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Cheap flights from San Francisco to San Juan from $173

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 4/15. 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.
Multiple Airlines Logo
10:58 pm - 3:01 pm
SFO
-
SJU
12h 03m
1 stop
Multiple Airlines Logo
5:01 am - 9:29 am
SJU
-
SFO
31h 28m
1 stop
$347Multiple Airlines
Wed, Mar 4 - Mon, Mar 9
Multiple Airlines Logo
10:40 pm - 11:13 pm
SFO
-
SJU
44h 33m
2 stops
Multiple Airlines Logo
12:05 pm - 7:14 pm
SJU
-
SFO
34h 09m
1 stop
$348Multiple Airlines
Thu, Mar 5 - Tue, Mar 17
JetBlue Logo
8:35 am - 12:59 am
SFO
-
SJU
12h 24m
1 stop
JetBlue Logo
10:59 pm - 11:28 am
SJU
-
SFO
15h 29m
1 stop
$349JetBlue
Sat, Feb 28 - Tue, Mar 10
JetBlue Logo
10:39 pm - 2:34 pm
SFO
-
SJU
11h 55m
1 stop
JetBlue Logo
10:55 am - 7:34 pm
SJU
-
SFO
12h 39m
1 stop
$350JetBlue
Mon, Mar 2 - Wed, Mar 4
JetBlue Logo
8:20 am - 11:49 pm
SFO
-
SJU
11h 29m
1 stop
JetBlue Logo
8:49 pm - 9:29 am
SJU
-
SFO
16h 40m
1 stop
$351JetBlue
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
10:40 pm - 7:50 pm
SFO
-
SJU
18h 10m
1 stop
Multiple Airlines Logo
3:08 am - 9:38 pm
SJU
-
SFO
45h 30m
2 stops
$352Multiple Airlines
Tue, Mar 17 - Tue, Mar 24
Frontier Logo
11:09 pm - 2:53 am
SFO
-
SJU
23h 44m
2 stops
Frontier Logo
6:30 am - 7:14 pm
SJU
-
SFO
39h 44m
2 stops
$353Frontier
Sun, Mar 1 - Tue, Mar 10
Frontier Logo
10:03 pm - 11:20 am
SFO
-
SJU
10h 17m
1 stop
Frontier Logo
10:53 am - 4:52 pm
SJU
-
SFO
32h 59m
2 stops
$354Frontier
Tue, Apr 7 - Tue, Apr 14
JetBlue Logo
10:39 pm - 9:28 am
SFO
-
SJU
30h 49m
1 stop
JetBlue Logo
8:49 pm - 9:29 am
SJU
-
SFO
16h 40m
1 stop
$355JetBlue
Sat, Feb 21 - Wed, Feb 25
JetBlue Logo
9:00 am - 1:29 am
SFO
-
SJU
13h 29m
1 stop
JetBlue Logo
11:59 pm - 9:23 am
SJU
-
SFO
12h 24m
1 stop
$356JetBlue
Wed, Apr 8 - Wed, Apr 15

Delta flights from San Francisco to San Juan

Our best Delta deals on San Francisco to San Juan flight tickets
Delta
May 1
SFO10:55 pmSan Francisco
14h 36m
1 stop
SJU4:31 pmSan Juan Luis Munoz Marin Intl
May 8
SJU1:10 pmSan Juan Luis Munoz Marin Intl
12h 34m
1 stop
SFO10:44 pmSan Francisco
$360
Delta
Feb 7
SFO12:40 amSan Francisco
10h 38m
1 stop
SJU3:18 pmSan Juan Luis Munoz Marin Intl
Feb 10
SJU7:30 amSan Juan Luis Munoz Marin Intl
20h 26m
2 stops
SFO11:56 pmSan Francisco
$436
Delta
Feb 6
SFO7:09 pmSan Francisco
13h 55m
2 stops
SJU1:04 pmSan Juan Luis Munoz Marin Intl
Feb 9
SJU3:55 pmSan Juan Luis Munoz Marin Intl
11h 30m
1 stop
SFO11:25 pmSan Francisco
$483

