$297+ 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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — KEF
May 28 — Jun 41
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 April 28, 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 April 28, 2026.
This Trip.com deal was found by Cheapflights users on 4/27. 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.
Tue 7/146:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Tue 7/219:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 4/27![WestJet logo]()
$619
This Trip.com deal was found by Cheapflights users on 4/27. 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.
Mon 6/296:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Tue 7/149:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 4/27![WestJet logo]()
$623
This Trip.com deal was found by Cheapflights users on 4/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/226:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Wed 7/19:00 am
KEF
- SFO
1 stop14h 40m
WestJet
Deal found 4/25![WestJet logo]()
$637
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 7/66:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Mon 7/209:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 4/27![WestJet logo]()
$649
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 7/126:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Wed 7/229:00 am
KEF
- SFO
1 stop34h 00m
WestJet
Deal found 4/27![WestJet logo]()
$661
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 7/136:05 pm
SFO
- KEF
1 stop30h 35m
WestJet
Mon 7/209:00 am
KEF
- SFO
1 stop19h 55m
WestJet
Deal found 4/27![WestJet logo]()
$662
This Mytrip deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:45 pm
SFO
- KEF
3 stops29h 55m
Multiple Airlines
Mon 7/209:00 am
KEF
- SFO
1 stop19h 55m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$676
This Mytrip deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:35 am
SFO
- KEF
2 stops18h 05m
Multiple Airlines
Tue 7/219:00 am
KEF
- SFO
1 stop14h 40m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$699
This Mytrip deal was found by Cheapflights users on 4/27. 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 7/146:35 am
SFO
- KEF
2 stops18h 05m
Multiple Airlines
Wed 7/229:00 am
KEF
- SFO
1 stop19h 55m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$703
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 April 28, 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 April 28, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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 6/76:00 am
SFO
- KEF
1 stop20h 00m
Alaska Airlines
Thu 6/1812:45 pm
KEF
- SFO
1 stop16h 09m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$845
This Scandinavian Airlines deal was found by Cheapflights users on 4/24. 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 stops18h 00m
Scandinavian Airlines
Tue 9/811:15 am
KEF
- SFO
2 stops34h 25m
Scandinavian Airlines
Deal found 4/24![Scandinavian Airlines logo]()
$940
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 8/167:03 am
SFO
- KEF
1 stop18h 57m
Alaska Airlines
Sat 8/2912:45 pm
KEF
- SFO
1 stop15h 42m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$845
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 6/111:30 am
SFO
- KEF
1 stop14h 30m
Alaska Airlines
Thu 6/412:45 pm
KEF
- SFO
1 stop16h 58m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$845
This Scandinavian Airlines deal was found by Cheapflights users on 4/25. 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.
Mon 8/314:45 pm
SFO
- KEF
2 stops34h 40m
Scandinavian Airlines
Thu 9/1011:15 am
KEF
- SFO
2 stops34h 25m
Scandinavian Airlines
Deal found 4/25![Scandinavian Airlines logo]()
$940
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 8/287:00 am
SFO
- KEF
1 stop19h 00m
Alaska Airlines
Tue 9/812:45 pm
KEF
- SFO
1 stop17h 54m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$846
This Scandinavian Airlines deal was found by Cheapflights users on 4/23. 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.
Sun 5/104:45 pm
SFO
- KEF
2 stops34h 40m
Scandinavian Airlines
Thu 5/146:25 pm
KEF
- SFO
2 stops27h 15m
Scandinavian Airlines
Deal found 4/23![Scandinavian Airlines logo]()
$971
This Scandinavian Airlines deal was found by Cheapflights users on 4/24. 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 9/2111:15 am
KEF
- SFO
2 stops34h 25m
Scandinavian Airlines
Deal found 4/24![Scandinavian Airlines logo]()
$1,020
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Sat 5/303:05 pm
SFO
- KEF
2 stops15h 55m
Alaska Airlines
Tue 6/210:40 am
KEF
- SFO
1 stop12h 24m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$999
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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.
Sat 6/2012:27 pm
SFO
- KEF
1 stop13h 33m
Alaska Airlines
Thu 6/2512:45 pm
KEF
- SFO
1 stop15h 03m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$1,033
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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.
Wed 7/229:00 am
SFO
- KEF
1 stop17h 00m
Alaska Airlines
Wed 7/2912:45 pm
KEF
- SFO
1 stop14h 07m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$1,034
Last-minute flights from San Francisco to Keflavik IntlDiscover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Keflavik Intl. Data last updated April 28, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/247:40 am
SFO
- KEF
1 stop19h 00m
Multiple Airlines
Tue 6/210:40 am
KEF
- SFO
1 stop13h 08m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$729
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:40 am
SFO
- KEF
1 stop15h 25m
Multiple Airlines
Tue 6/210:40 am
KEF
- SFO
1 stop13h 08m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$758
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 5/286:00 am
SFO
- KEF
1 stop17h 15m
Multiple Airlines
Fri 6/510:40 am
KEF
- SFO
1 stop12h 24m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$711
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 5/287:40 am
SFO
- KEF
1 stop15h 25m
Multiple Airlines
Sat 6/610:40 am
KEF
- SFO
1 stop13h 08m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$748
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/296:00 am
SFO
- KEF
1 stop17h 15m
Multiple Airlines
Tue 6/210:40 am
KEF
- SFO
1 stop12h 24m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$761
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/296:00 am
SFO
- KEF
1 stop17h 15m
Multiple Airlines
Sat 6/610:40 am
KEF
- SFO
1 stop14h 22m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$776
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/305:44 pm
SFO
- KEF
1 stop13h 16m
Multiple Airlines
Sat 6/610:40 am
KEF
- SFO
1 stop14h 22m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$775
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 5/317:40 am
SFO
- KEF
1 stop19h 00m
Multiple Airlines
Tue 6/910:40 am
KEF
- SFO
1 stop16h 16m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$722
This Kiwi.com deal was found by Cheapflights users on 4/23. 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.
