{"response": {"Key": "US-DEN", "orig": {"code": "US", "type": "country", "country": "United States"}, "dest": {"code": "DEN", "type": "airport", "city": "Denver", "fullCity": "Denver, Colorado", "airport": "Denver Intl Airport"}, "faq": {"q0": {"question": "From which cities in United States can I fly to Denver?", "answer": "You can fly nonstop to Denver from 160 U.S. cities, with the busiest gateways being Chicago (627 weekly flights), Phoenix (590), Las Vegas (487), New York (485), and Los Angeles (477). Major airlines serving these routes include Southwest, United, Frontier, American, Delta, and JetBlue, with typical flight times ranging from under an hour from Colorado Springs to about four and a half hours from the East Coast. Travelers typically choose their departure city based on proximity and flight frequency, with larger hubs offering more daily options and often lower fares. For those not near a nonstop gateway, one-stop connections are widely available through major airline hubs like Dallas, Atlanta, or Chicago.", "methodology": "The US departure cities with nonstop service to this destination, their weekly flight frequencies, typical flight times, airlines, and red-eye availability 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 identify every US airport with scheduled nonstop service to the destination, group them into their metropolitan areas, and rank the cities by scheduled weekly departures; the typical flight time is the median scheduled duration, and red-eye availability is flagged from scheduled local departure and arrival times.", "toolsUsed": ["country_to_city"]}, "q1": {"question": "How long is the flight from United States to Denver?", "answer": "Nonstop flights to Denver from major U.S. airports typically range from about 1 hour 50 minutes from Phoenix to 4 hours 25 minutes from New York. From Chicago, the flight is around 2 hours 40 minutes, while Los Angeles and San Diego are both about 2 hours 25 minutes. Return flight times are generally similar, though headwinds can add a few minutes when flying west to Denver.", "methodology": "The US departure cities with nonstop service to this destination, their weekly flight frequencies, typical flight times, airlines, and red-eye availability 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 identify every US airport with scheduled nonstop service to the destination, group them into their metropolitan areas, and rank the cities by scheduled weekly departures; the typical flight time is the median scheduled duration, and red-eye availability is flagged from scheduled local departure and arrival times.", "toolsUsed": ["country_to_city"]}, "q2": {"question": "Are there direct flights from United States to Denver?", "answer": "There are nonstop flights from many U.S. cities to Denver, with 160 gateways offering direct service. Major nonstop city pairs include Chicago (ORD) served by Southwest, Frontier, United, and American; Phoenix (PHX) by Southwest, United, Frontier, and American; and Las Vegas (LAS) by Frontier, Southwest, and United. New York (primarily LGA) has nonstops on United, Delta, JetBlue, Frontier, and Southwest, while Los Angeles (LAX) is served by United, Southwest, Frontier, American, and Delta. Flight times range from about 1 hour 50 minutes from Phoenix to 4 hours 25 minutes from New York.", "methodology": "The US departure cities with nonstop service to this destination, their weekly flight frequencies, typical flight times, airlines, and red-eye availability 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 identify every US airport with scheduled nonstop service to the destination, group them into their metropolitan areas, and rank the cities by scheduled weekly departures; the typical flight time is the median scheduled duration, and red-eye availability is flagged from scheduled local departure and arrival times.", "toolsUsed": ["country_to_city"]}, "q3": {"question": "Which cities in United States are usually cheapest or easiest for flying to Denver?", "answer": "Denver is a major hub for United and Southwest, so departures from their focus cities are cheapest and most frequent. United offers the most options from Houston, Chicago, Newark and San Francisco. Southwest provides strong service from Phoenix, Las Vegas and Dallas Love Field. Smaller cities often connect through these hubs."