{ "response": { "Key": "KEF-CHI", "orig": { "code": "KEF", "type": "airport", "city": "Reykjavík", "fullCity": "Reykjavík, Iceland", "airport": "Keflavik Intl Airport" }, "dest": { "code": "CHI", "type": "airport", "city": "Chicago", "fullCity": "Chicago, Illinois", "airport": "Dupage County" }, "faq": { "q0": { "question": "What is the typical flight duration from Reykjavík to Chicago?", "answer": "A nonstop flight from Reykjavík (KEF) to Chicago O'Hare (ORD) typically takes about 6 hours 30 minutes to 6 hours 45 minutes. With one stop, common layover cities like New York or Boston can extend total travel time to around 10 to 13 hours. The return flight from Chicago to Reykjavík is usually slightly shorter, around 6 hours." }, "q1": { "question": "Are there any direct flights from Reykjavík to Chicago?", "answer": "Yes, Icelandair and United both fly nonstop from Reykjavík (KEF) to Chicago O'Hare (ORD) daily. Icelandair operates up to three daily departures (about 20 flights a week) while United runs one daily flight. There is no nonstop service to Chicago Midway (MDW).", "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 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 Reykjavík to Chicago?", "answer": "Yes, visa requirements apply for travel from Reykjavík to Chicago depending on your nationality. If you are an Icelandic citizen, you can travel to the U.S. under the Visa Waiver Program for stays of 90 days or less, but you must obtain an approved ESTA authorization before departure. If you are a U.S. citizen, you do not need a visa to enter Iceland for short visits. Other nationalities should check U.S. and Icelandic entry rules based on their passport. For the return from Chicago to Reykjavík, the same rules apply in reverse: U.S. citizens can visit Iceland visa‑free for up to 90 days, while Icelandic citizens need ESTA for the U.S. leg." }, "q3": { "question": "What are the ground transportation options in Chicago?", "answer": "Flights from Reykjavík (KEF) typically arrive at O'Hare International Airport (ORD). From there, the Blue Line 'L' train is the fastest and most-used option, reaching downtown in about 45 minutes for $5. Taxis, ride-shares, and rental cars are also available, though road traffic can be heavy. The train is widely preferred for its reliability and low cost.", "toolsUsed": [], "references": [ { "url": "https://en.wikipedia.org/wiki/DuPage_Airport", "title": "DuPage Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-07-16T20:45:00Z" }, { "url": "https://en.wikipedia.org/wiki/Transportation_in_Chicago", "title": "Transportation in Chicago", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-05-15T02:56:07Z" }, { "url": "https://en.wikipedia.org/wiki/DuPage%20Airport", "title": "DuPage Airport", "time_published": "2026-03-13T22:38:40Z" }, { "url": "https://en.wikipedia.org/wiki/Transportation%20in%20Chicago", "title": "Transportation in Chicago", "time_published": "2026-04-13T06:59:09Z" }, { "url": "https://en.wikipedia.org/wiki/Chicago%20Executive%20Airport", "title": "Chicago Executive Airport", "time_published": "2026-03-26T11:15:20Z" } ] }, "q4": { "question": "When is the cheapest time to fly from Reykjavík to Chicago?", "answer": "The cheapest months to fly from Reykjavík to Chicago are October, September, and November, with average fares around $506–$547, while May, June, and February are the most expensive, averaging $889, $867, and $805 respectively.", "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 Reykjavík to Chicago?", "answer": "For Reykjavík to Chicago, the best fares are typically found when booking 11 to 14 weeks ahead, with an average price around $843. The single cheapest day to book is about 90 days before departure at $830, while last-minute tickets can cost over $1,200. For summer and holiday periods, booking even earlier — roughly 14 to 16 weeks out — can help secure better rates as prices tend to rise closer to departure.", "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 Reykjavík to Chicago?", "answer": "No overnight red-eye flights are available from Reykjavík (KEF) to Chicago — there are no nonstop red-eyes on this route, and no connecting itineraries with a red-eye long leg were found in the schedule.", "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 Reykjavík to Chicago?", "answer": "Icelandair and United Airlines operate nonstop flights from Reykjavík (KEF) to Chicago O'Hare (ORD). Icelandair runs up to 20 weekly flights with multiple daily departures, while United offers daily service. Typical per-carrier fares are not available for this route.", "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 Reykjavík and Chicago?", "answer": "Common layover cities include New York, Boston, Minneapolis, and Detroit. These hubs offer broad connections across the U.S., efficient transfer processes, and keep total travel time competitive." }, "q9": { "question": "How reliable are on‑time departures on this route from Reykjavík to Chicago?", "answer": "On‑time reliability is generally good, though winter weather can cause hiccups. Early flights with Icelandair tend to depart closer to schedule." }, "q10": { "question": "Which months have the best weather for traveling to Chicago?", "answer": "May to June and September to October offer pleasant temperatures and fewer tourists than summer." