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Cheap flights from San Francisco to San Juan from $175

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 3/24. 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.
Frontier Logo
9:04 pm - 1:58 am
SFO
-
SJU
25h 54m
2 stops
Frontier Logo
3:22 pm - 7:14 pm
SJU
-
SFO
30h 52m
1 stop
$351Frontier
Tue, Mar 10 - Tue, Mar 17
Frontier Logo
10:38 pm - 2:17 pm
SFO
-
SJU
12h 39m
1 stop
Frontier Logo
9:01 am - 9:08 pm
SJU
-
SFO
39h 07m
2 stops
$352Frontier
Mon, Mar 16 - Thu, Apr 9
Frontier Logo
10:40 pm - 2:17 pm
SFO
-
SJU
12h 37m
1 stop
Frontier Logo
6:00 am - 7:14 pm
SJU
-
SFO
16h 14m
1 stop
$353Frontier
Tue, Mar 10 - Mon, Apr 6
Multiple Airlines Logo
10:46 pm - 2:22 pm
SFO
-
SJU
11h 36m
1 stop
Multiple Airlines Logo
12:05 pm - 7:14 pm
SJU
-
SFO
34h 09m
1 stop
$354Multiple Airlines
Sun, Feb 22 - Wed, Mar 18
Frontier Logo
8:58 am - 3:08 pm
SFO
-
SJU
26h 10m
2 stops
Frontier Logo
3:22 pm - 7:14 pm
SJU
-
SFO
30h 52m
1 stop
$355Frontier
Sat, Feb 21 - Tue, Mar 17
Frontier Logo
10:38 pm - 2:08 pm
SFO
-
SJU
12h 30m
1 stop
Frontier Logo
3:19 pm - 9:08 am
SJU
-
SFO
20h 49m
2 stops
$356Frontier
Sun, May 3 - Thu, May 14
JetBlue Logo
8:00 am - 8:50 pm
SFO
-
SJU
9h 50m
1 stop
JetBlue Logo
5:01 am - 2:30 pm
SJU
-
SFO
12h 29m
1 stop
$357JetBlue
Thu, May 7 - Tue, May 12
Multiple Airlines Logo
10:38 pm - 7:50 pm
SFO
-
SJU
18h 12m
1 stop
Multiple Airlines Logo
6:30 am - 9:08 pm
SJU
-
SFO
41h 38m
2 stops
$358Multiple Airlines
Tue, Mar 31 - Wed, Apr 8
Multiple Airlines Logo
6:00 am - 2:01 am
SFO
-
SJU
17h 01m
2 stops
Multiple Airlines Logo
6:49 pm - 10:31 pm
SJU
-
SFO
30h 42m
1 stop
$359Multiple Airlines
Tue, Apr 14 - Thu, Apr 23
United Airlines Logo
5:00 am - 5:38 pm
SFO
-
SJU
9h 38m
1 stop
United Airlines Logo
3:56 pm - 12:19 am
SJU
-
SFO
11h 23m
1 stop
$360United Airlines
Mon, Apr 13 - Fri, Apr 17

American Airlines flights from San Francisco to San Juan

Our best American Airlines deals on San Francisco to San Juan flight tickets
American Airlines
Apr 13
SFO6:58 pmSan Francisco
11h 15m
2 stops
SJU9:13 amSan Juan Luis Munoz Marin Intl
Apr 15
SJU7:25 amSan Juan Luis Munoz Marin Intl
18h 50m
1 stop
SFO11:15 pmSan Francisco
$370
American Airlines
Feb 24
SFO12:25 amSan Francisco
11h 36m
2 stops
SJU4:01 pmSan Juan Luis Munoz Marin Intl
Mar 4
SJU10:20 amSan Juan Luis Munoz Marin Intl
16h 29m
1 stop
SFO10:49 pmSan Francisco
$393
American Airlines
Feb 21
SFO6:00 amSan Francisco
13h 31m
1 stop
SJU11:31 pmSan Juan Luis Munoz Marin Intl
Feb 25
SJU8:00 amSan Juan Luis Munoz Marin Intl
13h 14m
2 stops
SFO5:14 pmSan Francisco
$416

