{"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": "The flight from Paris to San Francisco is about 5,570 miles and typically takes 11 hours 20 minutes nonstop. The return leg is shorter at 10 hours 40 minutes, a difference of 40 minutes due to prevailing winds.", "methodology": "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": ["flight_schedule"]}, "q3": {"question": "What are the ground transportation options in San Francisco?", "answer": "From SFO, BART rapid rail is the fastest and most-used way to downtown San Francisco, with the station in the International Terminal. Ride-share services like Uber and Lyft pick up on Level 5 of the Domestic Garage, while taxis are available at the arrivals curb. Rental cars are accessible via the AirTrain Blue Line to the consolidated Rental Car Center, and Waymo autonomous rides are also available for select passengers at the Rental Car Center. Hotel shuttles and the SamTrans bus provide additional public transit options.", "toolsUsed": [], "references": [{"url": "https://flysfo.com/passengers/ground-transportation", "title": "Ground Transportation | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-04-08T21:19:40Z"}, {"url": "https://flysfo.com/de/node/10188", "title": "Ground Transportation | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-04-08T21:19:40Z"}, {"url": "https://en.wikipedia.org/wiki/SFO", "title": "San Francisco International Airport", "time_published": "2026-04-27T05:13:36Z"}, {"url": "https://en.wikipedia.org/wiki/San_Francisco_International_Airport", "title": "San Francisco International Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-07-18T07:52:09Z"}, {"url": "https://www.flysfo.com/pt-br", "title": "Home Page | San Francisco International Airport", "time_published": "2026-01-01T00:00:00Z"}]}, "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 October, November, and September, with average fares around $747–$771. The most expensive months are June, March, and July, averaging $993–$1,101.", "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.", "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 about 11 to 14 weeks before departure, when average fares are around $943. Booking around 90 days out can yield the lowest prices near $938, while last-minute tickets can exceed $1,380. Summer and holiday periods likely push the best window earlier, so aim to book at least three months ahead for peak travel 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.", "toolsUsed": ["booking_timing"]}, "q6": {"question": "Are overnight (red‑eye) flights available from Paris to San Francisco?", "answer": "No overnight (red-eye) flights operate from Paris (CDG) to San Francisco (SFO) — there are no nonstop red-eyes on this route, and no connecting itineraries with a red-eye long leg were found.", "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": "Air France and United operate nonstop from Paris Charles de Gaulle to San Francisco. Air France flies about 24 times a week with a typical fare around $930, while United offers 14 weekly flights and a median fare near $734.", "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"]}, "q8": {"question": "If I need a connection, what are common layover cities between Paris and San Francisco?", "answer": "Common layover cities between Paris and San Francisco include London, Amsterdam, and Frankfurt, which keep total travel time competitive. London offers broad connections from Heathrow, though transit may require a visa for some nationalities. Amsterdam Schiphol and Frankfurt are efficient single‑terminal hubs with visa‑free transit for many travelers."}, "q10": {"question": "Which months have the best weather for traveling to San Francisco?", "answer": "September and October offer 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 and a valid ESTA authorization or U.S. visa. Also carry proof of onward or return travel, a payment method 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 for the Bay Area and the only one serving this route. Oakland and San Jose are alternative airports farther from downtown San Francisco."