue 5/282:00 pmKEF - SFO
2 stops35h 40mMultiple Airlines
Mon 6/31:10 amSFO - KEF
2 stops24h 25mMultiple Airlines
Deal found 4/28$1,113
Tue 5/2810:10 amKEF - SFO
2 stops20h 54mAmerican Airlines
Tue 6/45:55 amSFO - KEF
3 stops21h 10mAmerican Airlines
Deal found 4/28$1,460

Keflavik Intl to San Francisco 2024 flight deals

Discover exclusive flight deals for travel between Keflavik Intl and San Francisco in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,944,896 searches. Data last updated April 29, 2024.
Listed are some of the best fares we've found on flights departing from Reykjavik to San Francisco in 2024. Check back soon for alternative fares.
Sat 6/159:35 amKEF - SFO
1 stop18h 45mMultiple Airlines
Sat 7/135:35 pmSFO - KEF
2 stops28h 20mMultiple Airlines
Deal found 4/29$652
Tue 5/289:35 amKEF - SFO
1 stop33h 27mMultiple Airlines
Tue 6/42:06 pmSFO - KEF
2 stops31h 44mMultiple Airlines
Deal found 4/28$714
Tue 5/289:35 amKEF - SFO
2 stops30h 55mMultiple Airlines
Tue 6/42:06 pmSFO - KEF
2 stops31h 44mMultiple Airlines
Deal found 4/28$742
Sat 6/159:35 amKEF - SFO
2 stops30h 55mMultiple Airlines
Sat 7/135:35 pmSFO - KEF
2 stops28h 20mMultiple Airlines
Deal found 4/29$753
Sat 6/1510:00 amKEF - SFO
1 stop20h 17mAir Canada
Sat 7/1312:15 pmSFO - KEF
1 stop13h 20mAir Canada
Deal found 4/29$759
Tue 5/2812:00 pmKEF - SFO
1 stop19h 03mUnited Airlines
Tue 6/412:55 pmSFO - KEF
1 stop12h 35mUnited Airlines
Deal found 4/28$785
Fri 9/275:05 pmKEF - SFO
1 stop12h 01mIcelandair
Mon 9/3012:30 pmSFO - KEF
1 stop13h 45mIcelandair
Deal found 4/28$787
Tue 5/288:50 amKEF - SFO
1 stop13h 14mDelta
Mon 6/312:40 amSFO - KEF
1 stop23h 18mDelta
Deal found 4/28$796
Fri 9/2710:00 amKEF - SFO
1 stop16h 48mIcelandair
Mon 9/302:45 pmSFO - KEF
1 stop11h 30mIcelandair
Deal found 4/27$820

One-way flights to San Francisco from Keflavik Intl

Search for one-way flight options from Keflavik Intl to San Francisco. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,944,896 searches. Data last updated April 29, 2024.
Take a look at some of the best available options we've come across on one-way flights from Reykjavik to San Francisco. Users needing a return flight from Reykjavik to San Francisco should utilize the search form above.
Mon 6/39:35 amKEF - SFO
2 stops30h 55mMultiple Airlines
Deal found 4/28$353
Sat 6/299:35 amKEF - SFO
2 stops34h 57mWestJet
Deal found 4/28$386
Sat 6/299:35 amKEF - SFO
1 stop33h 25mWestJet
Deal found 4/28$398
Sat 6/299:35 amKEF - SFO
3 stops22h 09mMultiple Airlines
Deal found 4/28$411
Sat 8/109:35 amKEF - SFO
2 stops34h 57mWestJet
Deal found 4/28$423
Sun 6/93:50 pmKEF - SFO
3 stops32h 24mMultiple Airlines
Deal found 4/28$456
Sat 8/109:35 amKEF - SFO
1 stop18h 45mWestJet
Deal found 4/28$461
Sun 6/93:00 pmKEF - SFO
2 stops33h 14mMultiple Airlines
Deal found 4/28$465
Sat 6/112:45 amKEF - SFO
2 stops37h 44mMultiple Airlines
Deal found 4/28$471

Find flights from Keflavik Intl to San Francisco within your budget

Customize your flight search to find flights from Keflavik Intl to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,944,896 searches. Data last updated April 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$652 - $1,198

