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Keflavik Intl

$247+ Cheap flights from Fremont, CA to Keflavik Intl (KEF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Fremont to Reykjavik Keflavik Intl are usually found in August or February, booked 89 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Fremont to Keflavik Intl

Keep the following information in mind while searching for Fremont to Keflavik Intl flight deals. Data was last updated September 16, 2025.

Round-trip from

$642
(Kiwi.com)

One-way from

$247
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$919
From Fremont to Reykjavik Keflavik Intl
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One-way flight from Fremont to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 13% potential increase in price ($151 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Fremont to Keflavik Intl

Cheapest flights from Fremont to Keflavik Intl
Explore the most affordable flight options available from Fremont to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:05 pmSFO - KEF
1 stop20h 05mLufthansa
Wed 10/2212:25 amKEF - SFO
1 stop19h 15mLufthansa
Deal found 9/15$642
This CrystalTravel deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/142:40 pmSFO - KEF
1 stop25h 55mLufthansa
Mon 10/2012:25 amKEF - SFO
1 stop19h 15mLufthansa
Deal found 9/14$645
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2311:50 amSFO - KEF
1 stop11h 30mDelta
Tue 10/711:25 amKEF - SFO
1 stop18h 58mDelta
Deal found 9/15$648
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:05 amSFO - KEF
2 stops32h 50mScandinavian Airlines
Wed 12/311:30 amKEF - SFO
1 stop35h 05mScandinavian Airlines
Deal found 9/14$652
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:05 amSFO - KEF
2 stops32h 50mScandinavian Airlines
Thu 12/411:30 amKEF - SFO
2 stops35h 05mScandinavian Airlines
Deal found 9/14$655
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:00 amSFO - KEF
1 stop14h 15mMultiple Airlines
Thu 11/65:00 pmKEF - SFO
1 stop14h 50mMultiple Airlines
Deal found 9/15$656
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:15 pmSFO - KEF
1 stop13h 00mMultiple Airlines
Tue 10/74:10 pmKEF - SFO
1 stop31h 00mMultiple Airlines
Deal found 9/14$660
This KLM deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/235:50 amSFO - KEF
1 stop17h 30mMultiple Airlines
Tue 9/3011:25 amKEF - SFO
1 stop14h 27mMultiple Airlines
Deal found 9/13$661
This United deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/202:20 pmSFO - KEF
1 stop17h 55mMultiple Airlines
Mon 11/32:20 pmKEF - SFO
1 stop34h 10mMultiple Airlines
Deal found 9/15$664
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:10 amSFO - KEF
3 stops18h 05mMultiple Airlines
Thu 10/99:35 amKEF - SFO
2 stops20h 33mMultiple Airlines
Deal found 9/16$667

Cheapflights Fare Finder

 
Customize your flight search to find flights from Fremont to Keflavik Intl 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, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Fremont to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fremont

Fly to

Keflavik Intl

Route

Depart

Return

Price

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Thu 1/8

8:35 am-2:20 pm

2 stops21h 45m

Reykjavik Keflavik Intl

Tue 1/13

3:20 pm-3:55 pm

1 stop32h 35m

$663

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Wed 10/15

9:05 pm-12:10 am

1 stop20h 05m

Reykjavik Keflavik Intl

Tue 10/21

4:10 pm-4:10 pm

1 stop31h 00m

$671

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Thu 10/30

12:35 pm-11:55 pm

2 stops28h 20m

Reykjavik Keflavik Intl

Thu 11/6

11:30 am-2:35 pm

2 stops35h 05m

$673

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Mon 11/17

8:55 pm-11:55 pm

2 stops43h 00m

Reykjavik Keflavik Intl

Wed 11/26

11:30 am-2:35 pm

1 stop35h 05m

$693

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sun 2/22

4:40 pm-10:45 am

1 stop34h 05m

Reykjavik Keflavik Intl

Sat 2/28

11:25 am-2:35 pm

1 stop35h 10m

$699

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sun 11/30

4:40 pm-10:45 am

1 stop34h 05m

Reykjavik Keflavik Intl

Thu 12/4

11:30 am-2:35 pm

1 stop35h 05m

$702

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Mon 10/13

5:55 am-6:20 am

1 stop17h 25m

Reykjavik Keflavik Intl

Mon 10/20

11:25 am-1:29 am

1 stop21h 04m

$703

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sat 11/29

4:40 pm-12:15 pm

2 stops35h 35m

Reykjavik Keflavik Intl

Wed 12/3

11:30 am-2:35 pm

1 stop35h 05m

$705

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Tue 11/4

7:00 am-3:25 pm

2 stops24h 25m

Reykjavik Keflavik Intl

Thu 11/13

11:30 am-2:35 pm

2 stops35h 05m

$713

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

Sun 11/9

7:00 am-3:25 pm

2 stops24h 25m

Reykjavik Keflavik Intl

Sun 11/16

11:15 am-2:35 pm

2 stops35h 20m

$713

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
1
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Best time to book a flight from Fremont to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Fremont with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Fremont to Reykjavik Keflavik Intl Airport

How far ahead should I book a flight from Fremont to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Fremont to Keflavik Intl. Price data was last updated on September 12, 2025.

Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Fremont to Reykjavik Keflavik Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Fremont to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Fremont to Reykjavik Keflavik Intl Airport (average of $328). Flying from Fremont to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $656). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from FR8 to KEF?

Find hourly flight availability from Fremont to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Fremont to Reykjavik Keflavik Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Fremont to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Fremont to Keflavik Intl. Price data was last updated on September 15, 2024.

Travelers seeking maximum savings on their Fremont to Reykjavik Keflavik Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Fremont to Reykjavik Keflavik Intl Airport, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,954 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,929 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
WestJet
7.2
Good
3,093 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Icelandair
7.0
Good
544 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Fremont to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Fremont to Reykjavik Keflavik Intl Airport?

    Departing from Fremont to Reykjavik Keflavik Intl Airport will take you 28h 20m. Fremont and Reykjavik Keflavik Intl Airport are separated by a distance of 4190 mi.

  • Can I find deals for flights from Fremont to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on Fremont to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Fremont to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Fremont to Keflavik Intl.

  • Can I find deals for business class flights from Fremont to Keflavik Intl?

    Yes. Cheapflights offers flight deals from Fremont to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Fremont to Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Fremont to Reykjavik Keflavik Intl Airport (average of $328). Flying from Fremont to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $656). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Top 8 airlines flying from Fremont to Keflavik Intl

Discover the top 8 airlines that operate flights from Fremont to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$537Average$713FlexibilityNo cancel feeOn-time60%
DeltaCheapest$556Average$803FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$653Average$756FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$655Average$830FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$694Average$929FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$727Average$829FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$736Average$1,108FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$975Average$1,166FlexibilityNo cancel feeOn-time75%

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