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Cheap flights from Reykjavik Keflavik Intl Airport to San Francisco from $437

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Reykjavik Keflavik Intl Airport to San Francisco departing on 3/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Reykjavik Keflavik Intl Airport to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:50 pm - 12:22 am
KEF
-
SFO
15h 32m1 stop
Multiple Airlines Logo
7:00 am - 6:10 am
SFO
-
KEF
15h 10m1 stop
$679Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
4:50 pm - 12:22 am
KEF
-
SFO
15h 32m1 stop
Multiple Airlines Logo
10:40 pm - 6:10 am
SFO
-
KEF
23h 30m1 stop
$777Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
5:00 pm - 12:05 pm
KEF
-
SFO
27h 05m2 stops
Multiple Airlines Logo
7:00 am - 6:10 am
SFO
-
KEF
15h 10m1 stop
$787Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
4:55 pm - 11:00 am
KEF
-
SFO
26h 05m1 stop
Multiple Airlines Logo
7:00 am - 6:05 am
SFO
-
KEF
15h 05m1 stop
$792Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
5:00 pm - 12:30 pm
KEF
-
SFO
27h 30m2 stops
Multiple Airlines Logo
7:00 am - 6:15 am
SFO
-
KEF
15h 15m1 stop
$856Multiple Airlines
Fri, Jan 16 - Sun, Jan 18
Scandinavian Airlines Logo
3:40 pm - 2:35 pm
KEF
-
SFO
30h 55m1 stop
Scandinavian Airlines Logo
4:40 pm - 10:30 am
SFO
-
KEF
33h 50m2 stops
$877Scandinavian Airlines
Fri, Jan 30 - Fri, Feb 6
Icelandair Logo
9:55 am - 12:31 am
KEF
-
SFO
22h 36m1 stop
Icelandair Logo
8:00 am - 6:10 am
SFO
-
KEF
14h 10m1 stop
$880Icelandair
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
5:00 pm - 11:10 am
KEF
-
SFO
26h 10m1 stop
Multiple Airlines Logo
3:05 pm - 6:10 am
SFO
-
KEF
31h 05m1 stop
$895Multiple Airlines
Fri, Jan 16 - Sun, Jan 18
Scandinavian Airlines Logo
3:40 pm - 2:35 pm
KEF
-
SFO
30h 55m1 stop
Scandinavian Airlines Logo
4:40 pm - 10:45 am
SFO
-
KEF
58h 05m2 stops
$896Scandinavian Airlines
Thu, Feb 26 - Mon, Mar 2
Lufthansa Logo
3:10 pm - 7:35 pm
KEF
-
SFO
36h 25m1 stop
Lufthansa Logo
8:25 am - 2:15 pm
SFO
-
KEF
21h 50m2 stops
$920Lufthansa
Thu, Jan 15 - Wed, Jan 28

Scandinavian Airlines flights from Reykjavik Keflavik Intl Airport to San Francisco

Our best Scandinavian Airlines deals on Reykjavik Keflavik Intl Airport to San Francisco flight tickets
Scandinavian Airlines
Jan 30
KEF3:40 pmReykjavik Keflavik Intl
30h 55m
1 stop
SFO2:35 pmSan Francisco
Feb 6
SFO4:40 pmSan Francisco
33h 50m
2 stops
KEF10:30 amReykjavik Keflavik Intl
$877
Find similar
Scandinavian Airlines
Feb 26
KEF3:40 pmReykjavik Keflavik Intl
30h 55m
1 stop
SFO2:35 pmSan Francisco
Mar 2
SFO4:40 pmSan Francisco
58h 05m
2 stops
KEF10:45 amReykjavik Keflavik Intl
$896
Find similar
Scandinavian Airlines
Jan 30
KEF7:35 amReykjavik Keflavik Intl
23h 19m
2 stops
SFO10:54 pmSan Francisco
Feb 6
SFO4:40 pmSan Francisco
33h 50m
2 stops
KEF10:30 amReykjavik Keflavik Intl
$933
Find similar

