{
  "response": {
    "Key": "IAD-SAL",
    "orig": {
      "code": "IAD",
      "type": "airport",
      "city": "Washington D.C.",
      "fullCity": "Washington D.C., United States",
      "airport": "Washington Intl Airport"
    },
    "dest": {
      "code": "SAL",
      "type": "airport",
      "city": "San Salvador",
      "fullCity": "San Salvador, El Salvador",
      "airport": "Arnulfo Romero Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Washington D.C. to San Salvador?",
        "answer": "There are no nonstop flights from Washington Dulles (IAD) or Reagan National (DCA) to San Salvador (SAL). With one stop, the fastest total travel time is typically 6 to 7 hours, depending on the connection. Common layover cities include Miami, Houston, Atlanta, Panama City, and San José. Return flights often take a similar duration."
      },
      "q1": {
        "question": "Are there any direct flights from Washington D.C. to San Salvador?",
        "answer": "Yes, there are direct nonstop flights from Washington Dulles (IAD) to San Salvador (SAL) operated by four airlines: Avianca (AV), Volaris El Salvador (N3), United Airlines (UA), and Frontier (F9). All four carriers offer daily service, with multiple departures spread throughout the day — from early morning (as early as 1:55 AM) through the evening (up to 7:35 PM), so the route is very well served.",
        "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 Washington D.C. to San Salvador?",
        "answer": "Yes, there are visa requirements for traveling from Washington D.C. to San Salvador depending on your nationality. U.S. citizens do not need a visa for tourism or business stays up to 90 days, but must have a passport valid for at least six months and may need proof of onward travel. Travelers of other nationalities should check with Salvadoran authorities, as many can enter visa-free while others require a visa. For Salvadoran citizens traveling to the U.S., a visa is generally required unless they hold a passport from a Visa Waiver Program country."
      },
      "q3": {
        "question": "What are the ground transportation options in San Salvador?",
        "answer": "San Salvador’s main international airport, Monseñor Óscar Arnulfo Romero International Airport (SAL), is located about forty kilometers from the city center. Taxis are the most commonly used option, with official airport taxis offering fixed fares and a journey time of around forty-five minutes to an hour depending on traffic. Ride-share services like Uber are available and often cheaper than taxis, though pickup locations may be restricted. There is no direct mass transit from the airport to downtown San Salvador; public buses serve nearby roads but require a walk and are not recommended for visitors with luggage due to safety and convenience concerns. Car rentals are available at the airport and are useful for exploring beyond the city, but driving in San Salvador can be challenging. Most travelers use taxis or ride-share for their reliability and ease."
      },
      "q4": {
        "question": "When is the cheapest time to fly from Washington D.C. to San Salvador?",
        "answer": "Based on seasonal price data for flights from Washington D.C. (IAD) to San Salvador (SAL), the cheapest months are April (average $371), May ($420), and March ($430), with low season spanning March through June. The most expensive period is December (average $751), followed by February ($632) and January ($612), marking the high season from November through February.",
        "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.",
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Washington D.C. to San Salvador?",
        "answer": "For flights from Washington D.C. (IAD) to San Salvador (SAL), the best fares are typically found when booking 6 to 9 weeks ahead, with the absolute lowest around $458 at about 45 days before departure. Prices rise sharply for last-minute bookings, reaching around $578 at departure, and creep up gradually when booking more than 3 months out. For summer or holiday travel, demand is higher, so aiming for the earlier end of that window or even 10-12 weeks ahead can help secure better rates.",
        "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.",
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Washington D.C. to San Salvador?",
        "answer": "No overnight (red-eye) flights are available from Washington D.C. (IAD) to San Salvador (SAL) — the schedule shows no nonstop red-eyes on this route, and no connecting itineraries with a red-eye long leg were found either.",
        "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 Washington D.C. to San Salvador?",
        "answer": "From Washington D.C. (IAD) to San Salvador (SAL), nonstop flights are operated by Avianca (AV), Volaris El Salvador (N3), United Airlines (UA), and Frontier Airlines (F9) according to the schedule data. Avianca offers the most frequent service with 78 weekly flights, followed by Volaris El Salvador with 47, United with 21, and Frontier with 8. All four carriers operate daily flights, though specific departure times vary throughout the 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.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Washington D.C. and San Salvador?",
        "answer": "Common layovers include Miami, Atlanta, Houston and Panama City, offering good connectivity and efficient transfers. Miami and Atlanta provide frequent onward flights, while Houston and Panama City serve as major hubs for Central American routes. U.S. citizens do not need a visa for transit in these cities."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Washington D.C. to San Salvador?",
        "answer": "On-time performance is generally good, though afternoon thunderstorms at IAD can cause delays. Morning flights, particularly on Avianca and United, tend to depart more punctually."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to San Salvador?",
        "answer": "November to February offers the best weather for traveling to San Salvador, with the dry season bringing sunny days, lower humidity, and comfortable temperatures, along with fewer crowds outside the holiday peak."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Washington D.C. to San Salvador?",
        "answer": "Bring a passport valid for at least six months beyond your arrival date. You may need a visa or proof of onward travel. Have a payment method for baggage and check if a yellow fever vaccination certificate is required."