Sun 5/317:40 am
SFO
- KEF
1 stop19h 00m
Multiple Airlines
Thu 6/410:40 am
KEF
- SFO
1 stop13h 08m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$770
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 5/316:00 am
SFO
- KEF
1 stop17h 15m
Multiple Airlines
Wed 6/1010:40 am
KEF
- SFO
1 stop15h 08m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$772
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/317:40 am
SFO
- KEF
1 stop19h 00m
Multiple Airlines
Fri 6/54:50 pm
KEF
- SFO
1 stop13h 30m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$773
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 April 28, 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 April 28, 2026.
This Trip.com deal was found by Cheapflights users on 4/23. 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.
Mon 7/66:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Deal found 4/23![WestJet logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 7/86:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Deal found 4/24![WestJet logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 4/23. 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.
Sun 7/56:00 am
SFO
- KEF
1 stop18h 40m
WestJet
Deal found 4/23![WestJet logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/226:05 pm
SFO
- KEF
1 stop30h 35m
WestJet
Deal found 4/27![WestJet logo]()
$343
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:30 pm
SFO
- KEF
2 stops29h 10m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 6/1310:58 pm
SFO
- KEF
2 stops25h 42m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Sat 9/56:05 pm
SFO
- KEF
1 stop30h 35m
WestJet
Deal found 4/25![WestJet logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 7/38:21 pm
SFO
- KEF
2 stops52h 19m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$389
This Mytrip deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:45 pm
SFO
- KEF
3 stops29h 55m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 7/66:45 pm
SFO
- KEF
2 stops29h 55m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 8/106:45 pm
SFO
- KEF
2 stops29h 55m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$395
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 April 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $619 (Trip.com) |
One-way from | $297 (Trip.com) |
Popular in | April |
Cheapest in | December |
Average price | $1,227 |
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 April 28, 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
Sun 6/7
6:00 am-9:00 am
1 stop20h 00m
Reykjavik Keflavik Intl
Thu 6/18
12:45 pm-9:54 pm
1 stop16h 09m
$845
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sun 8/16
7:03 am-9:00 am
1 stop18h 57m
Reykjavik Keflavik Intl
Sat 8/29
12:45 pm-9:27 pm
1 stop15h 42m
$845
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Mon 6/1
11:30 am-9:00 am
1 stop14h 30m
Reykjavik Keflavik Intl
Thu 6/4
12:45 pm-10:43 pm
1 stop16h 58m
$845
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 8/28
7:00 am-9:00 am
1 stop19h 00m
Reykjavik Keflavik Intl
Tue 9/8
12:45 pm-11:39 pm
1 stop17h 54m
$846
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Fri 8/28
4:45 pm-5:45 pm
2 stops18h 00m
Reykjavik Keflavik Intl
Tue 9/8
11:15 am-2:40 pm
2 stops34h 25m
$940
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Mon 8/31
4:45 pm-10:25 am
2 stops34h 40m
Reykjavik Keflavik Intl
Thu 9/10
11:15 am-2:40 pm
2 stops34h 25m
$940
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sun 5/10
4:45 pm-10:25 am
2 stops34h 40m
Reykjavik Keflavik Intl
Thu 5/14
6:25 pm-2:40 pm
2 stops27h 15m
$971
Quickest round-trip
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sat 5/30
3:05 pm-2:00 pm
2 stops15h 55m
Reykjavik Keflavik Intl
Tue 6/2
10:40 am-4:04 pm
1 stop12h 24m
$999
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
11:15 am-2:40 pm
2 stops34h 25m
$1,020
San FranciscoReykjavik
SFO - KEF
SFOKEF
San Francisco
Sat 6/20
12:27 pm-9:00 am
1 stop13h 33m
Reykjavik Keflavik Intl
Thu 6/25
12:45 pm-8:48 pm
1 stop15h 03m
$1,033
Showing 1-10 of 21 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 April.
| 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 88 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 $1,227). 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?
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 April 28, 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.
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
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 April 28, 2026.
San Francisco and Keflavik Intl flights
Browse other San Francisco and Keflavik Intl flight options. Last updated on April 28, 2026.
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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 April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$212 | Average$898 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$538 | Average$777 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$642 | Average$821 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$652 | Average$830 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$682 | Average$903 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$698 | Average$803 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$771 | Average$1,055 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$845 | Average$1,095 | FlexibilityNo cancel fee | On-time75% |