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Cheap flights from San Francisco to San Juan from $180

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 4/27. 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
8:44 pm - 5:12 pm
SFO
-
SJU
17h 28m
1 stop
Frontier Logo
6:09 pm - 10:41 am
SJU
-
SFO
19h 32m
1 stop
$376Frontier
Wed, May 27 - Fri, Jun 5
Multiple Airlines Logo
10:38 pm - 2:08 pm
SFO
-
SJU
12h 30m
1 stop
Multiple Airlines Logo
3:25 pm - 11:56 pm
SJU
-
SFO
11h 31m
1 stop
$378Multiple Airlines
Sat, Apr 25 - Thu, Apr 30
Multiple Airlines Logo
6:29 pm - 2:08 pm
SFO
-
SJU
16h 39m
2 stops
Multiple Airlines Logo
9:54 am - 7:34 pm
SJU
-
SFO
12h 40m
1 stop
$385Multiple Airlines
Sat, Apr 25 - Fri, May 8
Frontier Logo
10:38 pm - 2:17 pm
SFO
-
SJU
12h 39m
1 stop
Frontier Logo
6:00 am - 7:19 pm
SJU
-
SFO
16h 19m
1 stop
$386Frontier
Sat, Mar 28 - Sun, Apr 5
Multiple Airlines Logo
6:29 pm - 2:08 pm
SFO
-
SJU
16h 39m
2 stops
Multiple Airlines Logo
9:54 am - 5:34 pm
SJU
-
SFO
34h 40m
1 stop
$390Multiple Airlines
Sat, Apr 25 - Thu, Apr 30
Multiple Airlines Logo
10:38 pm - 2:08 pm
SFO
-
SJU
12h 30m
1 stop
Multiple Airlines Logo
4:10 pm - 11:56 pm
SJU
-
SFO
10h 46m
1 stop
$396Multiple Airlines
Sat, Apr 25 - Tue, Apr 28
Frontier Logo
10:15 pm - 2:07 pm
SFO
-
SJU
12h 52m
1 stop
Frontier Logo
6:09 pm - 10:41 am
SJU
-
SFO
19h 32m
1 stop
$397Frontier
Tue, May 19 - Mon, May 25
Multiple Airlines Logo
9:00 pm - 9:42 pm
SFO
-
SJU
21h 42m
1 stop
Multiple Airlines Logo
6:09 pm - 10:41 am
SJU
-
SFO
19h 32m
1 stop
$400Multiple Airlines
Sat, May 23 - Fri, May 29
Multiple Airlines Logo
8:44 pm - 5:12 pm
SFO
-
SJU
17h 28m
1 stop
Multiple Airlines Logo
4:25 pm - 12:33 am
SJU
-
SFO
11h 08m
1 stop
$401Multiple Airlines
Wed, May 27 - Fri, May 29
Multiple Airlines Logo
10:38 pm - 2:37 pm
SFO
-
SJU
12h 59m
1 stop
Multiple Airlines Logo
11:25 pm - 10:29 am
SJU
-
SFO
14h 04m
1 stop
$406Multiple Airlines
Fri, May 1 - Mon, May 4

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 21
SFO11:59 pmSan Francisco
20h 03m
1 stop
SJU11:02 pmSan Juan Luis Munoz Marin Intl
Apr 23
SJU6:00 amSan Juan Luis Munoz Marin Intl
18h 19m
1 stop
SFO9:19 pmSan Francisco
$445
American Airlines
Apr 7
SFO12:30 amSan Francisco
17h 21m
1 stop
SJU8:51 pmSan Juan Luis Munoz Marin Intl
May 6
SJU3:44 pmSan Juan Luis Munoz Marin Intl
10h 17m
1 stop
SFO11:01 pmSan Francisco
$455
American Airlines
Apr 1
SFO7:00 amSan Francisco
10h 34m
1 stop
SJU8:34 pmSan Juan Luis Munoz Marin Intl
Apr 30
SJU3:34 pmSan Juan Luis Munoz Marin Intl
11h 20m
1 stop
SFO11:54 pmSan Francisco
$525