      },
      "q12": {
        "question": "Which airport should I use in San Salvador?",
        "answer": "San Salvador has one main international airport, El Salvador International Airport (SAL), also known as Comalapa. It is about 40 km from downtown, serving all international flights with airlines like Avianca, United, and American."
      },
      "q13": {
        "question": "How do I get to Washington Intl Airport from the city center?",
        "answer": "The most popular way to reach Dulles (IAD) from downtown DC is the Silver Line Metrorail, taking about 50–55 minutes at low cost. Rideshares and taxis cost more but are faster, typically 35–45 minutes. Shuttle buses like the Washington Flyer are also available. Driving and parking on-site is the most expensive option."
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at San Salvador airport?",
        "answer": "San Salvador International Airport (SAL) does not have on-site hotels, capsule hotels, or sleeping pods within the terminal. The closest hotel is the Quality Hotel Real Aeropuerto, located about 3 km away and connected by a free shuttle. Other nearby hotels also offer shuttle services."
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Arnulfo Romero Airport?",
        "answer": "San Salvador Airport has a currency exchange office near the arrivals area, a chapel on the second floor of the terminal, and free Wi‑Fi available throughout the airport."
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Washington D.C. and San Salvador airports?",
        "answer": "At Washington Dulles (IAD), wheelchair assistance and accessible restrooms are available; request via your airline at least 48 hours before travel. A children’s play area is located near Gate B72. At San Salvador (SAL), mobility assistance can be arranged through your airline in advance; facilities include accessible restrooms and ramps. There is a small children’s play area in the departure lounge."
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Washington D.C. to San Salvador?",
        "answer": "Nonstop flights from Washington Dulles to San Salvador are most commonly operated with the Airbus A320-100 by Avianca and the Boeing 737 MAX 9 by United, while connecting itineraries often use Boeing 737-800s or Airbus A320-family aircraft on the longer leg through hubs like Houston, Miami, or Chicago. The exact aircraft can vary by day and airline, but on this route Wi-Fi and seatback entertainment are widely available.",
        "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 Washington D.C. to San Salvador?",
        "answer": "Star Alliance serves the Washington D.C. (IAD) to San Salvador (SAL) route nonstop through Avianca and United Airlines. Volaris El Salvador and Frontier also operate nonstop flights on this route but belong to no major global alliance. Other alliances like oneworld and SkyTeam may serve the route via connections, though no member carriers fly it nonstop.",
        "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 Washington D.C.?",
        "answer": "At Washington Dulles, the Turkish Airlines Lounge in Concourse B offers showers, hot food and a bar, accessible to business-class passengers and Priority Pass members. United Clubs in Concourses C and D serve domestic and international travellers with snacks and workspaces; entry requires a United Club membership, premium-cabin ticket or one-time pass. The Virgin Atlantic Clubhouse in Concourse A features a cocktail bar and à la carte dining for Upper Class passengers and Delta One flyers."
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Washington D.C. to San Salvador?",
        "answer": "Baggage policies vary by airline. Basic Economy often excludes a free checked bag, but standard international economy usually includes one checked bag and a carry-on. Premium fares offer higher allowances."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Washington D.C. to San Salvador?",
        "answer": "Flights from Washington D.C. to San Salvador typically offer Economy and may include flat-bed Business on select airlines, though Premium Economy is uncommon on this route."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies differ by airline and fare; flexible and premium cabin tickets often allow same‑day changes or standby, while Basic Economy typically does not."
      },
      "q24": {
        "question": "What are the cheapest days and times to fly from Washington D.C. to San Salvador?",
        "answer": "The cheapest day to fly from Washington D.C. (IAD) to San Salvador (SAL) is Tuesday, with an average fare of $897, while Thursday is the most expensive at $948. The cheapest time of day to depart is late night, with fares starting at $360, compared to midday departures which are the priciest at $591.",
        "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 Washington D.C. to San Salvador?",
        "answer": "A good price for a flight from Washington D.C. (IAD) to San Salvador (SAL) is anything under $616, which is considered a great deal; the typical fare is around $826, so anything below that is a solid value.",
        "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"
        ]
      }
    }
  }
}