$152+ Cheap flights from San Francisco (SFO) to San Juan
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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SJU
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to San Juan with Cheapflights
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Cheapest flights from San Francisco to San JuanExplore the most affordable flight options available from San Francisco to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
Explore the most affordable flight options available from San Francisco to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 8/2910:35 pm
SFO
- SJU
1 stop12h 41m
Frontier
Sat 9/55:37 pm
SJU
- SFO
2 stops28h 26m
Frontier
Deal found 7/20![Frontier logo]()
$437
This Justfly.com deal was found by Cheapflights users on 7/19. 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.
Sat 10/2410:10 pm
SFO
- SJU
1 stop13h 03m
JetBlue
Wed 10/286:25 am
SJU
- SFO
1 stop20h 05m
JetBlue
Deal found 7/19![JetBlue logo]()
$439
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 9/110:35 pm
SFO
- SJU
1 stop12h 41m
Frontier
Sun 9/612:11 pm
SJU
- SFO
2 stops13h 43m
Frontier
Deal found 7/19![Frontier logo]()
$441
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/1711:05 pm
SFO
- SJU
1 stop12h 11m
Frontier
Mon 8/2412:11 pm
SJU
- SFO
2 stops25h 14m
Frontier
Deal found 7/19![Frontier logo]()
$445
This Southwest deal was found by Cheapflights users on 7/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:20 am
SFO
- SJU
2 stops11h 25m
Southwest
Tue 10/206:35 am
SJU
- SFO
2 stops12h 30m
Southwest
Deal found 7/20![Southwest logo]()
$448
This Priceline deal was found by Cheapflights users on 7/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:48 pm
SFO
- SJU
1 stop13h 37m
Multiple Airlines
Wed 9/304:30 pm
SJU
- SFO
1 stop9h 49m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$451
This Justfly.com deal was found by Cheapflights users on 7/19. 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.
Tue 9/110:35 pm
SFO
- SJU
1 stop12h 41m
Multiple Airlines
Sun 9/69:42 am
SJU
- SFO
1 stop17h 08m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$452
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:05 pm
SFO
- SJU
1 stop12h 11m
Multiple Airlines
Tue 8/255:00 pm
SJU
- SFO
1 stop9h 51m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$453
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:30 am
SFO
- SJU
1 stop8h 43m
JetBlue
Mon 10/262:50 pm
SJU
- SFO
1 stop11h 40m
JetBlue
Deal found 7/22![JetBlue logo]()
$454
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:48 pm
SFO
- SJU
1 stop12h 58m
Multiple Airlines
Wed 10/219:00 am
SJU
- SFO
1 stop17h 17m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$456
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:35 pm
SFO
- SJU
1 stop12h 41m
Multiple Airlines
Mon 8/247:00 am
SJU
- SFO
1 stop19h 51m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$457
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.
Tue 8/410:10 pm
SFO
- SJU
1 stop13h 06m
Frontier
Mon 8/103:10 am
SJU
- SFO
2 stops34h 15m
Frontier
Deal found 7/22![Frontier logo]()
$458
Best flights from San Francisco to San JuanDiscover carefully curated flight deals from San Francisco to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
Discover carefully curated flight deals from San Francisco to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
This FlightHub deal was found by Cheapflights users on 7/19. 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.
Sun 8/3010:35 pm
SFO
- SJU
1 stop12h 41m
Multiple Airlines
Wed 9/162:32 pm
SJU
- SFO
1 stop11h 47m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$453
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:20 am
SFO
- SJU
2 stops11h 25m
Southwest
Mon 10/265:30 am
SJU
- SFO
1 stop12h 05m
Southwest
Deal found 7/22![Southwest logo]()
$463
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:44 pm
SFO
- SJU
1 stop13h 27m
JetBlue
Fri 8/281:48 pm
SJU
- SFO
1 stop13h 03m
JetBlue
Deal found 7/21![JetBlue logo]()
$471
This Delta deal was found by Cheapflights users on 7/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:25 pm
SFO
- SJU
2 stops13h 21m
Delta
Wed 9/162:59 pm
SJU
- SFO
1 stop11h 58m
Delta
Deal found 7/19![Delta logo]()
$510
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am
SFO
- SJU
1 stop9h 38m
United Airlines
Tue 10/276:40 am
SJU
- SFO
1 stop11h 07m
United Airlines
Deal found 7/21![United Airlines logo]()
$510
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:55 pm
SFO
- SJU
2 stops16h 15m
Southwest
Thu 8/275:30 am
SJU
- SFO
1 stop10h 30m
Southwest
Deal found 7/23![Southwest logo]()
$496
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:30 pm
SFO
- SJU
1 stop11h 06m
Delta
Thu 10/227:00 am
SJU
- SFO
2 stops16h 03m
Delta
Deal found 7/22![Delta logo]()
$510
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:50 am
SFO
- SJU
2 stops12h 15m
Southwest
Wed 8/268:20 am
SJU
- SFO
2 stops11h 05m
Southwest
Deal found 7/23![Southwest logo]()
$496
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:00 am
SFO
- SJU
1 stop13h 19m
Delta
Tue 9/152:59 pm
SJU
- SFO
1 stop11h 58m
Delta
Deal found 7/24![Delta logo]()
$510
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:45 pm
SFO
- SJU
2 stops16h 36m
Delta
Sat 10/317:30 am
SJU
- SFO
2 stops16h 15m
Delta
Deal found 7/22![Delta logo]()
$510
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:00 am
SFO
- SJU
1 stop13h 56m
Delta
Sun 10/112:31 pm
SJU
- SFO
1 stop10h 04m
Delta
Deal found 7/20![Delta logo]()
$510
Last-minute flights from San Francisco to San JuanDiscover last-minute flight deals from San Francisco to San Juan. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to San Juan. Data last updated July 24, 2026 and is based on user searches.
