HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$620+ Cheap flights from Santa Rosa (STS) to Portugal

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
STS — LIS
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Santa Rosa to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Santa Rosa to Portugal

Keep the following information in mind while searching for Santa Rosa to Portugal flight deals. Data was last updated September 16, 2025.

Round-trip from

$620
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$811
From Santa Rosa Sonoma County to Portugal
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Santa Rosa to Portugal

Cheapest flights from Santa Rosa to Portugal
Explore the most affordable flight options available from Santa Rosa to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This American Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/307:00 amSTS - LIS
2 stops19h 05mMultiple Airlines
Thu 11/610:55 amLIS - STS
2 stops21h 02mMultiple Airlines
Deal found 9/15$720
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 12/87:00 amSTS - LIS
2 stops18h 05mAmerican Airlines
Wed 1/2111:15 amLIS - STS
2 stops57h 13mAmerican Airlines
Deal found 9/15$794
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 12/912:57 pmSTS - LIS
2 stops20h 43mAmerican Airlines
Tue 1/1311:10 amLIS - STS
2 stops33h 18mAmerican Airlines
Deal found 9/15$798
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 12/612:57 pmSTS - LIS
2 stops36h 08mAmerican Airlines
Thu 1/2210:55 amLIS - STS
2 stops43h 40mAmerican Airlines
Deal found 9/15$800
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 12/97:00 amSTS - LIS
2 stops26h 40mAmerican Airlines
Wed 1/147:05 amLIS - STS
2 stops23h 30mAmerican Airlines
Deal found 9/15$806
This American Airlines deal was found by Cheapflights users on 9/15. 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 12/712:57 pmSTS - LIS
2 stops20h 48mAmerican Airlines
Fri 1/167:05 amLIS - STS
2 stops37h 23mAmerican Airlines
Deal found 9/15$812
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 12/612:57 pmSTS - LIS
2 stops36h 08mAmerican Airlines
Mon 1/1910:35 amLIS - STS
2 stops44h 00mAmerican Airlines
Deal found 9/15$821
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 12/612:57 pmSTS - LIS
2 stops36h 08mAmerican Airlines
Fri 1/167:05 amLIS - STS
2 stops37h 23mAmerican Airlines
Deal found 9/15$828
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/147:00 amSTS - LIS
2 stops26h 45mAmerican Airlines
Wed 12/2411:15 amLIS - STS
2 stops45h 03mAmerican Airlines
Deal found 9/14$843
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 12/117:00 amSTS - LIS
2 stops18h 05mAmerican Airlines
Wed 1/1411:15 amLIS - STS
2 stops57h 13mAmerican Airlines
Deal found 9/15$844
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 12/117:00 amSTS - LIS
2 stops27h 00mAmerican Airlines
Tue 1/1311:10 amLIS - STS
2 stops33h 18mAmerican Airlines
Deal found 9/16$848
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Wed 12/312:57 pmSTS - LIS
2 stops41h 48mAmerican Airlines
Sun 12/711:05 amLIS - STS
2 stops33h 22mAmerican Airlines
Deal found 9/13$850

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Portugal 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 September 16, 2025.
Use the filters below to find and compare flights from Santa Rosa to Portugal that are best for you.

