{ "response": { "Key": "DEN-SFO", "orig": { "code": "DEN", "type": "airport", "city": "Denver", "fullCity": "Denver, Colorado", "airport": "Denver 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 Denver to San Francisco?", "answer": "The flight from Denver to San Francisco is about 970 miles and typically takes 2 hours 42 minutes. The return leg is slightly quicker at about 2 hours 30 minutes, a 12-minute difference that isn't large enough to mention directionally. United, Frontier, and Southwest all operate nonstop service on this route.", "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 Denver to San Francisco?", "answer": "Three airlines fly nonstop from Denver to San Francisco — United, Southwest, and Frontier — all operating daily with a combined 357 weekly flights. United runs the most frequencies (183 per week), followed by Southwest (135) and Frontier (39); typical flight time is about 2 hours and 42 minutes, and red‑eye departures are available from all three 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. 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. 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. 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_airlines", "flight_schedule", "redeye_flights", "route_aircraft" ] }, "q3": { "question": "What are the ground transportation options in San Francisco?", "answer": "San Francisco International Airport offers many ground transportation options, with BART rapid rail being the fastest and most-used way to reach downtown San Francisco and the East Bay, taking about 30 minutes and costing around $10. Ride-share services like Lyft and Uber pick up on Level 5 of the Domestic Garage, while taxis are available curbside outside Arrivals; both offer door-to-door service but can be slowed by traffic. SamTrans buses serve the airport 24/7 with routes to San Francisco and the Peninsula, and Caltrain provides commuter rail to San Jose via a BART transfer at Millbrae. Rental cars are centralized at the Rental Car Center, accessed by the AirTrain Blue Line, and many local hotels offer complimentary shuttles. BART is generally the most reliable and popular choice for avoiding traffic, while ride-share is preferred for convenience with luggage.", "toolsUsed": [ "article_lookup" ], "references": [ { "url": "https://flysfo.com/passengers/ground-transportation/public-transit", "title": "Public Transit | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-08-17T20:51:53Z" }, { "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": "2026-08-17T22:27:43Z" }, { "url": "https://www.flysfo.com/passengers/ground-transportation/public-transit/ride-bart", "title": "BART | San Francisco International Airport", "favicon": "https://www.flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2025-06-26T22:28:56Z" }, { "url": "https://www.flysfo.com/", "title": "San Francisco International Airport | SFO Official Site", "favicon": "https://www.flysfo.com/themes/custom/blueskies/favicon.ico" }, { "url": "https://flysfo.com/passengers/ground-transportation/getting-around-sfo", "title": "Getting Around SFO | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-08-11T21:48:22Z" } ] }, "q4": { "question": "When is the cheapest time to fly from Denver to San Francisco?", "answer": "Average fares from Denver to San Francisco bottom out around $227 in early February, making that the cheapest stretch to fly. February, September, and January are the most affordable months overall, with averages of $227, $234, and $235 respectively. The most expensive period is early June, when average fares peak around $301.", "methodology": "Seasonal fares come from Priceline's own air booking-summary archive, analysed in-house and refreshed monthly. For each day of the year we take a representative round-trip fare, a blend of the 25th-percentile and average ticket price over the route's bookings, and smooth the series into a seasonal curve; the half-month low and high and the monthly figures quoted here are averages of that curve. Thin and international routes borrow their seasonal shape from the nearest busy routes, with the price level anchored to the route's own bookings.", "toolsUsed": [ "seasonal_prices" ] }, "q5": { "question": "How far in advance should I book tickets from Denver to San Francisco?", "answer": "For Denver to San Francisco, the best fares come when you book about 4 to 7 weeks ahead of departure, with prices averaging $169 in that window. Booking around 35 days out is the single cheapest point at $167, while waiting until the last week can push fares to $294 or more. For summer and holiday periods, demand is higher, so booking earlier than that 4-7 week range is wise to avoid the steepest prices.", "methodology": "Booking-window guidance comes