$386+ Cheap flights from San Francisco (SFO) to Keflavik Intl (KEF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
Oct 14 — Oct 211
Round-trip
1 adult, Economy
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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 September 14, 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 September 14, 2026.
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:45 pm -
2 stops34h 25m
Mon 11/2311:35 am -
1 stop35h 15m
Deal found 9/13![Scandinavian Airlines logo]()
$766
This oojo deal was found by Cheapflights users on 9/10. 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.
Wed 10/217:59 am -
1 stop17h 11m
Thu 10/295:00 pm -
1 stop14h 25m
Deal found 9/10![Icelandair logo]()
$767
This Justfly.com deal was found by Cheapflights users on 9/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:45 pm -
2 stops34h 25m
Tue 12/111:35 am -
1 stop35h 15m
Deal found 9/11![Scandinavian Airlines logo]()
$768
This Scandinavian Airlines deal was found by Cheapflights users on 9/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:45 pm -
2 stops34h 40m
Wed 10/2811:55 am -
2 stops34h 55m
Deal found 9/11![Scandinavian Airlines logo]()
$769
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:45 pm -
1 stop16h 35m
Wed 11/2511:35 am -
1 stop35h 15m
Deal found 9/13![Scandinavian Airlines logo]()
$770
This oojo deal was found by Cheapflights users on 9/10. 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.
Fri 9/252:39 pm -
1 stop34h 31m
Wed 10/75:10 pm -
1 stop14h 49m
Deal found 9/10![Icelandair logo]()
$772
This oojo deal was found by Cheapflights users on 9/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:44 pm -
1 stop29h 11m
Fri 10/235:10 pm -
1 stop14h 55m
Deal found 9/11![Icelandair logo]()
$773
This oojo deal was found by Cheapflights users on 9/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:45 pm -
1 stop16h 30m
Mon 10/1911:15 am -
2 stops34h 25m
Deal found 9/12![Scandinavian Airlines logo]()
$774
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
1 stop19h 55m
Tue 10/65:00 pm -
1 stop23h 20m
Deal found 9/10![Icelandair logo]()
$776
This oojo deal was found by Cheapflights users on 9/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:59 pm -
1 stop25h 56m
Mon 10/197:55 pm -
1 stop36h 10m
Deal found 9/12![Icelandair logo]()
$777
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:05 am -
1 stop14h 05m
Wed 11/255:00 pm -
1 stop15h 55m
Deal found 9/13![Multiple Airlines logo]()
$780
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 September 14, 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 September 14, 2026.
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.
Tue 10/134:45 pm -
1 stop17h 00m
Tue 10/2011:15 am -
2 stops34h 25m
Deal found 9/14![Scandinavian Airlines logo]()
$767
This Finnair deal was found by Cheapflights users on 9/9. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/115:25 pm -
2 stops31h 50m
Fri 1/1510:00 am -
2 stops22h 42m
Deal found 9/9![Finnair logo]()
$822
This Scandinavian Airlines deal was found by Cheapflights users on 9/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:45 pm -
2 stops34h 40m
Wed 10/2811:55 am -
2 stops34h 55m
Deal found 9/11![Scandinavian Airlines logo]()
$769
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1011:41 am -
2 stops37h 34m
Sat 1/166:00 pm -
2 stops38h 42m
Deal found 9/13![Finnair logo]()
$842
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:45 pm -
2 stops34h 40m
Mon 10/2611:55 am -
2 stops34h 55m
Deal found 9/13![Scandinavian Airlines logo]()
$771
This Scandinavian Airlines deal was found by Cheapflights users on 9/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:45 pm -
2 stops34h 25m
Wed 11/186:05 pm -
1 stop28h 45m
Deal found 9/10![Scandinavian Airlines logo]()
$783
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:45 pm -
2 stops34h 25m
Tue 11/2411:35 am -
1 stop35h 15m
Deal found 9/13![Scandinavian Airlines logo]()
$797
This Scandinavian Airlines deal was found by Cheapflights users on 9/12. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/164:45 pm -
2 stops34h 25m
Mon 11/2311:35 am -
1 stop35h 15m
Deal found 9/12![Scandinavian Airlines logo]()
$797
This Scandinavian Airlines deal was found by Cheapflights users on 9/9. 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 2/104:45 pm -
2 stops34h 25m
Mon 2/226:25 pm -
2 stops52h 25m
Deal found 9/9![Scandinavian Airlines logo]()
$801
This Scandinavian Airlines deal was found by Cheapflights users on 9/12. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/174:45 pm -
2 stops34h 25m
Sun 11/2212:25 pm -
2 stops34h 25m
Deal found 9/12![Scandinavian Airlines logo]()
$801
This Scandinavian Airlines deal was found by Cheapflights users on 9/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:45 pm -
2 stops34h 55m
Wed 11/1111:55 am -
2 stops34h 55m
Deal found 9/10![Scandinavian Airlines logo]()
$817
This Scandinavian Airlines deal was found by Cheapflights users on 9/12. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/61:00 pm -
2 stops44h 20m
Mon 1/1111:55 am -
2 stops58h 55m
Deal found 9/12![Scandinavian Airlines logo]()
$881
Last-minute flights from San Francisco to Keflavik IntlDiscover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated September 14, 2026 and is based on user searches.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:15 am -
1 stop12h 50m
Wed 9/237:55 pm -
1 stop21h 18m
Deal found 9/13![Icelandair logo]()
$771
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
1 stop19h 55m
Tue 10/65:00 pm -
1 stop23h 20m
Deal found 9/10![Icelandair logo]()
$776
This oojo deal was found by Cheapflights users on 9/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:39 pm -
1 stop34h 31m
Tue 10/65:00 pm -
1 stop24h 42m
Deal found 9/12![Icelandair logo]()
$768
This oojo deal was found by Cheapflights users on 9/10. 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.