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.
Tue 8/410:10 pm
SFO
- SJU
1 stop13h 06m
Frontier
Mon 8/103:10 am
SJU
- SFO
2 stops34h 15m
Frontier
Deal found 7/22![Frontier logo]()
$458
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.
Thu 8/610:18 pm
SFO
- SJU
1 stop12h 58m
Frontier
Mon 8/103:10 am
SJU
- SFO
2 stops34h 15m
Frontier
Deal found 7/22![Frontier logo]()
$459
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/1310:18 pm
SFO
- SJU
1 stop12h 58m
Frontier
Mon 8/1710:48 pm
SJU
- SFO
2 stops48h 52m
Frontier
Deal found 7/24![Frontier logo]()
$461
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1411:05 pm
SFO
- SJU
1 stop12h 11m
Multiple Airlines
Wed 8/191:43 pm
SJU
- SFO
1 stop13h 08m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/1711:05 pm
SFO
- SJU
1 stop12h 11m
Frontier
Mon 8/2412:11 pm
SJU
- SFO
2 stops25h 14m
Frontier
Deal found 7/19![Frontier logo]()
$445
This FlightHub deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:05 pm
SFO
- SJU
1 stop12h 11m
Multiple Airlines
Tue 8/255:00 pm
SJU
- SFO
1 stop9h 51m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$453
This Southwest deal was found by Cheapflights users on 7/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:55 pm
SFO
- SJU
2 stops12h 05m
Southwest
Tue 8/2511:50 am
SJU
- SFO
2 stops12h 20m
Southwest
Deal found 7/19![Southwest logo]()
$448
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:35 pm
SFO
- SJU
1 stop12h 41m
Multiple Airlines
Mon 8/247:00 am
SJU
- SFO
1 stop19h 51m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$457
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:35 pm
SFO
- SJU
1 stop12h 41m
Multiple Airlines
Thu 8/275:00 pm
SJU
- SFO
1 stop9h 51m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 8/2910:35 pm
SFO
- SJU
1 stop12h 41m
Frontier
Sat 9/55:37 pm
SJU
- SFO
2 stops28h 26m
Frontier
Deal found 7/20![Frontier logo]()
$437
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:30 pm
SFO
- SJU
1 stop13h 00m
Southwest
Sun 9/66:30 am
SJU
- SFO
2 stops12h 00m
Southwest
Deal found 7/21![Southwest logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/3010:35 pm
SFO
- SJU
1 stop12h 41m
Frontier
Thu 9/106:05 am
SJU
- SFO
2 stops15h 15m
Frontier
Deal found 7/19![Frontier logo]()
$463
One-way flights from San Francisco to San JuanSearch for one-way flight options from San Francisco to San Juan. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from San Francisco to San Juan. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
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.
Tue 8/1811:20 am
SFO
- SJU
2 stops20h 46m
Frontier
Deal found 7/22![Frontier logo]()
$152
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.
Tue 10/136:22 am
SFO
- SJU
2 stops27h 54m
Frontier
Deal found 7/23![Frontier logo]()
$182
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.
Wed 9/3011:42 am
SFO
- SJU
2 stops23h 36m
Frontier
Deal found 7/23![Frontier logo]()
$198
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.
