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Cheap flights from Reykjavik Keflavik Intl Airport to San Francisco from $313

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 9/11. 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

Logo
9:35 am - 5:14 pmKEF-SFO
14h 39m1 stop
Logo
10:15 am - 8:15 amSFO-KEF
39h 00m2 stops
$564
Find Deal
Mon, Sep 22 - Tue, Oct 7
WestJet Logo
9:35 am - 5:14 pmKEF-SFO
14h 39m1 stop
WestJet Logo
7:30 am - 8:15 amSFO-KEF
17h 45m1 stop
$578WestJet
Find Deal
Mon, Sep 15 - Mon, Sep 22
Scandinavian Airlines Logo
5:10 pm - 4:30 pmKEF-SFO
30h 20m1 stop
Scandinavian Airlines Logo
7:40 pm - 9:30 amSFO-KEF
30h 50m1 stop
$589Scandinavian Airlines
Find Deal
Mon, Sep 22 - Tue, Oct 7
Scandinavian Airlines Logo
5:10 pm - 4:30 pmKEF-SFO
30h 20m1 stop
Scandinavian Airlines Logo
7:40 pm - 4:20 pmSFO-KEF
37h 40m1 stop
$597Scandinavian Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 23
United Airlines Logo
9:30 am - 7:51 pmKEF-SFO
17h 21m1 stop
United Airlines Logo
10:40 am - 8:10 amSFO-KEF
14h 30m2 stops
$859United Airlines
Find Deal
Fri, Sep 12 - Sat, Sep 27
United Airlines Logo
12:00 pm - 8:10 pmKEF-SFO
15h 10m2 stops
United Airlines Logo
10:35 am - 8:10 amSFO-KEF
14h 35m2 stops
$865United Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 23
Icelandair Logo
4:50 pm - 12:54 amKEF-SFO
16h 04m1 stop
Icelandair Logo
7:55 am - 6:15 amSFO-KEF
14h 20m1 stop
$880Icelandair
Find Deal
Fri, Jan 16 - Tue, Jan 20
Icelandair Logo
5:00 pm - 12:28 amKEF-SFO
15h 28m1 stop
Icelandair Logo
8:00 am - 6:15 amSFO-KEF
14h 15m1 stop
$887Icelandair
Find Deal
Tue, Nov 11 - Sun, Nov 16
Lufthansa Logo
12:25 am - 7:55 pmKEF-SFO
26h 30m1 stop
Lufthansa Logo
9:40 pm - 3:15 pmSFO-KEF
33h 35m2 stops
$947Lufthansa
Find Deal
Wed, Oct 22 - Sun, Nov 2
Lufthansa Logo
12:25 am - 12:40 pmKEF-SFO
19h 15m1 stop
Lufthansa Logo
2:00 pm - 11:35 pmSFO-KEF
26h 35m2 stops
$995Lufthansa
Find Deal
Sun, Sep 21 - Tue, Oct 7

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
Sep 22
KEF5:10 pmReykjavik Keflavik Intl
30h 20m
1 stop
SFO4:30 pmSan Francisco
Oct 7
SFO7:40 pmSan Francisco
30h 50m
1 stop
KEF9:30 amReykjavik Keflavik Intl
$589
Find similar
Scandinavian Airlines
Sep 8
KEF5:10 pmReykjavik Keflavik Intl
30h 20m
1 stop
SFO4:30 pmSan Francisco
Sep 23
SFO7:40 pmSan Francisco
37h 40m
1 stop
KEF4:20 pmReykjavik Keflavik Intl
$597
Find similar
Scandinavian Airlines
Oct 23
KEF5:10 pmReykjavik Keflavik Intl
30h 20m
1 stop
SFO4:30 pmSan Francisco
Nov 2
SFO4:40 pmSan Francisco
34h 05m
1 stop
KEF10:45 amReykjavik Keflavik Intl
$749
Find similar

United Airlines flights from Reykjavik Keflavik Intl Airport to San Francisco

Our best United Airlines deals on Reykjavik Keflavik Intl Airport to San Francisco flight tickets
United Airlines
Sep 12
KEF9:30 amReykjavik Keflavik Intl
17h 21m
1 stop
SFO7:51 pmSan Francisco
Sep 27
SFO10:40 amSan Francisco
14h 30m
2 stops
KEF8:10 amReykjavik Keflavik Intl
$859
Find similar
United Airlines
Sep 8
KEF12:00 pmReykjavik Keflavik Intl
15h 10m
2 stops
SFO8:10 pmSan Francisco
Sep 23
SFO10:35 amSan Francisco
14h 35m
2 stops
KEF8:10 amReykjavik Keflavik Intl
$865
Find similar
United Airlines
Aug 10
KEF12:00 pmReykjavik Keflavik Intl
14h 36m
1 stop
SFO7:36 pmSan Francisco
Aug 23
SFO11:40 amSan Francisco
13h 30m
1 stop
KEF8:10 amReykjavik Keflavik Intl
$921
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 August 2, 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 9/22

9:35 am-5:14 pm

1 stop14h 39m

San Francisco

Tue 10/7

10:15 am-8:15 am

2 stops39h 00m

$564

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 9/15

9:35 am-5:14 pm

1 stop14h 39m

San Francisco

Mon 9/22

7:30 am-8:15 am

1 stop17h 45m

$578

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 9/22

5:10 pm-4:30 pm

1 stop30h 20m

San Francisco

Tue 10/7

7:40 pm-9:30 am

1 stop30h 50m

$589

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 9/8

5:10 pm-4:30 pm

1 stop30h 20m

San Francisco

Tue 9/23

7:40 pm-4:20 pm

1 stop37h 40m

$597

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 9/12

9:30 am-7:51 pm

1 stop17h 21m

San Francisco

Sat 9/27

10:40 am-8:10 am

2 stops14h 30m

$859

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 9/8

12:00 pm-8:10 pm

2 stops15h 10m

San Francisco

Tue 9/23

10:35 am-8:10 am

2 stops14h 35m

$865

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Fri 1/16

4:50 pm-12:54 am

1 stop16h 04m

San Francisco

Tue 1/20

7:55 am-6:15 am

1 stop14h 20m

$880

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 11/11

5:00 pm-12:28 am

1 stop15h 28m

San Francisco

Sun 11/16

8:00 am-6:15 am

1 stop14h 15m

$887

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Wed 10/22

12:25 am-7:55 pm

1 stop26h 30m

San Francisco

Sun 11/2

9:40 pm-3:15 pm

2 stops33h 35m

$947

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Sun 9/21

12:25 am-12:40 pm

1 stop19h 15m

San Francisco

Tue 10/7

2:00 pm-11:35 pm

2 stops26h 35m

$995

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

Best Price Found

$313

Fastest flight time

13h 15m

Direct flights

None

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from Reykjavik Keflavik Intl Airport in the past 72 hours is $313. The best round-trip flight deal from Reykjavik Keflavik Intl Airport to San Francisco found on momondo in the last 72 hours is $564.
The fastest flight from Reykjavik Keflavik Intl Airport to San Francisco takes 13h 15m
There are no direct flights from Reykjavik Keflavik Intl Airport to San Francisco. Popular non-direct route for this connection is Reykjavik Keflavik Intl Airport - San Francisco Airport.
There is 1 airport near San Francisco: San Francisco (SFO)
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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 39m 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
Calistoga
Hayward
Bodega Bay
Sonoma
Roseville
Santa Clara
Big Sur
Daly City
Berkeley
Walnut Creek
Fremont
Half Moon Bay
South San Francisco
Redwood City
Vallejo
Sunnyvale
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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