Best Flights starting from $300
Economy
Washington, D.C. (IAD)
Fri, Jul 10
Roundtrip
Denver (DEN)
Mon, Jul 13
Economy
Washington, D.C. (IAD)
Thu, Jul 9
Roundtrip
Denver (DEN)
Mon, Jul 13
Other Options for This Route
Other Destinations
Washington, D.C. (IAD) to Calgary (YYC) in July from $234
From $234
Washington, D.C. (IAD) to Salt Lake City (SLC) in July from $307
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Washington, D.C. (IAD) to Oranjestad (AUA) in July from $359
From $359
Washington, D.C. (IAD) to Las Vegas (Any) in July from $394
From $394
Washington, D.C. (IAD) to Lima (LIM) in July from $524
From $524
Washington, D.C. (IAD) to Madrid (MAD) in July from $673
From $673
Flights from Other Cities
Appleton (ATW) to Denver (DEN) in July from $141
From $141
Memphis (MEM) to Denver (DEN) in July from $170
From $170
Atlanta (ATL) to Denver (DEN) in July from $205
From $205
Ontario (ONT) to Denver (DEN) in July from $211
From $211
Philadelphia (Any) to Denver (DEN) in July from $259
From $259
Newark (EWR) to Denver (DEN) in July from $269
From $269
✈️ Flight Guide: Washington, D.C. (IAD) → Denver (DEN)
Complete travel information for your July journey
Departing from Washington, D.C. (IAD) FAQs
To find the cheapest economy fares from Denver International Airport (DEN), monitor fare aggregators like Google Flights, Skyscanner and Kayak and set price alerts. Low-cost carriers such as Frontier and Southwest frequently post discount routes from DEN to popular budget destinations like Las Vegas and Phoenix; booking 3–8 weeks in advance often yields the best economy deals. Consider flexible dates and midweek departures to lower the fare further.
Cheapest economy fares (basic economy or deeply discounted economy) from Denver International Airport (DEN) commonly exclude checked bags and sometimes carry-on priority; Frontier, Southwest, United, American and Delta each have different included allowances. Always check the fare rules at booking and add baggage during purchase to save versus airport counter fees. Review airline baggage fees and dimensions to avoid surprises and incidental costs.
Yes—December often features holiday-season deals on flights from Denver International Airport (DEN) to warm-weather hubs like Phoenix and Orlando and to ski gateways like Salt Lake City and Aspen. Airlines sometimes release limited-time discounted economy seats in late fall; book early for holiday periods, or search last-minute savings if you have flexible dates. Use multi-airline price comparisons and monitor fare sales through airline newsletters in November and December.
Denver International Airport (DEN) is the primary gateway for the Denver metro area and commonly serves travelers visiting Boulder, Colorado Springs, Fort Collins, Vail and Aspen. Ground transportation (rental cars, shuttles and buses) makes these cities accessible within 1–3 hours, and DEN is a hub for connecting flights across the western U.S. and nationwide. If you're planning onward ground travel, check shuttle timetables and rental car availability before booking.
For peak summer travel from Denver International Airport (DEN), aim to book economy flights 6–10 weeks in advance for the best balance of price and availability. Popular routes to coastal cities (Los Angeles, San Diego) and national parks fill early; booking earlier can secure lower fares during high-demand weekends. Use fare calendars and set alerts to capture dips in price.
January sometimes yields last-minute economy bargains from Denver International Airport (DEN), especially for midweek travel or to warm-weather destinations after the holidays. However, weekend and ski-season routes may be pricier. For last-minute savings, search flexible-date tools, consider overnight or redeye flights and look at budget carriers with open inventory.
Arriving at Denver (DEN) FAQs
'Economy Class — Cheapest Destinations (ECONOMY)' is a conceptual arrival category intended to describe the most affordable economy-seat destinations from Denver. It groups budget-focused arrival options such as Las Vegas, Phoenix, Los Angeles, Chicago and Dallas that often appear as the lowest-fare endpoints when searching for cheap economy tickets. Use this as a search lens to find the cheapest arrival options from Denver International Airport (DEN).
Popular low-fare arrival cities from Denver International Airport (DEN) include Las Vegas (McCarran International Airport / Harry Reid — LAS), Phoenix (Phoenix Sky Harbor International Airport — PHX), Los Angeles (Los Angeles International Airport — LAX), Chicago (Chicago O'Hare International Airport — ORD) and Dallas (Dallas/Fort Worth International Airport — DFW). These hubs benefit from frequent service and competition among carriers, which drives down economy fares.
In March, use fare calendars and flexible-date searches to find cheap economy arrival options; early March often has lower prices than late March due to spring break. Set price alerts, compare one-way fares, and look at alternate airports near your target city (for example, Ontario or Burbank near Los Angeles) to reduce costs. Midweek arrivals and early-morning flights from Denver International Airport (DEN) generally cost less.
