$178+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SJU
Mar 28 — Apr 41
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 February 26, 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 February 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/1711:16 pm
SFO
- SJU
2 stops23h 45m
Frontier
Fri 4/243:23 pm
SJU
- SFO
1 stop29h 11m
Frontier
Deal found 2/23![Frontier logo]()
$348
This CheapOair deal was found by Cheapflights users on 2/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:38 pm
SFO
- SJU
1 stop12h 30m
Multiple Airlines
Sat 5/96:00 pm
SJU
- SFO
2 stops22h 00m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/138:14 pm
SFO
- SJU
2 stops34h 40m
Frontier
Fri 4/243:23 pm
SJU
- SFO
1 stop29h 11m
Frontier
Deal found 2/23![Frontier logo]()
$354
This Priceline deal was found by Cheapflights users on 2/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:38 pm
SFO
- SJU
1 stop12h 30m
Multiple Airlines
Wed 5/2012:15 pm
SJU
- SFO
1 stop14h 41m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$355
This Frontier deal was found by Cheapflights users on 2/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2410:38 pm
SFO
- SJU
1 stop12h 39m
Frontier
Fri 4/36:00 am
SJU
- SFO
1 stop16h 14m
Frontier
Deal found 2/22![Frontier logo]()
$356
This CheapOair deal was found by Cheapflights users on 2/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:38 pm
SFO
- SJU
1 stop12h 59m
Multiple Airlines
Sat 5/912:50 pm
SJU
- SFO
1 stop14h 09m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Fri 4/2411:16 pm
SFO
- SJU
1 stop33h 19m
Multiple Airlines
Mon 5/47:17 pm
SJU
- SFO
2 stops24h 37m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$358
This Priceline deal was found by Cheapflights users on 2/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:40 pm
SFO
- SJU
1 stop12h 37m
Multiple Airlines
Tue 3/175:19 am
SJU
- SFO
1 stop20h 57m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$359
This CheapOair deal was found by Cheapflights users on 2/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:38 pm
SFO
- SJU
1 stop12h 55m
Multiple Airlines
Wed 4/2912:05 pm
SJU
- SFO
2 stops14h 54m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$360
This Expedia deal was found by Cheapflights users on 2/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:38 pm
SFO
- SJU
1 stop12h 30m
Multiple Airlines
Thu 5/218:55 pm
SJU
- SFO
1 stop16h 22m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 4/78:14 pm
SFO
- SJU
2 stops43h 18m
Multiple Airlines
Thu 4/166:49 pm
SJU
- SFO
1 stop30h 42m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 5/1310:38 pm
SFO
- SJU
1 stop12h 30m
Frontier
Wed 5/206:30 am
SJU
- SFO
2 stops39h 40m
Frontier
Deal found 2/25![Frontier logo]()
$364
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 February 26, 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 February 26, 2026.
This Delta deal was found by Cheapflights users on 2/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:05 am
SFO
- SJU
1 stop11h 07m
Delta
Tue 3/101:00 pm
SJU
- SFO
1 stop13h 19m
Delta
Deal found 2/25![Delta logo]()
$436
This Southwest deal was found by Cheapflights users on 2/23. 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 4/155:25 am
SFO
- SJU
2 stops12h 40m
Southwest
Wed 4/225:05 am
SJU
- SFO
2 stops17h 50m
Southwest
Deal found 2/23![Southwest logo]()
$467
This United Airlines deal was found by Cheapflights users on 2/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/129:30 pm
SFO
- SJU
1 stop12h 04m
United Airlines
Thu 4/232:55 pm
SJU
- SFO
1 stop12h 04m
United Airlines
Deal found 2/23![United Airlines logo]()
$480
This JetBlue deal was found by Cheapflights users on 2/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:00 am
SFO
- SJU
1 stop9h 49m
JetBlue
Mon 4/2011:25 pm
SJU
- SFO
1 stop13h 45m
JetBlue
Deal found 2/24![JetBlue logo]()
$616
This United Airlines deal was found by Cheapflights users on 2/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1210:38 pm
SFO
- SJU
1 stop10h 56m
United Airlines
Fri 4/244:55 pm
SJU
- SFO
1 stop11h 22m
United Airlines
Deal found 2/23![United Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 2/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/175:40 am
SFO
- SJU
2 stops14h 32m
Delta
Fri 4/242:03 pm
SJU
- SFO
2 stops12h 51m
Delta
Deal found 2/23![Delta logo]()
$497
This Southwest deal was found by Cheapflights users on 2/22. 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.
