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Cheap flights from Reykjavik Keflavik Intl Airport to San Francisco from $327

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 9/7. 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.
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$717WestJet
Mon, Jun 22 - Sun, Jul 5
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$733WestJet
Mon, Jun 29 - Sun, Jul 12
Multiple Airlines Logo
9:00 am - 4:21 pm
KEF
-
SFO
38h 21m
2 stops
Multiple Airlines Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$743Multiple Airlines
Mon, Jun 22 - Sun, Jul 5
Multiple Airlines Logo
9:00 am - 6:00 pm
KEF
-
SFO
16h 00m
2 stops
Multiple Airlines Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$793Multiple Airlines
Mon, Jun 29 - Sun, Jul 12
Multiple Airlines Logo
9:00 am - 10:20 am
KEF
-
SFO
32h 20m
2 stops
Multiple Airlines Logo
6:45 pm - 7:40 am
SFO
-
KEF
29h 55m
3 stops
$801Multiple Airlines
Tue, Jun 16 - Mon, Jun 22
Multiple Airlines Logo
9:00 am - 10:20 am
KEF
-
SFO
32h 20m
2 stops
Multiple Airlines Logo
6:45 pm - 7:40 am
SFO
-
KEF
29h 55m
2 stops
$821Multiple Airlines
Tue, Jun 16 - Mon, Jun 22
Multiple Airlines Logo
9:00 am - 12:00 pm
KEF
-
SFO
34h 00m
1 stop
Multiple Airlines Logo
6:45 pm - 7:40 am
SFO
-
KEF
29h 55m
2 stops
$824Multiple Airlines
Tue, Jun 16 - Mon, Jun 22
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
6:00 am - 7:40 am
SFO
-
KEF
18h 40m
1 stop
$838WestJet
Tue, Jun 16 - Mon, Jun 22
Multiple Airlines Logo
9:00 am - 11:06 pm
KEF
-
SFO
21h 06m
3 stops
Multiple Airlines Logo
6:45 pm - 7:40 am
SFO
-
KEF
29h 55m
3 stops
$841Multiple Airlines
Tue, Jun 16 - Mon, Jun 22
Multiple Airlines Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
Multiple Airlines Logo
7:30 pm - 7:40 am
SFO
-
KEF
29h 10m
3 stops
$849Multiple Airlines
Mon, Jun 29 - Sun, Jul 12

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
Jun 22
KEF9:00 amReykjavik Keflavik Intl
19h 55m
1 stop
SFO9:55 pmSan Francisco
Jul 5
SFO6:00 amSan Francisco
18h 40m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$717
WestJet
Jun 29
KEF9:00 amReykjavik Keflavik Intl
19h 55m
1 stop
SFO9:55 pmSan Francisco
Jul 12
SFO6:00 amSan Francisco
18h 40m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$733
WestJet
Jun 16
KEF9:00 amReykjavik Keflavik Intl
19h 55m
1 stop
SFO9:55 pmSan Francisco
Jun 22
SFO6:00 amSan Francisco
18h 40m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$838

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 May 20, 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

Mon 6/22

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Sun 7/5

6:00 am-7:40 am

1 stop18h 40m

$717

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 6/29

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Sun 7/12

6:00 am-7:40 am

1 stop18h 40m

$733

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 6/22

9:00 am-4:21 pm

2 stops38h 21m

San Francisco

Sun 7/5

6:00 am-7:40 am

1 stop18h 40m

$743
Quickest round-trip

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 6/29

9:00 am-6:00 pm

2 stops16h 00m

San Francisco

Sun 7/12

6:00 am-7:40 am

1 stop18h 40m

$793

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 6/16

9:00 am-10:20 am

2 stops32h 20m

San Francisco

Mon 6/22

6:45 pm-7:40 am

3 stops29h 55m

$801

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 6/16

9:00 am-10:20 am

2 stops32h 20m

San Francisco

Mon 6/22

6:45 pm-7:40 am

2 stops29h 55m

$821

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 6/16

9:00 am-12:00 pm

1 stop34h 00m

San Francisco

Mon 6/22

6:45 pm-7:40 am

2 stops29h 55m

$824

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 6/16

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Mon 6/22

6:00 am-7:40 am

1 stop18h 40m

$838

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Tue 6/16

9:00 am-11:06 pm

3 stops21h 06m

San Francisco

Mon 6/22

6:45 pm-7:40 am

3 stops29h 55m

$841

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 6/29

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Sun 7/12

7:30 pm-7:40 am

3 stops29h 10m

$849

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, Icelandair, and Finnair 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

31h 20m

Direct flights

None
The fastest flight from Reykjavik Keflavik Intl Airport to San Francisco takes 31h 20m
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 31h 20m 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
656 reviews
Search Icelandair flights

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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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