{
  "response": {
    "Key": "CDG-SFO",
    "orig": {
      "code": "CDG",
      "type": "airport",
      "city": "Paris",
      "fullCity": "Paris, France",
      "airport": "Charles de Gaulle Intl Airport"
    },
    "dest": {
      "code": "SFO",
      "type": "airport",
      "city": "San Francisco",
      "fullCity": "San Francisco, California",
      "airport": "San Francisco Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Paris to San Francisco?",
        "answer": "A nonstop flight from Paris (CDG) to San Francisco (SFO) typically takes about 11 hours 15 minutes to 11 hours 30 minutes. The return flight from San Francisco to Paris is often longer, usually around 10 hours 30 minutes to 10 hours 45 minutes, due to prevailing winds. With one stop, total travel time commonly ranges from 13 to 15 hours, depending on the layover city."
      },
      "q1": {
        "question": "Are there any direct flights from Paris to San Francisco?",
        "answer": "Yes, there are direct nonstop flights from Paris (CDG) to San Francisco (SFO) operated by two airlines: Air France and United Airlines. Both carriers fly the route daily — Air France offers about four daily departures and United offers two, giving a combined total of roughly six nonstop flights per day.",
        "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. Carrier service and weekly frequencies are summarized 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). Where available, on-time and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, and typical fares from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold.",
        "toolsUsed": [
          "route_airlines",
          "flight_schedule"
        ]
      },
      "q2": {
        "question": "Are there visa requirements to travel from Paris to San Francisco?",
        "answer": "Yes, there are visa requirements for traveling from Paris, France to San Francisco, USA. U.S. citizens do not need a visa to enter the U.S., but French citizens and most other foreign nationals require either a visa or an ESTA authorization under the Visa Waiver Program for short visits. Always check the latest U.S. entry requirements based on your nationality before travel. For the return from San Francisco to Paris, U.S. citizens can enter the Schengen Area visa-free for up to 90 days, while other nationalities should verify if they need a Schengen visa."
      },
      "q3": {
        "question": "What are the ground transportation options in San Francisco?",
        "answer": "San Francisco International Airport (SFO) offers several ground transportation options to the city center. The BART rapid transit system is the most used, reaching downtown in about thirty minutes for a low fare. SamTrans buses are cheaper but slower. Taxis are available at designated zones and cost a flat rate to the city center, taking around thirty minutes without traffic. Ride-share services like Uber and Lyft operate from the top level of the domestic parking garage, with similar travel times. Shared shuttle vans provide door-to-door service but may take longer due to multiple stops. Car rentals are available but parking in downtown San Francisco is expensive and scarce, making them impractical for city stays. Most travelers prefer BART for its efficiency and cost-effectiveness."
      },
      "q4": {
        "question": "When is the cheapest time to fly from Paris to San Francisco?",
        "answer": "The cheapest months to fly from Paris to San Francisco are April (around $744), September ($770), and March ($784), while the most expensive are June ($1121), February ($1097), and January ($1067).",
        "methodology": "This 'good deal' estimate shows a representative best price for each departure date across roughly a 12-month window (about 3 months back and 9 months forward). It is built from real flight prices found by Priceline users searching this route, accumulated into a price history for each departure date. Rather than weighting all of that history equally, we apply exponential time decay so recent prices dominate — a price seen yesterday counts almost in full, one from about a month ago roughly a third, and prices from a few months back very little — giving a figure that tracks today's market instead of a stale long-run average. Clear price outliers are removed before any calculation, departure dates with no observations are filled in from nearby dates, and the resulting curve is lightly smoothed so it reads as a clean seasonal trend rather than day-to-day noise. For this route, fares for the requested travel direction were unavailable, so the pattern shown is derived from the reverse direction, which shares the same seasonal demand cycle.",
        "relevant": true,
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Paris to San Francisco?",
