Submit feedbackComplete travel information for your September journey
In September, O'Hare International Airport (ORD) sees steady transatlantic demand with flexible scheduling for travelers bound for Athens. Peak departure days are mid-week for lower fares, while weekend flights often carry higher prices due to leisure travel. For Chicago-area flyers (including Milwaukee and Indianapolis), compare itineraries that connect through major European hubs for lower fares or opt for premium cabins if convenience is a priority. CTA and ride-share options are available 24/7; remember to arrive 3 hours before international departures to clear check-in and security efficiently. Use fare alerts and flexible dates to capture the best September deals from ORD to ATH.
Direct flights from O'Hare International Airport (ORD) to Athens International Airport Eleftherios Venizelos (ATH) are seasonal and may appear in September on select carriers. Many travelers will find one-stop options via European hubs such as London, Frankfurt, Amsterdam or Istanbul; search both direct and connecting itineraries to compare price and total travel time.
For September travel, book 2–4 months in advance to secure better fares and desirable flight times from O'Hare International Airport (ORD). Business-class seats and weekend departures often sell out earlier; monitoring price alerts and using flexible date searches will help capture discounts.
Beyond O'Hare International Airport (ORD), travelers can consider Midway Airport (Chicago Midway), Milwaukee Mitchell (MKE) and Indianapolis International (IND) for alternative fares and schedules. These nearby major cities and airports sometimes offer better connections or lower prices, though ground travel time should be weighed in overall itinerary planning.
By September, public health checks have largely returned to standard passport and security screening at O'Hare International Airport (ORD); however, passengers should verify Greece entry requirements, visa rules, and any airline health guidelines before departure. Carry printed and digital copies of your passport, any required visas, and proof of vaccination or negative test if mandated by the destination.
The CTA Blue Line provides reliable, budget-friendly service from downtown Chicago to O'Hare International Airport (ORD), while taxis and ride-hailing can be faster depending on time-of-day traffic. For early September flights, allow extra time for airport security lines and international check-in — arriving 3 hours before departure is recommended.
Baggage policies are set by the operating airline, not O'Hare International Airport (ORD). For transatlantic flights to Athens, expect stricter weight and size limits on economy tickets; always check your carrier's allowance and fees before traveling and consider premium or flexible fares if you need extra bags.
September arrivals at Athens International Airport Eleftherios Venizelos (ATH) benefit from lower crowds and pleasant weather, making transfers to Athens center and Piraeus efficient. Travelers arriving from O'Hare International Airport (ORD) should allow at least 1.5–2 hours for passport control and luggage, then plan 30–60 minutes for the transfer to central Athens or up to 2 hours to reach Piraeus depending on traffic. Book ferries or domestic flights early if heading to Santorini, Mykonos or Heraklion, and take advantage of off-peak hotel rates and cultural sites throughout the city.
The X95 express bus and Metro Line 3 both provide direct, cost-effective service from Athens International Airport Eleftherios Venizelos (ATH) to Syntagma and Monastiraki in central Athens. In September, traffic is lighter than peak summer months, so buses and taxis are efficient; for groups or heavy luggage, pre-booked transfers can save time and stress.
US citizens traveling from O'Hare International Airport (ORD) to Athens International Airport Eleftherios Venizelos (ATH) do not need a visa for short tourism stays under 90 days, but a valid passport is required. Check Greek and EU entry rules before travel as policies can change; carry identification and printed proof of onward/return travel when possible.
Baggage claim times at Athens International Airport Eleftherios Venizelos (ATH) vary by flight but generally take 20–45 minutes after landing for transatlantic arrivals. In September, lines through passport control are usually shorter than July/August peaks, though occasional flight bunching can increase wait times; consider Global Entry or fast-track services if available.
Yes, in September it is often feasible to land at Athens International Airport Eleftherios Venizelos (ATH) and reach the ferry port at Piraeus the same day, especially with morning arrivals. Allow 1.5–3 hours for transfer from ATH to Piraeus (traffic dependent), and book ferries in advance for popular routes to Santorini or Mykonos to secure seats.
Direct drive/shuttle services from Athens International Airport Eleftherios Venizelos (ATH) to Thessaloniki exist but are long (6–7+ hours); most travelers prefer short domestic flights or overnight trains. For Heraklion (Crete), flying from ATH to Heraklion Nikos Kazantzakis Airport (HER) is the fastest option; September schedules are plentiful as tourist season winds down.
September in Athens is warm and pleasant, with average highs around 28°C (82°F) and cooler evenings near 20°C (68°F). The month sees minimal rain compared with autumn months, making it ideal for exploring archaeological sites and islands; bring lightweight layers and sun protection for daytime excursions.