Icelandair flights from Reykjavik Keflavik Intl Airport to San Francisco

Our best Icelandair deals on Reykjavik Keflavik Intl Airport to San Francisco flight tickets
Icelandair
Feb 26
KEF9:55 amReykjavik Keflavik Intl
22h 36m
1 stop
SFO12:31 amSan Francisco
Mar 2
SFO8:00 amSan Francisco
14h 10m
1 stop
KEF6:10 amReykjavik Keflavik Intl
$880
Find similar
Icelandair
Dec 26
KEF5:00 pmReykjavik Keflavik Intl
14h 03m
1 stop
SFO11:03 pmSan Francisco
Jan 3
SFO7:45 amSan Francisco
14h 30m
1 stop
KEF6:15 amReykjavik Keflavik Intl
$1,227
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Reykjavik Keflavik Intl Airport 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
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

Thu 1/15

4:50 pm-12:22 am

1 stop15h 32m

San Francisco

Wed 1/28

7:00 am-6:10 am

1 stop15h 10m

$679

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/30

4:50 pm-12:22 am

1 stop15h 32m

San Francisco

Fri 2/6

10:40 pm-6:10 am

1 stop23h 30m

$777

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 1/15

5:00 pm-12:05 pm

2 stops27h 05m

San Francisco

Wed 1/28

7:00 am-6:10 am

1 stop15h 10m

$787

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 1/15

4:55 pm-11:00 am

1 stop26h 05m

San Francisco

Wed 1/28

7:00 am-6:05 am

1 stop15h 05m

$792

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

5:00 pm-12:30 pm

2 stops27h 30m

San Francisco

Sun 1/18

7:00 am-6:15 am

1 stop15h 15m

$856

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/30

3:40 pm-2:35 pm

1 stop30h 55m

San Francisco

Fri 2/6

4:40 pm-10:30 am

2 stops33h 50m

$877

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 2/26

9:55 am-12:31 am

1 stop22h 36m

San Francisco

Mon 3/2

8:00 am-6:10 am

1 stop14h 10m

$880

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

5:00 pm-11:10 am

1 stop26h 10m

San Francisco

Sun 1/18

3:05 pm-6:10 am

1 stop31h 05m

$895

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 2/26

3:40 pm-2:35 pm

1 stop30h 55m

San Francisco

Mon 3/2

4:40 pm-10:45 am

2 stops58h 05m

$896

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 1/15

3:10 pm-7:35 pm

1 stop36h 25m

San Francisco

Wed 1/28

8:25 am-2:15 pm

2 stops21h 50m

$920

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Reykjavik Keflavik Intl Airport to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Reykjavik Keflavik Intl Airport to San Francisco is on a Thursday when prices can be found for as low as $803. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $931.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Reykjavik Keflavik Intl Airport to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $843. Flights in the afternoon are often more expensive with an average ticket price of $854.

When to book flights from Reykjavik Keflavik Intl Airport to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Reykjavik Keflavik Intl Airport to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Reykjavik Keflavik Intl Airport to San Francisco (KEF to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Reykjavik Keflavik Intl Airport to San Francisco

Fastest flight time

15h 32m

Direct flights

None
The fastest flight from Reykjavik Keflavik Intl Airport to San Francisco takes 15h 32m
There are no direct flights from Reykjavik Keflavik Intl Airport to San Francisco. There are no popular flight routes from Reykjavik Keflavik Intl Airport to San Francisco.
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  • How far is Reykjavik Keflavik Intl to San Francisco by plane?

    San Francisco is 4180.8 mi away from Reykjavik Keflavik Intl. Typically, this will take 15h 32m by plane in normal conditions.

  • When did momondo last update prices for flights from Reykjavik Keflavik Intl Airport to San Francisco Airport?

    Prices for flights from Reykjavik Keflavik Intl Airport to San Francisco Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Reykjavik Keflavik Intl Airport to San Francisco Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Reykjavik Keflavik Intl Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Bodega Bay
Roseville
Hayward
Calistoga
Big Sur
Berkeley
Santa Clara
Walnut Creek
Fremont
Daly City
Half Moon Bay
Vallejo
Salinas
Livermore
Sunnyvale
Turlock

Why use momondo?

Why should I use momondo to find a flight deal from Reykjavik to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Reykjavik.

Can I find flights from Reykjavik to San Francisco with flexible booking policies on momondo?

All flight searches from Reykjavik to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Reykjavik to San Francisco?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Reykjavik to San Francisco.

I’m not ready to book a flight from Reykjavik to San Francisco right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Reykjavik to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.

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