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Cheap flights from Reykjavik Keflavik Intl Airport to San Francisco from $356

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 8/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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.
WestJet Logo
9:00 am - 4:40 pm
KEF
-
SFO
14h 40m
1 stop
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$660WestJet
Thu, Aug 20 - Wed, Sep 2
WestJet Logo
9:00 am - 4:40 pm
KEF
-
SFO
14h 40m
1 stop
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$675WestJet
Thu, Aug 20 - Wed, Sep 2
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
$705WestJet
Thu, Sep 10 - Wed, Sep 16
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
$706WestJet
Tue, Sep 15 - Wed, Sep 16
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
$718WestJet
Thu, Sep 10 - Sun, Sep 20
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
$719WestJet
Tue, Sep 15 - Fri, Sep 18
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
$720WestJet
Thu, Sep 10 - Mon, Sep 14
Multiple Airlines Logo
9:00 am - 6:22 pm
KEF
-
SFO
16h 22m
2 stops
Multiple Airlines Logo
1:00 pm - 7:40 am
SFO
-
KEF
11h 40m
1 stop
$768Multiple Airlines
Tue, Sep 15 - Wed, Sep 16
Multiple Airlines Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
Multiple Airlines Logo
6:45 pm - 7:40 am
SFO
-
KEF
29h 55m
2 stops
$773Multiple Airlines
Thu, Aug 20 - Wed, Sep 2
Multiple Airlines Logo
9:00 am - 6:00 pm
KEF
-
SFO
40h 00m
2 stops
Multiple Airlines Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$776Multiple Airlines
Tue, Aug 11 - Tue, Aug 18

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WestJet flights from Reykjavik Keflavik Intl Airport to San Francisco

Our best WestJet deals on Reykjavik Keflavik Intl Airport to San Francisco flight tickets
WestJet
Aug 20
KEF9:00 amReykjavik Keflavik Intl
14h 40m
1 stop
SFO4:40 pmSan Francisco
Sep 2
SFO6:00 amSan Francisco
18h 40m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$660
WestJet
Aug 20
KEF9:00 amReykjavik Keflavik Intl
14h 40m
1 stop
SFO4:40 pmSan Francisco
Sep 2
SFO6:00 amSan Francisco
18h 40m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$675
WestJet
Sep 10
KEF9:00 amReykjavik Keflavik Intl
19h 55m
1 stop
SFO9:55 pmSan Francisco
Sep 16
SFO1:00 pmSan Francisco
11h 40m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$705

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
Sep 12
KEF10:40 amReykjavik Keflavik Intl
12h 16m
1 stop
SFO3:56 pmSan Francisco
Sep 17
SFO9:03 amSan Francisco
17h 22m
1 stop
KEF9:25 amReykjavik Keflavik Intl
$847
Icelandair
Sep 11
KEF4:50 pmReykjavik Keflavik Intl
13h 38m
1 stop
SFO11:28 pmSan Francisco
Sep 16
SFO3:26 pmSan Francisco
10h 59m
1 stop
KEF9:25 amReykjavik Keflavik Intl
$869
Icelandair
Sep 9
KEF10:40 amReykjavik Keflavik Intl
12h 16m
1 stop
SFO3:56 pmSan Francisco
Sep 14
SFO3:26 pmSan Francisco
10h 59m
1 stop
KEF9:25 amReykjavik Keflavik Intl
$900

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 July 7, 2026.
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

Cheapest round-trip

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 8/20

9:00 am-4:40 pm

1 stop14h 40m

San Francisco

Wed 9/2

6:00 am-7:40 am

1 stop18h 40m

$660

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 8/20

9:00 am-4:40 pm

1 stop14h 40m

San Francisco

Wed 9/2

6:00 am-7:40 am

1 stop18h 40m

$675

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 9/10

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Wed 9/16

1:00 pm-7:40 am

1 stop11h 40m

$705

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 9/15

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Wed 9/16

1:00 pm-7:40 am

1 stop11h 40m

$706

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 9/10

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Sun 9/20

1:00 pm-7:40 am

1 stop11h 40m

$718

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 9/15

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Fri 9/18

1:00 pm-7:40 am

1 stop11h 40m

$719

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 9/10

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Mon 9/14

1:00 pm-7:40 am

1 stop11h 40m

$720
Quickest round-trip

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 9/15

9:00 am-6:22 pm

2 stops16h 22m

San Francisco

Wed 9/16

1:00 pm-7:40 am

1 stop11h 40m

$768

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 8/20

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Wed 9/2

6:45 pm-7:40 am

2 stops29h 55m

$773

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 8/11

9:00 am-6:00 pm

2 stops40h 00m

San Francisco

Tue 8/18

6:00 am-7:40 am

1 stop18h 40m

$776

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 airline that flies from Reykjavik Keflavik Intl to San Francisco?

WestJet and Icelandair are the most popular carriers operating from Reykjavik Keflavik Intl to San Francisco

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

14h 12m

Direct flights

None
The fastest flight from Reykjavik Keflavik Intl Airport to San Francisco takes 14h 12m
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.
Search flight deals

Frequently asked questions about flying from Reykjavik Keflavik Intl Airport to San Francisco

  • How far is Reykjavik Keflavik Intl to San Francisco by plane?

    San Francisco is 4181.1 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 many operators does momondo search for flights from Reykjavik Keflavik Intl Airport to San Francisco Airport?

  • 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.

  • What is the most popular airline from Reykjavik Keflavik Intl Airport to San Francisco?

Best airlines flying from Reykjavik Keflavik Intl Airport to San Francisco

Compare and see reviews for airlines that fly from Reykjavik Keflavik Intl Airport to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $883Free CancellationRating
7.0
702 reviews
Search Icelandair flights

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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.

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

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