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Cheap flights from Reykjavik Keflavik Intl Airport to San Francisco from $338

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 10/2. 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

Scandinavian Airlines Logo
1:00 pm - 4:10 pmKEF-SFO
34h 10m2 stops
Scandinavian Airlines Logo
4:40 pm - 10:45 amSFO-KEF
34h 05m1 stop
$583Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Scandinavian Airlines Logo
11:30 am - 4:10 pmKEF-SFO
35h 40m1 stop
Scandinavian Airlines Logo
4:40 pm - 10:45 amSFO-KEF
34h 05m1 stop
$622Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Scandinavian Airlines Logo
11:30 am - 4:10 pmKEF-SFO
35h 40m1 stop
Scandinavian Airlines Logo
4:40 pm - 10:45 amSFO-KEF
34h 05m1 stop
$624Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Scandinavian Airlines Logo
11:30 am - 4:10 pmKEF-SFO
35h 40m1 stop
Scandinavian Airlines Logo
4:40 pm - 10:45 amSFO-KEF
34h 05m1 stop
$632Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Scandinavian Airlines Logo
1:00 pm - 4:10 pmKEF-SFO
34h 10m2 stops
Scandinavian Airlines Logo
4:40 pm - 10:45 amSFO-KEF
34h 05m1 stop
$634Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Multiple Airlines Logo
4:55 pm - 10:27 pmKEF-SFO
12h 32m1 stop
Multiple Airlines Logo
6:34 am - 6:05 amSFO-KEF
15h 31m1 stop
$845Multiple Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
Multiple Airlines Logo
7:35 pm - 4:35 pmKEF-SFO
28h 00m2 stops
Multiple Airlines Logo
4:35 pm - 11:00 amSFO-KEF
34h 25m2 stops
$847Multiple Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Icelandair Logo
4:50 pm - 12:13 amKEF-SFO
15h 23m1 stop
Icelandair Logo
7:55 am - 6:05 amSFO-KEF
14h 10m1 stop
$892Icelandair
Find Deal
Fri, Jan 16 - Tue, Jan 20
British Airways Logo
6:10 pm - 6:00 pmKEF-SFO
30h 50m2 stops
British Airways Logo
10:33 pm - 5:05 pmSFO-KEF
34h 32m2 stops
$1,115British Airways
Find Deal
Fri, Oct 31 - Fri, Nov 7
British Airways Logo
10:00 am - 11:59 pmKEF-SFO
21h 59m2 stops
British Airways Logo
10:45 pm - 10:55 amSFO-KEF
28h 10m2 stops
$3,141British Airways
Find Deal
Wed, Nov 12 - Sun, Nov 23

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
Oct 27
KEF1:00 pmReykjavik Keflavik Intl
34h 10m
2 stops
SFO4:10 pmSan Francisco
Nov 10
SFO4:40 pmSan Francisco
34h 05m
1 stop
KEF10:45 amReykjavik Keflavik Intl
$583
Find similar
Scandinavian Airlines
Oct 27
KEF11:30 amReykjavik Keflavik Intl
35h 40m
1 stop
SFO4:10 pmSan Francisco
Nov 10
SFO4:40 pmSan Francisco
34h 05m
1 stop
KEF10:45 amReykjavik Keflavik Intl
$622
Find similar
Scandinavian Airlines
Oct 27
KEF11:30 amReykjavik Keflavik Intl
35h 40m
1 stop
SFO4:10 pmSan Francisco
Nov 10
SFO4:40 pmSan Francisco
34h 05m
1 stop
KEF10:45 amReykjavik Keflavik Intl
$624
Find similar

British Airways flights from Reykjavik Keflavik Intl Airport to San Francisco

Our best British Airways deals on Reykjavik Keflavik Intl Airport to San Francisco flight tickets
British Airways
Oct 31
KEF6:10 pmReykjavik Keflavik Intl
30h 50m
2 stops
SFO6:00 pmSan Francisco
Nov 7
SFO10:33 pmSan Francisco
34h 32m
2 stops
KEF5:05 pmReykjavik Keflavik Intl
$1,115
Find similar
British Airways
Nov 12
KEF10:00 amReykjavik Keflavik Intl
21h 59m
2 stops
SFO11:59 pmSan Francisco
Nov 23
SFO10:45 pmSan Francisco
28h 10m
2 stops
KEF10:55 amReykjavik Keflavik Intl
$3,141
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 September 16, 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

Mon 10/27

1:00 pm-4:10 pm

2 stops34h 10m

San Francisco

Mon 11/10

4:40 pm-10:45 am

1 stop34h 05m

$583

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 10/27

11:30 am-4:10 pm

1 stop35h 40m

San Francisco

Mon 11/10

4:40 pm-10:45 am

1 stop34h 05m

$622

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 10/27

11:30 am-4:10 pm

1 stop35h 40m

San Francisco

Mon 11/10

4:40 pm-10:45 am

1 stop34h 05m

$624

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 10/27

11:30 am-4:10 pm

1 stop35h 40m

San Francisco

Mon 11/10

4:40 pm-10:45 am

1 stop34h 05m

$632

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 10/27

1:00 pm-4:10 pm

2 stops34h 10m

San Francisco

Mon 11/10

4:40 pm-10:45 am

1 stop34h 05m

$634

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Wed 10/29

4:55 pm-10:27 pm

1 stop12h 32m

San Francisco

Wed 11/5

6:34 am-6:05 am

1 stop15h 31m

$845

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 10/27

7:35 pm-4:35 pm

2 stops28h 00m

San Francisco

Mon 11/10

4:35 pm-11:00 am

2 stops34h 25m

$847

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

4:50 pm-12:13 am

1 stop15h 23m

San Francisco

Tue 1/20

7:55 am-6:05 am

1 stop14h 10m

$892

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 10/31

6:10 pm-6:00 pm

2 stops30h 50m

San Francisco

Fri 11/7

10:33 pm-5:05 pm

2 stops34h 32m

$1,115

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Wed 11/12

10:00 am-11:59 pm

2 stops21h 59m

San Francisco

Sun 11/23

10:45 pm-10:55 am

2 stops28h 10m

$3,141

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

Direct flights

None
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 12h 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
Calistoga
Bodega Bay
Roseville
Hayward
Big Sur
Santa Clara
Daly City
Fremont
Berkeley
Half Moon Bay
Walnut Creek
Vallejo
Redwood City
Salinas
South San Francisco
Fairfield

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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