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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 3/2. 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

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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.
Frontier Logo
6:00 am - 11:54 pm
SFO
-
SJU
14h 54m
2 stops
Frontier Logo
6:00 am - 7:14 pm
SJU
-
SFO
16h 14m
1 stop
$342Frontier
Tue, Apr 7 - Wed, Apr 8
JetBlue Logo
11:59 pm - 3:30 pm
SFO
-
SJU
11h 31m
1 stop
JetBlue Logo
2:55 pm - 11:57 pm
SJU
-
SFO
13h 02m
1 stop
$343JetBlue
Sat, Feb 7 - Wed, Feb 18
JetBlue Logo
8:00 am - 10:05 pm
SFO
-
SJU
11h 05m
1 stop
JetBlue Logo
6:30 pm - 11:09 am
SJU
-
SFO
19h 39m
1 stop
$344JetBlue
Mon, May 4 - Thu, May 7
Multiple Airlines Logo
10:58 pm - 3:06 pm
SFO
-
SJU
12h 08m
1 stop
Multiple Airlines Logo
10:55 am - 7:34 pm
SJU
-
SFO
12h 39m
1 stop
$349Multiple Airlines
Mon, Feb 23 - Fri, Feb 27
Multiple Airlines Logo
10:40 pm - 4:32 pm
SFO
-
SJU
14h 52m
1 stop
Multiple Airlines Logo
6:30 am - 9:38 pm
SJU
-
SFO
42h 08m
2 stops
$350Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
11:16 pm - 3:40 pm
SFO
-
SJU
12h 24m
1 stop
Multiple Airlines Logo
8:49 pm - 9:29 am
SJU
-
SFO
16h 40m
1 stop
$351Multiple Airlines
Sat, Feb 28 - Mon, Mar 2
Multiple Airlines Logo
10:03 pm - 11:20 am
SFO
-
SJU
10h 17m
1 stop
Multiple Airlines Logo
11:59 pm - 10:05 am
SJU
-
SFO
13h 06m
1 stop
$352Multiple Airlines
Thu, Apr 9 - Mon, Apr 13
JetBlue Logo
12:20 pm - 2:07 am
SFO
-
SJU
10h 47m
1 stop
JetBlue Logo
7:40 am - 11:09 am
SJU
-
SFO
30h 29m
1 stop
$355JetBlue
Tue, Apr 21 - Tue, Apr 28
Frontier Logo
10:38 pm - 2:17 pm
SFO
-
SJU
12h 39m
1 stop
Frontier Logo
6:00 am - 7:14 pm
SJU
-
SFO
16h 14m
1 stop
$356Frontier
Mon, Mar 23 - Wed, Apr 1
Multiple Airlines Logo
10:38 pm - 2:12 pm
SFO
-
SJU
12h 34m
1 stop
Multiple Airlines Logo
5:35 pm - 12:58 am
SJU
-
SFO
10h 23m
1 stop
$358Multiple Airlines
Mon, Mar 23 - Tue, Mar 31

JetBlue flights from San Francisco to San Juan

Our best JetBlue deals on San Francisco to San Juan flight tickets
JetBlue
Feb 7
SFO11:59 pmSan Francisco
11h 31m
1 stop
SJU3:30 pmSan Juan Luis Munoz Marin Intl
Feb 18
SJU2:55 pmSan Juan Luis Munoz Marin Intl
13h 02m
1 stop
SFO11:57 pmSan Francisco
$343
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 59m
1 stop
SFO11:59 pmSan Francisco
$344
JetBlue
Apr 21
SFO12:20 pmSan Francisco
10h 47m
1 stop
SJU2:07 amSan Juan Luis Munoz Marin Intl
Apr 28
SJU7:40 amSan Juan Luis Munoz Marin Intl
30h 29m
1 stop
SFO11:09 amSan Francisco
$355

