$237+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
Aug 25 — Sep 11
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
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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 July 26, 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 July 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/181:00 pm
SFO
- KEF
1 stop11h 40m
WestJet
Fri 9/49:00 am
KEF
- SFO
1 stop34h 00m
WestJet
Deal found 7/25![WestJet logo]()
$669
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 8/236:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Fri 9/49:00 am
KEF
- SFO
1 stop34h 00m
WestJet
Deal found 7/25![WestJet logo]()
$670
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/198:56 pm
SFO
- KEF
2 stops27h 44m
Multiple Airlines
Sat 9/59:00 am
KEF
- SFO
1 stop19h 55m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$671
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/266:21 pm
SFO
- KEF
1 stop31h 39m
Multiple Airlines
Wed 9/29:00 am
KEF
- SFO
1 stop19h 55m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$673
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/186:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Thu 9/39:00 am
KEF
- SFO
1 stop14h 40m
WestJet
Deal found 7/25![WestJet logo]()
$675
This Mytrip deal was found by Cheapflights users on 7/25. 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.
Tue 8/256:00 am
SFO
- KEF
1 stop18h 40m
Multiple Airlines
Thu 9/39:00 am
KEF
- SFO
3 stops22h 07m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$676
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 8/236:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Thu 9/39:00 am
KEF
- SFO
1 stop14h 40m
WestJet
Deal found 7/25![WestJet logo]()
$677
This Mytrip deal was found by Cheapflights users on 7/21. 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.
Tue 8/257:30 pm
SFO
- KEF
3 stops29h 10m
Multiple Airlines
Tue 9/19:00 am
KEF
- SFO
2 stops22h 07m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$678
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 8/236:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Wed 9/29:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 7/25![WestJet logo]()
$682
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/256:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Wed 9/29:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 7/25![WestJet logo]()
$683
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 9/77:00 am
SFO
- KEF
1 stop19h 00m
Multiple Airlines
Tue 9/159:00 am
KEF
- SFO
2 stops16h 22m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$685
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 July 26, 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 July 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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.
Sun 9/69:03 am
SFO
- KEF
1 stop16h 57m
Alaska Airlines
Sat 9/1210:40 am
KEF
- SFO
1 stop16h 25m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$733
This Scandinavian Airlines deal was found by Cheapflights users on 7/25. 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
SFO
- KEF
2 stops34h 55m
Scandinavian Airlines
Wed 11/1111:30 am
KEF
- SFO
2 stops35h 20m
Scandinavian Airlines
Deal found 7/25![Scandinavian Airlines logo]()
$785
This Icelandair deal was found by Cheapflights users on 7/21. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:50 am
SFO
- KEF
1 stop15h 15m
Icelandair
Sat 9/197:55 pm
KEF
- SFO
1 stop21h 35m
Icelandair
Deal found 7/21![Icelandair logo]()
$829
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 10/168:30 am
SFO
- KEF
1 stop17h 15m
United Airlines
Fri 10/239:15 am
KEF
- SFO
2 stops43h 39m
United Airlines
Deal found 7/25![United Airlines logo]()
$860
This United deal was found by Cheapflights users on 7/22. 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.
Sat 11/2111:59 pm
SFO
- KEF
2 stops26h 01m
Multiple Airlines
Sun 11/293:20 pm
KEF
- SFO
1 stop29h 15m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$934
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Sun 8/2310:36 am
SFO
- KEF
1 stop15h 24m
Alaska Airlines
Tue 9/810:40 am
KEF
- SFO
1 stop17h 59m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$744
This Scandinavian Airlines deal was found by Cheapflights users on 7/23. 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
Scandinavian Airlines
Mon 9/215:05 pm
KEF
- SFO
2 stops37h 46m
Scandinavian Airlines
Deal found 7/23![Scandinavian Airlines logo]()
$884
This Scandinavian Airlines deal was found by Cheapflights users on 7/22. 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
2 stops33h 15m
Scandinavian Airlines
Tue 9/811:15 am
KEF
- SFO
2 stops34h 25m
Scandinavian Airlines
Deal found 7/22![Scandinavian Airlines logo]()
$898
This Scandinavian Airlines deal was found by Cheapflights users on 7/25. 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 9/134:45 pm
SFO
- KEF
2 stops34h 40m
Scandinavian Airlines
Thu 9/2411:15 am
KEF
- SFO
2 stops34h 25m
Scandinavian Airlines
Deal found 7/25![Scandinavian Airlines logo]()
$898
This Scandinavian Airlines deal was found by Cheapflights users on 7/22. 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 8/184:45 pm
SFO
- KEF
2 stops33h 10m
Scandinavian Airlines
Wed 8/265:35 pm
KEF
- SFO
1 stop28h 05m
Scandinavian Airlines
Deal found 7/22![Scandinavian Airlines logo]()
$914
Last-minute flights from San Francisco to Keflavik IntlDiscover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated July 26, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated July 26, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/181:00 pm
SFO
- KEF
1 stop11h 40m
WestJet
Fri 9/49:00 am
KEF
- SFO
1 stop34h 00m
WestJet
Deal found 7/25![WestJet logo]()
$669
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/186:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Thu 9/39:00 am
KEF
- SFO
1 stop14h 40m
WestJet
Deal found 7/25![WestJet logo]()
$675
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/198:56 pm
SFO
- KEF
2 stops27h 44m
Multiple Airlines
Sat 9/59:00 am
KEF
- SFO
1 stop19h 55m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$671
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 8/236:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Fri 9/49:00 am
KEF
- SFO
1 stop34h 00m
WestJet
Deal found 7/25![WestJet logo]()
$670
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 8/236:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Thu 9/39:00 am
KEF
- SFO
1 stop14h 40m
WestJet
Deal found 7/25![WestJet logo]()
$677
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 8/236:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Wed 9/29:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 7/25![WestJet logo]()
$682
This Mytrip deal was found by Cheapflights users on 7/25. 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.
