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Keflavik Intl

$369+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
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 octubre 30, 2025.

Most accurate provider

oojo
3 stars

Most trusted provider

oojo
3 stars

Round-trip from

$521
(Kiwi.com)

One-way from

$369
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$995
Provider with most accurate pricing for San Francisco-Reykjavik (REK) flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Reykjavik (REK) flights.
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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. 12% potential increase in price ($141 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 30, 2025.

This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/277:25 pmSFO - KEF
1 stop33h 55mSWISS
sáb. 12/62:20 pmKEF - SFO
1 stop34h 10mSWISS
Deal found 10/28$522
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
jue. 11/277:25 pmSFO - KEF
1 stop33h 55mSWISS
sáb. 12/132:20 pmKEF - SFO
1 stop34h 10mSWISS
Deal found 10/29$524
This Mytrip deal was found by Cheapflights users on 10/30. 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.
jue. 12/47:25 pmSFO - KEF
1 stop33h 55mMultiple Airlines
mar. 12/93:20 pmKEF - SFO
1 stop29h 20mMultiple Airlines
Deal found 10/30$558
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/272:40 pmSFO - KEF
2 stops38h 40mLufthansa
sáb. 12/62:20 pmKEF - SFO
2 stops37h 15mLufthansa
Deal found 10/28$596
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/272:40 pmSFO - KEF
2 stops38h 40mLufthansa
vie. 12/53:25 pmKEF - SFO
2 stops36h 10mLufthansa
Deal found 10/28$616
This Gurufare deal was found by Cheapflights users on 10/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/277:25 pmSFO - KEF
1 stop33h 55mMultiple Airlines
mar. 12/23:20 pmKEF - SFO
1 stop29h 20mMultiple Airlines
Deal found 10/28$620

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 octubre 30, 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

jue. 12/4

7:25 pm-1:20 pm

1 stop33h 55m

Reykjavik Keflavik Intl

mar. 12/9

3:20 pm-5:28 pm

2 stops34h 08m

$586

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

mar. 1/13

8:40 pm-9:15 am

2 stops28h 35m

Reykjavik Keflavik Intl

mié. 1/21

9:45 am-12:47 am

2 stops23h 02m

$642

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

mar. 11/25

9:40 pm-2:15 pm

1 stop32h 35m

Reykjavik Keflavik Intl

vie. 12/5

3:25 pm-7:35 pm

2 stops36h 10m

$674

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

mar. 1/13

2:40 pm-2:15 pm

2 stops39h 35m

Reykjavik Keflavik Intl

dom. 1/18

3:20 pm-12:40 pm

1 stop29h 20m

$684

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

lun. 12/1

1:35 pm-2:20 pm

1 stop16h 45m

Reykjavik Keflavik Intl

sáb. 12/13

2:20 pm-4:30 pm

1 stop34h 10m

$702

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

mié. 12/3

12:25 pm-11:55 pm

2 stops27h 30m

Reykjavik Keflavik Intl

dom. 12/7

11:15 am-2:35 pm

2 stops35h 20m

$703

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

lun. 12/1

11:15 am-10:50 am

2 stops39h 35m

Reykjavik Keflavik Intl

lun. 12/8

10:00 am-12:11 am

2 stops22h 11m

$727

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

lun. 11/17

7:00 am-10:45 am

2 stops19h 45m

Reykjavik Keflavik Intl

lun. 11/24

7:50 am-10:44 pm

2 stops22h 54m

$729

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

lun. 12/8

5:30 pm-9:15 am

2 stops31h 45m

Reykjavik Keflavik Intl

lun. 12/15

9:45 am-3:00 pm

2 stops37h 15m

$731

San FranciscoReykjavik

SFO - KEF

SFOKEF

San Francisco

jue. 11/6

7:25 pm-1:20 pm

1 stop33h 55m

Reykjavik Keflavik Intl

mar. 11/11

3:20 pm-5:28 pm

2 stops34h 08m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 17 results
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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 October 24, 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, April is the cheapest month in which you can book a flight from Fremont to Reykjavik Keflavik Intl Airport (average of $167). Flying from Fremont to Reykjavik Keflavik Intl Airport in January is currently the most expensive (average of $853). 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 octubre 30, 2025.

It’s optimal to fly from Fremont to Reykjavik Keflavik Intl Airport in the morning. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at noon.

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 December 16, 2024.

Travelers seeking maximum savings on their Fremont to Reykjavik Keflavik Intl Airport flight should consider departing on Sunday mornings when fares are most often at their lowest. Friday 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 octubre 30, 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
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

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
11,214 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

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
7.9
Good
7,993 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

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
8,998 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

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
3,149 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

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
7.1
Good
562 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

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 35m. Fremont and Reykjavik Keflavik Intl Airport are separated by a distance of 4190 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, April is the cheapest month in which you can book a flight from Fremont to Reykjavik Keflavik Intl Airport (average of $167). Flying from Fremont to Reykjavik Keflavik Intl Airport in January is currently the most expensive (average of $853). 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$537Average$713FlexibilityNo cancel feeOn-time60%
DeltaCheapest$556Average$793FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$646Average$1,152FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$653Average$755FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$655Average$830FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$684Average$921FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$700Average$823FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$736Average$1,109FlexibilityNo cancel feeOn-time76%

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