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Cheap flights from San Francisco to San Juan from $178

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 2/3. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:30 pm - 12:45 pmSFO-SJU
10h 15m1 stop
Delta Logo
7:00 am - 6:16 pmSJU-SFO
15h 16m1 stop
$357Delta
Find Deal
Sun, Dec 7 - Fri, Dec 19
Frontier Logo
8:48 am - 12:49 amSFO-SJU
36h 01m2 stops
Frontier Logo
4:21 pm - 1:13 pmSJU-SFO
24h 52m1 stop
$358Frontier
Find Deal
Fri, Dec 5 - Thu, Dec 18
American Airlines Logo
12:25 am - 10:05 pmSFO-SJU
17h 40m1 stop
American Airlines Logo
2:31 pm - 9:39 pmSJU-SFO
11h 08m1 stop
$368American Airlines
Find Deal
Sat, Dec 6 - Thu, Dec 18
American Airlines Logo
10:59 pm - 6:22 pmSFO-SJU
15h 23m1 stop
American Airlines Logo
3:59 pm - 9:17 amSJU-SFO
21h 18m1 stop
$369American Airlines
Find Deal
Sun, Jan 11 - Tue, Jan 20
JetBlue Logo
8:15 am - 11:54 pmSFO-SJU
11h 39m1 stop
JetBlue Logo
1:53 pm - 11:44 pmSJU-SFO
13h 51m1 stop
$371JetBlue
Find Deal
Tue, Dec 9 - Sat, Dec 13
United Airlines Logo
5:10 am - 6:25 pmSFO-SJU
9h 15m1 stop
United Airlines Logo
2:05 am - 10:55 amSJU-SFO
12h 50m1 stop
$373United Airlines
Find Deal
Tue, Mar 3 - Tue, Mar 3
JetBlue Logo
11:59 pm - 10:32 amSFO-SJU
30h 33m1 stop
JetBlue Logo
2:00 pm - 11:59 pmSJU-SFO
13h 59m1 stop
$374JetBlue
Find Deal
Sun, Jan 18 - Fri, Jan 23
United Airlines Logo
8:25 am - 10:22 pmSFO-SJU
9h 57m1 stop
United Airlines Logo
5:50 pm - 1:15 amSJU-SFO
11h 25m1 stop
$375United Airlines
Find Deal
Wed, Dec 10 - Mon, Dec 15
Southwest Logo
6:10 am - 10:20 pmSFO-SJU
12h 10m2 stops
Southwest Logo
5:40 am - 2:50 pmSJU-SFO
13h 10m2 stops
$379Southwest
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Sun, Dec 7 - Sat, Dec 13
Southwest Logo
6:15 am - 9:40 pmSFO-SJU
11h 25m2 stops
Southwest Logo
11:40 am - 11:55 pmSJU-SFO
16h 15m1 stop
$403Southwest
Find Deal
Sat, Feb 28 - Sat, Mar 7

Delta flights from San Francisco to San Juan

Our best Delta deals on San Francisco to San Juan flight tickets
Delta
Dec 7
SFO10:30 pmSan Francisco
10h 15m
1 stop
SJU12:45 pmSan Juan Luis Munoz Marin Intl
Dec 19
SJU7:00 amSan Juan Luis Munoz Marin Intl
15h 16m
1 stop
SFO6:16 pmSan Francisco
$357
Find similar
Delta
Jan 12
SFO7:15 pmSan Francisco
15h 15m
2 stops
SJU2:30 pmSan Juan Luis Munoz Marin Intl
Jan 17
SJU6:15 amSan Juan Luis Munoz Marin Intl
18h 44m
2 stops
SFO8:59 pmSan Francisco
$363
Find similar
Delta
Jan 24
SFO8:00 amSan Francisco
11h 44m
1 stop
SJU11:44 pmSan Juan Luis Munoz Marin Intl
Jan 29
SJU3:55 pmSan Juan Luis Munoz Marin Intl
11h 42m
1 stop
SFO11:37 pmSan Francisco
$415
Find similar

