$192 Cheap Flights from Baltimore (BWI) to Santa Rosa (STS)

View $192 flight on Wed, Dec 10, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Santa Rosa, CA (STS-Sonoma County)

Cheap Flights from Baltimore to Santa Rosa (BWI-STS)

Prices were available within the past 7 days and start at $192 for one-way flights and $398 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Dec 6 - Mon, Dec 15
BWI
Baltimore
STS
Santa Rosa
$398 Roundtrip, found 3 days ago
$398
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Baltimore to Santa Rosa, returning Mon, Dec 15, priced at $398 found 3 days ago
Alaska Airlines
Sat, Dec 6 - Mon, Dec 15
BWI
Baltimore
STS
Santa Rosa
$402 Roundtrip, found 2 days ago
$402
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Baltimore to Santa Rosa, returning Mon, Dec 15, priced at $402 found 2 days ago
Alaska Airlines
Sat, Dec 6 - Mon, Dec 15
BWI
Baltimore
STS
Santa Rosa
$404 Roundtrip, found 2 days ago
$404
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Baltimore to Santa Rosa, returning Mon, Dec 15, priced at $404 found 2 days ago
Alaska Airlines
Mon, Jan 5 - Thu, Jan 8
BWI
Baltimore
STS
Santa Rosa
$408 Roundtrip, found 2 days ago
$408
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Baltimore to Santa Rosa, returning Thu, Jan 8, priced at $408 found 2 days ago
Alaska Airlines
Sat, Dec 6 - Mon, Dec 15
BWI
Baltimore
STS
Santa Rosa
$411 Roundtrip, found 2 days ago
$411
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Baltimore to Santa Rosa, returning Mon, Dec 15, priced at $411 found 2 days ago
Alaska Airlines
Tue, Feb 17 - Fri, Feb 20
BWI
Baltimore
STS
Santa Rosa
$413 Roundtrip, found 2 days ago
$413
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Feb 17 from Baltimore to Santa Rosa, returning Fri, Feb 20, priced at $413 found 2 days ago
Alaska Airlines
Sat, Dec 6 - Mon, Dec 15
BWI
Baltimore
STS
Santa Rosa
$414 Roundtrip, found 4 days ago
$414
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Baltimore to Santa Rosa, returning Mon, Dec 15, priced at $414 found 4 days ago
Hawaiian Airlines
Tue, Jan 6 - Fri, Jan 9
BWI
Baltimore
STS
Santa Rosa
$428 Roundtrip, found 2 days ago
$428
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Jan 6 from Baltimore to Santa Rosa, returning Fri, Jan 9, priced at $428 found 2 days ago
Southwest Airlines
Sat, Jun 13 - Tue, Jun 16
BWI
Baltimore
STS
Santa Rosa
$519 Roundtrip, found 3 days ago
$519
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Jun 13 from Baltimore to Santa Rosa, returning Tue, Jun 16, priced at $519 found 3 days ago
American Airlines
Sat, Jun 13 - Tue, Jun 16
BWI
Baltimore
STS
Santa Rosa
$584 Roundtrip, found 3 days ago
$584
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Jun 13 from Baltimore to Santa Rosa, returning Tue, Jun 16, priced at $584 found 3 days ago

Alternative airports near Santa Rosa

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sonoma County STS. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $704
STS
Sonoma County
CheapestClosest
Average driving time to city center10 min
Flights from $704
Flights from Baltimore (BWI) to Santa Rosa (STS)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines
Roundtrip price
$397
Distance
2455 mi

Baltimore to Santa Rosa Flights

The cheapest times to fly from Baltimore 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 Baltimore to Santa Rosa are during the month of December. You can find some of the cheapest flights from Baltimore to Santa Rosa with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Baltimore 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 Baltimore 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 Baltimore to Santa Rosa in 2025. You can also book with separate airlines for your outbound and return journeys, from $192 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 Baltimore 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 Baltimore 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.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS) cost?
Secure a cheap one-way flight from $192 or cheap return flight from $398 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS)?
Traveling in December can help you save, as it's the cheapest month for flights between BWI and STS. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS)?
To find the cheapest airline flying from BWI to STS, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS)?
Nonstop flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BWI to STS?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS)?
Select a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour are on average 22% more likely to be canceled.**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.
What airports do you fly into for Santa Rosa from Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
If you're taking a direct flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Santa Rosa, San Francisco Intl. Airport (SFO) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS) last-minute?
Holding off until just before your trip to book a ticket from BWI to STS often results in higher prices. While you may find some last-minute offers, they aren't always guaranteed. Keep your travel schedule open for the best chance of scoring a bargain.
Is it cheaper to book a BWI to STS flight and hotel package?
You'll generally save money by securing a BWI to STS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your ideal flights and accommodations, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Sonoma County Airport (STS)?
In most instances, you're able to reschedule or cancel your BWI to STS flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, go to our Customer Service portal.

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*Available to One Key members.