Submit feedbackComplete travel information for your September journey
September at Denver International Airport (DEN) is a transitional month: summer tourism winds down while fall university schedules and business travel pick up. Expect consistent daily nonstop flights to Phoenix Sky Harbor International Airport (PHX) with peak windows in early morning and late afternoon. Security lanes and TSA PreCheck remain the best way to streamline your DEN departure; allow extra time during Labor Day weekend when traffic and lines spike. Nearby travelers from Boulder, Colorado Springs, Fort Collins, Aspen and Vail can leverage the RTD A Line or pre-book shuttle services for a smooth start to their trip. For cheap DEN to PHX fares in September, set price alerts, check midweek travel, and book 3–6 weeks ahead to secure competitive domestic prices. CTA: Search and book cheap flights from Denver International Airport (DEN) to Phoenix Sky Harbor International Airport (PHX) for September now to lock in the best rates.
Denver International Airport (DEN) offers lounges, free Wi-Fi, multiple dining options, family restrooms, TSA PreCheck lanes and on-site car rental centers. In September, expect seasonal dining promotions and extended summer hours at many shops; arrive 90–120 minutes before domestic departures to allow time for security and any seasonal crowds.
For Denver International Airport (DEN) departures to Phoenix Sky Harbor International Airport (PHX) in September, plan to arrive 90 minutes before a domestic nonstop and 120 minutes for flights with checked bags or peak morning/evening schedules. September can still see busy travel days around Labor Day weekend and university move-in weeks, so adjust arrival times accordingly.
Yes, Denver International Airport (DEN) offers multiple nonstop flights daily to Phoenix Sky Harbor International Airport (PHX) operated by major carriers such as United Airlines, Southwest Airlines and Alaska Airlines. Nonstop options are common year-round and can be more frequent in September as leisure travel to Phoenix remains steady with warm fall weather.
To find cheap DEN to PHX flights in September, search early-morning or late-evening departures, use fare comparison tools, set price alerts, and be flexible with travel dates around weekends and holidays. Consider booking 3–6 weeks in advance for domestic fall travel and check low-cost carriers like Southwest for promotional fares and companion deals.
Baggage policies for flights from Denver International Airport (DEN) to Phoenix Sky Harbor International Airport (PHX) depend on the airline and fare class; most major carriers include a carry-on and personal item but charge for checked bags on basic economy fares. In September, check your airline’s official baggage rules before travel and consider pre-purchasing checked luggage to save money and avoid gate-check fees.
Denver International Airport (DEN) provides RTD A Line rail service to downtown Denver, express shuttles, rideshare pickup areas, airport shuttles to Boulder and Colorado Springs, and multiple car rental companies on-site. In September, expect steady demand from travelers, so book shuttles or rental cars in advance if you need transfers to nearby destinations like Boulder, Colorado Springs, Fort Collins, Aspen or Vail.
September arrivals at Phoenix Sky Harbor International Airport (PHX) from Denver International Airport (DEN) should prepare for warm conditions, occasional monsoon-related thunderstorms, and steady domestic flight service. Typical nonstop flight time is 1 hour 45 minutes to 2 hours. Plan ground transit to Scottsdale, Tempe or Mesa using the airport’s light rail connection, rideshare zones or pre-booked shuttles. For outdoor excursions to Sedona or Flagstaff, consider renting a car at PHX and checking weather for afternoon storms. CTA: Book your DEN to PHX flights for September and reserve ground transportation ahead to ensure a smooth arrival at Phoenix Sky Harbor International Airport (PHX).
When arriving at Phoenix Sky Harbor International Airport (PHX) in September, anticipate warm-to-hot temperatures and busy domestic arrival terminals with several daily flights from Denver International Airport (DEN). Baggage claim and rideshare pickup areas are well-signposted; plan about 20–40 minutes from gate to curb depending on arrival time and baggage volumes.
Nonstop flight time from Denver International Airport (DEN) to Phoenix Sky Harbor International Airport (PHX) is typically about 1 hour 45 minutes to 2 hours, depending on winds and routing. Total door-to-door travel time should account for boarding, taxiing, and airport transfers to nearby destinations like Scottsdale, Tempe, Mesa, Tucson, Sedona or Flagstaff.
Phoenix Sky Harbor International Airport (PHX) provides Valley Metro light rail to downtown Phoenix, airport shuttle services to Scottsdale and Tempe, rental cars, and rideshares. In September, the light rail and shuttle services operate regularly, but reserve airport shuttles in advance if traveling during major events or conventions in the Phoenix metropolitan area.