Tue 8/256:00 am
SFO
- KEF
1 stop18h 40m
Multiple Airlines
Thu 9/39:00 am
KEF
- SFO
3 stops22h 07m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$676
This Mytrip deal was found by Cheapflights users on 7/21. 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.
Tue 8/257:30 pm
SFO
- KEF
3 stops29h 10m
Multiple Airlines
Tue 9/19:00 am
KEF
- SFO
2 stops22h 07m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$678
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/256:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Wed 9/29:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 7/25![WestJet logo]()
$683
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/266:21 pm
SFO
- KEF
1 stop31h 39m
Multiple Airlines
Wed 9/29:00 am
KEF
- SFO
1 stop19h 55m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$673
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 July 26, 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 July 26, 2026.
This Trip.com deal was found by Cheapflights users on 7/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:22 pm
SFO
- KEF
1 stop30h 38m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$237
This Expedia deal was found by Cheapflights users on 7/21. 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.
Wed 9/231:45 pm
SFO
- KEF
1 stop12h 40m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 9/51:07 pm
SFO
- KEF
2 stops36h 53m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/95:52 pm
SFO
- KEF
2 stops53h 23m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/146:00 am
SFO
- KEF
2 stops41h 55m
WestJet
Deal found 7/22![WestJet logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 9/171:10 pm
SFO
- KEF
2 stops35h 30m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/288:23 pm
SFO
- KEF
2 stops53h 37m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
3 stops29h 10m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/812:31 pm
SFO
- KEF
2 stops34h 44m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/156:00 am
SFO
- KEF
2 stops17h 55m
WestJet
Deal found 7/22![WestJet logo]()
$388
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 July 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $669 (Kiwi.com) |
One-way from | $237 (Trip.com) |
Popular in | April |
Cheapest in | October |
Average price | $1,081 |
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 July 26, 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
Quickest round-trip
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sun 9/6
9:03 am-9:00 am
1 stop16h 57m
Reykjavik Keflavik Intl
Sat 9/12
10:40 am-8:05 pm
1 stop16h 25m
$733
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sun 8/23
10:36 am-9:00 am
1 stop15h 24m
Reykjavik Keflavik Intl
Tue 9/8
10:40 am-9:39 pm
1 stop17h 59m
$744
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 11/6
4:45 pm-11:40 am
2 stops34h 55m
Reykjavik Keflavik Intl
Wed 11/11
11:30 am-2:50 pm
2 stops35h 20m
$785
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 9/11
7:50 am-6:05 am
1 stop15h 15m
Reykjavik Keflavik Intl
Sat 9/19
7:55 pm-10:30 am
1 stop21h 35m
$829
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 10/16
8:30 am-8:45 am
1 stop17h 15m
Reykjavik Keflavik Intl
Fri 10/23
9:15 am-9:54 pm
2 stops43h 39m
$860
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
5:05 pm-11:51 pm
2 stops37h 46m
$884
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 8/28
4:45 pm-9:00 am
2 stops33h 15m
Reykjavik Keflavik Intl
Tue 9/8
11:15 am-2:40 pm
2 stops34h 25m
$898
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sun 9/13
4:45 pm-10:25 am
2 stops34h 40m
Reykjavik Keflavik Intl
Thu 9/24
11:15 am-2:40 pm
2 stops34h 25m
$898
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Tue 8/18
4:45 pm-8:55 am
2 stops33h 10m
Reykjavik Keflavik Intl
Wed 8/26
5:35 pm-2:40 pm
1 stop28h 05m
$914
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sat 11/21
11:59 pm-10:00 am
2 stops26h 01m
Reykjavik Keflavik Intl
Sun 11/29
3:20 pm-12:35 pm
1 stop29h 15m
$934
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 July.
| 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 37 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, December is the cheapest month in which you can book a flight from San Francisco to Reykjavik Keflavik Intl Airport (average of $740). Flying from San Francisco to Reykjavik Keflavik Intl Airport in April is currently the most expensive (average of $1,148). 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 $888 and $1,094 in August.The cheapest round-trip price found within the last 5 days was $669 on WestJet (Aug 18-Sep 4).
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 July 26, 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.
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
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.
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 July 26, 2026.
San Francisco and Keflavik Intl flights
Browse other San Francisco and Keflavik Intl flight options. Last updated on July 26, 2026.
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Top 7 airlines flying from San Francisco to Keflavik Intl
Discover the top 7 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 July 26, 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$549 | Average$854 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$635 | Average$957 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$636 | Average$929 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$655 | Average$771 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$773 | Average$1,083 | FlexibilityNo cancel fee | On-time76% |