Frontier flights from San Francisco to San Juan

Our best Frontier deals on San Francisco to San Juan flight tickets
Frontier
Dec 5
SFO8:48 amSan Francisco
36h 01m
2 stops
SJU12:49 amSan Juan Luis Munoz Marin Intl
Dec 18
SJU4:21 pmSan Juan Luis Munoz Marin Intl
24h 52m
1 stop
SFO1:13 pmSan Francisco
$358
Find similar
Frontier
Dec 31
SFO11:20 pmSan Francisco
11h 41m
1 stop
SJU3:01 pmSan Juan Luis Munoz Marin Intl
Jan 8
SJU7:01 pmSan Juan Luis Munoz Marin Intl
16h 48m
1 stop
SFO7:49 amSan Francisco
$361
Find similar
Frontier
Dec 6
SFO11:33 pmSan Francisco
11h 48m
1 stop
SJU3:21 pmSan Juan Luis Munoz Marin Intl
Dec 12
SJU3:55 amSan Juan Luis Munoz Marin Intl
21h 55m
2 stops
SFO9:50 pmSan Francisco
$367
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 November 6, 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

Sun 12/7

10:30 pm-12:45 pm

1 stop10h 15m

San Juan Luis Munoz Marin Intl

Fri 12/19

7:00 am-6:16 pm

1 stop15h 16m

$357

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 12/5

8:48 am-12:49 am

2 stops36h 01m

San Juan Luis Munoz Marin Intl

Thu 12/18

4:21 pm-1:13 pm

1 stop24h 52m

$358

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 12/6

12:25 am-10:05 pm

1 stop17h 40m

San Juan Luis Munoz Marin Intl

Thu 12/18

2:31 pm-9:39 pm

1 stop11h 08m

$368

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 1/11

10:59 pm-6:22 pm

1 stop15h 23m

San Juan Luis Munoz Marin Intl

Tue 1/20

3:59 pm-9:17 am

1 stop21h 18m

$369

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 12/9

8:15 am-11:54 pm

1 stop11h 39m

San Juan Luis Munoz Marin Intl

Sat 12/13

1:53 pm-11:44 pm

1 stop13h 51m

$371

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 3/3

5:10 am-6:25 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Tue 3/3

2:05 am-10:55 am

1 stop12h 50m

$373

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 1/18

11:59 pm-10:32 am

1 stop30h 33m

San Juan Luis Munoz Marin Intl

Fri 1/23

2:00 pm-11:59 pm

1 stop13h 59m

$374

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 12/10

8:25 am-10:22 pm

1 stop9h 57m

San Juan Luis Munoz Marin Intl

Mon 12/15

5:50 pm-1:15 am

1 stop11h 25m

$375

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 12/7

6:10 am-10:20 pm

2 stops12h 10m

San Juan Luis Munoz Marin Intl

Sat 12/13

5:40 am-2:50 pm

2 stops13h 10m

$379

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 2/28

6:15 am-9:40 pm

2 stops11h 25m

San Juan Luis Munoz Marin Intl

Sat 3/7

11:40 am-11:55 pm

1 stop16h 15m

$403

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 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 May, then January is your next best option. Flight prices from San Francisco to San Juan during January average around $440.

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 $501 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 $444 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 15m.

  • 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
3,115 reviews
Search Frontier flights
DeltaPriceFrom $240Free CancellationRating
7.9
8,001 reviews
Search Delta flights
Sun Country AirPriceFrom $286Free CancellationRating
6.9
335 reviews
Search Sun Country Air flights
JetBluePriceFrom $317Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
American AirlinesPriceFrom $349Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $366Free CancellationRating
7.4
9,005 reviews
Search United Airlines flights
SouthwestPriceFrom $412Free CancellationRating
8.0
4,240 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