Southwest flights from San Francisco to San Juan

Our best Southwest deals on San Francisco to San Juan flight tickets
Southwest
Mar 3
SFO9:50 amSan Francisco
10h 45m
2 stops
SJU12:35 amSan Juan Luis Munoz Marin Intl
Mar 10
SJU10:10 amSan Juan Luis Munoz Marin Intl
13h 55m
2 stops
SFO9:05 pmSan Francisco
$402
Southwest
Feb 10
SFO9:50 amSan Francisco
10h 45m
2 stops
SJU12:35 amSan Juan Luis Munoz Marin Intl
Feb 13
SJU6:30 amSan Juan Luis Munoz Marin Intl
12h 30m
1 stop
SFO3:00 pmSan Francisco
$466
Southwest
Feb 6
SFO9:30 pmSan Francisco
11h 45m
1 stop
SJU1:15 pmSan Juan Luis Munoz Marin Intl
Feb 8
SJU5:40 amSan Juan Luis Munoz Marin Intl
12h 05m
2 stops
SFO1:45 pmSan Francisco
$537

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 3, 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

Wed 3/4

10:58 pm-3:01 pm

1 stop12h 03m

San Juan Luis Munoz Marin Intl

Mon 3/9

5:01 am-9:29 am

1 stop31h 28m

$347

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Thu 3/5

10:40 pm-11:13 pm

2 stops44h 33m

San Juan Luis Munoz Marin Intl

Tue 3/17

12:05 pm-7:14 pm

1 stop34h 09m

$348

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 2/28

8:35 am-12:59 am

1 stop12h 24m

San Juan Luis Munoz Marin Intl

Tue 3/10

10:59 pm-11:28 am

1 stop15h 29m

$349

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 3/2

10:39 pm-2:34 pm

1 stop11h 55m

San Juan Luis Munoz Marin Intl

Wed 3/4

10:55 am-7:34 pm

1 stop12h 39m

$350

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 2/25

8:20 am-11:49 pm

1 stop11h 29m

San Juan Luis Munoz Marin Intl

Wed 3/4

8:49 pm-9:29 am

1 stop16h 40m

$351

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 3/17

10:40 pm-7:50 pm

1 stop18h 10m

San Juan Luis Munoz Marin Intl

Tue 3/24

3:08 am-9:38 pm

2 stops45h 30m

$352

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 3/1

11:09 pm-2:53 am

2 stops23h 44m

San Juan Luis Munoz Marin Intl

Tue 3/10

6:30 am-7:14 pm

2 stops39h 44m

$353

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 4/7

10:03 pm-11:20 am

1 stop10h 17m

San Juan Luis Munoz Marin Intl

Tue 4/14

10:53 am-4:52 pm

2 stops32h 59m

$354

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 2/21

10:39 pm-9:28 am

1 stop30h 49m

San Juan Luis Munoz Marin Intl

Wed 2/25

8:49 pm-9:29 am

1 stop16h 40m

$355

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 4/8

9:00 am-1:29 am

1 stop13h 29m

San Juan Luis Munoz Marin Intl

Wed 4/15

11:59 pm-9:23 am

1 stop12h 24m

$356

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 $428 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

10h 08m

Direct flights

None
The fastest flight from San Francisco to San Juan takes 10h 08m
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 10h 08m.

  • 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 $154Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
DeltaPriceFrom $172Free CancellationRating
7.9
8,139 reviews
Search Delta flights
Sun Country AirPriceFrom $222Free CancellationRating
6.9
342 reviews
Search Sun Country Air flights
JetBluePriceFrom $274Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $329Free CancellationRating
8.0
11,835 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $357Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
United AirlinesPriceFrom $359Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
SouthwestPriceFrom $398Free CancellationRating
8.0
4,273 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