Frontier flights from San Francisco to San Juan

Our best Frontier deals on San Francisco to San Juan flight tickets
Frontier
Mar 10
SFO9:04 pmSan Francisco
25h 54m
2 stops
SJU1:58 amSan Juan Luis Munoz Marin Intl
Mar 17
SJU3:22 pmSan Juan Luis Munoz Marin Intl
30h 52m
1 stop
SFO7:14 pmSan Francisco
$351
Frontier
Mar 10
SFO10:40 pmSan Francisco
12h 37m
1 stop
SJU2:17 pmSan Juan Luis Munoz Marin Intl
Apr 6
SJU6:00 amSan Juan Luis Munoz Marin Intl
16h 14m
1 stop
SFO7:14 pmSan Francisco
$353
Frontier
Feb 21
SFO8:58 amSan Francisco
26h 10m
2 stops
SJU3:08 pmSan Juan Luis Munoz Marin Intl
Mar 17
SJU3:22 pmSan Juan Luis Munoz Marin Intl
30h 52m
1 stop
SFO7:14 pmSan Francisco
$355

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 February 11, 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 3/10

9:04 pm-1:58 am

2 stops25h 54m

San Juan Luis Munoz Marin Intl

Tue 3/17

3:22 pm-7:14 pm

1 stop30h 52m

$351

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 3/16

10:38 pm-2:17 pm

1 stop12h 39m

San Juan Luis Munoz Marin Intl

Thu 4/9

9:01 am-9:08 pm

2 stops39h 07m

$352

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 3/10

10:40 pm-2:17 pm

1 stop12h 37m

San Juan Luis Munoz Marin Intl

Mon 4/6

6:00 am-7:14 pm

1 stop16h 14m

$353

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 2/22

10:46 pm-2:22 pm

1 stop11h 36m

San Juan Luis Munoz Marin Intl

Wed 3/18

12:05 pm-7:14 pm

1 stop34h 09m

$354

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 2/21

8:58 am-3:08 pm

2 stops26h 10m

San Juan Luis Munoz Marin Intl

Tue 3/17

3:22 pm-7:14 pm

1 stop30h 52m

$355

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 5/3

10:38 pm-2:08 pm

1 stop12h 30m

San Juan Luis Munoz Marin Intl

Thu 5/14

3:19 pm-9:08 am

2 stops20h 49m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Thu 5/7

8:00 am-8:50 pm

1 stop9h 50m

San Juan Luis Munoz Marin Intl

Tue 5/12

5:01 am-2:30 pm

1 stop12h 29m

$357

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 3/31

10:38 pm-7:50 pm

1 stop18h 12m

San Juan Luis Munoz Marin Intl

Wed 4/8

6:30 am-9:08 pm

2 stops41h 38m

$358

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 4/14

6:00 am-2:01 am

2 stops17h 01m

San Juan Luis Munoz Marin Intl

Thu 4/23

6:49 pm-10:31 pm

1 stop30h 42m

$359

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 4/13

5:00 am-5:38 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Fri 4/17

3:56 pm-12:19 am

1 stop11h 23m

$360

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 $443.

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 $421 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 12m

Direct flights

None
The fastest flight from San Francisco to San Juan takes 9h 12m
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 12m.

  • 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 $158Free CancellationRating
5.7
3,052 reviews
Search Frontier flights
DeltaPriceFrom $172Free CancellationRating
7.9
8,175 reviews
Search Delta flights
Sun Country AirPriceFrom $222Free CancellationRating
6.8
342 reviews
Search Sun Country Air flights
JetBluePriceFrom $273Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $329Free CancellationRating
8.0
11,874 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $358Free CancellationRating
7.2
11,266 reviews
Search American Airlines flights
United AirlinesPriceFrom $359Free CancellationRating
7.4
9,274 reviews
Search United Airlines flights
SouthwestPriceFrom $398Free CancellationRating
8.0
4,280 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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Fri 3/13
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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