{
  "response": {
    "Key": "CHI-BEG",
    "orig": {
      "code": "CHI",
      "type": "airport",
      "city": "Chicago",
      "fullCity": "Chicago, Illinois",
      "airport": "Dupage County"
    },
    "dest": {
      "code": "BEG",
      "type": "airport",
      "city": "Belgrade",
      "fullCity": "Belgrade, Serbia",
      "airport": "Nikola Tesla Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Chicago to Belgrade?",
        "answer": "The flight from Chicago to Belgrade is about 4,990 miles and takes roughly 9 hours 50 minutes nonstop on Air Serbia, which operates the route three days a week. The return leg is longer at about 10 hours 55 minutes, a difference of over an hour due to prevailing winds. Connecting itineraries via European hubs typically add two to six hours of total travel time.",
        "methodology": "Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q1": {
        "question": "Are there any direct flights from Chicago to Belgrade?",
        "answer": "Yes, Air Serbia flies non-stop from Chicago O'Hare (ORD) to Belgrade (BEG) three times a week — on Mondays, Wednesdays, and Saturdays — with departure times between 4:40 PM and 11:55 PM. The flight covers approximately 4,985 miles and takes around 9 hours and 50 minutes eastbound, while the return is about 10 hours and 55 minutes.",
        "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours. Carrier service, flight times and distances for this route come from our flight-schedule database, which draws on published airline timetables, U.S. government schedule data, and observed operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We report the days of the week and the departure times each carrier operates. The typical flight time is the median scheduled block time, given both per carrier and across all carriers on the route; where a schedule does not publish an elapsed time, it is derived from the scheduled departure and arrival times converted to UTC. Outbound and return times are computed by the same method, so the difference between them is directly comparable and reflects prevailing winds rather than any change in derivation. Distance is the great-circle distance between the two specific airports named, so an actual flown track is typically 2-5% longer. Where shown, on-time departure and arrival rates and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; where a typical fare is shown, it comes from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold.",
        "toolsUsed": [
          "route_airlines",
          "flight_schedule"
        ]
      },
      "q3": {
        "question": "What are the ground transportation options in Belgrade?",
        "answer": "Belgrade Nikola Tesla Airport is about 15 km (9.3 mi) west of the city center. The most-used and most affordable option is the public bus: line 72 runs directly between the airport and Zeleni venac in central Belgrade, and since January 2025 all public transport in Belgrade has been free, making it an unbeatable choice for budget travelers. Taxis are available and faster, typically taking 20–30 minutes depending on traffic, but passengers should use official airport taxi counters or ride-hailing apps to avoid overcharging. Ride-share services like Car:Go and Yandex Go operate in the city, and major car rental agencies have desks at the airport for those who prefer to drive. The bus is the most used option overall, while taxis or ride-shares are the fastest door-to-door.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/Belgrade_Nikola_Tesla_Airport",
            "title": "Belgrade Nikola Tesla Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-15T15:45:17Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Transport_in_Belgrade",
            "title": "Transport in Belgrade",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-05-03T16:35:09Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Belgrade%20Nikola%20Tesla%20Airport",
            "title": "Belgrade Nikola Tesla Airport",
            "time_published": "2026-04-29T23:49:33Z"
          }
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Chicago to Belgrade?",
        "answer": "No nonstop red‑eye flights operate from Chicago to Belgrade, but several one‑stop itineraries with an overnight long leg are available. The earliest overnight leg departs Chicago around 4:05 PM on Lufthansa via Frankfurt and arrives at 7:25 AM, while the latest departures leave around 9:15 PM on British Airways via London Heathrow and arrive at 11:15 AM. Other red‑eye connections route through Munich (United, departing 6:00 PM, arriving 9:40 AM), Vienna (Austrian, 4:20 PM → 8:15 AM), Paris CDG (Air France, 5:10 PM → 8:15 AM), Copenhagen (SAS, 7:15 PM → 10:45 AM), Zurich (Swiss, 7:05 PM → 10:50 AM), and Amsterdam (KLM, 4:20 PM → 7:05 AM).",
        "methodology": "Red-eye flights are identified from scheduled local departure and arrival times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes — flagging services that depart late at night and arrive the following morning; for connecting itineraries the red-eye is based on the timing of the overnight long-haul leg.",
        "toolsUsed": [
          "redeye_flights"
        ]
      },
      "q7": {
        "question": "Which airlines usually operate this route from Chicago to Belgrade?",
        "answer": "Air Serbia operates the only nonstop flight from Chicago to Belgrade, departing O'Hare up to six times weekly on Mondays, Wednesdays, and Saturdays with multiple departure times throughout the day.",
        "methodology": "Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Chicago and Belgrade?",
        "answer": "Common layovers include Istanbul, Frankfurt, Vienna and Munich. Istanbul offers broad connections via Turkish Airlines and a single-terminal hub for efficient transfers. Frankfurt, Vienna and Munich provide extensive European networks, streamlined connections and visa‑free transit for many nationalities."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Belgrade?",
        "answer": "May, June, and September offer warm days, cool evenings, and fewer tourists than the peak summer months."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Chicago to Belgrade?",
        "answer": "Bring a passport valid for at least six months beyond your stay, check if you need a Serbian visa, and carry proof of onward travel, a payment method for bags, and any required vaccination documents."
