Submit feedbackSubmit feedbackComplete travel information for your September journey
September is a smart month to depart from Hilo International Airport (ITO) for St. Louis: shoulder-season demand often yields lower fares and easier car rental availability on the Big Island. Most itineraries connect via Honolulu (Daniel K. Inouye International Airport - HNL) or mainland hubs such as LAX, SFO, PHX, or DEN. Expect 12–18 hours total travel time depending on layovers. Use flexible-date searches, sign up for fare alerts for 'Hilo to St. Louis flights', and consider overnighting in Honolulu to reduce tight connections. Nearby destinations to add to your Hawaii itinerary include Kailua-Kona (Big Island), Volcano National Park, and Oahu (Honolulu, Waikiki). Book early for Labor Day weekend and mid-September events; otherwise, midweek departures often save you money. CTA: Search ITO to STL September flights now and compare itineraries across Hawaiian, United, American, and Delta to find the best balance of price and travel time.
There are no nonstop flights from Hilo International Airport (ITO) to Lambert-St. Louis International Airport (STL); most itineraries in September connect through Honolulu (Daniel K. Inouye International Airport - HNL), Los Angeles (LAX), Phoenix (PHX) or San Francisco (SFO). Expect total travel time including layovers of roughly 12–18 hours depending on connection length. Book midweek and search connecting routings via HNL or mainland hubs for the best balance of price and travel time.
Typical itineraries from Hilo International Airport (ITO) to Lambert-St. Louis International Airport (STL) in September take about 12 to 18 hours door-to-door, including at least one connection at Honolulu (HNL) or a mainland hub. Flight time segments total approximately 8–11 hours of airtime; longer travel times reflect layovers and multi-leg routing. Check airlines' minimum connection times before booking to avoid tight transfers.
September is typically shoulder season after peak summer travel, so you can often find lower fares on ITO to STL routes compared with June–August. Watch for post-Labor Day fare drops and midweek departure discounts; booking 3–8 weeks in advance often yields the best deals. Use flexible-date searches and set fare alerts for primary keywords like 'Hilo to St. Louis flights' to capture price dips.
Major carriers that can be booked from Hilo International Airport (ITO) to Lambert-St. Louis International Airport (STL) include Hawaiian Airlines (via HNL and mainland partners), United Airlines (via SFO or DEN), American Airlines (via LAX or PHX), and Delta (via LAX or SLC). Many itineraries mix carriers through interline agreements. Compare total travel time, baggage rules, and change/cancellation policies before booking.
Hilo International Airport (ITO) offers rental car counters, rideshare pickup points, taxi services, and limited shuttle options. In September, car rental availability is usually good after the summer rush, but reserve in advance for weekend departures. Plan at least 90 minutes for domestic check-in and security during busier holiday weekends.
Hilo in September is warm and humid with occasional tropical showers; the risk of significant weather disruption is moderate during hurricane season in the Central Pacific. Airlines monitor conditions and may reroute or delay flights if storms approach. Allow extra travel time for connections in September, and sign up for airline flight alerts for real-time updates.
Arriving at Lambert-St. Louis International Airport (STL) in September after a multi-leg journey from Hilo International Airport (ITO) is straightforward. STL's terminals are well-connected to rental car facilities, MetroLink light rail, and airport shuttles, making it easy to reach downtown St. Louis, Clayton, or Chesterfield. September brings pleasant weather and a busy local event calendar—plan travel times accordingly and pre-book rideshare or rental cars for evenings and weekend arrivals. Nearby major cities and destinations commonly accessed from STL include downtown St. Louis (Gateway Arch), Kansas City, Springfield, MO, and Chicago via regional service. CTA: Book your STL arrival transfers now and check schedules for MetroLink and local shuttles to ensure a smooth arrival from Hilo in September.
Arrivals at Lambert-St. Louis International Airport (STL) typically land at Terminal A or B depending on the carrier; after a connecting flight from Hilo via mainland hubs, plan for U.S. domestic arrival procedures only. In September, STL experiences moderate passenger volumes—quicker customs/immigration is expected only if arriving internationally, but domestic connections should be straightforward. Use ground transportation like MetroLink, rideshare, or rental cars to reach downtown St. Louis or nearby cities such as Chesterfield and Collinsville.
September is generally outside the peak summer travel surge, so delays into Lambert-St. Louis International Airport (STL) are often less frequent than in July and August. However, Midwest weather fronts and thunderstorms can cause delays. For ITO to STL itineraries that connect through HNL or west-coast hubs, allow buffer time between segments to avoid missed connections, and monitor real-time flight status on airline websites.
Lambert-St. Louis International Airport (STL) offers MetroLink light rail to downtown St. Louis, taxis, rideshare pick-up zones, and multiple rental car companies onsite. From STL you can reach nearby major destinations such as downtown St. Louis, Clayton, Chesterfield, St. Charles, and even day-trip options to Kansas City and Springfield by regional flights or driving. In September, traffic is typically moderate, making rail a reliable choice for reaching downtown attractions like the Gateway Arch.
