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Cheap flights from San Francisco to San Juan from $181

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 4/25. 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.
Multiple Airlines Logo
10:38 pm - 12:58 am
SFO
-
SJU
23h 20m
2 stops
Multiple Airlines Logo
2:37 pm - 11:04 pm
SJU
-
SFO
11h 27m
1 stop
$370Multiple Airlines
Sat, Apr 25 - Fri, May 29
Frontier Logo
8:44 pm - 2:08 am
SFO
-
SJU
26h 24m
1 stop
Frontier Logo
3:03 am - 10:41 am
SJU
-
SFO
10h 38m
1 stop
$371Frontier
Sun, May 31 - Sat, Jun 6
Frontier Logo
10:15 pm - 2:15 pm
SFO
-
SJU
13h 00m
1 stop
Frontier Logo
6:16 pm - 10:29 am
SJU
-
SFO
19h 13m
1 stop
$372Frontier
Mon, Jun 22 - Sun, Jun 28
Multiple Airlines Logo
10:38 pm - 7:14 pm
SFO
-
SJU
17h 36m
1 stop
Multiple Airlines Logo
6:30 am - 11:25 pm
SJU
-
SFO
19h 55m
2 stops
$373Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
6:00 am - 12:58 am
SFO
-
SJU
39h 58m
2 stops
Multiple Airlines Logo
2:37 pm - 11:04 pm
SJU
-
SFO
11h 27m
1 stop
$376Multiple Airlines
Sun, Apr 26 - Thu, Jun 4
Multiple Airlines Logo
10:38 pm - 2:07 pm
SFO
-
SJU
12h 29m
1 stop
Multiple Airlines Logo
5:01 am - 11:59 pm
SJU
-
SFO
21h 58m
1 stop
$378Multiple Airlines
Mon, May 4 - Mon, May 11
Multiple Airlines Logo
10:38 pm - 2:33 pm
SFO
-
SJU
12h 55m
1 stop
Multiple Airlines Logo
7:40 am - 11:56 pm
SJU
-
SFO
19h 16m
1 stop
$379Multiple Airlines
Fri, Apr 24 - Wed, Apr 29
Multiple Airlines Logo
11:16 pm - 11:10 pm
SFO
-
SJU
20h 54m
1 stop
Multiple Airlines Logo
6:30 am - 11:42 am
SJU
-
SFO
32h 12m
2 stops
$380Multiple Airlines
Sun, Apr 26 - Tue, May 5
Multiple Airlines Logo
11:16 pm - 11:10 pm
SFO
-
SJU
20h 54m
1 stop
Multiple Airlines Logo
5:47 pm - 7:34 pm
SJU
-
SFO
28h 47m
2 stops
$383Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
10:38 pm - 7:14 pm
SFO
-
SJU
17h 36m
1 stop
Multiple Airlines Logo
6:30 am - 11:25 pm
SJU
-
SFO
19h 55m
2 stops
$384Multiple Airlines
Sat, Apr 25 - Wed, Apr 29

Frontier flights from San Francisco to San Juan

Our best Frontier deals on San Francisco to San Juan flight tickets
Frontier
May 31
SFO8:44 pmSan Francisco
26h 24m
1 stop
SJU2:08 amSan Juan Luis Munoz Marin Intl
Jun 6
SJU3:03 amSan Juan Luis Munoz Marin Intl
10h 38m
1 stop
SFO10:41 amSan Francisco
$371
Frontier
Jun 22
SFO10:15 pmSan Francisco
13h 00m
1 stop
SJU2:15 pmSan Juan Luis Munoz Marin Intl
Jun 28
SJU6:16 pmSan Juan Luis Munoz Marin Intl
19h 13m
1 stop
SFO10:29 amSan Francisco
$372
Frontier
Apr 2
SFO10:03 pmSan Francisco
10h 17m
1 stop
SJU11:20 amSan Juan Luis Munoz Marin Intl
Apr 7
SJU6:00 amSan Juan Luis Munoz Marin Intl
16h 19m
1 stop
SFO7:19 pmSan Francisco
$381