      },
      "q12": {
        "question": "Which airport should I use in Belgrade?",
        "answer": "Belgrade has a single airport, Nikola Tesla Airport, located about 18 kilometers west of the city center."
      },
      "q13": {
        "question": "How do I get to Dupage County from the city center?",
        "answer": "You're actually flying from Chicago O'Hare, not Dupage County, so getting there from downtown is straightforward. The CTA Blue Line runs 24 hours and is the most popular and economical option, taking about 40 minutes from the Loop directly to the airport. Metra's North Central Service also connects from Union Station on weekdays, while taxis, rideshares, and airport shuttles offer door-to-door convenience at a higher cost. Driving via the Kennedy Expressway is possible with multiple parking garages and economy lots available, though traffic can be heavy.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flychicago.com/ohare/tofrom/publictransit/Pages/default.aspx",
            "title": "Public Transit | Chicago O’Hare International Airport (ORD)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://flychicago.com/ohare/tofrom/pages/default.aspx",
            "title": "Getting To and From O'Hare International Airport | Chicago O’Hare International Airport (ORD)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Transportation_in_Chicago",
            "title": "Transportation in Chicago",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-01T15:50:47Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/O%27Hare_International_Airport",
            "title": "O'Hare International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-11T09:41:03Z"
          },
          {
            "url": "https://www.flychicago.com/ohare/home/pages/default.aspx",
            "title": "O’Hare International Airport",
            "favicon": "https://www.flychicago.com/_catalogs/masterpage/favicon.ico"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Belgrade airport?",
        "answer": "Belgrade Nikola Tesla Airport has no on-site or terminal-connected hotel, so sleeping options at the airport are limited to airside seating and a few nearby hotels. The closest named hotels are Kimmiy Hotel and Kame Hotel Belgrade, both about 1.9 miles away. Hotel Mar Garni is 3.1 miles away, and Garni Hotel Zeder is 3.9 miles away.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://sleepinginairports.net/guides/belgrade-airport-guide.htm",
            "title": "Belgrade Airport Guide (BEG) - Sleeping in Airports",
            "favicon": "https://www.sleepinginairports.net/nitropack_static/oBWrHkPujHTPIaVWqdDSDhClXUyrYhhb/assets/images/optimized/rev-b853180/www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png",
            "time_published": "2018-08-23T17:45:30Z"
          },
          {
            "url": "https://sleepinginairports.net/lounges/belgrade-airport-lounges.htm",
            "title": "Belgrade Nikola Tesla   Airport Lounges (BEG) – Sleeping in Airports",
            "favicon": "https://www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png"
          },
          {
            "url": "https://activities.marriott.com/europe/serbia/belgrade/activities/belgrade_airport_to_city_center_transfers-XRFLWO?property=BEGXR",
            "title": "Belgrade Airport to City Center Transfers",
            "time_published": "2026-03-02T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Belgrade_Nikola_Tesla_Airport",
            "title": "Belgrade Nikola Tesla Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-15T15:45:17Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Belgrade%20Nikola%20Tesla%20Airport",
            "title": "Belgrade Nikola Tesla Airport",
            "time_published": "2026-04-29T23:49:33Z"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Chicago and Belgrade airports?",
        "answer": "For flights from Chicago to Belgrade, the relevant airports are Chicago O'Hare (ORD) or Midway (MDW), not DuPage, and Belgrade Nikola Tesla Airport (BEG). Mobility assistance at O'Hare and Midway includes wheelchair service and accessible facilities, while Belgrade Nikola Tesla Airport offers assistance for passengers with reduced mobility through its operator Vinci Airports; you should request help from your airline at least 48 hours before departure. Children's play areas are available in several Chicago terminals, and Belgrade Airport has family-friendly spaces, though specific play equipment may be limited.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/DuPage_Airport",
            "title": "DuPage Airport",
            "time_published": "2026-07-16T20:45:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Willowbrook,_DuPage_County,_Illinois",
            "title": "Willowbrook, DuPage County, Illinois",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-08-28T04:09:35Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Airport_City_Belgrade",
