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Cheap flights from Reykjavik Keflavik Intl Airport to San Francisco from $526

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 12/2. 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

Enter your travel dates to find the best prices.
Icelandair Logo
5:00 pm - 11:59 pmKEF-SFO
14h 59m1 stop
Icelandair Logo
8:45 am - 6:10 amSFO-KEF
13h 25m1 stop
$845Icelandair
Find Deal
Wed, Dec 10 - Sat, Jan 17
Icelandair Logo
4:50 pm - 12:24 amKEF-SFO
15h 34m1 stop
Icelandair Logo
7:00 am - 6:10 amSFO-KEF
15h 10m1 stop
$883Icelandair
Find Deal
Tue, Jan 20 - Sat, Jan 24
Scandinavian Airlines Logo
11:30 am - 11:08 pmKEF-SFO
43h 38m2 stops
Scandinavian Airlines Logo
4:40 pm - 10:45 amSFO-KEF
34h 05m1 stop
$894Scandinavian Airlines
Find Deal
Tue, Jan 20 - Sat, Jan 24
Scandinavian Airlines Logo
11:30 am - 11:08 pmKEF-SFO
43h 38m2 stops
Scandinavian Airlines Logo
4:40 pm - 12:15 pmSFO-KEF
35h 35m2 stops
$898Scandinavian Airlines
Find Deal
Tue, Jan 20 - Sat, Jan 24
Multiple Airlines Logo
4:55 pm - 12:24 amKEF-SFO
15h 29m1 stop
Multiple Airlines Logo
9:30 pm - 6:05 amSFO-KEF
24h 35m2 stops
$899Multiple Airlines
Find Deal
Tue, Dec 16 - Tue, Dec 23
Lufthansa Logo
3:20 pm - 8:10 pmKEF-SFO
36h 50m1 stop
Lufthansa Logo
9:40 pm - 2:15 pmSFO-KEF
32h 35m1 stop
$917Lufthansa
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Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
6:05 pm - 8:10 pmKEF-SFO
34h 05m1 stop
Multiple Airlines Logo
10:20 pm - 10:15 amSFO-KEF
51h 55m2 stops
$925Multiple Airlines
Find Deal
Sat, Dec 13 - Sat, Jan 17
Lufthansa Logo
3:20 pm - 3:55 pmKEF-SFO
32h 35m1 stop
Lufthansa Logo
9:40 pm - 2:15 pmSFO-KEF
32h 35m1 stop
$956Lufthansa
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Tue, Dec 2 - Tue, Dec 9
American Airlines Logo
6:10 pm - 3:00 pmKEF-SFO
28h 50m1 stop
American Airlines Logo
4:30 pm - 10:45 amSFO-KEF
34h 15m2 stops
$981American Airlines
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Fri, Jan 16 - Tue, Jan 20
American Airlines Logo
11:50 am - 6:30 pmKEF-SFO
38h 40m2 stops
American Airlines Logo
4:30 pm - 10:45 amSFO-KEF
34h 15m2 stops
$1,018American Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20

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
Dec 10
KEF5:00 pmReykjavik Keflavik Intl
14h 59m
1 stop
SFO11:59 pmSan Francisco
Jan 17
SFO8:45 amSan Francisco
13h 25m
1 stop
KEF6:10 amReykjavik Keflavik Intl
$845
Find similar
Icelandair
Jan 20
KEF4:50 pmReykjavik Keflavik Intl
15h 34m
1 stop
SFO12:24 amSan Francisco
Jan 24
SFO7:00 amSan Francisco
15h 10m
1 stop
KEF6:10 amReykjavik Keflavik Intl
$883
Find similar
Icelandair
Jan 16
KEF5:00 pmReykjavik Keflavik Intl
14h 59m
1 stop
SFO11:59 pmSan Francisco
Jan 20
SFO7:00 amSan Francisco
15h 10m
1 stop
KEF6:10 amReykjavik Keflavik Intl
$892
Find similar

KLM flights from Reykjavik Keflavik Intl Airport to San Francisco

Our best KLM deals on Reykjavik Keflavik Intl Airport to San Francisco flight tickets
KLM
Nov 24
KEF8:05 pmReykjavik Keflavik Intl
28h 00m
2 stops
SFO4:05 pmSan Francisco
Dec 2
SFO1:55 pmSan Francisco
21h 10m
1 stop
KEF7:05 pmReykjavik Keflavik Intl
$1,027
Find similar
KLM
Dec 10
KEF8:05 pmReykjavik Keflavik Intl
27h 52m
2 stops
SFO3:57 pmSan Francisco
Jan 17
SFO10:35 amSan Francisco
24h 30m
2 stops
KEF7:05 pmReykjavik Keflavik Intl
$1,035
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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 November 3, 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

Wed 12/10

5:00 pm-11:59 pm

1 stop14h 59m

San Francisco

Sat 1/17

8:45 am-6:10 am

1 stop13h 25m

$845

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 1/20

4:50 pm-12:24 am

1 stop15h 34m

San Francisco

Sat 1/24

7:00 am-6:10 am

1 stop15h 10m

$883

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 1/20

11:30 am-11:08 pm

2 stops43h 38m

San Francisco

Sat 1/24

4:40 pm-10:45 am

1 stop34h 05m

$894

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 1/20

11:30 am-11:08 pm

2 stops43h 38m

San Francisco

Sat 1/24

4:40 pm-12:15 pm

2 stops35h 35m

$898

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 12/16

4:55 pm-12:24 am

1 stop15h 29m

San Francisco

Tue 12/23

9:30 pm-6:05 am

2 stops24h 35m

$899

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 12/2

3:20 pm-8:10 pm

1 stop36h 50m

San Francisco

Tue 12/9

9:40 pm-2:15 pm

1 stop32h 35m

$917

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Sat 12/13

6:05 pm-8:10 pm

1 stop34h 05m

San Francisco

Sat 1/17

10:20 pm-10:15 am

2 stops51h 55m

$925

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 12/2

3:20 pm-3:55 pm

1 stop32h 35m

San Francisco

Tue 12/9

9:40 pm-2:15 pm

1 stop32h 35m

$956

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

6:10 pm-3:00 pm

1 stop28h 50m

San Francisco

Tue 1/20

4:30 pm-10:45 am

2 stops34h 15m

$981

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

11:50 am-6:30 pm

2 stops38h 40m

San Francisco

Tue 1/20

4:30 pm-10:45 am

2 stops34h 15m

$1,018

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 14h 12m 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
Calistoga
Hayward
Big Sur
Santa Clara
Daly City
Fremont
Berkeley
Vallejo
Walnut Creek
Half Moon Bay
Salinas
Turlock
Livermore
Pacific Grove

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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