        "answer": "For flights from Paris to San Francisco, the optimal booking window is roughly 8 to 11 weeks before departure, with average fares around $902. Booking about 60 days ahead can yield the lowest price near $896, while last‑minute tickets (0–5 days out) jump to $1,300–$1,400. Summer and holiday periods often push the best window slightly earlier — aim for 10–12 weeks if traveling during peak times.",
        "methodology": "This booking-window guidance is built from the same real flight prices found by Priceline users searching this route, re-grouped by how many days before departure each price was seen (from the departure day out to about 180 days ahead) across the route's price history. At each booking lead time we report the 25th-percentile price — the cheaper end of what travelers were quoted, rather than the rock-bottom minimum (which can be a fluke) or the average (which is pulled up by expensive last-minute fares). The buy-or-wait advice then applies a risk premium that grows as departure approaches, since seat availability shrinks and prices become less predictable; using that adjusted curve we flag windows where waiting is likely to save a meaningful amount (at least $20 or 5%) versus windows where booking now is the better call. Isolated single-day recommendations are filtered out, so the advice only reflects a window that holds for several days in a row. For this route, fares for the requested travel direction were unavailable, so the pattern shown is derived from the reverse direction, which shares the same seasonal demand cycle.",
        "relevant": true,
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Paris to San Francisco?",
        "answer": "No overnight (red‑eye) flights are available from Paris (CDG) to San Francisco (SFO) — neither nonstop nor connecting itineraries with a red‑eye long leg were found in the schedule data.",
        "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 Paris to San Francisco?",
        "answer": "Non‑stop flights from Paris Charles de Gaulle (CDG) to San Francisco (SFO) are operated by Air France and United Airlines. In the schedule data, Air France offers around 24 weekly flights with a typical median fare near $1,237, while United operates approximately 14 weekly flights at a median around $974. Both airlines fly daily, giving you multiple departure times to choose from.",
        "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.",
        "relevant": true,
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Paris and San Francisco?",
        "answer": "Typical layover cities include London, Amsterdam, and Dublin, which keep total travel time competitive. London and Amsterdam offer broad connections and efficient transfers, while Dublin provides US preclearance, saving time upon arrival in San Francisco."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Paris to San Francisco?",
        "answer": "Departures are reasonably reliable, though afternoon flights can be delayed by congestion at CDG. Morning departures on Air France and United tend to have better on‑time records."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to San Francisco?",
        "answer": "September to November offers San Francisco's warmest, sunniest weather with fewer tourists than summer."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Paris to San Francisco?",
        "answer": "Bring a passport valid for at least six months beyond your stay, a valid U.S. visa or ESTA authorization, proof of onward or return travel, payment for baggage, and any required vaccination certificates."
      },
      "q12": {
        "question": "Which airport should I use in San Francisco?",
        "answer": "San Francisco International is the primary airport, located about 13 miles south of downtown, and handles most international and domestic flights. Oakland International across the bay is a base for Southwest and some low‑cost carriers, while San Jose International serves the South Bay and Silicon Valley. For San Francisco itself, SFO is the most convenient choice."
      },
      "q13": {
        "question": "How do I get to Charles de Gaulle Intl Airport from the city center?",
        "answer": "From central Paris to CDG, the RER B train is the most popular and affordable, taking about 30–40 min. Roissybus and Le Bus Direct are slightly slower. Taxis and rideshares are faster door‑to‑door but cost significantly more. Driving and parking are possible but expensive."
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at San Francisco airport?",
        "answer": "Yes, San Francisco International Airport has an on-site hotel. The Grand Hyatt at SFO is located within the airport, directly connected to all terminals via the AirTrain, so no shuttle is required. There are no capsule hotels or sleeping pods inside SFO. Other nearby hotels offer shuttle service."
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at San Francisco Intl Airport?",
        "answer": "San Francisco International Airport has currency exchange desks in the International Terminal and Terminal 3. A multi‑faith chapel is located pre‑security in the International Terminal. Free Wi‑Fi is available throughout all terminals."
