$351+ Cheap flights from San Francisco (SFO) 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
Apr 12 — Apr 191
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Keflavik Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Keflavik Intl
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Best
Last-minute
One-way
Cheapest flights from San Francisco to Keflavik IntlExplore the most affordable flight options available from San Francisco to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
Explore the most affordable flight options available from San Francisco to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 3/8. 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.
Tue 8/254:45 pm
SFO
- KEF
1 stop24h 50m
Scandinavian Airlines
Mon 9/710:30 am
KEF
- SFO
1 stop35h 10m
Scandinavian Airlines
Deal found 3/8![Scandinavian Airlines logo]()
$779
This oojo deal was found by Cheapflights users on 3/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:45 pm
SFO
- KEF
2 stops34h 40m
Scandinavian Airlines
Thu 9/105:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/10![Scandinavian Airlines logo]()
$782
This oojo deal was found by Cheapflights users on 3/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/224:45 pm
SFO
- KEF
1 stop24h 50m
Scandinavian Airlines
Wed 9/25:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/10![Scandinavian Airlines logo]()
$785
This Mytrip deal was found by Cheapflights users on 3/12. 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.
Sun 8/234:45 pm
SFO
- KEF
1 stop33h 55m
Scandinavian Airlines
Mon 8/315:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/12![Scandinavian Airlines logo]()
$786
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Tue 5/127:00 am
SFO
- KEF
1 stop16h 20m
Icelandair
Thu 5/215:10 pm
KEF
- SFO
1 stop14h 56m
Icelandair
Deal found 3/11![Icelandair logo]()
$787
This oojo deal was found by Cheapflights users on 3/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:45 pm
SFO
- KEF
1 stop33h 55m
Scandinavian Airlines
Fri 9/117:55 am
KEF
- SFO
2 stops37h 45m
Scandinavian Airlines
Deal found 3/9![Scandinavian Airlines logo]()
$788
This Scandinavian Airlines deal was found by Cheapflights users on 3/8. 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.
Fri 8/284:45 pm
SFO
- KEF
1 stop16h 35m
Scandinavian Airlines
Wed 9/95:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/8![Scandinavian Airlines logo]()
$789
This FlightHub deal was found by Cheapflights users on 3/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:45 pm
SFO
- KEF
1 stop16h 30m
Scandinavian Airlines
Mon 9/145:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/10![Scandinavian Airlines logo]()
$790
This oojo deal was found by Cheapflights users on 3/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:45 pm
SFO
- KEF
2 stops34h 40m
Scandinavian Airlines
Sat 4/255:10 pm
KEF
- SFO
1 stop28h 30m
Scandinavian Airlines
Deal found 3/10![Scandinavian Airlines logo]()
$793
This oojo deal was found by Cheapflights users on 3/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:00 am
SFO
- KEF
1 stop17h 20m
Icelandair
Mon 7/137:55 pm
KEF
- SFO
1 stop35h 36m
Icelandair
Deal found 3/10![Icelandair logo]()
$795
This FlightHub deal was found by Cheapflights users on 3/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:00 am
SFO
- KEF
1 stop19h 10m
Icelandair
Sat 9/127:55 pm
KEF
- SFO
1 stop20h 52m
Icelandair
Deal found 3/10![Icelandair logo]()
$797
Best flights from San Francisco to Keflavik IntlDiscover carefully curated flight deals from San Francisco to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
Discover carefully curated flight deals from San Francisco to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 3/8. 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.
Fri 8/284:45 pm
SFO
- KEF
1 stop16h 35m
Scandinavian Airlines
Thu 9/105:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/8![Scandinavian Airlines logo]()
$789
This Scandinavian Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 9/24:45 pm
SFO
- KEF
2 stops31h 20m
Multiple Airlines
Mon 9/217:50 am
KEF
- SFO
2 stops24h 34m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$895
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:00 am
SFO
- KEF
1 stop20h 00m
Alaska Airlines
Sun 6/2812:45 pm
KEF
- SFO
1 stop18h 14m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$954
This Scandinavian Airlines deal was found by Cheapflights users on 3/9. 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.
Sun 4/194:45 pm
SFO
- KEF
1 stop33h 55m
Scandinavian Airlines
Thu 4/235:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/9![Scandinavian Airlines logo]()
$814
This Scandinavian Airlines deal was found by Cheapflights users on 3/8. 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.
Fri 8/284:45 pm
SFO
- KEF
1 stop16h 35m
Scandinavian Airlines
Fri 9/1110:30 am
KEF
- SFO
1 stop35h 10m
Scandinavian Airlines
Deal found 3/8![Scandinavian Airlines logo]()
$859
This Scandinavian Airlines deal was found by Cheapflights users on 3/13. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:45 pm
SFO
- KEF
2 stops34h 40m
Scandinavian Airlines
Fri 9/117:55 am
KEF
- SFO
2 stops37h 45m
Scandinavian Airlines
Deal found 3/13![Scandinavian Airlines logo]()
$929
Last-minute flights from San Francisco to Keflavik IntlDiscover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated March 13, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated March 13, 2026 and is based on user searches.
This Scandinavian Airlines deal was found by Cheapflights users on 3/8. 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.