Fri 9/252:39 pm -
1 stop34h 31m
Wed 10/75:10 pm -
1 stop14h 49m
Deal found 9/10![Icelandair logo]()
$772
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am -
1 stop17h 20m
Wed 10/75:10 pm -
1 stop14h 49m
Deal found 9/14![Icelandair logo]()
$782
This Scandinavian Airlines deal was found by Cheapflights users on 9/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:45 pm -
2 stops34h 40m
Wed 10/2811:55 am -
2 stops34h 55m
Deal found 9/11![Scandinavian Airlines logo]()
$769
This oojo deal was found by Cheapflights users on 9/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:45 pm -
1 stop16h 30m
Mon 10/1911:15 am -
2 stops34h 25m
Deal found 9/12![Scandinavian Airlines logo]()
$774
This oojo deal was found by Cheapflights users on 9/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:59 pm -
1 stop25h 56m
Mon 10/197:55 pm -
1 stop36h 10m
Deal found 9/12![Icelandair logo]()
$777
This Scandinavian Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/134:45 pm -
1 stop17h 00m
Tue 10/2011:15 am -
2 stops34h 25m
Deal found 9/9![Scandinavian Airlines logo]()
$783
This oojo deal was found by Cheapflights users on 9/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:44 pm -
1 stop29h 11m
Fri 10/235:10 pm -
1 stop14h 55m
Deal found 9/11![Icelandair logo]()
$773
This Scandinavian Airlines deal was found by Cheapflights users on 9/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:45 pm -
2 stops34h 05m
Tue 10/276:05 pm -
1 stop28h 45m
Deal found 9/11![Scandinavian Airlines logo]()
$781
This oojo deal was found by Cheapflights users on 9/10. 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.
Wed 10/217:59 am -
1 stop17h 11m
Thu 10/295:00 pm -
1 stop14h 25m
Deal found 9/10![Icelandair logo]()
$767
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 September 14, 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 September 14, 2026.
This Expedia deal was found by Cheapflights users on 9/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/185:25 pm -
2 stops31h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Finnair logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Wed 12/95:20 pm -
2 stops31h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$406
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:35 am -
3 stops18h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/211:00 pm -
3 stops37h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$443
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1311:24 am -
2 stops37h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Finnair logo]()
$455
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:05 pm -
1 stop20h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Lufthansa logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:39 pm -
1 stop25h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:59 pm -
2 stops27h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$465
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sat 10/37:11 pm -
2 stops55h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$472
This Booking.com deal was found by Cheapflights users on 9/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:45 pm -
3 stops30h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$479
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 September 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $766 (Booking.com) |
One-way from | $386 (Expedia) |
Popular in | April |
Cheapest in | October |
Average price | $909 |
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 7,457,451 searches. Data last updated September 14, 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 San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Wed 10/21
1:00 pm-9:55 am
3 stops37h 55m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$443
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Sat 2/13
11:24 am-9:15 am
2 stops37h 51m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$455
Quickest round-trip
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Sat 10/24
11:59 pm-10:00 am
2 stops27h 01m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$465
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Fri 10/9
10:42 pm-8:45 am
2 stops51h 03m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$487
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Fri 10/30
4:55 pm-10:00 am
2 stops58h 05m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$491
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Mon 1/18
9:00 am-11:50 pm
3 stops30h 50m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$518
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Sat 12/26
8:00 pm-5:15 pm
1 stop37h 15m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$525
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Tue 10/13
4:45 pm-4:45 pm
1 stop17h 00m
Reykjavik Keflavik Intl
Tue 10/20
11:15 am-2:40 pm
2 stops34h 25m
$767
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Mon 10/12
4:45 pm-10:25 am
2 stops34h 40m
Reykjavik Keflavik Intl
Wed 10/28
11:55 am-3:50 pm
2 stops34h 55m
$769
San FranciscoReykjavik
SFO San Francisco - KEF Reykjavik Keflavik Intl
SFOKEF
San Francisco
Mon 10/19
4:45 pm-10:25 am
2 stops34h 40m
Reykjavik Keflavik Intl
Mon 10/26
11:55 am-3:50 pm
2 stops34h 55m
$771
Showing 1-10 of 19 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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?
Booking 31 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, October is the cheapest month in which you can book a flight from San Francisco to Reykjavik Keflavik Intl Airport (average of $765). Flying from San Francisco to Reykjavik Keflavik Intl Airport in April is currently the most expensive (average of $1,118). 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.
How much does it cost to fly round-trip from San Francisco to Reykjavik Keflavik Intl Airport?
Airfare is below average for this route at the moment.
San Francisco to Reykjavik Keflavik Intl Airport flights typically cost between $818 and $1,023 in February.The cheapest round-trip price found within the last 5 days was $766 on Scandinavian Airlines (Feb 15-Feb 20).
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 14, 2026.
See what other customers who have flown with Alaska Airlines,Scandinavian Airlines, 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.
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
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.
Traveling to a place near Reykjavik Keflavik Intl Airport?
Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locationsKeflavik
Hveragerdi
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Other flights to Keflavik Intl
Explore flights to Keflavik Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 14, 2026.
San Francisco and Keflavik Intl flights
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Top 6 airlines flying from San Francisco to Keflavik Intl
Discover the top 6 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 7,457,451 searches. Data last updated September 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$169 | Average$904 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$243 | Average$1,000 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$636 | Average$994 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$655 | Average$771 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$662 | Average$960 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$765 | Average$1,028 | FlexibilityNo cancel fee | On-time76% |