HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$626+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
STS — LIS
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
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 abril 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$843
(American Airlines)

One-way from

$626
(Finnair)

Popular in

June

Cheapest in

February

Average price

$805
Provider with most accurate pricing for San Francisco-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Lisbon Humberto Delgado flights.
Search Deals
From Santa Rosa Sonoma County to Portugal
Search Deals
One-way flight from Santa Rosa Sonoma County to Portugal
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 abril 17, 2025.

This American Airlines deal was found by Cheapflights users on 4/17. 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.
mar. 9/302:30 pmSTS - LIS
2 stops19h 25mAmerican Airlines
vie. 10/177:20 amLIS - STS
2 stops23h 15mAmerican Airlines
Deal found 4/17$843
This Iberia deal was found by Cheapflights users on 4/16. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/93:05 pmSTS - LIS
2 stops22h 25mIberia
lun. 7/1410:10 pmLIS - STS
2 stops33h 34mIberia
Deal found 4/16$1,294
This Finnair deal was found by Cheapflights users on 4/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/214:16 pmSTS - LIS
2 stops22h 54mMultiple Airlines
mar. 7/297:15 amLIS - STS
2 stops24h 29mMultiple Airlines
Deal found 4/16$1,473
This Finnair deal was found by Cheapflights users on 4/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/13:05 pmSTS - LIS
2 stops23h 55mFinnair
sáb. 7/56:35 amLIS - STS
2 stops25h 09mFinnair
Deal found 4/16$2,458

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 abril 17, 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

mar. 9/30

2:30 pm-5:55 pm

2 stops19h 25m

Lisbon Humberto Delgado

vie. 10/17

7:20 am-10:35 pm

2 stops23h 15m

$843

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

mié. 7/9

3:05 pm-9:30 pm

2 stops22h 25m

Lisbon Humberto Delgado

lun. 7/14

10:10 pm-11:44 pm

2 stops33h 34m

$1,294

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

lun. 7/21

4:16 pm-11:10 pm

2 stops22h 54m

Lisbon Humberto Delgado

mar. 7/29

7:15 am-11:44 pm

2 stops24h 29m

$1,473

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

mar. 7/1

3:05 pm-11:00 pm

2 stops23h 55m

Lisbon Humberto Delgado

sáb. 7/5

6:35 am-11:44 pm

2 stops25h 09m

$2,458

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

dom. 7/20

12:29 pm-11:25 pm

2 stops26h 56m

$626

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

jue. 9/18

3:00 pm-11:05 pm

2 stops24h 05m

$771

Santa RosaLisbon

STS - LIS

STSLIS

Santa Rosa Sonoma County

mar. 6/3

7:00 am-9:05 am

2 stops18h 05m

$953

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

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 $1,203). 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 Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 abril 17, 2025.
Finnair
7.6
Good
1,269 reviews

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Finnair
7.6
Good
1,269 reviews
Finnair
7.6
Good
1,269 reviews

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,269 reviews

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Iberia
7.0
Good
2,676 reviews
Finnair
7.6
Good
1,269 reviews

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

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.

  • 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 $1,203). 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
San Francisco to Barcelona-El Prat flights
San Francisco to Charles de Gaulle flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Los Angeles to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
Los Angeles to Barcelona-El Prat flights
Los Angeles to Madrid flights
Los Angeles to London City flights
Los Angeles to Frankfurt flights
Los Angeles to Istanbul flights
San Francisco to Gatwick flights
San Francisco to London City flights
Los Angeles to Gatwick flights
San Francisco to Istanbul flights
San Francisco to Orly flights
San Francisco to Lisbon flights
Los Angeles to Dublin flights
Los Angeles to Amsterdam flights
San Francisco to Frankfurt flights
Los Angeles to Athens flights
San Francisco to Dublin flights
San Francisco to Athens flights
Los Angeles to Lisbon flights
Los Angeles to Orly flights
San Francisco to Amsterdam flights
San Diego to Heathrow flights
Ontario to Heathrow flights
San Francisco to Malpensa flights
San Francisco to Copenhagen flights
Ontario to Charles de Gaulle flights
San Francisco to Zurich flights
Los Angeles to Luton flights
Los Angeles to Malpensa flights
San Francisco to Linate flights
San Francisco to Madrid flights
Los Angeles to Munich flights
Los Angeles to Zurich flights
Ontario to Leonardo da Vinci/Fiumicino flights
Burbank to Charles de Gaulle flights
San Francisco to Munich flights
Los Angeles to Copenhagen flights
Las Vegas to Heathrow flights
Los Angeles to Linate flights
Los Angeles to Vicenza flights
Ontario to Athens flights
Los Angeles to Frederic Chopin flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Ontario to Barcelona-El Prat 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.