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Cheap flights from San Francisco to San Juan from $134

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 9/7. 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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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
7:15 am - 9:21 pmSJU-SFO
17h 06m1 stop
$278Frontier
Find Deal
Sat, Sep 13 - Fri, Sep 19
Frontier Logo
10:49 am - 9:56 amSFO-SJU
20h 07m2 stops
Frontier Logo
8:00 am - 11:02 pmSJU-SFO
18h 02m2 stops
$289Frontier
Find Deal
Sat, Sep 20 - Mon, Sep 29
JetBlue Logo
10:00 pm - 12:17 pmSFO-SJU
11h 17m1 stop
JetBlue Logo
1:25 pm - 12:59 amSJU-SFO
14h 34m1 stop
$356JetBlue
Find Deal
Mon, Sep 22 - Thu, Sep 25
JetBlue Logo
6:00 am - 9:24 pmSFO-SJU
12h 24m1 stop
JetBlue Logo
2:25 pm - 12:59 amSJU-SFO
13h 34m1 stop
$358JetBlue
Find Deal
Wed, Oct 8 - Wed, Oct 15
American Airlines Logo
6:00 am - 11:59 pmSFO-SJU
14h 59m1 stop
American Airlines Logo
7:00 am - 6:58 pmSJU-SFO
14h 58m1 stop
$364American Airlines
Find Deal
Tue, Oct 14 - Wed, Oct 15
American Airlines Logo
12:47 am - 6:14 pmSFO-SJU
14h 27m2 stops
American Airlines Logo
12:01 pm - 11:09 pmSJU-SFO
14h 08m2 stops
$368American Airlines
Find Deal
Tue, Sep 23 - Wed, Oct 1
United Airlines Logo
11:25 pm - 1:45 pmSFO-SJU
11h 20m1 stop
United Airlines Logo
4:55 pm - 12:55 amSJU-SFO
11h 00m1 stop
$369United Airlines
Find Deal
Tue, Sep 30 - Wed, Oct 15
Delta Logo
6:00 am - 11:17 pmSFO-SJU
13h 17m1 stop
Delta Logo
7:30 am - 2:42 pmSJU-SFO
11h 12m1 stop
$379Delta
Find Deal
Sat, Dec 6 - Sat, Dec 13
United Airlines Logo
5:00 am - 5:30 pmSFO-SJU
9h 30m1 stop
United Airlines Logo
7:00 am - 4:30 pmSJU-SFO
12h 30m1 stop
$383United Airlines
Find Deal
Sat, Sep 20 - Tue, Sep 30
Delta Logo
7:30 am - 11:17 pmSFO-SJU
11h 47m1 stop
Delta Logo
7:30 am - 2:47 pmSJU-SFO
11h 17m1 stop
$392Delta
Find Deal
Wed, Dec 3 - Wed, Dec 10

Frontier flights from San Francisco to San Juan

Our best Frontier deals on San Francisco to San Juan flight tickets
Frontier
Sep 13
SFO11:00 pmSan Francisco
12h 11m
1 stop
SJU2:11 pmSan Juan Luis Munoz Marin Intl
Sep 19
SJU7:15 amSan Juan Luis Munoz Marin Intl
17h 06m
1 stop
SFO9:21 pmSan Francisco
$278
Find similar
Frontier
Sep 20
SFO10:49 amSan Francisco
20h 07m
2 stops
SJU9:56 amSan Juan Luis Munoz Marin Intl
Sep 29
SJU8:00 amSan Juan Luis Munoz Marin Intl
18h 02m
2 stops
SFO11:02 pmSan Francisco
$289
Find similar
Frontier
Dec 8
SFO11:17 pmSan Francisco
11h 37m
1 stop
SJU2:54 pmSan Juan Luis Munoz Marin Intl
Dec 18
SJU7:25 amSan Juan Luis Munoz Marin Intl
13h 50m
1 stop
SFO5:15 pmSan Francisco
$306
Find similar

Delta flights from San Francisco to San Juan

Our best Delta deals on San Francisco to San Juan flight tickets
Delta
Dec 6
SFO6:00 amSan Francisco
13h 17m
1 stop
SJU11:17 pmSan Juan Luis Munoz Marin Intl
Dec 13
SJU7:30 amSan Juan Luis Munoz Marin Intl
11h 12m
1 stop
SFO2:42 pmSan Francisco
$379
Find similar
Delta
Dec 3
SFO7:30 amSan Francisco
11h 47m
1 stop
SJU11:17 pmSan Juan Luis Munoz Marin Intl
Dec 10
SJU7:30 amSan Juan Luis Munoz Marin Intl
11h 17m
1 stop
SFO2:47 pmSan Francisco
$392
Find similar
Delta
Nov 9
SFO7:06 pmSan Francisco
13h 40m
2 stops
SJU12:46 pmSan Juan Luis Munoz Marin Intl
Nov 18
SJU7:15 amSan Juan Luis Munoz Marin Intl
19h 14m
2 stops
SFO10:29 pmSan Francisco
$402
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 August 26, 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 9/13

11:00 pm-2:11 pm

1 stop12h 11m

San Juan Luis Munoz Marin Intl

Fri 9/19

7:15 am-9:21 pm

1 stop17h 06m

$278

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 9/20

10:49 am-9:56 am

2 stops20h 07m

San Juan Luis Munoz Marin Intl

Mon 9/29

8:00 am-11:02 pm

2 stops18h 02m

$289

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 9/22

10:00 pm-12:17 pm

1 stop11h 17m

San Juan Luis Munoz Marin Intl

Thu 9/25

1:25 pm-12:59 am

1 stop14h 34m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 10/8

6:00 am-9:24 pm

1 stop12h 24m

San Juan Luis Munoz Marin Intl

Wed 10/15

2:25 pm-12:59 am

1 stop13h 34m

$358

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 10/14

6:00 am-11:59 pm

1 stop14h 59m

San Juan Luis Munoz Marin Intl

Wed 10/15

7:00 am-6:58 pm

1 stop14h 58m

$364

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 9/23

12:47 am-6:14 pm

2 stops14h 27m

San Juan Luis Munoz Marin Intl

Wed 10/1

12:01 pm-11:09 pm

2 stops14h 08m

$368

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 9/30

11:25 pm-1:45 pm

1 stop11h 20m

San Juan Luis Munoz Marin Intl

Wed 10/15

4:55 pm-12:55 am

1 stop11h 00m

$369

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 12/6

6:00 am-11:17 pm

1 stop13h 17m

San Juan Luis Munoz Marin Intl

Sat 12/13

7:30 am-2:42 pm

1 stop11h 12m

$379

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 9/20

5:00 am-5:30 pm

1 stop9h 30m

San Juan Luis Munoz Marin Intl

Tue 9/30

7:00 am-4:30 pm

1 stop12h 30m

$383

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 12/3

7:30 am-11:17 pm

1 stop11h 47m

San Juan Luis Munoz Marin Intl

Wed 12/10

7:30 am-2:47 pm

1 stop11h 17m

$392

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in May, then January is your next best option. Flight prices from San Francisco to San Juan during January average around $432.

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 $498 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 $443 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 9h 13m.

  • 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
3,200 reviews
Search Frontier flights
DeltaPriceFrom $242Free CancellationRating
7.9
7,979 reviews
Search Delta flights
JetBluePriceFrom $296Free CancellationRating
7.2
2,918 reviews
Search JetBlue flights
Sun Country AirPriceFrom $337Free CancellationRating
6.9
332 reviews
Search Sun Country Air flights
American AirlinesPriceFrom $344Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $348Free CancellationRating
7.4
8,943 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.

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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