Cheap flights from San Francisco (SFO) to San Juan (SJU)
Cheapest round-trip I’ve found: US$431 on Frontier, 1 stop(s), departing 2026-10-21. That’s US$31 below the typical price for this route.
Deal score: Not enough data yet
1stops
12h 58mflight time
Oct 2026cheapest departure window
US$462typical price
Best months to fly San Francisco to San Juan
| Month | Cheapest seen |
|---|---|
| October | US$431 |
How to book this fare
I don’t sell tickets — I track prices and point you to where to look. To book this fare:
- Search San Francisco to San Juan on Google Flights for the dates shown above (Oct 2026) — the fare I found is usually still available there.
- Compare the same dates on metasearch sites like Skyscanner or KAYAK to confirm you’re seeing the lowest price.
- Book directly with the airline when you can — it’s often the same price and makes changes or cancellations much easier.
Fares change constantly. If the price has moved, check back — I re-check this route daily.
Other cheap flights from San Francisco
- San Francisco to Paris — US$799
- San Francisco to Amsterdam — US$822
- San Francisco to San Jose — US$504
- San Francisco to Lisbon — US$678
- San Francisco to Dublin — US$666
- San Francisco to Seoul — US$872
- San Francisco to Madrid — US$730
- San Francisco to Delhi — US$1,007
Prices last checked: 2026-07-24, 10:07:52 p.m.. Prices are indicative and change quickly — confirm on the airline site before booking. See how I find these deals.