{"response": {"Key": "WAS-US", "orig": {"code": "WAS", "type": "airport", "city": "Washington", "fullCity": "Washington, United States", "airport": "Ronald Reagan National Airport"}, "dest": {"code": "US", "type": "country", "country": "United States"}, "faq": {"q0": {"question": "Which cities in United States can I fly to from Washington?", "answer": "From Washington, D.C., you can fly to numerous cities across the United States, including major hubs like New York, Chicago, Los Angeles, and San Francisco. Non-stop routes are available to many destinations from the three area airports: Reagan National, Dulles, and BWI. Travelers choose cities based on interests such as business, tourism, or connecting to regional destinations."}, "q3": {"question": "Which airlines fly from Washington to United States?", "answer": "This is a domestic route within the U.S. Major airlines from Washington include American, Delta, United and Southwest with non-stop and one-stop options."}, "q4": {"question": "When is the cheapest time to fly from Washington to United States?", "answer": "The cheapest months to fly from Washington to destinations across the United States are January, November, and December, when fares can dip significantly below the annual average, while June and March tend to be the priciest. Booking about 4 to 6 weeks ahead typically yields the best rates, and midweek departures are generally cheaper than weekend flights. Peak summer and major holidays like Thanksgiving and Christmas usually see higher prices.", "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. 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."}, "q12": {"question": "When is the best time of year to visit United States?", "answer": "The best time to visit the United States varies by region, but generally spring (April to June) and autumn (September to October) offer mild weather and lighter crowds across many popular destinations. Summer (June to August) is peak season with high prices and crowds, especially in national parks and coastal areas."}, "q13": {"question": "How do I get to Ronald Reagan National Airport from the city center?", "answer": "From downtown Washington, D.C., the fastest and most popular way to reach Ronald Reagan National Airport (DCA) is the Metro's Blue or Yellow Line, which has an elevated station directly connected to Terminal 2 by pedestrian bridges. Taxis and ride-shares like Uber and Lyft offer door-to-door convenience and are available at all terminals, while on-airport parking garages and an economy lot provide options for those driving themselves. Metro is typically the cheapest option, with taxis and ride-shares costing more, and parking rates varying by duration.", "toolsUsed": ["article_lookup"], "references": [{"url": "https://www.flyreagan.com/dca/reagan-national-frequently-asked-questions", "title": "flyreagan.com - Reagan National Frequently Asked Questions", "favicon": "https://www.flyreagan.com/themes/custom/mwaa_barrio/favicon.ico"}, {"url": "https://www.flyreagan.com/", "title": "Official Website of Ronald Reagan Washington National Airport - DCA", "favicon": "https://www.flyreagan.com/themes/custom/mwaa_barrio/favicon.ico", "time_published": "2026-06-16T00:00:00Z"}, {"url": "https://en.wikipedia.org/wiki/Ronald%20Reagan%20Washington%20National%20Airport", "title": "Ronald Reagan Washington National Airport", "time_published": "2026-04-22T18:33:09Z"}, {"url": "https://en.wikipedia.org/wiki/Ronald%20Reagan%20Washington%20National%20Airport%20station", "title": "Ronald Reagan Washington National Airport station", "time_published": "2026-04-07T00:26:26Z"}, {"url": "https://www.mwaa.com/ipw-2017-archived", "title": "IPW 2017 - Archived", "time_published": "2021-02-01T00:00:00Z"}]}}}}