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Cheap flights from Reykjavik Keflavik Intl Airport to San Francisco from $403

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 6/11. 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

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
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
$657WestJet
Thu, May 21 - Thu, Jun 4
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
$695WestJet
Thu, May 21 - Thu, Jun 4
WestJet Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
WestJet Logo
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
$725WestJet
Thu, May 21 - Thu, Jun 4
WestJet Logo
9:00 am - 12:00 pm
KEF
-
SFO
34h 00m
1 stop
WestJet Logo
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
$740WestJet
Mon, May 25 - Tue, Jun 9
Multiple Airlines Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
Multiple Airlines Logo
10:40 pm - 7:40 am
SFO
-
KEF
26h 00m
2 stops
$758Multiple Airlines
Thu, May 21 - Thu, Jun 4
Multiple Airlines Logo
9:00 am - 12:00 pm
KEF
-
SFO
34h 00m
1 stop
Multiple Airlines Logo
4:30 pm - 7:40 am
SFO
-
KEF
32h 10m
3 stops
$762Multiple Airlines
Mon, May 25 - Tue, Jun 9
Multiple Airlines Logo
9:00 am - 9:30 am
KEF
-
SFO
31h 30m
2 stops
Multiple Airlines Logo
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
$803Multiple Airlines
Mon, May 25 - Tue, Jun 9
Multiple Airlines Logo
9:00 am - 7:20 pm
KEF
-
SFO
17h 20m
2 stops
Multiple Airlines Logo
6:05 pm - 7:40 am
SFO
-
KEF
30h 35m
1 stop
$808Multiple Airlines
Thu, May 21 - Thu, Jun 4
Multiple Airlines Logo
9:00 am - 9:55 pm
KEF
-
SFO
19h 55m
1 stop
Multiple Airlines Logo
4:30 pm - 7:40 am
SFO
-
KEF
32h 10m
3 stops
$825Multiple Airlines
Thu, May 21 - Thu, Jun 4
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
$834Multiple Airlines
Thu, May 21 - Thu, Jun 4

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
May 21
KEF9:00 amReykjavik Keflavik Intl
19h 55m
1 stop
SFO9:55 pmSan Francisco
Jun 4
SFO6:05 pmSan Francisco
30h 35m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$657
WestJet
May 21
KEF9:00 amReykjavik Keflavik Intl
19h 55m
1 stop
SFO9:55 pmSan Francisco
Jun 4
SFO6:05 pmSan Francisco
30h 35m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$695
WestJet
May 21
KEF9:00 amReykjavik Keflavik Intl
19h 55m
1 stop
SFO9:55 pmSan Francisco
Jun 4
SFO6:05 pmSan Francisco
30h 35m
1 stop
KEF7:40 amReykjavik Keflavik Intl
$725

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
Apr 16
KEF7:50 pmReykjavik Keflavik Intl
20h 33m
1 stop
SFO9:23 amSan Francisco
Apr 29
SFO10:25 amSan Francisco
12h 50m
1 stop
KEF6:15 amReykjavik Keflavik Intl
$865
Icelandair
Apr 13
KEF4:50 pmReykjavik Keflavik Intl
13h 39m
1 stop
SFO11:29 pmSan Francisco
Apr 17
SFO10:50 pmSan Francisco
27h 05m
1 stop
KEF8:55 amReykjavik Keflavik Intl
$1,076
Icelandair
Jun 7
KEF5:00 pmReykjavik Keflavik Intl
23h 23m
1 stop
SFO9:23 amSan Francisco
Jun 13
SFO5:38 pmSan Francisco
13h 22m
1 stop
KEF2:00 pmReykjavik Keflavik Intl
$4,549

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 April 2, 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 5/21

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Thu 6/4

6:05 pm-7:40 am

1 stop30h 35m

$657

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 5/21

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Thu 6/4

6:05 pm-7:40 am

1 stop30h 35m

$695

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 5/21

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Thu 6/4

6:05 pm-7:40 am

1 stop30h 35m

$725

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 5/25

9:00 am-12:00 pm

1 stop34h 00m

San Francisco

Tue 6/9

6:05 pm-7:40 am

1 stop30h 35m

$740
Quickest round-trip

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 5/21

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Thu 6/4

10:40 pm-7:40 am

2 stops26h 00m

$758

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 5/25

9:00 am-12:00 pm

1 stop34h 00m

San Francisco

Tue 6/9

4:30 pm-7:40 am

3 stops32h 10m

$762

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Mon 5/25

9:00 am-9:30 am

2 stops31h 30m

San Francisco

Tue 6/9

6:05 pm-7:40 am

1 stop30h 35m

$803

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 5/21

9:00 am-7:20 pm

2 stops17h 20m

San Francisco

Thu 6/4

6:05 pm-7:40 am

1 stop30h 35m

$808

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 5/21

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Thu 6/4

4:30 pm-7:40 am

3 stops32h 10m

$825

ReykjavikSan Francisco

KEF - SFO

KEFSFO

Reykjavik Keflavik Intl

Thu 5/21

9:00 am-9:55 pm

1 stop19h 55m

San Francisco

Thu 6/4

7:30 pm-7:40 am

3 stops29h 10m

$834

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 is the most popular carrier 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

13h 39m

Direct flights

None
The fastest flight from Reykjavik Keflavik Intl Airport to San Francisco takes 13h 39m
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 13h 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 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
630 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.

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.

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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.

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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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