}, "q4": {"question": "Which airlines fly from United States to Denver?", "answer": "United, Southwest, Frontier, American, Delta, JetBlue, and Alaska fly nonstop from the US to Denver. United, American, and Delta are in Star Alliance, oneworld, and SkyTeam respectively.", "methodology": "The US departure cities with nonstop service to this destination, their weekly flight frequencies, typical flight times, airlines, and red-eye availability 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 identify every US airport with scheduled nonstop service to the destination, group them into their metropolitan areas, and rank the cities by scheduled weekly departures; the typical flight time is the median scheduled duration, and red-eye availability is flagged from scheduled local departure and arrival times.", "toolsUsed": ["country_to_city"]}, "q5": {"question": "When is the cheapest time to fly from United States to Denver?", "answer": "Flights from major US cities to Denver are typically cheapest in January and February, with midweek departures and early morning or late-night flights often offering lower fares. Book at least three weeks ahead and avoid ski season weekends and summer holidays for the best pricing."}, "q6": {"question": "How far in advance should I book flights from United States to Denver?", "answer": "For flights from the United States to Denver, aim to book 3 to 6 weeks ahead, but secure tickets 8 to 10 weeks early if traveling during major holidays like Thanksgiving, Christmas, or spring break, when demand peaks."}, "q8": {"question": "What is the baggage allowance on flights from United States to Denver?", "answer": "Baggage rules on domestic flights to Denver vary by airline and fare class. Basic economy tickets often charge for checked bags, while standard economy may include a carry-on but still charge for the first checked bag. Premium cabins like first class usually allow two free checked bags. Always confirm with your airline."}, "q9": {"question": "Are overnight or red eye flights available from United States to Denver?", "answer": "Yes, red-eye and overnight flights to Denver are common from many US cities, including Chicago, New York, Los Angeles, and Atlanta. Typical patterns include late-evening departures from the East Coast arriving close to midnight local time, which can be convenient for travelers wanting a full day at their destination or origin. From the West Coast, flights are shorter and often operate during daytime hours, though some late-night options exist. Many travelers prefer these flights to maximize daytime activities and avoid peak airport crowds.", "methodology": "The US departure cities with nonstop service to this destination, their weekly flight frequencies, typical flight times, airlines, and red-eye availability 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 identify every US airport with scheduled nonstop service to the destination, group them into their metropolitan areas, and rank the cities by scheduled weekly departures; the typical flight time is the median scheduled duration, and red-eye availability is flagged from scheduled local departure and arrival times.", "toolsUsed": ["country_to_city"]}, "q10": {"question": "What time of day is usually cheapest for flights from United States to Denver?", "answer": "Flights from the US to Denver are often cheapest when departing in the early morning or late evening, as these off-peak times tend to have lower demand. Afternoon flights may be pricier, especially on popular travel days. Keep in mind that fare patterns can shift based on the day of the week and season, so comparing options across a few departure times is wise."}, "q11": {"question": "Which airport will I arrive at and how do I get from Denver Intl Airport to downtown Denver?", "answer": "Flights to Denver will arrive at Denver International Airport (DEN), the sole major airport serving the city. To reach downtown, the Regional Transportation District (RTD) A Line commuter train departs directly from the airport transit center and arrives at Denver Union Station in about 37 minutes. Public buses, taxis, and ride-share services like Uber and Lyft are also available, with driving times to downtown typically ranging from 30 to 45 minutes depending on traffic.", "toolsUsed": ["article_lookup"], "references": [{"url": "https://www.flydenver.com/parking-and-transportation/to-and-from/airport-transit-center/", "title": "Airport Transit Center | Denver International Airport", "time_published": "2026-02-24T17:09:34Z"}, {"url": "https://flydenver.com/connections/", "title": "Connections | Denver International Airport", "favicon": "https://flydenver.com/apple-touch-icon.png", "time_published": "2023-09-14T15:33:21Z"}, {"url": "https://en.wikipedia.org/wiki/Automated_Guideway_Transit_System_(Denver_International_Airport)", "title": "Automated Guideway Transit System (Denver International Airport)", "time_published": "2026-06-01T08:54:40Z"}, {"url": "https://en.wikipedia.org/wiki/Denver%20International%20Airport", "title": "Denver International Airport", "time_published": "2026-04-30T15:08:23Z"}, {"url": "https://www.faa.gov/?action=searchForAirport&airportcode=PSR", "title": "Federal Aviation Administration", "favicon": "https://www.faa.gov/themes/custom/faa/favicon.png", "time_published": "2026-07-17T12:00:00Z"}]}, "q12": {"question": "Which cabin and seat options are typical on flights from United States to Denver?", "answer": "Domestic flights to Denver typically offer standard economy and a larger recliner-style first class seat rather than lie-flat business; premium economy is uncommon and true lie-flat business is rare on these routes."