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$597+ Cheap flights from Santa Rosa (STS) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/27. Fares are subject to change and may not be available on all flights or dates of travel.
STS — LIS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$835
(American Airlines)

One-way from

$597
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$953
From Santa Rosa Sonoma County to Portugal
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One-way flight from Santa Rosa Sonoma County to Portugal
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High demand for flights, 1% potential price rise
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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 July 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 July 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/30. 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 10/264:17 pmSTS - LIS
2 stops39h 38mAmerican Airlines
Tue 11/47:05 amLIS - STS
2 stops35h 05mAmerican Airlines
Deal found 7/30$835
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/306:00 amSTS - LIS
2 stops19h 05mMultiple Airlines
Fri 10/1711:05 amLIS - STS
2 stops20h 11mMultiple Airlines
Deal found 7/30$878
This Finnair deal was found by Cheapflights users on 7/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/123:05 pmSTS - LIS
2 stops23h 55mFinnair
Tue 8/197:15 amLIS - STS
2 stops24h 29mFinnair
Deal found 7/29$1,545

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 July 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

Sun 10/26

12:51 pm-2:55 pm

2 stops43h 04m

Lisbon Humberto Delgado

Wed 11/5

10:40 am-11:59 pm

2 stops45h 19m

$835

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 9/30

6:00 am-9:05 am

2 stops19h 05m

Lisbon Humberto Delgado

Fri 10/17

11:05 am-11:16 pm

2 stops20h 11m

$878

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Tue 8/12

3:05 pm-11:00 pm

2 stops23h 55m

Lisbon Humberto Delgado

Tue 8/19

7:15 am-11:44 pm

2 stops24h 29m

$1,545

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Sat 12/27

3:53 pm-12:05 pm

2 stops60h 12m

$597

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Wed 12/17

1:30 pm-8:05 pm

2 stops22h 35m

$1,098

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

Mon 8/11

3:05 pm-11:10 pm

2 stops24h 05m

$8,593

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 $1,129). 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.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated July 30, 2025.
See what other customers who have flown with Finnair, American Airlines, and Iberia from Santa Rosa to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,316 reviews

Overall

7.6

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,316 reviews
Finnair
7.6
Good
1,316 reviews

Overall

7.6

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,316 reviews

Overall

7.6

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Iberia
7.0
Good
2,859 reviews
Finnair
7.6
Good
1,316 reviews

Overall

7.6

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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.

  • What are the cheapest airlines to fly from Santa Rosa to Portugal one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $597. Iberia flights start at $1,098 while deals on Finnair start at $8,593 one-way.

  • 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 $1,129). 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.

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