from the same monthly in-house analysis of Priceline's own air booking-summary archive. We aggregate the route's bookings by how many days before departure they were made, from about 180 days out to the day of travel, smooth the curve, and highlight the stretch of lead times with the lowest average fare. Thin and international routes borrow the curve shape from the nearest busy routes, anchored to the route's own price level. It reflects current fares and is refreshed monthly.", "toolsUsed": [ "booking_timing" ] }, "q6": { "question": "Are overnight (red‑eye) flights available from Denver to San Francisco?", "answer": "Yes, overnight red‑eye flights are available from Denver to San Francisco. United, Southwest, and Frontier all operate nonstop red‑eyes daily, with departures typically between 9:05 PM and 10:45 PM. These flights land around midnight or just after, arriving the same night or in the very early hours — not the next morning.", "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 Denver to San Francisco?", "answer": "United, Southwest, and Frontier operate nonstop from Denver to San Francisco. United offers the most service with 183 weekly flights, Southwest has 135 weekly flights, and Frontier provides 39 weekly flights. Fares in the schedule data are not available for this route, so specific per‑carrier pricing isn't provided.", "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 Denver and San Francisco?", "answer": "This is a domestic route with numerous nonstop flights. If you need a connection, common layovers are Salt Lake City, Las Vegas, and Phoenix, which offer efficient transfers and keep total travel time reasonable." }, "q9": { "question": "How reliable are on‑time arrivals on this route from Denver to San Francisco?", "answer": "United Airlines is the most reliable carrier on the Denver to San Francisco route, with 77.0% of arrivals within 15 minutes of schedule and a cancellation rate of 0.7%. Frontier follows at 69.9% on-time arrivals and a 0.5% cancellation rate, while Southwest trails at 58.4% on-time and 0.5% cancellations.", "methodology": "On-time arrival 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; a flight counts as on time when it arrives within 15 minutes of schedule. Carriers are ranked by arrival on-time rate on this route, and the carrier list itself comes 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).", "toolsUsed": [ "flight_schedule" ] }, "q10": { "question": "Which months have the best weather for traveling to San Francisco?", "answer": "September and October offer the warmest and sunniest weather with fewer tourists." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Denver to San Francisco?", "answer": "For domestic travel, bring a Real ID or passport, ensure it matches your ticket, and carry payment for baggage and any required health documents." }, "q12": { "question": "Which airport should I use in San Francisco?", "answer": "San Francisco International (SFO) is the primary airport, conveniently located about 13 miles south of downtown. It serves as a major hub for United Airlines and Alaska Airlines, with extensive domestic and international connections. The Bay Area also has Oakland International (OAK) across the bay, a focus city for Southwest Airlines, popular for low‑cost domestic flights. San Jose International (SJC) is farther south in Silicon Valley, convenient for tech business travellers. For most travellers to San Francisco itself, SFO is the best choice." }, "q13": { "question": "How do I get to Denver Intl Airport from the city center?", "answer": "From downtown Denver, the RTD A Line train runs every 15 minutes, 24/7, and reaches Denver International Airport in about 37 minutes, making it the most popular and budget-friendly option. Ride-share services like Uber/Lyft and taxis are faster at roughly 25–35 minutes but cost more, with pickup on Level 5. Shared-ride shuttles provide door-to-door service to hotels, while driving yourself means using the off-site rental car shuttle or airport parking; the A Line remains the best balance of speed, cost, and reliability.", "toolsUsed": [ "article_lookup" ], "references": [ { "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/", "title": "Getting To and From | Denver International Airport", "favicon": "https://www.flydenver.com/apple-touch-icon.png", "time_published": "2026-05-15T18:36:33Z" }, { "url": "https://flydenver.com/parking-and-transportation/to-and-from/public-bus-or-train-rtd", "title": "Public Bus or Train | Denver International Airport", "favicon": "https://flydenver.com/apple-touch-icon.png", "time_published": "2026-05-15T18:47:06Z" }, { "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/airport-transit-center/", "title": "Airport Transit