Fly from

Santa Rosa

Fly to

Portugal

Route

Depart

Return

Price

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Sun 1/11

8:00 am-8:55 am

2 stops16h 55m

Lisbon Humberto Delgado

Wed 1/28

11:05 am-11:07 am

2 stops32h 02m

$620

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Sat 12/6

12:57 pm-9:05 am

2 stops36h 08m

Lisbon Humberto Delgado

Wed 1/21

11:15 am-10:35 pm

2 stops43h 20m

$800

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Sun 3/15

12:47 pm-9:45 pm

2 stops25h 58m

Lisbon Humberto Delgado

Tue 3/24

7:05 am-11:41 pm

2 stops23h 36m

$806

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 3/10

8:00 am-2:50 pm

2 stops47h 50m

Lisbon Humberto Delgado

Mon 3/30

7:15 am-12:19 pm

2 stops61h 04m

$812

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Sun 3/15

12:47 pm-5:45 pm

2 stops21h 58m

Lisbon Humberto Delgado

Mon 3/30

7:15 am-12:19 pm

2 stops61h 04m

$812

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Mon 12/15

7:00 am-2:45 pm

2 stops47h 45m

Lisbon Humberto Delgado

Thu 12/25

8:55 am-12:18 am

2 stops23h 23m

$828

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Sun 12/14

7:00 am-2:55 pm

2 stops47h 55m

Lisbon Humberto Delgado

Thu 12/25

8:55 am-12:18 am

2 stops23h 23m

$828

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 12/16

7:00 am-9:45 pm

2 stops30h 45m

Lisbon Humberto Delgado

Tue 1/13

11:10 am-12:28 pm

2 stops33h 18m

$843

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 12/16

7:00 am-9:45 pm

2 stops30h 45m

Lisbon Humberto Delgado

Wed 12/24

11:15 am-12:18 am

2 stops45h 03m

$843

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Sat 12/13

7:00 am-12:05 pm

2 stops45h 05m

Lisbon Humberto Delgado

Tue 1/13

11:10 am-12:28 pm

2 stops33h 18m

$848

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Santa Rosa to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal 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 Portugal

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

Currently, January is the cheapest month in which you can book a flight from Santa Rosa to Portugal (average of $612). Flying from Santa Rosa to Portugal in June is currently the most expensive (average of $1,127). 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.

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to Portugal. 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 Portugal?

    Santa Rosa Sonoma County (STS) is the airport you will fly out of if you book a flight from Santa Rosa to Portugal. It is only a 7.2 mi journey to Sonoma County (STS) from Santa Rosa’s city center.

  • How long is the flight from Santa Rosa to Portugal?

    A quick flight from Santa Rosa to Portugal can take about 16h 55m. American Airlines provides one of the quickest options available for as low as $620. Airlines will cover a distance of 5639 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Santa Rosa to Portugal 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 Portugal?

    Currently, January is the cheapest month in which you can book a flight from Santa Rosa to Portugal (average of $612). Flying from Santa Rosa to Portugal in June is currently the most expensive (average of $1,127). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Santa Rosa to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to Charles de Gaulle flights
San Francisco to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Los Angeles to London City flights
Los Angeles to Istanbul flights
Los Angeles to Frankfurt flights
Los Angeles to Barcelona-El Prat flights
San Francisco to Barcelona-El Prat flights
San Francisco to Istanbul flights
San Francisco to Lisbon flights
Los Angeles to Madrid flights
Los Angeles to Gatwick flights
Los Angeles to Orly flights
San Francisco to Gatwick flights
San Francisco to London City flights
San Francisco to Orly flights
San Diego to Heathrow flights
San Francisco to Madrid flights
Los Angeles to Dublin flights
San Francisco to Dublin flights
Los Angeles to Amsterdam flights
San Francisco to Frankfurt flights
San Francisco to Zurich flights
San Francisco to Amsterdam flights
Ontario to Heathrow flights
Ontario to Charles de Gaulle flights
Ontario to Leonardo da Vinci/Fiumicino flights
Los Angeles to Stansted flights
Los Angeles to Zurich flights
San Francisco to Munich flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Los Angeles to Lisbon flights
Los Angeles to Luton flights
Santa Ana to Heathrow flights
Los Angeles to Munich flights
Los Angeles to Malpensa flights
San Francisco to Malpensa flights
San Francisco to Athens flights
Los Angeles to Athens flights
San Francisco to Linate flights
Santa Ana to Charles de Gaulle flights
Burbank to Charles de Gaulle flights
Los Angeles to Sabiha Gokcen flights
Las Vegas to Heathrow flights
Los Angeles to Copenhagen flights
Los Angeles to Linate flights
Los Angeles to Frederic Chopin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.