$534 Cheap Flights from Cologne (CGN) to Santa Rosa (STS)

View $534 flight on Sat, May 9, 2026Opens in a new window

Popular airlines from Cologne - Bonn Airport (CGN) to Santa Rosa, CA (STS-Sonoma County)

Cheap Flights from Cologne to Santa Rosa (CGN-STS)

Prices were available within the past 7 days and start at $534 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS) cost?
Snag a cheap one-way flight from $534 or cheap return flight from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS)?
The cheapest month to fly from CGN to STS is , when demand is low. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS)?
To find the cheapest airline flying from CGN to STS, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS)?
There aren't any daily nonstop flights available from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from CGN to STS?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS)?
Book a flight from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS) last-minute?
Booking your ticket from CGN to STS shortly before your journey is generally more expensive. However, if there's some wiggle room with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a CGN to STS flight and hotel package?
You can save money by booking a CGN to STS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your ideal accommodations and flights, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Cologne - Bonn Airport (CGN) to Sonoma County Airport (STS)?
Typically, you're able to reschedule or cancel your CGN to STS flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need more details, head to our Customer Service portal.

Travel information

Origin airport
Cologne - Bonn
Destination airport
Sonoma County
Distance
5556 mi

Book with confidence

Cologne to Santa Rosa Flights

The cheapest times to fly from Cologne to Santa Rosa

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Cologne to Santa Rosa are during the month of . You can find some of the cheapest flights from Cologne to Santa Rosa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Cologne to Santa Rosa

Sunday is one of the best days to book for cheap flights from Cologne to Santa Rosa: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Cologne to Santa Rosa

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Cologne to Santa Rosa in 2025. You can also book with separate airlines for your outbound and return journeys, from $534 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Cologne to Santa Rosa flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Cologne to Santa Rosa airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Cologne to Santa Rosa Flights

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*Available to One Key members.