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$421+ Cheap flights from Santa Rosa (STS) to San Juan

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Santa Rosa to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$421
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$578
From Santa Rosa Sonoma County to San Juan
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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Find flight deals from Santa Rosa to San Juan

Cheapest flights from Santa Rosa to San Juan
Explore the most affordable flight options available from Santa Rosa to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/64:16 pmSTS - SJU
2 stops28h 39mAmerican Airlines
Tue 7/153:23 pmSJU - STS
2 stops24h 08mAmerican Airlines
Deal found 6/10$421
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/16:00 amSTS - SJU
2 stops20h 06mAlaska Airlines
Mon 8/43:23 pmSJU - STS
2 stops35h 27mAlaska Airlines
Deal found 6/10$734

Cheapflights Fare Finder

Customize your flight search to find flights from Santa Rosa 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Santa Rosa to San Juan that are best for you.

Fly from

Santa Rosa

Fly to

San Juan

Route

Depart

Return

Price

Santa RosaSan Juan

STS - SJU

STSSJU

Santa Rosa Sonoma County

Sun 7/6

4:16 pm-11:55 pm

2 stops28h 39m

San Juan Luis Munoz Marin Intl

Tue 7/15

3:23 pm-12:31 pm

2 stops24h 08m

$421

Santa RosaSan Juan

STS - SJU

STSSJU

Santa Rosa Sonoma County

Fri 8/1

6:00 am-5:06 am

2 stops20h 06m

San Juan Luis Munoz Marin Intl

Mon 8/4

3:23 pm-11:50 pm

2 stops35h 27m

$734

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Santa Rosa to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Santa Rosa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Santa Rosa to San Juan

What is the cheapest month to book a flight from Santa Rosa to San Juan?

Currently, September is the cheapest month in which you can book a flight from Santa Rosa to San Juan (average of $254). Flying from Santa Rosa to San Juan in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Santa Rosa to San Juan?

    Located just 7.2 mi from the city center, Santa Rosa Sonoma County is the airport most travelers will use when flying to San Juan from Santa Rosa. Booking flights from Sonoma County (STS) to San Juan should be relatively easy as there are 0 daily outbound flights to San Juan from 1 airline.

  • What are the cheapest airlines flying from Santa Rosa to San Juan round-trip?

    Our cheapest airline available from Santa Rosa to San Juan is American Airlines. Our recent data shows that you can find tickets from as low as $421 on this airline. An additional option worth looking into is Alaska Airlines, starting at $734.

  • Can I find deals for flights from Santa Rosa to San Juan that include hotel bookings?

    Yes. In addition to deals on Santa Rosa to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santa Rosa to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to San Juan.

  • Can I find deals for business class flights from Santa Rosa to San Juan?

    Yes. Cheapflights offers flight deals from Santa Rosa to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Santa Rosa to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Santa Rosa to San Juan (average of $254). Flying from Santa Rosa to San Juan in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Santa Rosa to San Juan

Discover the top airline that operate flights from Santa Rosa to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$394Average$874FlexibilityNo cancel feeOn-time71%

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