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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 1/12. 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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Find the cheapest flights from San Francisco to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
10:39 am - 12:59 amSFO-SJU
10h 20m1 stop
JetBlue Logo
8:00 am - 11:58 pmSJU-SFO
19h 58m1 stop
$341JetBlue
Find Deal
Tue, Feb 24 - Tue, Mar 3
JetBlue Logo
11:00 am - 12:59 amSFO-SJU
9h 59m1 stop
JetBlue Logo
5:10 am - 4:42 pmSJU-SFO
15h 32m1 stop
$344JetBlue
Find Deal
Wed, Feb 18 - Wed, Feb 25
Frontier Logo
7:00 am - 12:13 amSFO-SJU
37h 13m2 stops
Frontier Logo
4:35 pm - 1:24 pmSJU-SFO
24h 49m1 stop
$351Frontier
Find Deal
Sat, Jan 10 - Thu, Jan 15
Frontier Logo
11:28 pm - 12:37 amSFO-SJU
21h 09m1 stop
Frontier Logo
4:36 pm - 12:28 amSJU-SFO
35h 52m2 stops
$352Frontier
Find Deal
Fri, Jan 9 - Thu, Jan 22
JetBlue Logo
7:00 am - 11:44 pmSFO-SJU
12h 44m1 stop
JetBlue Logo
6:00 am - 9:29 amSJU-SFO
31h 29m1 stop
$353JetBlue
Find Deal
Tue, Feb 24 - Tue, Mar 3
JetBlue Logo
8:25 am - 10:51 pmSFO-SJU
11h 26m1 stop
JetBlue Logo
6:30 pm - 9:35 amSJU-SFO
18h 05m1 stop
$354JetBlue
Find Deal
Mon, Mar 23 - Tue, Mar 31
JetBlue Logo
11:59 pm - 3:30 pmSFO-SJU
11h 31m1 stop
JetBlue Logo
6:00 am - 5:13 pmSJU-SFO
15h 13m1 stop
$355JetBlue
Find Deal
Sat, Jan 31 - Tue, Feb 10
Frontier Logo
11:28 pm - 12:37 amSFO-SJU
21h 09m1 stop
Frontier Logo
6:55 am - 11:00 amSJU-SFO
32h 05m2 stops
$356Frontier
Find Deal
Fri, Jan 9 - Thu, Jan 15
JetBlue Logo
10:45 am - 2:55 amSFO-SJU
13h 10m1 stop
JetBlue Logo
2:40 pm - 12:13 amSJU-SFO
12h 33m1 stop
$358JetBlue
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Tue, Apr 21 - Wed, Apr 22
American Airlines Logo
5:05 pm - 3:04 pmSFO-SJU
17h 59m1 stop
American Airlines Logo
7:07 am - 5:24 pmSJU-SFO
14h 17m1 stop
$359American Airlines
Find Deal
Sun, Jan 11 - Fri, Jan 16

American Airlines flights from San Francisco to San Juan

Our best American Airlines deals on San Francisco to San Juan flight tickets
American Airlines
Jan 11
SFO5:05 pmSan Francisco
17h 59m
1 stop
SJU3:04 pmSan Juan Luis Munoz Marin Intl
Jan 16
SJU7:07 amSan Juan Luis Munoz Marin Intl
14h 17m
1 stop
SFO5:24 pmSan Francisco
$359
Find similar
American Airlines
Jan 31
SFO7:00 amSan Francisco
9h 50m
1 stop
SJU8:50 pmSan Juan Luis Munoz Marin Intl
Feb 9
SJU6:00 amSan Juan Luis Munoz Marin Intl
12h 37m
1 stop
SFO2:37 pmSan Francisco
$370
Find similar
American Airlines
Dec 10
SFO6:30 amSan Francisco
13h 22m
1 stop
SJU11:52 pmSan Juan Luis Munoz Marin Intl
Jan 13
SJU1:24 pmSan Juan Luis Munoz Marin Intl
14h 12m
1 stop
SFO11:36 pmSan Francisco
$382
Find similar

