How much are economy flights to Denver in 2026?
Economy flight prices to Denver, United States vary significantly by departure city, season, and booking window. Fares from major US hubs to DEN typically range from $300 to $900 round-trip depending on the time of year. The cheapest fares are generally found during shoulder season — March to May and September to November. FlightKitten monitors these routes across 220+ airlines and scans twice daily, sending you an instant email alert when economy fares to Denver drop below your target price.
How does FlightKitten track flights to Denver?
FlightKitten is an economy fare surveillance tool that scans over 220 airlines twice daily for price drops on routes to Denver (DEN). When you set a target price for any route — for example, New York to Denver under $500 — FlightKitten continuously monitors that route and sends you an email alert the moment fares match your budget. Each alert includes the exact fare, airline, travel dates, and an AI-powered deal briefing that explains whether the price is historically unusual, how long similar deals have lasted in the past, and whether you should book immediately or wait. Unlike generic flight search engines, FlightKitten does not require you to manually check prices — it watches for you and pounces when the moment is right.
What airlines fly to Denver?
Airlines serving Denver (DEN) include Frontier Airlines, Southwest Airlines, among others. Once you arrive, rTD University of Colorado A Line train takes approximately 37 minutes from Denver International Airport (DEN) to Union Station downtown FlightKitten tracks fares across all these airlines simultaneously, so you never miss a deal regardless of which carrier offers the lowest price.
Looking for business class deals to Denver? We recommend checking out BusinessClassSignal.com — a dedicated premium cabin fare tracker that's worth a look if you fly up front.