Mon 3/235:40 pm
SFO
- KEF
1 stop16h 10m
Scandinavian Airlines
Wed 4/15:35 pm
KEF
- SFO
1 stop28h 05m
Scandinavian Airlines
Deal found 3/8![Scandinavian Airlines logo]()
$803
This oojo deal was found by Cheapflights users on 3/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/304:45 pm
SFO
- KEF
2 stops17h 50m
Scandinavian Airlines
Wed 4/811:15 am
KEF
- SFO
2 stops34h 25m
Scandinavian Airlines
Deal found 3/9![Scandinavian Airlines logo]()
$809
This oojo deal was found by Cheapflights users on 3/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/124:45 pm
SFO
- KEF
1 stop33h 55m
Scandinavian Airlines
Fri 4/175:35 pm
KEF
- SFO
1 stop28h 05m
Scandinavian Airlines
Deal found 3/10![Scandinavian Airlines logo]()
$820
This FlightHub deal was found by Cheapflights users on 3/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:15 pm
SFO
- KEF
1 stop12h 55m
Multiple Airlines
Fri 4/177:50 pm
KEF
- SFO
1 stop20h 33m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$806
This oojo deal was found by Cheapflights users on 3/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:00 am
SFO
- KEF
1 stop16h 10m
Icelandair
Fri 4/174:50 pm
KEF
- SFO
1 stop13h 39m
Icelandair
Deal found 3/9![Icelandair logo]()
$821
This KAYAK deal was found by Cheapflights users on 3/9. 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.
Wed 4/1511:00 am
SFO
- KEF
2 stops39h 40m
Scandinavian Airlines
Sun 4/195:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/9![Scandinavian Airlines logo]()
$779
This oojo deal was found by Cheapflights users on 3/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:45 pm
SFO
- KEF
2 stops34h 40m
Scandinavian Airlines
Sat 4/255:10 pm
KEF
- SFO
1 stop28h 30m
Scandinavian Airlines
Deal found 3/10![Scandinavian Airlines logo]()
$793
This Scandinavian Airlines deal was found by Cheapflights users on 3/9. 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.
Sun 4/194:45 pm
SFO
- KEF
1 stop33h 55m
Scandinavian Airlines
Thu 4/235:05 pm
KEF
- SFO
1 stop28h 35m
Scandinavian Airlines
Deal found 3/9![Scandinavian Airlines logo]()
$814
One-way flights from San Francisco to Keflavik IntlSearch for one-way flight options from San Francisco to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
Search for one-way flight options from San Francisco to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/307:40 pm
SFO
- KEF
2 stops40h 05m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/225:31 pm
SFO
- KEF
3 stops41h 54m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Tue 8/115:40 pm
SFO
- KEF
2 stops31h 25m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Mon 6/16:45 pm
SFO
- KEF
2 stops53h 55m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Mon 8/108:20 pm
SFO
- KEF
2 stops44h 10m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:05 pm
SFO
- KEF
2 stops27h 45m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$450
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Mon 5/186:00 am
SFO
- KEF
3 stops43h 20m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$453
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Fri 8/146:45 pm
SFO
- KEF
2 stops29h 55m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Sat 7/117:35 pm
SFO
- KEF
2 stops39h 05m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$457
Find flight deals from San Francisco to Keflavik Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $779 (Scandinavian Airlines) |
One-way from | $351 (Kiwi.com) |
Popular in | June |
Cheapest in | December |
Average price | $1,033 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 March 13, 2026.
Use the filters below to find and compare flights from San Francisco to Reykjavik Keflavik Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 8/28
4:45 pm-4:20 pm
1 stop16h 35m
Reykjavik Keflavik Intl
Thu 9/10
5:05 pm-2:40 pm
1 stop28h 35m
$789
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sun 4/19
4:45 pm-9:40 am
1 stop33h 55m
Reykjavik Keflavik Intl
Thu 4/23
5:05 pm-2:40 pm
1 stop28h 35m
$814
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 8/28
4:45 pm-4:20 pm
1 stop16h 35m
Reykjavik Keflavik Intl
Fri 9/11
10:30 am-2:40 pm
1 stop35h 10m
$859
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Wed 9/2
4:45 pm-7:05 am
2 stops31h 20m
Reykjavik Keflavik Intl
Mon 9/21
7:50 am-1:24 am
2 stops24h 34m
$895
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Tue 9/1
4:45 pm-10:25 am
2 stops34h 40m
Reykjavik Keflavik Intl
Fri 9/11
7:55 am-2:40 pm
2 stops37h 45m
$929
Quickest round-trip
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Mon 6/15
6:00 am-9:00 am
1 stop20h 00m
Reykjavik Keflavik Intl
Sun 6/28
12:45 pm-11:59 pm
1 stop18h 14m
$954
Cheapest one-way
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Mon 6/8
6:45 pm-7:40 am
2 stops53h 55m
$476
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Tue 8/18
8:30 am-11:30 pm
3 stops32h 00m
$479
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Tue 8/18
4:45 pm-12:35 am
1 stop24h 50m
$525
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Thu 7/16
6:00 am-7:45 am
2 stops42h 45m
$526
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Keflavik Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Keflavik Intl in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Keflavik Intl
Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from San Francisco with our price prediction graph.
SFO-KEF
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 San Francisco to Reykjavik Keflavik Intl Airport
How far ahead should I book a flight from San Francisco to Reykjavik Keflavik Intl Airport?
Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Keflavik Intl. Price data was last updated on March 6, 2026.
Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco 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 San Francisco to Reykjavik Keflavik Intl Airport?
Currently, June is the cheapest month in which you can book a flight from San Francisco to Reykjavik Keflavik Intl Airport (average of $211). Flying from San Francisco to Reykjavik Keflavik Intl Airport in February is currently the most expensive (average of $852). 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.
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 March 13, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines from San Francisco to Reykjavik Keflavik Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Overall
8.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Top 8 airlines flying from San Francisco to Keflavik Intl
Discover the top 8 airlines that operate flights from San Francisco 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 March 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$212 | Average$891 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$537 | Average$682 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$642 | Average$830 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$683 | Average$905 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$698 | Average$765 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$699 | Average$808 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$774 | Average$1,055 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$891 | Average$1,098 | FlexibilityNo cancel fee | On-time75% |