Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from San Francisco to San Juan from $133

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 11/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Francisco to San Juan

Cheap round-trip flights

Frontier Logo
11:00 pm - 2:11 pmSFO-SJU
12h 11m1 stop
Frontier Logo
9:26 pm - 1:15 pmSJU-SFO
18h 49m2 stops
$319Frontier
Find Deal
Sat, Sep 27 - Fri, Oct 3
Frontier Logo
11:00 pm - 2:11 pmSFO-SJU
12h 11m1 stop
Frontier Logo
9:26 pm - 1:15 pmSJU-SFO
18h 49m2 stops
$320Frontier
Find Deal
Fri, Sep 26 - Fri, Oct 3
Frontier Logo
10:23 pm - 2:09 pmSFO-SJU
12h 46m1 stop
Frontier Logo
9:00 am - 10:27 pmSJU-SFO
16h 27m2 stops
$321Frontier
Find Deal
Sat, Oct 25 - Wed, Oct 29
Multiple Airlines Logo
10:23 pm - 3:19 pmSFO-SJU
13h 56m1 stop
Multiple Airlines Logo
9:49 pm - 12:09 amSJU-SFO
30h 20m2 stops
$325Multiple Airlines
Find Deal
Sat, Nov 1 - Thu, Nov 6
Frontier Logo
11:00 pm - 2:11 pmSFO-SJU
12h 11m1 stop
Frontier Logo
7:15 am - 9:21 pmSJU-SFO
17h 06m1 stop
$326Frontier
Find Deal
Fri, Sep 26 - Fri, Oct 3
Frontier Logo
10:23 pm - 2:09 pmSFO-SJU
12h 46m1 stop
Frontier Logo
9:00 am - 9:22 pmSJU-SFO
39h 22m2 stops
$330Frontier
Find Deal
Sat, Oct 25 - Tue, Oct 28
Multiple Airlines Logo
10:23 pm - 3:19 pmSFO-SJU
13h 56m1 stop
Multiple Airlines Logo
5:28 pm - 3:07 pmSJU-SFO
25h 39m1 stop
$333Multiple Airlines
Find Deal
Sat, Nov 1 - Thu, Nov 6
JetBlue Logo
11:25 pm - 2:54 pmSFO-SJU
12h 29m1 stop
JetBlue Logo
2:33 pm - 11:59 pmSJU-SFO
13h 26m1 stop
$356JetBlue
Find Deal
Mon, Oct 20 - Wed, Nov 5
JetBlue Logo
10:11 pm - 11:44 amSFO-SJU
10h 33m1 stop
JetBlue Logo
11:30 am - 11:59 pmSJU-SFO
15h 29m1 stop
$357JetBlue
Find Deal
Sat, Oct 25 - Wed, Oct 29
United Airlines Logo
12:43 am - 3:42 pmSFO-SJU
11h 59m1 stop
United Airlines Logo
4:50 pm - 1:15 amSJU-SFO
11h 25m1 stop
$389United Airlines
Find Deal
Mon, Oct 20 - Tue, Oct 28

Frontier flights from San Francisco to San Juan

Our best Frontier deals on San Francisco to San Juan flight tickets
Frontier
Sep 27
SFO11:00 pmSan Francisco
12h 11m
1 stop
SJU2:11 pmSan Juan Luis Munoz Marin Intl
Oct 3
SJU9:26 pmSan Juan Luis Munoz Marin Intl
18h 49m
2 stops
SFO1:15 pmSan Francisco
$319
Find similar
Frontier
Sep 26
SFO11:00 pmSan Francisco
12h 11m
1 stop
SJU2:11 pmSan Juan Luis Munoz Marin Intl
Oct 3
SJU9:26 pmSan Juan Luis Munoz Marin Intl
18h 49m
2 stops
SFO1:15 pmSan Francisco
$320
Find similar
Frontier
Oct 25
SFO10:23 pmSan Francisco
12h 46m
1 stop
SJU2:09 pmSan Juan Luis Munoz Marin Intl
Oct 29
SJU9:00 amSan Juan Luis Munoz Marin Intl
16h 27m
2 stops
SFO10:27 pmSan Francisco
$321
Find similar

