Cheap flights from Seattle, WA to Sidney, MT

Travelers frequently search for route combinations, such as Seattle and Denver, Las Vegas, Mexico City, Orlando, Atlanta, Austin, London, Houston, Paris, Barcelona, Rome, Los Angeles, Phoenix, Washington, D.C., Detroit, Madrid, Dublin, Minneapolis, Cleveland, Guadalajara.

Travelers frequently search for route combinations, such as Sidney and Billings, Denver, Wichita, Mexico City, Charlotte, New York, Orlando, Las Vegas, Chicago, Miami, Los Angeles, Atlanta, Dallas, Phoenix, Philadelphia, San Francisco, Houston, San Juan, Washington, D.C., Fort Lauderdale.

Seattle is mainly served by Seattle–Tacoma International. But there are other airports nearby, including Boeing Field, Kenmore Air Harbor Seaplane Base.

The main airport in Seattle is Seattle–Tacoma International. It is also served by Vancouver International, Portland International, Abbotsford International, Bellingham International, Victoria Inner Harbour SPB, Paine Field Everett, Vancouver Harbour Flight Centre, Pangborn Memorial, Yakima Air Terminal.

The main airport in Sidney is Sidney–Richland Municipal. It is also served by Minot International, L. M. Clayton, Glasgow, Dickinson Theodore Roosevelt Regional, Sidney–Richland Municipal, Dawson Community.

Yes, it's possible to combine different modes of transport between Seattle and Sidney thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Seattle and Sidney can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Currently, you can fly between Seattle and Sidney with Alaska Airlines, Cape Air.

If you don’t have specific dates for your trip between Seattle and Sidney, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.