JetBlue flights from San Francisco to San Juan

Our best JetBlue deals on San Francisco to San Juan flight tickets
JetBlue
Feb 24
SFO10:39 amSan Francisco
10h 20m
1 stop
SJU12:59 amSan Juan Luis Munoz Marin Intl
Mar 3
SJU8:00 amSan Juan Luis Munoz Marin Intl
19h 58m
1 stop
SFO11:58 pmSan Francisco
$341
Find similar
JetBlue
Feb 18
SFO11:00 amSan Francisco
9h 59m
1 stop
SJU12:59 amSan Juan Luis Munoz Marin Intl
Feb 25
SJU5:10 amSan Juan Luis Munoz Marin Intl
15h 32m
1 stop
SFO4:42 pmSan Francisco
$344
Find similar
JetBlue
Feb 24
SFO7:00 amSan Francisco
12h 44m
1 stop
SJU11:44 pmSan Juan Luis Munoz Marin Intl
Mar 3
SJU6:00 amSan Juan Luis Munoz Marin Intl
31h 29m
1 stop
SFO9:29 amSan Francisco
$353
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 December 2, 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

Tue 2/24

10:39 am-12:59 am

1 stop10h 20m

San Juan Luis Munoz Marin Intl

Tue 3/3

8:00 am-11:58 pm

1 stop19h 58m

$341

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 2/18

11:00 am-12:59 am

1 stop9h 59m

San Juan Luis Munoz Marin Intl

Wed 2/25

5:10 am-4:42 pm

1 stop15h 32m

$344

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 1/10

7:00 am-12:13 am

2 stops37h 13m

San Juan Luis Munoz Marin Intl

Thu 1/15

4:35 pm-1:24 pm

1 stop24h 49m

$351

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 1/9

11:28 pm-12:37 am

1 stop21h 09m

San Juan Luis Munoz Marin Intl

Thu 1/22

4:36 pm-12:28 am

2 stops35h 52m

$352

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 2/24

7:00 am-11:44 pm

1 stop12h 44m

San Juan Luis Munoz Marin Intl

Tue 3/3

6:00 am-9:29 am

1 stop31h 29m

$353

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 3/23

8:25 am-10:51 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Tue 3/31

6:30 pm-9:35 am

1 stop18h 05m

$354

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 1/31

11:59 pm-3:30 pm

1 stop11h 31m

San Juan Luis Munoz Marin Intl

Tue 2/10

6:00 am-5:13 pm

1 stop15h 13m

$355

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 1/9

11:28 pm-12:37 am

1 stop21h 09m

San Juan Luis Munoz Marin Intl

Thu 1/15

6:55 am-11:00 am

2 stops32h 05m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 4/21

10:45 am-2:55 am

1 stop13h 10m

San Juan Luis Munoz Marin Intl

Wed 4/22

2:40 pm-12:13 am

1 stop12h 33m

$358

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 1/11

5:05 pm-3:04 pm

1 stop17h 59m

San Juan Luis Munoz Marin Intl

Fri 1/16

7:07 am-5:24 pm

1 stop14h 17m

$359

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 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 $490 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

Fastest flight time

9h 25m

Direct flights

None
The fastest flight from San Francisco to San Juan takes 9h 25m
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 50m.

  • 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
3,094 reviews
Search Frontier flights
DeltaPriceFrom $240Free CancellationRating
7.9
8,013 reviews
Search Delta flights
Sun Country AirPriceFrom $286Free CancellationRating
6.9
331 reviews
Search Sun Country Air flights
JetBluePriceFrom $318Free CancellationRating
7.2
2,903 reviews
Search JetBlue flights
American AirlinesPriceFrom $349Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
United AirlinesPriceFrom $366Free CancellationRating
7.4
9,063 reviews
Search United Airlines flights
SouthwestPriceFrom $412Free CancellationRating
8.0
4,253 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