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Paris and San Francisco airports?",
        "answer": "Paris Charles de Gaulle provides free wheelchair assistance, accessible toilets, and assistance call points; children’s play areas are in multiple terminals. San Francisco International offers wheelchair services, visual paging, and a sensory room; kids’ spots are in Terminals 2 and 3. Request help from your airline 48 hours before travel."
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Paris to San Francisco?",
        "answer": "Nonstop flights from Paris CDG to San Francisco are operated with the Airbus A350-900 and Boeing 777-300ER, both by Air France, though the exact type can vary by day. On connecting itineraries, common long-haul aircraft include the Airbus A330-900 Neo (via Lisbon), Boeing 787-9 (via Los Angeles), and Airbus A321-200 Neo (via Boston or New York), with the specific aircraft depending on the airline and routing. Wi-Fi and seatback entertainment are widely available across these aircraft types.",
        "methodology": "Aircraft types are taken from the equipment each operating carrier schedules on this route, drawn from published airline timetables and airline equipment schedules in our flight-schedule database. They describe typical scheduled aircraft and can vary with seasonal or day-of-week assignments and last-minute equipment swaps.",
        "toolsUsed": [
          "route_aircraft"
        ]
      },
      "q18": {
        "question": "Which airline alliances serve flights from Paris to San Francisco?",
        "answer": "Nonstop flights from Paris (CDG) to San Francisco are operated by Air France, a SkyTeam member, and United Airlines, which belongs to Star Alliance. No oneworld carrier flies the route nonstop, though oneworld connections are available via other hubs; neither of the two nonstop operators is an unaligned carrier.",
        "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.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Paris?",
        "answer": "At Paris Charles de Gaulle, the Air France La Première lounge in Terminal 2E serves first‑class passengers with a spa and private suites, while the Air France Business lounges in Terminals 2E and 2F offer showers and a wine bar. The Star Alliance Lounge in Terminal 1 welcomes business‑class travellers and elite members, and the Cathay Pacific Lounge in Terminal 2A accepts eligible oneworld passengers."
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Paris to San Francisco?",
        "answer": "Baggage rules on Paris–San Francisco flights depend on the airline and fare type. Basic economy tickets generally do not include a checked bag, while standard economy usually allows one checked bag and one carry‑on. Premium cabins offer higher limits. Always verify with the airline."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Paris to San Francisco?",
        "answer": "You can expect Economy, often Premium Economy, and flat-bed Business class on this route; First class is uncommon."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Same‑day changes or standby depend on the airline and fare class, with flexible and premium cabin tickets offering the most options."
      },
      "q24": {
        "question": "What are the cheapest days and times to fly from Paris to San Francisco?",
        "answer": "The cheapest day to fly from Paris to San Francisco is Wednesday, with an average fare around $1,162, while Sunday is the most expensive at about $1,324. The cheapest time to depart is in the evening, where fares can drop as low as $660.",
        "methodology": "The cheapest day of the week and time of day to depart are drawn from the same large sample of real fares Priceline users found on this route in the last 72 hours, grouped by the day of the week and by the time-of-day window of the outbound departure, with the lowest and average price reported for each.",
        "relevant": true,
        "toolsUsed": [
          "departure_timing"
        ]
      },
      "q25": {
        "question": "What is a good price for a flight from Paris to San Francisco?",
        "answer": "A great deal on a flight from Paris to San Francisco is anything under $839, while the typical price is about $1,116. Most fares fall between $800 and $1,400, with prices occasionally dropping as low as $660.",
        "methodology": "The typical price, the lowest fare, a 'great deal' threshold, and how fares are spread across price bands are summarized from a large sample of the real fares Priceline users found on this route in the last 72 hours, with a small fraction of extreme outlier fares excluded from the range.",
        "relevant": true,
        "toolsUsed": [
          "price_context"
        ]
      }
    }
  }
}