Cheap flights from San Francisco to San Juan from $120
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to San Juan departing on 11/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from San Francisco to San Juan
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How to get the cheapest flight ticket from San Francisco to San Juan
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Juan?
If you’re not able to fly to San Juan in September, then January is your next best option. Flight prices from San Francisco to San Juan during January average around $427.
What is the cheapest day to depart on your flight to San Juan?
The cheapest day to depart from San Francisco to San Juan is on a Tuesday when prices can be found for as low as $456. The most expensive day to fly to San Juan is Friday, with ticket prices averaging around $573.
What is the cheapest time of day to depart on your flight to San Juan?
The cheapest time of day to fly to San Juan is at noon when flights can be purchased for as low as $377. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $549 on average. Flights to San Juan from San Francisco in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to San Juan?
You are more likely to see cheaper flights to San Juan from San Francisco when booking 10 weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $502 when searching 10 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from San Francisco for as low as $450 on momondo.
What is the cheapest airline that flies from San Francisco to San Juan?
Frontier, JetBlue, and Delta are the most popular carriers operating from San Francisco to San Juan
What airlines fly to San Juan?
American Airlines, JetBlue and United Airlines are the top three most popular airlines that fly to San Juan from San Francisco according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to San Juan. Keep in mind that there are 8 different airlines that fly to San Juan on a routine basis, so you have a few additional options to choose from.
Cheap San Francisco to San Juan flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to San Juan
How far is San Francisco to San Juan by plane?
San Francisco and San Juan are 3619.0 mi apart from one another. In terms of flight time, this usually takes a little over 8h 30m.
When did momondo last update prices for flights from San Francisco Airport to San Juan?
Prices for flights from San Francisco Airport to San Juan are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to San Juan?
As of June 2025, there are 7 operators available to choose from for flights from San Francisco Airport to San Juan.
How old do you have to be to fly from San Francisco Airport to San Juan?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to San Juan.
What documentation or ID do you need to fly to San Juan?
The travel and health documents required for your trip to San Juan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from San Francisco to San Juan
Compare and see reviews for airlines that fly from San Francisco to San Juan with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $160 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $242 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $277 | Free Cancellation | Rating 7.3 2,925 reviews | |||
| PriceFrom $325 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $326 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $334 | Free Cancellation | Rating 6.9 345 reviews | |||
| PriceFrom $486 | Free Cancellation | Rating 8.0 4,287 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Francisco to San Juan?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to San Juan for you.
Can I find flights from San Francisco to San Juan with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to San Juan from San Francisco with this policy.
How can momondo help me find flights from San Francisco to San Juan?
momondo helps you find the best flight between San Francisco and San Juan by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from San Francisco to San Juan right now. Can momondo alert me if prices change?
Yes. momondo can track prices for San Francisco to San Juan flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.