Mon 3/2311:25 pm
SFO
- SJU
2 stops12h 20m
Southwest
Wed 4/811:25 am
SJU
- SFO
2 stops13h 40m
Southwest
Deal found 2/22![Southwest logo]()
$547
This Delta deal was found by Cheapflights users on 2/22. 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.
Tue 4/216:20 am
SFO
- SJU
2 stops13h 52m
Delta
Thu 4/302:03 pm
SJU
- SFO
2 stops12h 51m
Delta
Deal found 2/22![Delta logo]()
$637
This Southwest deal was found by Cheapflights users on 2/23. 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.
Tue 3/247:20 pm
SFO
- SJU
2 stops11h 00m
Southwest
Tue 3/315:15 am
SJU
- SFO
2 stops17h 45m
Southwest
Deal found 2/23![Southwest logo]()
$693
This Southwest deal was found by Cheapflights users on 2/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:50 am
SFO
- SJU
2 stops12h 40m
Southwest
Wed 3/45:40 am
SJU
- SFO
2 stops13h 15m
Southwest
Deal found 2/24![Southwest logo]()
$709
This Delta deal was found by Cheapflights users on 2/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:10 pm
SFO
- SJU
2 stops13h 51m
Delta
Mon 3/91:00 pm
SJU
- SFO
2 stops13h 59m
Delta
Deal found 2/25![Delta logo]()
$723
Last-minute flights from San Francisco to San JuanDiscover last-minute flight deals from San Francisco to San Juan. Data last updated February 26, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to San Juan. Data last updated February 26, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 2/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/210:58 pm
SFO
- SJU
1 stop12h 08m
Multiple Airlines
Mon 3/97:49 pm
SJU
- SFO
1 stop16h 40m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$390
This Trip.com deal was found by Cheapflights users on 2/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/810:40 pm
SFO
- SJU
1 stop12h 37m
Frontier
Wed 3/116:30 am
SJU
- SFO
2 stops15h 44m
Frontier
Deal found 2/24![Frontier logo]()
$385
This Priceline deal was found by Cheapflights users on 2/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:40 pm
SFO
- SJU
1 stop12h 37m
Multiple Airlines
Tue 3/175:19 am
SJU
- SFO
1 stop20h 57m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 2/24. 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.
Tue 3/1010:40 pm
SFO
- SJU
1 stop14h 52m
Multiple Airlines
Fri 3/139:58 pm
SJU
- SFO
2 stops24h 16m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$381
This Priceline deal was found by Cheapflights users on 2/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1610:38 pm
SFO
- SJU
1 stop12h 39m
Multiple Airlines
Thu 3/195:19 am
SJU
- SFO
1 stop20h 57m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 2/24. 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.
Tue 3/1710:40 pm
SFO
- SJU
1 stop18h 10m
Multiple Airlines
Wed 3/256:30 am
SJU
- SFO
2 stops15h 44m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$370
This CheapOair deal was found by Cheapflights users on 2/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2310:38 pm
SFO
- SJU
1 stop12h 39m
Multiple Airlines
Wed 4/87:00 am
SJU
- SFO
2 stops21h 04m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$378
This CheapOair deal was found by Cheapflights users on 2/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2310:38 pm
SFO
- SJU
1 stop12h 39m
Multiple Airlines
Thu 3/265:19 am
SJU
- SFO
1 stop20h 57m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$382
This Frontier deal was found by Cheapflights users on 2/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2410:38 pm
SFO
- SJU
1 stop12h 39m
Frontier
Fri 4/36:00 am
SJU
- SFO
1 stop16h 14m
Frontier
Deal found 2/22![Frontier logo]()
$356
This Orbitz deal was found by Cheapflights users on 2/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3110:38 pm
SFO
- SJU
1 stop9h 42m
Frontier
Mon 4/66:00 am
SJU
- SFO
1 stop16h 19m
Frontier
Deal found 2/23![Frontier logo]()
$384
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 February 26, 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 February 26, 2026.
This Frontier deal was found by Cheapflights users on 2/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2410:38 pm
SFO
- SJU
1 stop12h 39m
Frontier
Deal found 2/25![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 2/24. 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.
Tue 3/1710:40 pm
SFO
- SJU
2 stops24h 18m
Frontier
Deal found 2/24![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/99:24 pm
SFO
- SJU
3 stops17h 34m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 3/168:09 pm
SFO
- SJU
2 stops39h 08m
Frontier
Deal found 2/24![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 2/24. 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.