Frontier flights from San Francisco to San Juan

Our best Frontier deals on San Francisco to San Juan flight tickets
Frontier
May 27
SFO8:44 pmSan Francisco
17h 28m
1 stop
SJU5:12 pmSan Juan Luis Munoz Marin Intl
Jun 5
SJU6:09 pmSan Juan Luis Munoz Marin Intl
19h 32m
1 stop
SFO10:41 amSan Francisco
$376
Frontier
Mar 28
SFO10:38 pmSan Francisco
12h 39m
1 stop
SJU2:17 pmSan Juan Luis Munoz Marin Intl
Apr 5
SJU6:00 amSan Juan Luis Munoz Marin Intl
16h 19m
1 stop
SFO7:19 pmSan Francisco
$386
Frontier
May 19
SFO10:15 pmSan Francisco
12h 52m
1 stop
SJU2:07 pmSan Juan Luis Munoz Marin Intl
May 25
SJU6:09 pmSan Juan Luis Munoz Marin Intl
19h 32m
1 stop
SFO10:41 amSan Francisco
$397

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 March 20, 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

Wed 5/27

8:44 pm-5:12 pm

1 stop17h 28m

San Juan Luis Munoz Marin Intl

Fri 6/5

6:09 pm-10:41 am

1 stop19h 32m

$376

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 4/25

10:38 pm-2:08 pm

1 stop12h 30m

San Juan Luis Munoz Marin Intl

Thu 4/30

3:25 pm-11:56 pm

1 stop11h 31m

$378

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 4/25

6:29 pm-2:08 pm

2 stops16h 39m

San Juan Luis Munoz Marin Intl

Fri 5/8

9:54 am-7:34 pm

1 stop12h 40m

$385

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 3/28

10:38 pm-2:17 pm

1 stop12h 39m

San Juan Luis Munoz Marin Intl

Sun 4/5

6:00 am-7:19 pm

1 stop16h 19m

$386

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 4/25

6:29 pm-2:08 pm

2 stops16h 39m

San Juan Luis Munoz Marin Intl

Thu 4/30

9:54 am-5:34 pm

1 stop34h 40m

$390
Quickest round-trip

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 4/25

10:38 pm-2:08 pm

1 stop12h 30m

San Juan Luis Munoz Marin Intl

Tue 4/28

4:10 pm-11:56 pm

1 stop10h 46m

$396

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 5/19

10:15 pm-2:07 pm

1 stop12h 52m

San Juan Luis Munoz Marin Intl

Mon 5/25

6:09 pm-10:41 am

1 stop19h 32m

$397

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 5/23

9:00 pm-9:42 pm

1 stop21h 42m

San Juan Luis Munoz Marin Intl

Fri 5/29

6:09 pm-10:41 am

1 stop19h 32m

$400

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 5/27

8:44 pm-5:12 pm

1 stop17h 28m

San Juan Luis Munoz Marin Intl

Fri 5/29

4:25 pm-12:33 am

1 stop11h 08m

$401

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 5/1

10:38 pm-2:37 pm

1 stop12h 59m

San Juan Luis Munoz Marin Intl

Mon 5/4

11:25 pm-10:29 am

1 stop14h 04m

$406

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 $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

10h 11m

Direct flights

None
The fastest flight from San Francisco to San Juan takes 10h 11m
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 11m.

  • 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
3,024 reviews
Search Frontier flights
DeltaPriceFrom $172Free CancellationRating
7.9
8,314 reviews
Search Delta flights
Sun Country AirPriceFrom $222Free CancellationRating
6.8
342 reviews
Search Sun Country Air flights
JetBluePriceFrom $272Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $329Free CancellationRating
7.9
12,090 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $359Free CancellationRating
7.4
9,452 reviews
Search United Airlines flights
American AirlinesPriceFrom $359Free CancellationRating
7.1
11,487 reviews
Search American Airlines flights
SouthwestPriceFrom $398Free CancellationRating
8.0
4,325 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