$148 Cheap United flights from San Diego to San Juan (SAN to SJU)

Find The Best Day To Fly from San Diego to San Juan

Amazing United SAN to SJU Flight Deals

The cheapest flights to Luis Munoz Marin Intl. found within the past 7 days were $300 round trip and $148 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Oct 28 - Thu, Nov 6
SAN
San Diego
SJU
San Juan
$300 Roundtrip, found 4 days ago
$300
Roundtrip
found 4 days ago
Select United flight, departing Tue, Oct 28 from San Diego to San Juan, returning Thu, Nov 6, priced at $300 found 4 days ago
Tue, Oct 28 - Thu, Nov 6
SAN
San Diego
SJU
San Juan
$319 Roundtrip, found 4 days ago
$319
Roundtrip
found 4 days ago
Select United flight, departing Tue, Oct 28 from San Diego to San Juan, returning Thu, Nov 6, priced at $319 found 4 days ago
Tue, Oct 28 - Thu, Nov 6
SAN
San Diego
SJU
San Juan
$330 Roundtrip, found 4 days ago
$330
Roundtrip
found 4 days ago
Select United flight, departing Tue, Oct 28 from San Diego to San Juan, returning Thu, Nov 6, priced at $330 found 4 days ago
Mon, Feb 9 - Tue, Feb 17
SAN
San Diego
SJU
San Juan
$345 Roundtrip, found 1 day ago
$345
Roundtrip
found 1 day ago
Select United flight, departing Mon, Feb 9 from San Diego to San Juan, returning Tue, Feb 17, priced at $345 found 1 day ago
Wed, Jul 22 - Fri, Jul 31
SAN
San Diego
SJU
San Juan
$364 Roundtrip, found 5 days ago
$364
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jul 22 from San Diego to San Juan, returning Fri, Jul 31, priced at $364 found 5 days ago
Mon, Feb 9 - Tue, Feb 17
SAN
San Diego
SJU
San Juan
$372 Roundtrip, found 1 day ago
$372
Roundtrip
found 1 day ago
Select United flight, departing Mon, Feb 9 from San Diego to San Juan, returning Tue, Feb 17, priced at $372 found 1 day ago

SJU From SAN Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Ola Boutique Hotel

Ola Boutique Hotel

4.5 out of 5
Save 100% on your flight
Price was $1,050, price is now $606 per person
$606
per person
Dec 5 - Dec 8
found 12 hours ago
Roundtrip flight included
San Diego (SAN) to San Juan (SJU)
Dorado Beach 5 Bedroom Villa

Dorado Beach 5 Bedroom Villa

3.5 out of 5
Save 100% on your flight
Price was $1,804, price is now $960 per person
$960
per person
Nov 14 - Nov 17
found 1 day ago
Roundtrip flight included
San Diego (SAN) to San Juan (SJU)
Aire de O:live

Aire de O:live

4 out of 5
Save 100% on your flight
Price was $1,193, price is now $797 per person
$797
per person
Dec 5 - Dec 8
found 12 hours ago
Roundtrip flight included
San Diego (SAN) to San Juan (SJU)
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Frequently asked questions

Can I catch a flight from SAN to SJU right now?
Make sure you check out our Covid-19 Travel Advisor to discover if there are any current quarantine requirements and travel advice reports in place in Luis Munoz Marin Intl. Airport (SJU) when flying from San Diego Intl. Airport (SAN).
What terminal is United Airlines at San Diego Airport?
Once you're issued with the boarding pass for your United Airlines flight from SAN to Luis Munoz Marin Intl. Airport (SJU), you should be able to see which terminals you'll be flying in and out of. Your carrier will be able to help if those details are missing from your ticket.
Are there United Airlines non-stop flights from SAN to SJU?
If you're flying with United Airlines from San Diego Intl. Airport (SAN) to SJU, you'll need to make at least one stopover. While you're waiting for your connection, take the chance to enjoy a bite to eat or stretch your legs.
How long is a United Airlines flight from SAN to SJU?
Weather and air traffic permitting, your United Airlines flight from SAN to SJU should take around 9 hours and 23 minutes. You'll have plenty of time to enjoy some refreshments, get some shut-eye and check your itinerary before touchdown.
How many direct and indirect flights does United Airlines fly from SAN to SJU?
United Airlines offers around 3 flights per day from SAN to Luis Munoz Marin Intl. Airport (SJU).
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Luis Munoz Marin Intl. Airport (SJU), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from San Diego SAN to San Juan SJU 

To find the best deals on flights to San Diego from San Juan with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from San Diego SAN to San Juan SJU with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $300 to $372, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from San Diego SAN to San Juan SJU 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from San Diego to San Juan costs from $148. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to San Juan SJU from  San Diego SAN with United 

To find a cheap United flight from San Diego SAN to San Juan SJU, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from San Diego SAN to San Juan SJU 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as October, or if you book a flight with a stopover. 

 

Find nonstop flights from San Diego SAN to San Juan SJU with United 

If you’re keen to be on San Juan soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from San Diego SAN to San Juan SJU 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to San Juan SJU from  San Diego SAN with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to San Juan

The Royal Sonesta San Juan

The Royal Sonesta San Juan

4 out of 5
5961 Isla Verde Avenue, Carolina
A full-service spa, 6 restaurants, and an outdoor pool are all featured at this smoke-free resort. Enjoy beachfront dining and relax with sun loungers and beach ...
9/10 Wonderful! (1,975 reviews)
"Stayed during the Bad Bunny residency. The workers setting up beach umbrellas were phenomenal, the Valet staff were beyond amazing, and the location was excellent."

Reviewed on Sep 18, 2025

The Royal Sonesta San Juan
San Juan Airport Hotel

San Juan Airport Hotel

3 out of 5
LMM International Airport, Terminal D Airport Hotel (SJU), Carolina
This hotel features 10 beach bars, a bar/lounge, and a restaurant. Traveling on business? Take advantage of the 24-hour business center and free WiFi in public ...
8.2/10 Very Good! (5,226 reviews)
"Need more options in beers"

Reviewed on Sep 17, 2025

San Juan Airport Hotel
Embassy Suites by Hilton San Juan Hotel & Casino

Embassy Suites by Hilton San Juan Hotel & Casino

3.5 out of 5
8000 Tartak Street, Carolina
A casino, a 24-hour gym, and a restaurant are all featured at this smoke-free resort. There's fun for all ages with a children's pool and a playground, and barbecue ...
9/10 Wonderful! (4,008 reviews)
"We enjoyed our stay"

Reviewed on Sep 19, 2025

Embassy Suites by Hilton San Juan Hotel & Casino
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.