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$791+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
STS — LIS
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$791
(American Airlines)

Popular in

June

Cheapest in

February

Average price

$746
Provider with most accurate pricing for San Francisco-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Lisbon Humberto Delgado flights.
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From Santa Rosa Sonoma County to Portugal
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Highest demand for flights based on searches. 15% potential increase in price ($149 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/28. 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 12/293:53 pmSTS - LIS
2 stops22h 02mMultiple Airlines
Thu 1/88:55 amLIS - STS
2 stops22h 03mMultiple Airlines
Deal found 10/28$811
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Fri 12/127:00 amSTS - LIS
2 stops17h 50mMultiple Airlines
Fri 12/1911:05 amLIS - STS
2 stops20h 35mMultiple Airlines
Deal found 10/28$813
This American Airlines deal was found by Cheapflights users on 10/27. 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 12/37:00 amSTS - LIS
2 stops30h 50mAmerican Airlines
Sun 12/77:05 amLIS - STS
2 stops24h 47mAmerican Airlines
Deal found 10/27$841
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/2712:37 pmSTS - LIS
2 stops21h 23mAmerican Airlines
Sun 11/3011:05 amLIS - STS
2 stops60h 48mAmerican Airlines
Deal found 10/28$1,499
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/2612:37 pmSTS - LIS
2 stops42h 08mAmerican Airlines
Sun 11/3011:05 amLIS - STS
2 stops57h 43mAmerican Airlines
Deal found 10/28$1,539
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/257:40 amSTS - LIS
2 stops30h 05mAmerican Airlines
Sun 11/3011:05 amLIS - STS
2 stops57h 43mAmerican Airlines
Deal found 10/28$1,586

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 October 30, 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

Mon 3/23

12:47 pm-6:55 pm

2 stops23h 08m

Lisbon Humberto Delgado

Thu 4/2

7:20 am-11:41 pm

2 stops24h 21m

$791

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Mon 3/23

4:12 pm-6:55 pm

2 stops19h 43m

Lisbon Humberto Delgado

Tue 3/31

7:15 am-11:41 pm

2 stops24h 26m

$791

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Mon 3/23

1:22 pm-6:55 pm

2 stops22h 33m

Lisbon Humberto Delgado

Wed 4/1

11:00 am-9:47 am

2 stops30h 47m

$791

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 3/24

4:12 pm-9:45 pm

2 stops22h 33m

Lisbon Humberto Delgado

Tue 3/31

7:15 am-11:41 pm

2 stops24h 26m

$791

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 3/24

1:22 pm-5:40 pm

2 stops21h 18m

Lisbon Humberto Delgado

Thu 4/2

7:20 am-11:41 pm

2 stops24h 21m

$791

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Mon 12/29

3:53 pm-9:55 pm

2 stops22h 02m

Lisbon Humberto Delgado

Thu 1/8

8:55 am-10:58 pm

2 stops22h 03m

$811

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Mon 3/23

1:22 pm-2:45 pm

2 stops42h 23m

Lisbon Humberto Delgado

Fri 4/3

7:20 am-9:47 am

2 stops34h 27m

$836

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 3/24

1:22 pm-9:45 pm

2 stops25h 23m

Lisbon Humberto Delgado

Fri 4/3

7:20 am-9:47 am

2 stops34h 27m

$836

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Wed 12/3

7:00 am-9:50 pm

2 stops30h 50m

Lisbon Humberto Delgado

Sun 12/7

7:05 am-11:52 pm

2 stops24h 47m

$841

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Mon 3/23

7:00 am-6:55 pm

2 stops28h 55m

Lisbon Humberto Delgado

Mon 3/30

7:15 am-9:47 am

2 stops34h 32m

$841

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 11 results
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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, November is the cheapest month in which you can book a flight from Santa Rosa to Portugal (average of $507). Flying from Santa Rosa to Portugal in June is currently the most expensive (average of $782). 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 23h 08m. American Airlines provides one of the quickest options available for as low as $791. 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, November is the cheapest month in which you can book a flight from Santa Rosa to Portugal (average of $507). Flying from Santa Rosa to Portugal in June is currently the most expensive (average of $782). 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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