Center | Denver International Airport", "favicon": "https://www.flydenver.com/apple-touch-icon.png", "time_published": "2026-05-15T18:45:07Z" }, { "url": "https://faa.gov/air_traffic/publications/domesticnotices/dom25010_af.html", "title": "DENVER INTERNATIONAL AIRPORT (KDEN) standard taxi routes", "favicon": "https://faa.gov/air_traffic/publications/domesticnotices/assets/images/favicon.ico" }, { "url": "https://www.fly.faa.gov/fly/flyfaa/flyfaaindex?ARPT=DEN&p=1", "title": "Denver International Airport" } ] }, "q14": { "question": "Are there hotels or sleeping facilities at San Francisco airport?", "answer": "San Francisco International Airport has the Grand Hyatt at SFO, an upscale hotel about 5 minutes away via AirTrain with no shuttle required. FreshenUp in the International Terminal also offers private nap rooms and paid showers for shorter rest periods.", "toolsUsed": [ "article_lookup" ], "references": [ { "url": "https://flysfo.com/passengers/services/nap-rooms", "title": "Nap Rooms & Shower Facilities | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-06-24T19:24:47Z" }, { "url": "https://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://sleepinginairports.net/reviews/san-francisco-airport-reviews.htm", "title": "San Francisco Airport Reviews (SFO) – Sleeping in Airports", "favicon": "https://www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png", "time_published": "2025-02-10T18:15:46Z" } ] }, "q15": { "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at San Francisco Intl Airport?", "answer": "San Francisco International Airport (SFO) offers a Reflection Room for quiet self-reflection and meditation, which includes a prayer room, located within the terminals. Currency exchange services are available at SFO, though the specific terminal locations are not detailed in the current information. Free Wi-Fi is not explicitly mentioned in the provided services listing, so I cannot confirm its availability or location.", "toolsUsed": [ "article_lookup" ], "references": [ { "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" }, { "url": "https://flysfo.com/sites/default/files/2024-06/240614_SFO_Tabloid_Face A_T1-no-foodcourt_WEB_0621.pdf", "title": "240614_SFO_Tabloid_Face A_T1_Template_MASTER Update.indd", "time_published": "2024-06-17T18:03:02Z" }, { "url": "https://flysfo.com/passengers", "title": "Passengers | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-04-14T23:46:29Z" }, { "url": "https://www.flysfo.com/", "title": "San Francisco International Airport | SFO Official Site", "favicon": "https://www.flysfo.com/themes/custom/blueskies/favicon.ico" }, { "url": "https://en.wikipedia.org/wiki/SFO", "title": "San Francisco International Airport", "time_published": "2026-04-27T05:13:36Z" } ] }, "q16": { "question": "Are there accessible services or children's facilities at the Denver and San Francisco airports?", "answer": "Denver International Airport offers electric carts to transport elderly or disabled passengers to airline gates, a Hidden Disabilities Sunflower Lanyard program for travelers with hidden disabilities, and accessible parking at all airport-owned facilities; travelers can request assistance through Airport Butler or by contacting Metro Taxi with 48 hours advance notice. San Francisco International Airport provides wheelchair and guided assistance arranged through your airline, TSA Cares for screening support (call at least 72 hours ahead), companion care restrooms, adult changing tables, a Sensory Room in Terminal 1 near Gate C2, and TTY/visual paging services. Both airports support service animals and accessible ramps throughout, and at SFO you can request wheelchair help from an airline representative at the ticketing counter upon arrival.", "toolsUsed": [ "article_lookup" ], "references": [ { "url": "https://flydenver.com/at-the-airport/services-and-amenities/accessibility-services", "title": "Accessibility and Mobility | Denver International Airport", "favicon": "https://flydenver.com/apple-touch-icon.png", "time_published": "2026-08-10T20:24:04Z" }, { "url": "https://www.flydenver.com/event/61719/", "title": "Accessibility Resource Fair | Denver International Airport", "favicon": "https://www.flydenver.com/apple-touch-icon.png", "time_published": "2026-07-22T17:07:58Z" }, { "url": "https://flydenver.com/about-den/facilities", "title": "Airport Facilities and Grounds | Denver International Airport", "favicon": "https://flydenver.com/apple-touch-icon.png", "time_published": "2026-08-03T22:42:42Z" }, { "url": "https://airporttech.tc.faa.gov/Products/Databases/Denver-Instrumentation/Browse-Database/Weather", "title": "AirportTech > Products > Databases > Denver Instrumentation > Browse Database > Weather", "favicon": "https://airporttech.tc.faa.gov/Portals/0/favicon-FAA.ico?ver=L21jzf-llJYYjFtxLcsyqg%3d%3d" }, { "url": "https://en.wikipedia.org/wiki/Denver_International_Airport", "title": "Denver International Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-09-11T12:43:01Z" }, { "url": "https://www.flysfo.com/de/node/10035", "title": "Accessibility | San Francisco International Airport", "time_published": "2026-04-30T20:33:21Z" }, { "url": "https://flysfo.com/passengers/services-amenities/accessibility", "title": "Accessibility | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-08-12T20:12:42Z" }, { "url": "https://flysfo.com/passengers/services-amenities/accessibility/at-sfo", "title": "At SFO | San Francisco International Airport", "favicon": "https://flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-05-21T22:27:23Z" }, { "url": "https://www.flysfo.com/de/node/14867", "title": "At SFO | San Francisco International Airport", "time_published": "2026-04-15T15:54:00Z" }, { "url": "https://www.flysfo.com/passengers/services-amenities/medical-services", "title": "Medical Services | San Francisco International Airport", "favicon": "https://www.flysfo.com/themes/custom/blueskies/favicon.ico", "time_published": "2026-05-26T21:54:18Z" } ] }, "q17": { "question": "What aircraft are typically used on flights from Denver to San Francisco?", "answer": "United operates the most flights between Denver and San Francisco, using Boeing 737 family aircraft including the 737-900 and 737 MAX 9, plus the Airbus A321neo. Southwest also flies the route with Boeing 737 family aircraft, specifically the 737-700, while Frontier uses Airbus A320 family planes.", "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 Denver to San Francisco?", "answer": "United (Star Alliance), Southwest, and Frontier fly nonstop from Denver to San Francisco. Southwest and Frontier are unaligned carriers, so no oneworld or SkyTeam airline offers nonstop service on this route, though they may serve it via connections.", "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 Denver?", "answer": "Denver International Airport offers several lounge options for departing passengers, including the American Airlines Admirals Club near Gate C-32 on the mezzanine level, the American Express Centurion Lounge on the C Gates mezzanine near gate C-46, and the Capital One Lounge (operated by Plaza Premium) near Gate A-34 on the mezzanine level. Delta Sky Club is located past security at the north end of Concourse A on the bridge from Jeppesen Terminal. United operates multiple United Club locations, with clubs at A Gates West near Gate A-25, B Gates East near Gate B-44, B Gates West near Gate B-32 (temporarily closed), and United Club Fly near Gate B-60. A USO Denver lounge is also available on Level 4 above the mezzanine level of the center of Concourse A. For a free rest option, a Rest and Recharge area with comfortable seating and recliners is available on the Concourse A mezzanine.", "toolsUsed": [ "article_lookup" ], "references": [ { "url": "https://flydenver.com/at-the-airport/lounge-areas", "title": "Denver Airport Lounges | Denver International Airport", "favicon": "https://flydenver.com/apple-touch-icon.png", "time_published": "2026-08-03T22:37:03Z" }, { "url": "https://www.flydenver.com", "title": "Denver International Airport | DEN", "favicon": "https://www.flydenver.com/apple-touch-icon.png", "time_published": "2026-09-08T14:54:34Z" }, { "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/DEN", "title": "American Express Lounges at Denver International Airport | Amex US", "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png" }, { "url": "https://my.prioritypass.com/en-GB/lounges/united-states-of-america/denver-international", "title": "Denver International Airport DEN Lounges - DEN Airport Guide and lounges. | Priority Pass", "favicon": "https://my.prioritypass.com/icon.png?a4ff481221414a5c" } ] }, "q21": { "question": "What is the baggage allowance on this route from Denver to San Francisco?", "answer": "Baggage rules depend on the airline and fare. Basic economy typically excludes a free checked bag and may restrict carry-on to a personal item. Standard economy often includes a carry-on and charges for checked bags, while premium cabins include both." }, "q22": { "question": "What cabin and seat options are typical from Denver to San Francisco?", "answer": "On this domestic route, nearly all flights offer Economy and a larger front cabin seat, with flat-bed Business available only on select widebody aircraft operated by a few carriers; Premium Economy is not common." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies vary; full‑fare and elite status travellers may request same‑day changes or standby, but Basic Economy tickets seldom permit it." } } } }