            "title": "Airport City Belgrade",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-07-16T03:46:34Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Belgrade%20Nikola%20Tesla%20Airport",
            "title": "Belgrade Nikola Tesla Airport",
            "time_published": "2026-04-29T23:49:33Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Airport%20City%20Belgrade",
            "title": "Airport City Belgrade",
            "time_published": "2026-03-20T03:13:09Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Dojno_polje_Airport",
            "title": "Airport City Belgrade",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-03-20T03:13:09Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Belgrade",
            "title": "Belgrade",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-07-20T15:02:43Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Chicago to Belgrade?",
        "answer": "Air Serbia operates the only nonstop service from Chicago to Belgrade, flying Airbus A330-200 aircraft. No other carriers offer nonstop flights on this route, and specific aircraft for connecting itineraries are not listed.",
        "methodology": "Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q18": {
        "question": "Which airline alliances serve flights from Chicago to Belgrade?",
        "answer": "Air Serbia (JU) is the only airline flying nonstop from Chicago O'Hare to Belgrade, and it is not a member of any global alliance. Other alliances may serve the route via connections, but no specific alliance carriers appear in the published schedule data for this route.",
        "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Chicago?",
        "answer": "Chicago O'Hare offers a range of lounges for departing travelers, including Air France, American's Admiral's Club locations, Delta Sky Club, LOT Business Lounge, Wingtips Lounge, Swissport Lounge, United Club, and United Polaris Lounge. Air France, Delta Sky Club, LOT Business Lounge, Swissport Lounge, and Wingtips Lounge are in Terminal 5, while United Club has locations in Terminals 1 and 2, and American's Admiral's Club and Flagship Lounge are in Terminal 3. The Air France lounge is open 05:00–20:00, Wingtips Lounge 09:00–22:00, and Swissport Lounge 07:00–00:00, with the Swissport Lounge accepting Priority Pass customers and Wingtips serving many Star Alliance and other airline passengers. United Polaris Lounge is for international first and business class only, and most clubs offer day passes for travelers without membership.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flychicago.com/ohare/ServicesAmenities/services/Pages/lounges.aspx",
            "title": "Airline Lounges | Chicago O’Hare International Airport  (ORD)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://prioritypass.com/en-GB/lounges/united-states-of-america/ohare-international",
            "title": "O'hare International Airport ORD Lounges - ORD Airport Guide and lounges. | Priority Pass",
            "favicon": "https://prioritypass.com/icon.png?icon.1k7202wk2zqql.png?dpl=1f82db4e-b1f8-481b-b911-c24ef915cc46",
            "time_published": "2026-08-18T11:40:12Z"
          },
          {
            "url": "https://www.delta.com/us/en/airports/united-states/chicago-sky-club-airport-map",
            "title": "Chicago O'Hare (ORD) Airport Map & Lounges | Delta Air Lines",
            "favicon": "https://www.delta.com/content/dam/delta-applications/dlhome/favicon.ico"
          },
          {
            "url": "https://www.prioritypass.com/en-GB/lounges/united-states-of-america/ohare-international/ord10-swissport-lounge",
            "title": "Swissport Lounge ORD AIRPORT Terminal 5 Chicago IL O Hare Intl | Priority Pass",
            "favicon": "https://www.prioritypass.com/icon.png?a4ff481221414a5c"
          },
          {
            "url": "https://aa.com/i18n/travelInformation/airportAmenities/ord-club.jsp",
            "title": "Chicago, IL (ORD)",
            "favicon": "https://aa.com/content/images/chrome/rebrand/favicon.png"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Chicago to Belgrade?",
        "answer": "Baggage allowance on Chicago to Belgrade flights depends on the airline and fare class. Basic economy tickets are usually restrictive and may not include a checked bag. Standard international economy fares typically include one checked bag and a carry‑on, while premium cabins offer more generous allowances."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Chicago to Belgrade?",
        "answer": "Typical cabin options on flights from Chicago to Belgrade include Economy and flat‑bed Business class; Premium Economy is available on select airlines depending on the routing."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies differ by airline and fare; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy typically does not."
      }
    }
  }
}