✈️ Flight Guide: Kansas City (MCI) → Denver (DEN)

Major events that affect fares at Denver International Airport (DEN) include the Great American Beer Festival (October), National Western Stock Show (January), Denver PrideFest (June), and Coors Field big-game weekends. Nearby ski-season festivals in Vail and Aspen (December–March) also raise demand for DEN flights. To keep economy fares low, travel outside major event weekends, book well in advance if you must attend, or arrive at nearby secondary airports to avoid fare surges. CTA: Check event dates and compare DEN economy fares early to avoid premium pricing.

The best time to fly from Denver International Airport (DEN) for cheap economy fares is during shoulder seasons—January, February, and September—and mid-week days like Tuesday and Wednesday. Booking 3–7 weeks in advance for domestic leisure travel often yields the best prices, while international economy tickets may require 2–4 months lead time. For mountain and ski travel, plan well in advance for winter weeks and consider traveling outside peak holiday weekends to secure lower fares. CTA: Use flexible date search tools to find the best time to fly from DEN and save on economy tickets.

Connecting flights from Denver International Airport (DEN) often provide the cheapest economy fares by opening up more carrier and routing combinations, especially when flying to high-demand cities. Nonstop flights are faster and reduce missed-connection risk but may cost more; evaluate total trip time and out-of-pocket costs like checked baggage and overnight layovers. For budget travelers, intelligent routing through hubs like Las Vegas or Phoenix can save money, while time-sensitive travelers may benefit from nonstop service. CTA: Compare direct and connecting options from DEN to find the cheapest economy itinerary that fits your schedule.

Frontier and Southwest frequently offer the lowest base economy fares from Denver International Airport (DEN), though Southwest’s free checked bag policies can make it more economical overall when factoring fees. United and American provide larger networks and more nonstop options but with higher base fares and additional baggage fees on basic economy. Compare total trip costs — base fare plus baggage and seat fees — and use price alerts to detect temporary airline promotions. CTA: Run an airline comparison for your DEN route now to pick the best economy carrier.

Winter: Book early and allow extra connection time — snow and wind can delay flights at Denver International Airport (DEN). Spring: Take advantage of shoulder-season discounts in March and April; mid-week departures yield cheaper economy fares. Summer: Expect peak pricing in June–August; secure tickets months in advance for summer vacations. Fall: September and October often provide the best value — lower demand and mild weather make these months ideal for cheap economy travel from DEN. CTA: Use seasonal tips to adjust travel dates and book the most affordable economy fares from DEN.

Flight times from Denver International Airport (DEN) vary by destination: to Las Vegas (LAS) ~1 hour 45 minutes, Los Angeles (LAX) ~2 hours 25 minutes, Phoenix (PHX) ~2 hours 10 minutes, Chicago (ORD) ~2 hours 50 minutes, New York (JFK/LGA) ~4 hours. For cheapest economy tickets, target off-peak departures (early morning or late evening) and allow at least 60–90 minutes for domestic connections when booking separate legs. Use airline schedules and a flexible 3–4 hour window for international connections. CTA: Check live DEN schedules now to plan the most economical itinerary.

To find cheap flights from Denver International Airport (DEN) in the cheapest economy (ECO) class, use flexible-date searches and price alerts, check alternate arrival airports, and compare low-cost carriers like Frontier and Southwest. Consider non-peak travel windows such as early January and September, and fly mid-week or early morning to reduce costs. For Denver-area travelers headed to major destinations like Las Vegas, Los Angeles, Phoenix, Chicago, and New York, bundle flights with ground transfers to find better overall value. CTA: Start a price alert for cheap DEN ECO fares today to capture flash sales.