Round Trip Denver - Seattle for $157

Delta, Southwest, Alaska Airlines, United Airlines, and Expedia are offering nonstop round trip fares between Denver and Seattle for $157. These are basic economy fares with restrictions on baggage: United offers a personal item, while Alaska, Southwest, and Delta allow a personal item and a carry-on bag.

Travel dates vary from October 2026 to March 2027, with multiple date options available. To get this deal, book your flights through Expedia or directly on the airline websites around your preferred travel dates. These prices are consistent with typical fare ranges for these routes and dates, representing a significant discount for nonstop flights.

Flyers should consider the limited baggage options associated with these fares, but overall, this is a notably low price for nonstop service on popular flights between Denver and Seattle.