September in Phoenix typically means lingering high temperatures and the tail end of monsoon season, which can bring isolated storms and brief airport delays at Phoenix Sky Harbor International Airport (PHX). Monitor weather alerts and airline notifications before travel; pack a water bottle and plan for hot arrivals, particularly if connecting to outdoor destinations like Sedona or Flagstaff.
From Phoenix Sky Harbor International Airport (PHX), travelers can quickly reach Scottsdale, Tempe, Mesa, Tucson, Sedona and Flagstaff by car, shuttle or public transit. Scottsdale and Tempe are the closest for leisure and business travelers, while Sedona and Flagstaff are popular day-trip and outdoor destinations accessible by rental car or regional shuttles.
For evening arrivals at Phoenix Sky Harbor International Airport (PHX) in September, pre-book a rideshare or rental car to avoid peak pickup waits, and check into downtown Phoenix or Scottsdale hotels with free airport shuttles. Evening temperatures are more moderate than daytime highs, making transfers to outdoor dining or nightlife in Scottsdale and Tempe more comfortable.
September features several events that can influence DEN–PHX travel. In Phoenix, the Arizona State Fair (late September to October) and pro sports preseason or early-season games can increase demand at Phoenix Sky Harbor International Airport (PHX). Denver sees university move-in weekends and early-season college football games that can impact departures at Denver International Airport (DEN). If you’re traveling in September, check event calendars for Scottsdale, Tempe and downtown Phoenix as well as Denver-area events in Boulder and Vail. CTA: Review event dates before booking DEN to PHX flights in September to avoid crowded travel days and higher rates.
For Denver to Phoenix travel in September, midweek flights (Tuesday–Thursday) and early-morning departures are often cheapest and least likely to be delayed. Avoid Labor Day weekend and major convention dates in Phoenix if possible, as demand and prices spike. Late September can be a sweet spot: temps in Phoenix begin to moderate while leisure demand softens, leading to more competitive fares. CTA: Compare midweek morning flight options from DEN to PHX for September to find the best combination of price and reliability.
Nonstop flights from Denver International Airport (DEN) to Phoenix Sky Harbor International Airport (PHX) are usually the preferred option for most travelers due to shorter total travel time (about 2 hours). Connecting itineraries via hubs can sometimes be cheaper but add several hours. In September, nonstop frequency remains high; choose a connecting flight only if the savings justify the added layover and potential for missed connections. CTA: Compare nonstop DEN to PHX fares first, then check connecting options if you need to reduce costs.
Major carriers serving Denver International Airport (DEN) to Phoenix Sky Harbor International Airport (PHX) include United Airlines, Southwest Airlines and Alaska Airlines. Southwest often competes on price with flexible change policies and two free checked bags on many fares; United provides network connectivity for international connections and premium cabin options; Alaska offers competitive service and frequent flyer partnerships. For September travel, compare base fares, baggage rules and change fees — Southwest’s checked-bag policy can offer savings for families, while United may provide more convenient connections for onward travel. CTA: Compare carrier fares and policies for your September DEN to PHX trip to choose the best value.
Pack lightweight layers for Phoenix Sky Harbor International Airport (PHX) arrivals in September: hot daytime temperatures can quickly shift to cooler evenings. Carry a refillable water bottle and sun protection for outdoor excursions to Scottsdale or Sedona. From Denver International Airport (DEN), be prepared for variable mountain weather; early fall storms can affect drive times to the airport. Reserve rental cars or shuttles in advance for transfers to Mesa, Flagstaff or Colorado destinations. CTA: Prepare your packing list and book ground transport ahead for a smooth September trip from DEN to PHX.
Nonstop flights from Denver International Airport (DEN) to Phoenix Sky Harbor International Airport (PHX) generally take about 1 hour 45 minutes to 2 hours. Airlines typically operate several daily frequencies, with morning and late-afternoon peaks; early-morning departures often have better on-time performance. During September, schedule reliability is usually consistent, though monsoon-related weather at PHX or mountain storms near DEN can cause occasional timing shifts. When booking, review the carrier’s published schedule and consider buffer time for connections to Scottsdale, Tempe or Sedona transfers. CTA: Check updated schedules and choose early flights for higher on-time rates.
To find cheap flights from Denver International Airport (DEN) to Phoenix Sky Harbor International Airport (PHX) in September, search early-morning and late-evening departures and be flexible with midweek travel dates. Use fare comparison engines and set price alerts; low-cost carriers often post limited-time sales that can lower prices for domestic nonstop routes. Avoid peak holiday windows like Labor Day weekend when fares can spike, and consider booking 3–6 weeks in advance for the best domestic September deals. CTA: Start a price alert for DEN to PHX September flights and compare nonstop options now.