United Airlines flights from San Francisco to San Juan

Our best United Airlines deals on San Francisco to San Juan flight tickets
United Airlines
Oct 20
SFO12:43 amSan Francisco
11h 59m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Oct 28
SJU4:50 pmSan Juan Luis Munoz Marin Intl
11h 25m
1 stop
SFO1:15 amSan Francisco
$389
Find similar
United Airlines
Oct 1
SFO7:12 amSan Francisco
10h 26m
1 stop
SJU8:38 pmSan Juan Luis Munoz Marin Intl
Oct 7
SJU3:56 pmSan Juan Luis Munoz Marin Intl
11h 03m
1 stop
SFO11:59 pmSan Francisco
$412
Find similar
United Airlines
Oct 1
SFO7:12 amSan Francisco
10h 26m
1 stop
SJU8:38 pmSan Juan Luis Munoz Marin Intl
Oct 6
SJU1:05 amSan Juan Luis Munoz Marin Intl
11h 55m
1 stop
SFO10:00 amSan Francisco
$447
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
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

Price

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 9/27

11:00 pm-2:11 pm

1 stop12h 11m

San Juan Luis Munoz Marin Intl

Fri 10/3

9:26 pm-1:15 pm

2 stops18h 49m

$319

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 9/26

11:00 pm-2:11 pm

1 stop12h 11m

San Juan Luis Munoz Marin Intl

Fri 10/3

9:26 pm-1:15 pm

2 stops18h 49m

$320

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 10/25

10:23 pm-2:09 pm

1 stop12h 46m

San Juan Luis Munoz Marin Intl

Wed 10/29

9:00 am-10:27 pm

2 stops16h 27m

$321

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 11/1

10:23 pm-3:19 pm

1 stop13h 56m

San Juan Luis Munoz Marin Intl

Thu 11/6

9:49 pm-12:09 am

2 stops30h 20m

$325

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 9/26

11:00 pm-2:11 pm

1 stop12h 11m

San Juan Luis Munoz Marin Intl

Fri 10/3

7:15 am-9:21 pm

1 stop17h 06m

$326

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 10/25

10:23 pm-2:09 pm

1 stop12h 46m

San Juan Luis Munoz Marin Intl

Tue 10/28

9:00 am-9:22 pm

2 stops39h 22m

$330

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 11/1

10:23 pm-3:19 pm

1 stop13h 56m

San Juan Luis Munoz Marin Intl

Thu 11/6

5:28 pm-3:07 pm

1 stop25h 39m

$333

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 10/20

11:25 pm-2:54 pm

1 stop12h 29m

San Juan Luis Munoz Marin Intl

Wed 11/5

2:33 pm-11:59 pm

1 stop13h 26m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 10/25

10:11 pm-11:44 am

1 stop10h 33m

San Juan Luis Munoz Marin Intl

Wed 10/29

11:30 am-11:59 pm

1 stop15h 29m

$357

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 10/20

12:43 am-3:42 pm

1 stop11h 59m

San Juan Luis Munoz Marin Intl

Tue 10/28

4:50 pm-1:15 am

1 stop11h 25m

$389

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Juan from

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 typical price of a round-trip flight between San Francisco and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in January, then May is your next best option. Flight prices from San Francisco to San Juan during May average around $430.

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 weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $499 when searching 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 $445 on momondo.

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

Direct flights

None
There are no direct flights from San Francisco to San Juan. There are no popular flight routes from San Francisco to San Juan.
Search flight deals

  • 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 10h 04m.

  • 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?

  • 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
FrontierPriceFrom $160Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
DeltaPriceFrom $240Free CancellationRating
7.9
7,961 reviews
Search Delta flights
JetBluePriceFrom $298Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
Sun Country AirPriceFrom $310Free CancellationRating
6.9
330 reviews
Search Sun Country Air flights
American AirlinesPriceFrom $346Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $357Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
SouthwestPriceFrom $486Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

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.

An easier way to manage your San Juan trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/17
Fri 10/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport