Best Flights starting from $137
from$137economy
Denver (DEN)
Tue, Sep 29
One-way
Phoenix (Any)
—
Fields updated — click View Prices to search ↑
Other Destinations
Denver (DEN) to Phoenix (PHX) in September from $28
From $28
Denver (DEN) to Minneapolis (MSP) in September from $40
From $40
Denver (DEN) to Los Angeles (LAX) in September from $42
From $42
Denver (DEN) to Dallas (DFW) in September from $44
From $44
Denver (DEN) to San Diego (SAN) in September from $44
From $44
Denver (DEN) to New Orleans (MSY) in September from $47
From $47
Flights from Other Cities
San Diego (Any) to Phoenix (Any) in September from $23
From $23
Las Vegas (Any) to Phoenix (Any) in September from $46
From $46
Spokane (GEG) to Phoenix (Any) in September from $91
From $91
Bozeman (BZN) to Phoenix (Any) in September from $94
From $94
Las Vegas (Any) to Phoenix (Any) in September from $117
From $117
Newark (EWR) to Phoenix (Any) in September from $130
From $130
✈️ Flight Guide: Denver (DEN) → Phoenix (Any)
Complete travel information for your September journey
September departures from Denver International Airport (DEN) are an excellent time to travel: summer crowds taper off while weather remains favorable for flights and fall mountain excursions. Primary keywords like 'flights from DEN to Phoenix September' and 'Denver airport September travel' reflect traveler search trends; use secondary keywords such as 'DEN to PHX nonstop' and LSI terms including 'airport security wait times', 'A Line train', and 'rental cars at DEN'. Expect moderate TSA lines, reliable A Line service to downtown Denver, and strong nonstop frequency to Phoenix-area airports. Book earlier morning nonstops to avoid afternoon thunderstorms that can affect mountain airspace. Want to find cheap DEN to Phoenix flights in September? Search now, compare carriers, and consider flexible fares to protect your travel plans.
Departing from Denver (DEN) FAQs
Denver International Airport (DEN) typically experiences moderate TSA checkpoint wait times in September as summer travel wanes and business travel picks up. Weekday mornings (6–9 AM) and late afternoons can be busier; enroll in TSA PreCheck or arrive at least 90 minutes before domestic departures to minimize stress. Check DEN's live security wait times before you leave and consider off-peak flights to save time.
Ground transportation at Denver International Airport (DEN) in September is reliable, with options including A Line rail to downtown Denver, ride-hailing, taxis, shuttles to Boulder and Colorado Springs, and rental cars onsite. Expect slightly lighter traffic than summer tourist months, but always factor extra time for peak commute hours. Book shuttle or rental car in advance for the best rates and guarantees.
September at Denver International Airport (DEN) is generally mild, but mountain weather can change rapidly — afternoon thunderstorms and early-season snow are possible at higher elevations. While DEN rarely closes, isolated delays due to thunderstorms or high winds can occur; check airline alerts and airport advisories on the day of travel. Consider travel insurance or flexible tickets during early fall if you have tight connections.
Denver International Airport (DEN) offers full-service restaurants, coffee shops, lounges, workspaces, free Wi-Fi, play areas, and extensive art installations year-round, including in September. Seasonal menus and pop-up shops sometimes appear during fall travel weeks; check terminal maps for lounge access and dining hours. For a smooth trip, reserve lounge day passes or pre-order food if you have tight connection windows.
From Denver International Airport (DEN) you can easily reach nearby Colorado destinations such as Boulder, Colorado Springs, Fort Collins, Vail, and Aspen — all accessible by rental car, shuttle, or regional bus services. September is ideal for mountain drives and fall foliage in higher elevations, so allow extra travel time for scenic routes and potential weather changes. Book car rentals or shuttles early for weekend trips into the Rockies.
Airlines maintain frequent Denver International Airport (DEN) to Phoenix (PHX) service in September, with many daily nonstop flights; however, mid-week frequencies may be slightly reduced compared to peak summer schedules. Check carrier schedules and sign up for price alerts or flexible fare options to capture good deals on Denver to Phoenix flights. For business travelers, early morning and late afternoon nonstop options are the most consistent.
