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$839+ Cheap flights from Santa Rosa (STS) to Belfast

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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
STS — BHD
dic. 17 — dic. 241
mié. 12/17
mié. 12/24
1 adult, Economy
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Find flight deals from Santa Rosa to Belfast

Cheapest flights from Santa Rosa to Belfast
Explore the most affordable flight options available from Santa Rosa to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 17, 2025.

This American Airlines deal was found by Cheapflights users on 11/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/512:57 pmSTS - BHD
2 stops36h 13mAmerican Airlines
mar. 12/93:05 pmBHD - STS
2 stops53h 22mAmerican Airlines
Deal found 11/16$1,602

Cheap flight deals from Santa Rosa to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 17, 2025.

Round-trip from

$839
(American Airlines)

Popular in

June

Cheapest in

April

Average price

$1,032
From Santa Rosa Sonoma County to Belfast
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Belfast 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 noviembre 17, 2025.
Use the filters below to find and compare flights from Santa Rosa to Belfast that are best for you.

Fly from

Santa Rosa

Fly to

Belfast

Route

Depart

Return

Price

Santa RosaBelfast

STS - BHD

STSBHD

Santa Rosa Sonoma County

vie. 1/16

12:55 pm-7:15 pm

2 stops22h 20m

Belfast City

mar. 1/20

10:00 am-12:25 pm

2 stops34h 25m

$839

Santa RosaBelfast

STS - BHD

STSBHD

Santa Rosa Sonoma County

vie. 12/5

12:57 pm-9:10 am

2 stops36h 13m

Belfast City

mar. 12/9

6:35 am-12:27 pm

2 stops37h 52m

$1,602

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/15

Best time to book a flight from Santa Rosa to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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 Belfast

What is the cheapest month to book a flight from Santa Rosa to Belfast?

Currently, April is the cheapest month in which you can book a flight from Santa Rosa to Belfast (average of $587). Flying from Santa Rosa to Belfast in November is currently the most expensive (average of $1,032). 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 Belfast. 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 Belfast?

    For a flight from Santa Rosa to Belfast, you will be flying from Sonoma County. Santa Rosa Sonoma County (STS) is just 7.2 mi from the center of the city. Sonoma County is the only Santa Rosa airport and it handles 0 outbound flights to Belfast per day. 0 airlines have flights to Belfast from Santa Rosa Sonoma County on a regular basis.

  • How long is the flight from Santa Rosa to Belfast?

    There are many flights that can get you from Santa Rosa to Belfast in 22h 20m. Fly via American Airlines to get the fastest option. The distance from Santa Rosa to Belfast is about 4999 mi.

  • Can I find deals for flights from Santa Rosa to Belfast that include hotel bookings?

    Yes. In addition to deals on Santa Rosa to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santa Rosa to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to Belfast.

  • Can I find deals for business class flights from Santa Rosa to Belfast?

    Yes. Cheapflights offers flight deals from Santa Rosa to Belfast 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 Belfast?

    Currently, April is the cheapest month in which you can book a flight from Santa Rosa to Belfast (average of $587). Flying from Santa Rosa to Belfast in November is currently the most expensive (average of $1,032). 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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