Southwest flights from San Francisco to San Juan

Our best Southwest deals on San Francisco to San Juan flight tickets
Southwest
Apr 28
SFO7:15 pmSan Francisco
12h 20m
2 stops
SJU10:35 amSan Juan Luis Munoz Marin Intl
May 5
SJU5:05 amSan Juan Luis Munoz Marin Intl
17h 50m
2 stops
SFO7:55 pmSan Francisco
$426
Southwest
Apr 14
SFO7:15 pmSan Francisco
12h 20m
2 stops
SJU10:35 amSan Juan Luis Munoz Marin Intl
Apr 22
SJU5:05 amSan Juan Luis Munoz Marin Intl
17h 50m
2 stops
SFO7:55 pmSan Francisco
$495

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 April 2, 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

Cheapest round-trip

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 4/25

10:38 pm-12:58 am

2 stops23h 20m

San Juan Luis Munoz Marin Intl

Fri 5/29

2:37 pm-11:04 pm

1 stop11h 27m

$370

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 5/31

8:44 pm-2:08 am

1 stop26h 24m

San Juan Luis Munoz Marin Intl

Sat 6/6

3:03 am-10:41 am

1 stop10h 38m

$371

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 6/22

10:15 pm-2:15 pm

1 stop13h 00m

San Juan Luis Munoz Marin Intl

Sun 6/28

6:16 pm-10:29 am

1 stop19h 13m

$372

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 4/22

10:38 pm-7:14 pm

1 stop17h 36m

San Juan Luis Munoz Marin Intl

Wed 4/29

6:30 am-11:25 pm

2 stops19h 55m

$373

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 4/26

6:00 am-12:58 am

2 stops39h 58m

San Juan Luis Munoz Marin Intl

Thu 6/4

2:37 pm-11:04 pm

1 stop11h 27m

$376

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 5/4

10:38 pm-2:07 pm

1 stop12h 29m

San Juan Luis Munoz Marin Intl

Mon 5/11

5:01 am-11:59 pm

1 stop21h 58m

$378
Quickest round-trip

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 4/24

10:38 pm-2:33 pm

1 stop12h 55m

San Juan Luis Munoz Marin Intl

Wed 4/29

7:40 am-11:56 pm

1 stop19h 16m

$379

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 4/26

11:16 pm-11:10 pm

1 stop20h 54m

San Juan Luis Munoz Marin Intl

Tue 5/5

6:30 am-11:42 am

2 stops32h 12m

$380

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 4/27

11:16 pm-11:10 pm

1 stop20h 54m

San Juan Luis Munoz Marin Intl

Mon 5/4

5:47 pm-7:34 pm

2 stops28h 47m

$383

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 4/25

10:38 pm-7:14 pm

1 stop17h 36m

San Juan Luis Munoz Marin Intl

Wed 4/29

6:30 am-11:25 pm

2 stops19h 55m

$384

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 $441.

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 $430 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 57m

Direct flights

None
The fastest flight from San Francisco to San Juan takes 9h 57m
There are no direct flights from San Francisco to San Juan. There are no popular flight routes from San Francisco to San Juan.
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Frequently asked questions about flying from San Francisco to San Juan

  • How far is San Francisco to San Juan by plane?

    San Francisco and San Juan are 3618.4 mi apart from one another. In terms of flight time, this usually takes a little over 9h 57m.

  • 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 $141Free CancellationRating
5.7
3,004 reviews
Search Frontier flights
DeltaPriceFrom $172Free CancellationRating
7.9
8,373 reviews
Search Delta flights
Sun Country AirPriceFrom $222Free CancellationRating
6.8
338 reviews
Search Sun Country Air flights
JetBluePriceFrom $273Free CancellationRating
7.2
2,910 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $329Free CancellationRating
7.9
12,152 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $358Free CancellationRating
7.4
9,534 reviews
Search United Airlines flights
American AirlinesPriceFrom $359Free CancellationRating
7.1
11,552 reviews
Search American Airlines flights
SouthwestPriceFrom $412Free CancellationRating
8.0
4,337 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