September arrivals to Phoenix (All Airports) (PHXA) benefit from shoulder-season travel: slightly lower tourism density than winter and manageable heat with occasional monsoon storms. Use primary keywords like 'flights to Phoenix September' and 'arriving PHX in September' when searching for deals and schedules. Plan early-morning landings to beat afternoon storms, pre-book ground transfers to Scottsdale or Mesa, and consider renting a car for flexibility to visit Sedona or Tucson. Ready to book? Search Phoenix September flights now and compare nonstop and connecting options.
Arriving at Phoenix (Any) FAQs
Arriving to Phoenix (All Airports) (PHXA) in September means warm to hot temperatures with the tail end of the monsoon season, so plan for humid afternoons and possible thunderstorms. Ground transportation options are plentiful — Phoenix Sky Harbor offers light rail access to downtown Phoenix, and nearby airports provide rental cars, shuttles, and ride-hailing. Always check your specific arrival airport terminal for baggage claim and curbside pickup instructions to streamline your transfer.
September in the Phoenix area sees residual monsoon storms that can cause brief delays due to lightning or heavy rain, but widespread cancellations are uncommon. Airlines typically manage schedules well and issue alerts for significant weather events; monitor flight status and airport advisories on travel day. Consider booking early morning flights to avoid afternoon thunderstorm variability and to increase chances of on-time arrivals.
From Phoenix (All Airports) (PHXA) you can reach Scottsdale, Mesa, Tempe, Glendale, Tucson, and Sedona easily by rental car or shuttle services. September is a good shoulder-season time to drive to Sedona or flag down a shuttle to Tucson, with cooler mornings and fewer crowds than peak winter. Pre-book car rentals for the best rates and check traffic patterns for sporting events or festivals in the Phoenix metro area.
Phoenix Sky Harbor and surrounding airports offer a full range of amenities in September including restaurants, lounges, business centers, and free Wi-Fi; lounge access varies by carrier and terminal. Seasonal refreshes and air-conditioned waiting areas make waiting comfortable during warm afternoons. If you're connecting to regional or international flights, verify lounge access and food hours for your terminal beforehand.
Yes — pack lightweight breathable clothing, sunscreen, and stay hydrated when arriving at Phoenix (All Airports) (PHXA) in September, as daytime highs often remain in the 90s°F. Be mindful of sudden monsoon storms; keep a flexible schedule for outdoor plans and check local weather advisories. For day trips to Sedona or the Grand Canyon, plan for cooler mornings and carry layers for elevation changes.
To find the best fares to Phoenix (All Airports) (PHXA) in September, compare prices across airlines like Southwest, American, United, and Delta, use fare alerts, and consider mid-week travel for lower rates. Search both Phoenix Sky Harbor and nearby airports (Mesa, Glendale) to uncover savings; sometimes flying into a nearby airport and driving a short distance saves money. Book 3–6 weeks in advance for competitive September pricing and use primary keywords like 'cheap flights to Phoenix September' when searching.
1.0.2509.02
September Events & Festivals — Denver International Airport (DEN) and Phoenix (All Airports) (PHXA)
Phoenix area events in September often include the Arizona State Fair (late September–October), MLB regular-season games featuring the Arizona Diamondbacks, and local cultural festivals, which can increase demand at Phoenix Sky Harbor and nearby airports. In Colorado, September ushers in shoulder season: lower city crowds in Denver but growing interest for mountain drives to Vail, Aspen, and Rocky Mountain National Park for early fall colors — this can increase traffic and rental car demand at Denver International Airport (DEN). Use phrases like 'Arizona State Fair flights', 'Denver fall foliage travel', and 'September festival travel tips' when planning. CTA: check event dates and book flights and hotels early if traveling during festival weekends to secure the best rates.
Best Time to Fly from Denver International Airport (DEN) to Phoenix (All Airports) (PHXA) in September
The best time to fly from Denver International Airport (DEN) to Phoenix (All Airports) (PHXA) in September is typically mid-week (Tuesday–Thursday) and early in the morning. Early September weekdays often feature lower fares and reduced airport congestion compared with holiday weekends or late-September festival periods. For fewer weather-related interruptions, choose morning departures to avoid afternoon thunderstorms in the Rockies and late-day monsoon activity in the Phoenix area. Use search terms like 'best day to fly DEN PHX September' and 'cheap midweek Denver Phoenix' to locate optimal flights. CTA: search flexible September dates to compare mid-week pricing.