Tue 3/247:32 pm
SFO
- SJU
2 stops21h 18m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$183
This Orbitz deal was found by Cheapflights users on 2/22. 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.
Sat 2/2811:16 pm
SFO
- SJU
1 stop12h 24m
Frontier
Deal found 2/22![Frontier logo]()
$187
This Southwest deal was found by Cheapflights users on 2/23. 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.
Mon 3/239:20 pm
SFO
- SJU
1 stop15h 15m
Southwest
Deal found 2/23![Southwest logo]()
$193
This KAYAK deal was found by Cheapflights users on 2/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:20 pm
SFO
- SJU
1 stop10h 47m
JetBlue
Deal found 2/25![JetBlue logo]()
$194
This American Airlines deal was found by Cheapflights users on 2/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:45 pm
SFO
- SJU
2 stops11h 28m
American Airlines
Deal found 2/25![American Airlines logo]()
$195
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 February 26, 2026.
Round-trip from | $348 (Kiwi.com) |
|---|---|
One-way from | $178 (Frontier) |
Popular in | December |
Cheapest in | May |
Average price | $499 |
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 February 26, 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
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Tue 3/3
6:05 am-9:12 pm
1 stop11h 07m
San Juan Luis Munoz Marin Intl
Tue 3/10
1:00 pm-11:19 pm
1 stop13h 19m
$436
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Wed 4/15
5:25 am-9:05 pm
2 stops12h 40m
San Juan Luis Munoz Marin Intl
Wed 4/22
5:05 am-7:55 pm
2 stops17h 50m
$467
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Sun 4/12
9:30 pm-12:34 pm
1 stop12h 04m
San Juan Luis Munoz Marin Intl
Thu 4/23
2:55 pm-11:59 pm
1 stop12h 04m
$480
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Sun 4/12
10:38 pm-12:34 pm
1 stop10h 56m
San Juan Luis Munoz Marin Intl
Fri 4/24
4:55 pm-1:17 am
1 stop11h 22m
$480
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Fri 4/17
5:40 am-11:12 pm
2 stops14h 32m
San Juan Luis Munoz Marin Intl
Fri 4/24
2:03 pm-11:54 pm
2 stops12h 51m
$497
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Mon 3/23
11:25 pm-2:45 pm
2 stops12h 20m
San Juan Luis Munoz Marin Intl
Wed 4/8
11:25 am-10:05 pm
2 stops13h 40m
$547
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Sat 4/18
8:00 am-8:49 pm
1 stop9h 49m
San Juan Luis Munoz Marin Intl
Mon 4/20
11:25 pm-10:10 am
1 stop13h 45m
$616
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Tue 4/21
6:20 am-11:12 pm
2 stops13h 52m
San Juan Luis Munoz Marin Intl
Thu 4/30
2:03 pm-11:54 pm
2 stops12h 51m
$637
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Tue 3/24
7:20 pm-9:20 am
2 stops11h 00m
San Juan Luis Munoz Marin Intl
Tue 3/31
5:15 am-8:00 pm
2 stops17h 45m
$693
San FranciscoSan Juan
SFO - SJU
SFOSJU
San Francisco
Sun 3/1
5:50 am-10:30 pm
2 stops12h 40m
San Juan Luis Munoz Marin Intl
Wed 3/4
5:40 am-2:55 pm
2 stops13h 15m
$709
Showing 1-10 of 18 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
How far ahead should I book a flight from San Francisco to San Juan?
Use this chart to determine the optimal time to book a round-trip flight from San Francisco to San Juan. Price data was last updated on February 20, 2026.
The best time to book flights from San Francisco to San Juan is 22 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.
What is the cheapest month to book a flight from San Francisco to San Juan?
Currently, January is the cheapest month in which you can book a flight from San Francisco to San Juan (average of $162). Flying from San Francisco to San Juan in February is currently the most expensive (average of $350). 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?
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 February 26, 2026.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American 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
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Boarding
8.1
Entertainment
7.8
Overall
7.9
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 February 26, 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 February 26, 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 February 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$160 | Average$352 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$404 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$222 | Average$748 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$271 | Average$404 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$329 | Average$428 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$359 | Average$514 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$359 | Average$533 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$398 | Average$628 | FlexibilityNo cancel fee | On-time63% |