Delta flights from San Francisco to San Juan

Our best Delta deals on San Francisco to San Juan flight tickets
Delta
Apr 18
SFO5:45 pmSan Francisco
15h 01m
2 stops
SJU11:46 amSan Juan Luis Munoz Marin Intl
Apr 21
SJU1:15 pmSan Juan Luis Munoz Marin Intl
14h 58m
1 stop
SFO1:13 amSan Francisco
$360
Delta
Feb 6
SFO10:54 pmSan Francisco
11h 16m
1 stop
SJU2:10 pmSan Juan Luis Munoz Marin Intl
Feb 11
SJU4:30 pmSan Juan Luis Munoz Marin Intl
11h 17m
1 stop
SFO11:47 pmSan Francisco
$421
Delta
Jan 25
SFO12:40 amSan Francisco
12h 10m
2 stops
SJU4:50 pmSan Juan Luis Munoz Marin Intl
Jan 31
SJU1:07 pmSan Juan Luis Munoz Marin Intl
11h 18m
1 stop
SFO8:25 pmSan Francisco
$453

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 January 23, 2026.
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 4/7

6:00 am-11:54 pm

2 stops14h 54m

San Juan Luis Munoz Marin Intl

Wed 4/8

6:00 am-7:14 pm

1 stop16h 14m

$342

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 2/7

11:59 pm-3:30 pm

1 stop11h 31m

San Juan Luis Munoz Marin Intl

Wed 2/18

2:55 pm-11:57 pm

1 stop13h 02m

$343

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 5/4

8:00 am-10:05 pm

1 stop11h 05m

San Juan Luis Munoz Marin Intl

Thu 5/7

6:30 pm-11:09 am

1 stop19h 39m

$344

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 2/23

10:58 pm-3:06 pm

1 stop12h 08m

San Juan Luis Munoz Marin Intl

Fri 2/27

10:55 am-7:34 pm

1 stop12h 39m

$349

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 3/10

10:40 pm-4:32 pm

1 stop14h 52m

San Juan Luis Munoz Marin Intl

Tue 3/17

6:30 am-9:38 pm

2 stops42h 08m

$350

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 2/28

11:16 pm-3:40 pm

1 stop12h 24m

San Juan Luis Munoz Marin Intl

Mon 3/2

8:49 pm-9:29 am

1 stop16h 40m

$351

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Thu 4/9

10:03 pm-11:20 am

1 stop10h 17m

San Juan Luis Munoz Marin Intl

Mon 4/13

11:59 pm-10:05 am

1 stop13h 06m

$352

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 4/21

12:20 pm-2:07 am

1 stop10h 47m

San Juan Luis Munoz Marin Intl

Tue 4/28

7:40 am-11:09 am

1 stop30h 29m

$355

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 3/23

10:38 pm-2:17 pm

1 stop12h 39m

San Juan Luis Munoz Marin Intl

Wed 4/1

6:00 am-7:14 pm

1 stop16h 14m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 3/23

10:38 pm-2:12 pm

1 stop12h 34m

San Juan Luis Munoz Marin Intl

Tue 3/31

5:35 pm-12:58 am

1 stop10h 23m

$358

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.

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 $487 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 $442 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

8h 58m

Direct flights

None
The fastest flight from San Francisco to San Juan takes 8h 58m
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 8h 58m.

  • 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 $152Free CancellationRating
5.7
3,057 reviews
Search Frontier flights
DeltaPriceFrom $172Free CancellationRating
7.9
8,096 reviews
Search Delta flights
Sun Country AirPriceFrom $250Free CancellationRating
6.9
343 reviews
Search Sun Country Air flights
JetBluePriceFrom $284Free CancellationRating
7.2
2,894 reviews
Search JetBlue flights
American AirlinesPriceFrom $350Free CancellationRating
7.2
11,182 reviews
Search American Airlines flights
United AirlinesPriceFrom $360Free CancellationRating
7.4
9,194 reviews
Search United Airlines flights
SouthwestPriceFrom $398Free CancellationRating
8.0
4,267 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