Direct vs Connecting Flights — Denver International Airport (DEN) to Phoenix (All Airports) (PHXA)
Nonstop flights between Denver International Airport (DEN) and Phoenix (All Airports) (PHXA) are the fastest and most convenient option, averaging about 2 hours 15 minutes. Connecting itineraries through hubs like Salt Lake City (SLC), Dallas/Fort Worth (DFW), or Los Angeles (LAX) can lower prices but add 1–4+ hours of travel time depending on layover length. In September, weigh the cost savings against potential weather-related delays during monsoon season or Colorado mountain storms. Use LSI terms like 'one-stop flights DEN PHX', 'nonstop vs connecting travel time', and 'layover airports' when searching. CTA: compare nonstop and one-stop options for your September travel dates to find the best balance of price and convenience.
Airline Comparison for DEN to PHXA — September Options and Tips
Southwest: Strong presence on DEN–PHXA with multiple daily nonstops and free checked bags — great for budget-conscious travelers seeking flexibility. United: Frequent nonstops with premium cabin options and strong connections via its Denver hub. American: Offers reliable services and competitive pricing, especially with loyalty program benefits for AAdvantage members. Delta: Fewer direct flights but consistent service and SkyMiles advantages for frequent flyers. Frontier: Ultra-low-cost carrier with very low base fares but fees for bags and seat selection; ideal for travelers packing light. Use keywords like 'Southwest DEN to PHX September' and 'best airline Denver Phoenix' while comparing fares. CTA: compare carriers, factor in baggage fees, and book the Denver to Phoenix flight that fits your budget and schedule.
Seasonal Travel Tips for September — DEN to PHXA (Denver to Phoenix All Airports)
Packing and preparation: For Denver departures, pack a light jacket for cool mornings and layers for mountain side trips — early snow is possible at elevation in late September. For Phoenix arrivals, pack breathable clothing, sunscreen, and a reusable water bottle to manage desert heat; monsoon storms can produce brief heavy rain, so a compact umbrella or quick-dry jacket is useful. Airport logistics: enroll in TSA PreCheck for faster security at DEN and verify terminal and lounge information for PHX to make arrivals smoother. Time your flights: morning departures reduce the chance of weather-related delays in both Denver and Phoenix. CTA: prepare your packing list for Denver to Phoenix September travel and check flight status the evening before departure.
Flight Time and Schedules — Denver International Airport (DEN) to Phoenix (All Airports) (PHXA)
Average nonstop flight time between Denver International Airport (DEN) and Phoenix (All Airports) (PHXA) is approximately 2 hours 10–2 hours 30 minutes depending on winds and routing. In September, carriers operate multiple daily nonstops, with peak frequencies during early morning and late afternoon to serve business and connecting traffic. Connecting itineraries typically route through Salt Lake City (SLC), Dallas/Fort Worth (DFW), or Los Angeles (LAX), adding 1–3 hours of total travel time. Use keywords like 'DEN to PHX flight time' and 'DEN PHX nonstop schedule' when searching, and choose morning slots to minimize monsoon-related afternoon variability. CTA: view current DEN–PHXA schedules and compare nonstop vs connecting departure times to find the best itinerary.
Cheap Flights Denver International Airport (DEN) to Phoenix (All Airports) (PHXA) in September
To find cheap flights from Denver International Airport (DEN) to Phoenix (All Airports) (PHXA) in September, search for fares 3–6 weeks before departure and focus on mid-week departures (Tuesday–Thursday) when prices are typically lower. Use price alerts, compare multi-airport options (PHX, Mesa Gateway, Tucson), and consider low-cost carriers like Southwest and Frontier for discounted nonstop fares. Keywords targeted include 'cheap flights DEN to PHX' and 'Denver to Phoenix low fare September'; include LSI terms such as 'fare alerts', 'flexible dates', and 'promo codes'. Book early-morning nonstops to avoid weather-related delays and lock in the best price. Call-to-action: compare September Denver to Phoenix fares now and set alerts to capture flash sales.