}, "q13": {"question": "How do I get to Charles de Gaulle Intl Airport from the city center?", "answer": "From central Paris, the RER B train is the most popular and often fastest public transport to Charles de Gaulle Airport, taking about 30–35 minutes from Gare du Nord. Bus 9517 (formerly RoissyBus) also connects from Saint-Denis Pleyel station, while taxis offer fixed-fare direct rides from anywhere in the city. Ride‑share services like VTCs are available and priced similarly to taxis, and driving is straightforward via the A1 or A3 motorways with ample on‑airport parking that can be booked online for discounts.", "toolsUsed": [], "references": [{"url": "https://parisaeroport.fr/en/passengers/charles-de-gaulle-airport", "title": "Welcome to Charles-de-Gaulle airport (CDG Airport) - Paris Aéroport", "time_published": "2026-03-25T23:16:15Z"}, {"url": "https://parisaeroport.fr/en/charles-de-gaulle-airport/terminal-3", "title": "Maps & Terminals at Paris Charles de Gaulle – Paris Aéroport", "time_published": "2026-03-25T23:15:25Z"}, {"url": "https://en.wikipedia.org/wiki/CDG%20Express", "title": "CDG Express", "time_published": "2026-01-29T07:39:10Z"}, {"url": "https://en.wikipedia.org/wiki/Aéroport_Charles_de_Gaulle_2_TGV_station", "title": "Aéroport Charles de Gaulle 2 TGV station", "time_published": "2026-04-23T11:27:05Z"}, {"url": "https://www.parisaeroport.fr/en/group/strategy/airport-network/paris-charles-de-gaulle-airport", "title": "Pardon Our Interruption"}]}, "q14": {"question": "Are there hotels or sleeping facilities at San Francisco airport?", "answer": "San Francisco International Airport (SFO) has a Grand Hyatt hotel connected to the terminals via the AirTrain, so no shuttle is needed. There are also hourly nap rooms and showers available in the International Terminal. Several nearby hotels like the San Francisco Airport Marriott Waterfront and The Westin San Francisco Airport offer complimentary shuttle service from the terminals.", "toolsUsed": [], "references": [{"url": "https://www.sleepinginairports.net/guides/san-francisco-airport-guide.htm", "title": "San Francisco Airport Guide (SFO) - 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": "2018-10-02T00:00:42Z"}, {"url": "https://www.marriott.com/en-us/hotels/sfobg-san-francisco-airport-marriott-waterfront/overview/?EM=DNM_SANFRANCISCOAIRPORTMARRIOTT.COM", "title": "SFO Airport Hotel | San Francisco Airport Marriott Waterfront", "time_published": "2025-02-19T00:00:00Z"}, {"url": "https://www.marriott.com/en-us/hotels/sfowi-the-westin-san-francisco-airport/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0", "title": "The Westin San Francisco Airport (Official Site) - SFO Hotel", "time_published": "2025-02-19T00:00:00Z"}, {"url": "https://www.flysfo.com/passengers/shop-dine-relax?content_type=things_to_do&location=3&sort_by=random", "title": "Shop/Dine/Relax | San Francisco International Airport", "time_published": "2025-10-22T23:13:26Z"}, {"url": "https://www.flysfo.com/passengers/shop-dine-relax?content_type=All&gate_area=All&https://www.flysfo.com/passengers/shop-dine-relax?https://www_flysfo_com/passengers/shop-dine-relax?https://www_flysfo_com/passengers/shop-dine-relax?location=2&location=1659&security=All&service_tags=All&sort_by=random", "title": "Shop/Dine/Relax | San Francisco International Airport", "time_published": "2025-10-22T23:13:26Z"}, {"url": "http://www.flysfo.com/de/node/14691", "title": "Press Releases | San Francisco International Airport", "time_published": "2025-07-09T15:54:20Z"}]}, "q15": {"question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at San Francisco Intl Airport?", "answer": "San Francisco International Airport offers currency exchange services and free Wi‑Fi throughout all terminals. A Reflection Room in the terminals provides a quiet space for prayer and meditation. Currency exchange counters are located in the International Terminal and Terminal 3, while free Wi‑Fi is available airport‑wide.", "toolsUsed": [], "references": [{"url": "https://flysfo.com/passengers/shop-dine-relax", "title": "Shop/Dine/Relax | San Francisco International Airport", "time_published": "2026-03-12T16:15:43Z"}, {"url": "http://www.flysfo.com/welcome-terminal-3", "title": "Welcome to Terminal 3 | San Francisco International Airport", "favicon": "http://www.flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-05-08T21:34:33Z"}, {"url": "https://en.wikipedia.org/wiki/San_Francisco_International_Airport", "title": "San Francisco International Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-07-18T07:52:09Z"}, {"url": "https://en.wikipedia.org/wiki/San%20Francisco%20International%20Airport", "title": "San Francisco International Airport", "time_published": "2026-04-28T21:12:40Z"}, {"url": "https://flysfo.com/passengers/services-amenities", "title": "Services & Amenities | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-03-03T22:32:54Z"}]}, "q17": {"question": "What aircraft are typically used on flights from Paris to San Francisco?", "answer": "Nonstop flights from Paris Charles de Gaulle to San Francisco are operated by Air France using the Boeing 777-300ER. For connecting itineraries, the most common long-haul aircraft include the Airbus A330-900 Neo via Lisbon, the Boeing 787-9 via Dublin or Los Angeles, and the Airbus A321-200 Neo via Boston; the exact type can vary by day and airline. Onboard Wi-Fi and seatback entertainment are widely available across these services.", "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": "Air France (a SkyTeam member) and United Airlines (a Star Alliance member) operate nonstop flights from Paris Charles de Gaulle to San Francisco. Other alliances may serve the route via connections, but those two are the only nonstop carriers.", "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 Paris?", "answer": "At Paris Charles de Gaulle, your best lounge options when departing for San Francisco depend on your terminal. In Terminal 1, the Lufthansa Business Lounge offers a quiet space with complimentary food and drinks, accessible with a Star Alliance business-class ticket or Gold status. Terminal 2E houses the YotelAir Paris Charles de Gaulle, a pay-per-use lounge open around the clock with showers, a bar, and sleeping pods, and it's also available through Priority Pass. If you're flying Air France in business class or hold SkyTeam Elite Plus status, the airline's own lounges in Terminals 2E and 2F are the natural choice, though specific names aren't detailed in the published listings.", "toolsUsed": [], "references": [{"url": "https://americanexpress.com/en-ca/travel/lounges/the-platinum-card/CDG", "title": "American Express Lounges at Paris Charles de Gaulle Airport | Amex CA", "time_published": "2026-05-01T00:00:00Z"}, {"url": "https://my.prioritypass.com/en-GB/lounges/france/paris-charles-de-gaulle", "title": "Charles De Gaulle International Airport CDG Lounges - CDG Airport Guide and lounges.  | Priority Pass", "time_published": "2024-11-05T00:00:00Z"}, {"url": "https://parisaeroport.fr/en/passengers/charles-de-gaulle-airport", "title": "Welcome to Charles-de-Gaulle airport (CDG Airport) - Paris Aéroport", "time_published": "2026-03-25T23:16:15Z"}, {"url": "https://americanexpress.com/de-de/travel/lounges/the-platinum-card/CDG", "title": "American Express Lounges at Paris Charles de Gaulle Airport | Amex DE", "time_published": "2026-05-03T00:00:00Z"}, {"url": "https://parisaeroport.fr/en/charles-de-gaulle-airport/terminal-3", "title": "Maps & Terminals at Paris Charles de Gaulle – Paris Aéroport", "time_published": "2026-03-25T23:15:25Z"}]}, "q21": {"question": "What is the baggage allowance on this route from Paris to San Francisco?", "answer": "On Paris–San Francisco flights, Basic Economy often excludes a checked bag. Standard economy typically includes one checked bag and a carry‑on, while premium cabins allow two checked bags and larger carry‑ons."}, "q22": {"question": "What cabin and seat options are typical from Paris to San Francisco?", "answer": "On Paris to San Francisco flights you can typically find Economy, Premium Economy, and flat-bed Business class; First class is available on select airlines."}, "q23": {"question": "Are same‑day changes or standby possible on this route?", "answer": "Policies differ by airline and fare class; flexible and premium cabin tickets generally allow same‑day changes or standby, while basic economy fares usually do not."}}}}