}, "q13": {"question": "Are there hotels or sleeping facilities at Denver airport?", "answer": "Denver International Airport (DEN) does not have on-site transit hotels, capsule hotels, or sleeping pods within its terminals. However, there are several nearby hotels connected by shuttle, such as the Westin Denver International Airport which is located at the airport and connected via a short indoor walkway, and various other hotels in the surrounding area that offer complimentary shuttle service.", "toolsUsed": ["article_lookup"], "references": [{"url": "https://sleepinginairports.net/airport-hotels/transit-hotels.htm", "title": "Transit Hotels – 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": "2026-06-22T14:15:16Z"}, {"url": "https://www.sleepinginairports.net/usa/sandiego.htm", "title": "San Diego Airport Guide (SAN) - Sleeping in Airports", "time_published": "2026-05-29T21:56:08Z"}, {"url": "https://www.flydenver.com/job/job_posting-3-72824/", "title": "Airport Operations Supervisor | Denver International Airport", "time_published": "2026-05-12T09:00:46Z"}, {"url": "https://www.flydenver.com/job/job_posting-3-73608/", "title": "Airport Call Center Supervisor - Denver International Airport | Denver International Airport", "favicon": "https://www.flydenver.com/apple-touch-icon.png", "time_published": "2026-06-16T09:00:36Z"}, {"url": "https://en.wikipedia.org/wiki/Denver%20International%20Airport", "title": "Denver International Airport", "time_published": "2026-04-30T15:08:23Z"}, {"url": "https://www.flydenver.com/job/job_posting-3-73478/", "title": "Terminal Operations Officer - Denver International Airport | Denver International Airport", "favicon": "https://www.flydenver.com/apple-touch-icon.png", "time_published": "2026-06-16T09:00:44Z"}]}, "q14": {"question": "What are the best airport lounge options at Denver airport?", "answer": "Denver International Airport (DEN) has two primary lounge options. The Centurion Lounge in Concourse C is accessible to American Express Platinum and Centurion cardholders, offering premium food, a full bar, and a quiet space to work or relax. The Delta Sky Club in the Main Terminal, Concourse A, welcomes Delta One passengers, SkyTeam Elite Plus members, and those with an eligible Delta credit card or a single-visit pass, and features a full bar, premium snacks, and flight monitors. Both lounges provide complimentary Wi-Fi and comfortable seating, but note that access is subject to capacity and operating hours.", "toolsUsed": ["article_lookup"], "references": [{"url": "https://americanexpress.com/en-gb/travel/lounges/the-platinum-card/DEN", "title": "American Express Lounges at Denver International Airport | Amex GB", "time_published": "2026-05-03T00:00:00Z"}, {"url": "https://www.flydenver.com/", "title": "Denver International Airport | DEN", "favicon": "https://www.flydenver.com/apple-touch-icon.png", "time_published": "2026-06-02T21:34:27Z"}, {"url": "https://flydenver.com/at-the-airport", "title": "Exciting Things to Do at Denver International Airport", "time_published": "2026-02-18T15:39:31Z"}, {"url": "https://www.americanexpress.com/en-us/travel/lounges/the-centurion-card-idc-en/DEN/Delta-Sky-Club-Main-Terminal-Concourse-A-IgRTEiZDls/", "title": "Delta Sky Club at Denver International Airport | Amex US", "time_published": "2026-03-18T00:00:00Z"}, {"url": "https://carsandstays.delta.com/Denver-Hotels-Sleep-Inn-Suites-Denver-International-Airport.h23533743.Hotel-Information?categorySearch=any_option&chkin=2026-07-06&chkout=2026-07-07&destType=MARKET&destination=Denver%2C+CO%2C+United+States+of+America+%28DEN-All+Airports%29&latLong=39.74483000000001%2C-104.94829500000002&pwa_ts=1782175590171&referrerUrl=aHR0cHM6Ly9jYXJzYW5kc3RheXMuZGVsdGEuY29tL0hvdGVsLVNlYXJjaA%3D%3D&regionId=6139084&rfrr=HSR&rm1=a2&searchId=b9103c12-38ab-46f5-86a7-f3447411bdbe&selectedRatePlan=383244565&selectedRoomType=218717901&sort=RECOMMENDED&top_cur=USD&top_dp=126&useRewards=false&x_pwa=1", "title": "Sleep Inn & Suites Denver International Airport", "favicon": "https://carsandstays.delta.com/favicon.ico", "time_published": "2026-06-23T09:32:24Z"}]}}}}