From Lambert-St. Louis International Airport (STL) you can access downtown St. Louis (Gateway Arch, Forest Park), Clayton business district, Chesterfield valley for shopping, and nearby universities in Edwardsville and St. Charles. For broader travel, flights or drives connect to Kansas City, Springfield, MO, and Chicago; regional rail and highways make these accessible for extended Midwest itineraries in September.
For arriving passengers from Hilo International Airport (ITO) in September, booking rideshare or rental cars a few days in advance is usually sufficient, though reserve early for weekends and fall festival dates. If you need airport hotel shuttles or corporate transport, book 1–2 weeks ahead. Use 'flights to St. Louis from Hilo' as a search phrase to find package deals that include ground transfers.
September hosts several St. Louis events such as fair and music festivals, college football kickoffs, and neighborhood street festivals, which can increase arrivals and hotel demand. Check local event calendars for Cardinal baseball schedules, college homecomings, and city festivals when planning your return from Hilo. Book flights and hotels early if your trip overlaps high-attendance events.
September can be busy on both ends of this route. On the Big Island, late-summer cultural events, farmers markets, and surf competitions near Hilo can increase local travel demand. In St. Louis, college football, music festivals, and neighborhood block parties throughout September can raise hotel and flight demand—particularly around Cardinals home games and large downtown festivals. If your travel dates coincide with major events, book flights and hotels early and expect slightly higher fares. CTA: Check event calendars for both Hilo and St. Louis and book your ITO to STL flights early for September.
The best time to fly from Hilo International Airport (ITO) to Lambert-St. Louis International Airport (STL) for lower fares and comfortable travel is often September and mid-fall. September is a shoulder month after the summer peak when airfare tends to decrease and rental car availability improves. For the lowest prices, target midweek departures and book 3–8 weeks in advance. If you prefer better weather in St. Louis, consider late spring or early fall (September–October) to avoid extreme heat and winter storms. CTA: Check flexible September dates now to lock in shoulder-season savings on ITO to STL flights.
There are no direct nonstop flights from Hilo International Airport (ITO) to Lambert-St. Louis International Airport (STL); all itineraries require at least one connection (commonly HNL or a west-coast/continental hub). Connecting flights expand route availability and can lower fares, but add baggage transfer and missed-connection risk. To minimize travel time in September, pick itineraries with a single mainland connection and short but realistic layovers (60–120 minutes depending on whether you change carriers or terminals). If convenience is a priority, choose an itinerary that keeps you on a single carrier alliance to simplify transfers and baggage handling.
Hawaiian Airlines: Strong for inter-island legs (ITO→HNL) and seamless Hawaiian connections; may require codeshare to reach STL via partner carriers. Best for travelers wanting an island-first itinerary and reliable inter-island service. United Airlines: Competitive for SFO/DEN routings to STL with large hub connectivity; generally strong schedule frequency on mainland connections. American Airlines: Often routes via LAX or PHX; useful if you prefer American’s domestic network to STL. Delta Air Lines: Routes typically route via LAX or SLC and may present solid schedule options depending on date. Evaluate total travel time, alliance benefits, checked-bag fees, and change/cancellation policies; for September travel, compare prices and layover times across these carriers to find the best itinerary for your needs.
September travel between Hilo International Airport (ITO) and Lambert-St. Louis International Airport (STL) requires planning for two climate zones: tropical Hilo and temperate St. Louis. Pack layers for warm, humid Hawaiian weather and cooler fall evenings in St. Louis. Check Pacific storm forecasts during hurricane season and allow buffer time for potential delays. Choose connections with realistic layovers (90+ minutes if changing carriers) and consider overnighting in Honolulu to break long travel days. Use luggage tracking and enroll in airline alerts for gate changes. CTA: Prepare your September itinerary now; compare ITO to STL flight options and pack for both island weather and Midwest fall.
There are no nonstop flights from Hilo International Airport (ITO) to Lambert-St. Louis International Airport (STL). Typical total travel time in September ranges from 12 to 18 hours including connections. A common itinerary is ITO → HNL (0.5–1 hour), HNL → LAX/SFO (5–6 hours), LAX/SFO → STL (3–5 hours) plus layovers. Sample departures: early-morning Hilo departures connect through Honolulu mid-morning, arriving in St. Louis late afternoon or evening local time. For the fastest routing, aim for a single mainland connection at an eastbound hub with minimal layover. When booking, verify minimum connection times and aim for at least 60–90 minutes in HNL for inter-island transfers.
To find cheap flights from Hilo International Airport (ITO) to Lambert-St. Louis International Airport (STL) in September, search flexible dates around midweek (Tuesday–Thursday) and consider itineraries with longer but inexpensive layovers through Honolulu (HNL) or west-coast hubs. Use fare alert tools and set price thresholds for keywords like 'Hilo to St. Louis flights'. Book 3–8 weeks ahead for shoulder-season savings, and compare separate one-way tickets if the savings justify different carriers for each direction. Consider flying into alternate nearby airports on the mainland and connecting to STL by a budget carrier if that lowers the total fare.