When booking cheap economy arrivals, factor in ground transportation costs and travel time to your final destination; arriving at a budget-friendly airport may require extra transfers or a rental car. For example, flying into Phoenix (PHX) or Las Vegas (LAS) provides many rental options and shuttle services, but traffic and parking fees can add to your total cost. Compare the total door-to-door price, not just the airfare.
October often features shoulder-season promotions with lower economy fares for arrivals at many U.S. gateways due to reduced leisure travel. Airlines and OTAs may run fall sales targeting city breaks and off-peak beach escapes; however, check event calendars for destination-specific festivals that could raise prices. Use email alerts and follow airline social channels to catch October discounts.
Use the multi-city search function on flight search engines to build an open-jaw or multi-stop itinerary that strings together several cheap economy arrivals. For example, fly DEN→LAS, LAS→LAX and return LAX→DEN if those segments are individually inexpensive. Check fare rules for baggage and ensure connection times are realistic when mixing carriers. Multi-city strategies can maximize sightseeing while keeping economy class costs low.
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Events & Festivals Affecting Economy Fares from Denver International Airport (DEN)
Major events and festivals influence demand and economy fares from Denver International Airport (DEN). High-demand dates include the National Western Stock Show (January), Denver PrideFest (June), Great American Beer Festival (October) and large concert or sporting events at Ball Arena or Empower Field. Nearby destination festivals in Phoenix, Las Vegas and California markets can also increase flight prices; plan early or avoid these weekends to secure the cheapest economy fares.
Best Time to Fly from Denver International Airport (DEN) — Cheapest Economy Windows
The cheapest economy fares from Denver International Airport (DEN) are often found for Tuesday–Thursday departures and during shoulder months (January, February, September, October). For summer travel, book 6–10 weeks in advance; for winter holidays, book several months ahead. Travel midweek and at off-peak times (early morning redeyes) to save on economy fares. Flexibility with dates and airports is the single most effective strategy to find the lowest fares.
Direct vs Connecting Flights from Denver International Airport (DEN) — Economy Tradeoffs
Nonstop flights from Denver International Airport (DEN) are faster and reduce the risk of missed connections, but connecting flights are often cheaper in economy class due to lower demand for direct services on some routes. Connecting itineraries can save money but add total travel time and increase baggage-handling complexity. For the cheapest economy fares, compare nonstop and one-stop options, but factor in layover length, potential for delays and baggage transfer times when choosing connecting routes.
Airline Comparison for Economy Fares from Denver International Airport (DEN)
Frontier and Spirit (where available) typically offer the lowest base economy fares from Denver International Airport (DEN) but charge extra for baggage and seat selection. Southwest often provides competitive economy fares with two free checked bags on many domestic routes, making them cost-effective for travelers with luggage. United, American and Delta offer extensive networks with frequent nonstops and bundled perks on higher economy classes. Compare total trip cost (fare + ancillaries) when selecting the cheapest airline.
Seasonal Travel Tips for Cheapest Economy Flights from Denver International Airport (DEN)
Seasonal strategies are vital to finding the cheapest economy fares from Denver International Airport (DEN). In winter, watch for ski-season surges and consider early-December midweek travel for savings. Spring shoulder months (March, April) often provide bargains—book midweek and use flexible-date searches. Summer requires early booking for economy seats; consider redeyes and alternate airports. Fall (September–October) is one of the best seasons for cheap economy travel—use that window to travel on lower fares. Always account for weather-related disruptions and build buffer time for connections during winter.
Flight Times & Schedules from Denver International Airport (DEN) to Budget Destinations (ECONOMY)
Typical nonstop economy flight times from Denver International Airport (DEN) to budget destinations: Las Vegas (LAS) ~1 hour 45 minutes; Phoenix (PHX) ~2 hours 15 minutes; Los Angeles (LAX) ~2 hours 30 minutes; Chicago (ORD) ~2 hours 40 minutes; Dallas/Fort Worth (DFW) ~2 hours 20 minutes. Early morning and late-night (redeye) departures often have lower fares. Check schedules for increased frequency during summer and holiday periods, and aim for flights departing midweek for the most budget-friendly options.
Cheap Flights from Denver International Airport (DEN) — Economy Class Strategies
To secure the cheapest economy flights from Denver International Airport (DEN), use flexible-date searches, set fare alerts, and compare routes to nearby airports. Prioritize low-cost carriers like Frontier and Southwest for domestic economy savings, and consider mixed-carrier itineraries to lower cost. Book midweek and off-peak hours, look at one-way pricing to mix-and-match carriers, and use rewards points for discounts. Always calculate the total door-to-door cost including baggage, seat selection and ground transfers to determine the true cheapest option.
Tips
- Book 3–8 weeks in advance for most economy fares; 6–10 weeks for summer travel.
- Search alternate nearby airports (for example, Ontario or Burbank near L.A.) to reduce arrival costs.
- Set price alerts and monitor flash sales from airlines and OTAs.
- Consider basic economy fares only if you travel light and can forgo seat selection and flexible change options.
- Use multi-city searches to build low-cost itineraries that maximize sightseeing while minimizing flight expense.