Thu 8/137:04 pm
SFO
- SJU
2 stops26h 37m
Frontier
Deal found 7/23![Frontier logo]()
$202
This Southwest deal was found by Cheapflights users on 7/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:45 pm
SFO
- SJU
2 stops12h 25m
Southwest
Deal found 7/20![Southwest logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/176:04 pm
SFO
- SJU
2 stops27h 52m
Frontier
Deal found 7/24![Frontier logo]()
$205
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2110:35 pm
SFO
- SJU
1 stop12h 41m
Frontier
Deal found 7/21![Frontier logo]()
$206
This Super.com deal was found by Cheapflights users on 7/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:48 pm
SFO
- SJU
1 stop12h 58m
Frontier
Deal found 7/20![Frontier logo]()
$207
Find flight deals from San Francisco to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to San Juan (PR1). 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 24, 2026.
Round-trip from | $437 (Kiwi.com) |
|---|---|
One-way from | $152 (Kiwi.com) |
Popular in | July |
Cheapest in | September |
Average price | $631 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to San Juan 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 24, 2026.
Use the filters below to find and compare flights from San Francisco to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Sun 8/30
10:35 pm-2:16 pm
1 stop12h 41m
San Juan Luis Munoz Marin Intl
Wed 9/16
2:32 pm-11:19 pm
1 stop11h 47m
$453
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Wed 10/21
9:20 am-11:45 pm
2 stops11h 25m
San Juan Luis Munoz Marin Intl
Mon 10/26
5:30 am-2:35 pm
1 stop12h 05m
$463
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Mon 8/24
9:44 pm-2:11 pm
1 stop13h 27m
San Juan Luis Munoz Marin Intl
Fri 8/28
1:48 pm-11:51 pm
1 stop13h 03m
$471
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Thu 8/13
1:55 pm-9:10 am
2 stops16h 15m
San Juan Luis Munoz Marin Intl
Thu 8/27
5:30 am-1:00 pm
1 stop10h 30m
$496
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Wed 8/19
5:50 am-9:05 pm
2 stops12h 15m
San Juan Luis Munoz Marin Intl
Wed 8/26
8:20 am-4:25 pm
2 stops11h 05m
$496
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Sun 8/30
7:25 pm-11:46 am
2 stops13h 21m
San Juan Luis Munoz Marin Intl
Wed 9/16
2:59 pm-11:57 pm
1 stop11h 58m
$510
Quickest round-trip
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Tue 10/20
5:00 am-5:38 pm
1 stop9h 38m
San Juan Luis Munoz Marin Intl
Tue 10/27
6:40 am-2:47 pm
1 stop11h 07m
$510
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Sun 10/18
9:30 pm-11:36 am
1 stop11h 06m
San Juan Luis Munoz Marin Intl
Thu 10/22
7:00 am-8:03 pm
2 stops16h 03m
$510
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Fri 9/11
6:00 am-10:19 pm
1 stop13h 19m
San Juan Luis Munoz Marin Intl
Tue 9/15
2:59 pm-11:57 pm
1 stop11h 58m
$510
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Mon 10/19
5:45 pm-1:21 pm
2 stops16h 36m
San Juan Luis Munoz Marin Intl
Sat 10/31
7:30 am-8:45 pm
2 stops16h 15m
$510
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from San Francisco to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from San Francisco with our price prediction graph.
SFO-PR1
SFO-SJU
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 San Juan
SFO-PR1
SFO-SJU
What is the cheapest month to book a flight from San Francisco to San Juan?
Currently, September is the cheapest month in which you can book a flight from San Francisco to San Juan (average of $470). Flying from San Francisco to San Juan in December is currently the most expensive (average of $614). 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 San Juan?
Airfare is below average for this route at the moment.
San Francisco to San Juan flights typically cost between $472 and $693 in August.The cheapest round-trip price found within the last 5 days was $437 on Frontier (Aug 29-Sep 5).
How far ahead should I book a flight from San Francisco to San Juan?
The best time to book flights from San Francisco to San Juan is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated July 24, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from San Francisco to San Juan to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Francisco to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Francisco to San Juan
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Complete your trip
Complete your trip to San Juan by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to San Juan by cabin class
Find flights from San Francisco to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and San Juan flights
Browse other San Francisco and San Juan flight options. Last updated on July 24, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on July 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from San Francisco to San Juan
Discover the top 8 airlines that operate flights from San Francisco to San Juan. 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 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$122 | Average$383 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$185 | Average$470 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$222 | Average$748 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$289 | Average$419 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$351 | Average$756 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$353 | Average$553 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$369 | Average$597 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$412 | Average$584 | FlexibilityNo cancel fee | On-time63% |