Route

Depart

Return

Price

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Sat 6/15

1 stop18h 45m

San Francisco

Sat 7/13

2 stops28h 20m

$652

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 5/28

1 stop33h 27m

San Francisco

Tue 6/4

2 stops31h 44m

$714

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Sat 6/15

1 stop20h 17m

San Francisco

Sat 7/13

1 stop13h 20m

$759

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 5/28

1 stop19h 03m

San Francisco

Tue 6/4

1 stop12h 35m

$785

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 9/27

1 stop12h 01m

San Francisco

Mon 9/30

1 stop13h 45m

$787

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 5/28

1 stop13h 14m

San Francisco

Mon 6/3

1 stop23h 18m

$796

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 5/27

1 stop22h 35m

San Francisco

Tue 6/4

1 stop12h 35m

$837

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 9/27

1 stop34h 45m

San Francisco

Mon 9/30

2 stops31h 15m

$861

Reykjavik Keflavik IntlSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 9/26

2 stops25h 48m

San Francisco

Mon 9/30

2 stops25h 40m

$1,198

Flights are sorted by cheapest first

Deals found on 4/29

When is the cheapest time to fly from Reykjavik Keflavik Intl Airport to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Keflavik Intl to San Francisco. Price data was last updated on April 14, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Reykjavik Keflavik Intl Airport to San Francisco flight should consider departing on Sunday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to San Francisco by month

Plan your trip from Keflavik Intl to San Francisco by taking into account the cheapest months to travel. The average price of a one-way flight from Keflavik Intl to San Francisco is currently $425 while a round-trip flight costs $821. Price data was last updated on April 21, 2024.

Currently, September is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to San Francisco (average of $268). Flying from Reykjavik Keflavik Intl Airport to San Francisco in June is currently the most expensive (average of $384). 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.

January

$274

February

$281

March

$330

April

$306

May

$310

June

$384

July

$368

August

$298

September

$268

October

$268

November

$287

December

$268

Temperature and rainfall in San Francisco by month

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

SFO

Temperature

51.8 - 62.6 °F

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated April 29, 2024.
Read through reviews of airlines operating flights from Reykjavik to San Francisco, such as United Airlines, Icelandair and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,913 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.1

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Delta
8.1
Very good
10,913 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.1

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

KLM
7.9
Good
1,618 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.1

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

SWISS
7.8
Good
2,043 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.1

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Finnair
7.8
Good
1,380 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.1

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Virgin Atlantic
7.7
Good
743 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.1

Crew

8.6

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

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?

    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 flights from Reykjavik Keflavik Intl Airport to San Francisco for under $700 on Cheapflights?

    Yes, there are multiple flights from Reykjavik Keflavik Intl Airport to San Francisco for under $700. The cheapest flight booked recently is on Multiple Airlines for just $652, but on average you can expect to pay $867.

  • What are the cheapest airlines flying from Reykjavik Keflavik Intl Airport to San Francisco round-trip?

    According to our current data, Air Canada ($759), United Airlines ($785), and Icelandair ($787) offers the cheapest pricing from Reykjavik Keflavik Intl Airport to San Francisco.

  • What does KEF to SFO mean?

    KEF stands for Reykjavik Keflavik Intl Airport, while SFO stands for San Francisco Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Keflavik Intl to San Francisco that include extra baggage allowance?

    The amount of baggage you can bring on your Keflavik Intl to San Francisco flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Keflavik Intl to San Francisco with specific airlines?

    Yes, Cheapflights allows you to browse and filter Keflavik Intl to San Francisco flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Keflavik Intl to San Francisco that allow pets onboard?

    Many airlines flying from Keflavik Intl to San Francisco offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Keflavik Intl to San Francisco?

    Yes, you can often find last-minute deals on Keflavik Intl to San Francisco flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Reykjavik Keflavik Intl Airport to San Francisco flight deals updated?

    The Reykjavik Keflavik Intl Airport to San Francisco flight deals you see on this page were last updated on 4/29.

See more FAQs

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Alternative routes for Keflavik Intl to San Francisco
See prices for flight routes from nearby airports that may be better suited for you.

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Search flights from Keflavik Intl to San Francisco by cabin class

Find flights from Keflavik Intl to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Keflavik Intl to San Francisco?

Cheapflights makes it easy to find Keflavik Intl to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Keflavik Intl to San Francisco?

Millions of users choose and trust Cheapflights to book the best flight deals from Keflavik Intl to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Keflavik Intl to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Keflavik Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Keflavik Intl to San Francisco become cheaper?

Of course! You can now track prices for flights from Keflavik Intl to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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