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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 12/8. 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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0 bags

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Cheap round-trip flights

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Multiple Airlines Logo
10:49 am - 12:35 amSFO-SJU
9h 46m1 stop
Multiple Airlines Logo
7:06 pm - 11:52 pmSJU-SFO
32h 46m2 stops
$354Multiple Airlines
Find Deal
Sun, Dec 14 - Sat, Dec 20
Southwest Logo
7:40 am - 12:35 amSFO-SJU
12h 55m2 stops
Southwest Logo
5:45 am - 2:40 pmSJU-SFO
12h 55m2 stops
$355Southwest
Find Deal
Wed, Dec 10 - Wed, Dec 17
JetBlue Logo
8:26 am - 1:22 amSFO-SJU
12h 56m1 stop
JetBlue Logo
8:15 am - 5:13 pmSJU-SFO
12h 58m1 stop
$356JetBlue
Find Deal
Fri, Feb 6 - Wed, Feb 11
Delta Logo
7:08 pm - 12:58 pmSFO-SJU
13h 50m2 stops
Delta Logo
7:19 am - 10:13 pmSJU-SFO
18h 54m2 stops
$357Delta
Find Deal
Fri, Dec 5 - Fri, Dec 12
Frontier Logo
11:20 pm - 1:21 amSFO-SJU
22h 01m1 stop
Frontier Logo
3:58 am - 10:05 pmSJU-SFO
22h 07m2 stops
$358Frontier
Find Deal
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
11:16 am - 6:34 amSFO-SJU
15h 18m1 stop
Frontier Logo
7:01 pm - 12:25 amSJU-SFO
33h 24m2 stops
$360Frontier
Find Deal
Tue, Jan 6 - Sun, Jan 11
Delta Logo
10:54 pm - 2:10 pmSFO-SJU
11h 16m1 stop
Delta Logo
6:15 am - 5:43 pmSJU-SFO
15h 28m1 stop
$362Delta
Find Deal
Sun, Jan 11 - Sat, Jan 24
American Airlines Logo
12:00 pm - 10:09 amSFO-SJU
18h 09m2 stops
American Airlines Logo
6:44 am - 8:09 pmSJU-SFO
17h 25m2 stops
$363American Airlines
Find Deal
Tue, Dec 9 - Thu, Dec 18
Multiple Airlines Logo
10:49 am - 12:35 amSFO-SJU
9h 46m1 stop
Multiple Airlines Logo
1:59 am - 7:53 amSJU-SFO
33h 54m2 stops
$364Multiple Airlines
Find Deal
Fri, Dec 5 - Sat, Dec 13
Frontier Logo
10:49 am - 9:55 amSFO-SJU
19h 06m2 stops
Frontier Logo
4:31 pm - 1:18 pmSJU-SFO
24h 47m1 stop
$365Frontier
Find Deal
Fri, Dec 5 - Thu, Dec 11

American Airlines flights from San Francisco to San Juan

Our best American Airlines deals on San Francisco to San Juan flight tickets
American Airlines
Dec 9
SFO12:00 pmSan Francisco
18h 09m
2 stops
SJU10:09 amSan Juan Luis Munoz Marin Intl
Dec 18
SJU6:44 amSan Juan Luis Munoz Marin Intl
17h 00m
1 stop
SFO7:44 pmSan Francisco
$363
Find similar
American Airlines
Apr 20
SFO12:21 amSan Francisco
11h 04m
1 stop
SJU2:25 pmSan Juan Luis Munoz Marin Intl
Apr 30
SJU8:30 amSan Juan Luis Munoz Marin Intl
17h 22m
1 stop
SFO10:52 pmSan Francisco
$369
Find similar
American Airlines
Nov 27
SFO11:59 pmSan Francisco
9h 06m
1 stop
SJU1:05 pmSan Juan Luis Munoz Marin Intl
Dec 5
SJU7:00 amSan Juan Luis Munoz Marin Intl
18h 30m
2 stops
SFO9:30 pmSan Francisco
$386
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
Dec 10
SFO6:00 amSan Francisco
11h 00m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Dec 10
SJU2:05 amSan Juan Luis Munoz Marin Intl
12h 12m
1 stop
SFO10:17 amSan Francisco
$374
Find similar
United Airlines
Feb 24
SFO6:45 amSan Francisco
13h 51m
2 stops
SJU12:36 amSan Juan Luis Munoz Marin Intl
Mar 2
SJU2:05 amSan Juan Luis Munoz Marin Intl
16h 02m
2 stops
SFO2:07 pmSan Francisco
$378
Find similar
United Airlines
Dec 6
SFO12:43 amSan Francisco
11h 53m
1 stop
SJU4:36 pmSan Juan Luis Munoz Marin Intl
Dec 10
SJU2:05 amSan Juan Luis Munoz Marin Intl
12h 12m
1 stop
SFO10:17 amSan Francisco
$383
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 13, 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 12/14

10:49 am-12:35 am

1 stop9h 46m

San Juan Luis Munoz Marin Intl

Sat 12/20

7:06 pm-11:52 pm

2 stops32h 46m

$354

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 12/10

7:40 am-12:35 am

2 stops12h 55m

San Juan Luis Munoz Marin Intl

Wed 12/17

5:45 am-2:40 pm

2 stops12h 55m

$355

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 2/6

8:26 am-1:22 am

1 stop12h 56m

San Juan Luis Munoz Marin Intl

Wed 2/11

8:15 am-5:13 pm

1 stop12h 58m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 12/5

7:08 pm-12:58 pm

2 stops13h 50m

San Juan Luis Munoz Marin Intl

Fri 12/12

7:19 am-10:13 pm

2 stops18h 54m

$357

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Thu 1/8

11:20 pm-1:21 am

1 stop22h 01m

San Juan Luis Munoz Marin Intl

Mon 1/12

3:58 am-10:05 pm

2 stops22h 07m

$358

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 1/6

11:16 am-6:34 am

1 stop15h 18m

San Juan Luis Munoz Marin Intl

Sun 1/11

7:01 pm-12:25 am

2 stops33h 24m

$360

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 1/11

10:54 pm-2:10 pm

1 stop11h 16m

San Juan Luis Munoz Marin Intl

Sat 1/24

6:15 am-5:43 pm

1 stop15h 28m

$362

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 12/9

12:00 pm-10:09 am

2 stops18h 09m

San Juan Luis Munoz Marin Intl

Thu 12/18

6:44 am-8:09 pm

2 stops17h 25m

$363

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 12/5

10:49 am-12:35 am

1 stop9h 46m

San Juan Luis Munoz Marin Intl

Sat 12/13

1:59 am-7:53 am

2 stops33h 54m

$364

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 12/5

10:49 am-9:55 am

2 stops19h 06m

San Juan Luis Munoz Marin Intl

Thu 12/11

4:31 pm-1:18 pm

1 stop24h 47m

$365

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 October is your next best option. Flight prices from San Francisco to San Juan during October average around $439.

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 $491 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 $432 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 06m.

  • 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
3,114 reviews
Search Frontier flights
DeltaPriceFrom $240Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Sun Country AirPriceFrom $286Free CancellationRating
6.9
336 reviews
Search Sun Country Air flights
JetBluePriceFrom $317Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
American AirlinesPriceFrom $349Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $366Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
SouthwestPriceFrom $412Free CancellationRating
8.0
4,235 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