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Reykjavík to Chicago?", "answer": "Bring a passport valid for the duration of your stay, an ESTA authorization if eligible, proof of onward travel, a payment method for baggage and any required vaccination or insurance documents." }, "q12": { "question": "Which airport should I use in Chicago?", "answer": "Chicago has two main airports. O'Hare is the primary international gateway, located about 17 miles northwest of downtown, serving as a hub for United and American Airlines and offering extensive global connections. Midway is closer to the city center, around 10 miles southwest, and is dominated by Southwest Airlines, focusing on domestic and some near-international low-cost flights. Choose O'Hare for international arrivals and major airline alliances; choose Midway for budget domestic travel and quicker downtown access." }, "q13": { "question": "How do I get to Keflavik Intl Airport from the city center?", "answer": "From downtown Reykjavík, the most popular option is the Flybus airport shuttle, which connects from the central bus terminal and major hotels in about 45 minutes. Public city buses (Strætó) also serve the airport but take longer and are less convenient with luggage. Taxis and ride‑shares offer a direct, faster trip at a higher cost, while driving yourself takes roughly the same time and paid parking is available at the airport.", "toolsUsed": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Keflavík", "title": "Keflavík", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-05-21T05:54:11Z" }, { "url": "https://en.wikipedia.org/wiki/Keflav%C3%ADk%20International%20Airport", "title": "Keflavík International Airport", "time_published": "2026-04-24T20:36:26Z" }, { "url": "https://en.wikipedia.org/wiki/List_of_airports_in_Iceland", "title": "List of airports in Iceland", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-06-04T11:34:25Z" }, { "url": "https://en.wikipedia.org/wiki/City%20Airport%20Train", "title": "City Airport Train", "time_published": "2026-03-03T11:01:10Z" }, { "url": "https://en.wikipedia.org/wiki/File:BIKF_Layout.svg", "time_published": "2024-05-11T00:00:00Z" } ] }, "q17": { "question": "What aircraft are typically used on flights from Reykjavík to Chicago?", "answer": "On nonstop flights between Reykjavík (KEF) and Chicago, the two most common aircraft are the Boeing 737 MAX 9 (operated by Icelandair) and the Boeing 757-200 (operated by United). On one-stop itineraries the long-haul leg most often uses a Boeing 737 MAX 8, Boeing 757-200, or occasionally a Boeing 767-300, with connections through hubs like Toronto (YYZ), Denver, Newark, or Boston. The exact aircraft can vary by day and airline, but these Boeing types dominate the route; Wi‑Fi and seatback entertainment are widely available on these aircraft, though the specifics depend on the carrier and the particular aircraft assigned on the day.", "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 Reykjavík to Chicago?", "answer": "Two airlines fly nonstop from Reykjavík (KEF) to Chicago O'Hare: Icelandair (FI) and United Airlines (UA). Icelandair is not a member of any global alliance, while United belongs to Star Alliance. Other alliances may serve the route via connections, but the only nonstop carriers are Icelandair (unaffiliated) and United (Star Alliance).", "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 Reykjavík?", "answer": "At Keflavík International Airport, the main lounge is the Icelandair Saga Lounge, available to Saga Class passengers, Saga Gold and Silver members, and certain partner elite and business class travelers; it offers Icelandic-inspired refreshments and runway views. There is also a Priority Pass-eligible restaurant called Elda, where members receive a dining credit toward Icelandic dishes, but there is no standalone Priority Pass lounge. No other airline-branded lounges operate at KEF.", "toolsUsed": [], "references": [ { "url": "https://www.prioritypass.com/en-GB/lounges/iceland/keflavik-international", "title": "Keflavík International Airport KEF Lounges - KEF Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z" }, { "url": "https://my.prioritypass.com:443/en-GB/lounges/iceland/keflavik-international/kef1d-elda", "title": "ELDA KEF AIRPORT Reykjavik Keflavik International | Priority Pass", "time_published": "2024-11-05T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Keflavík", "title": "Keflavík", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-05-21T05:54:11Z" }, { "url": "https://en.wikipedia.org/wiki/Keflav%C3%ADk%20International%20Airport", "title": "Keflavík International Airport", "time_published": "2026-04-24T20:36:26Z" }, { "url": "https://www.lufthansa.com/lhg/lv/en/dest/cy/reykjavik", "title": "Flight to Reykjavík (KEF) | Lufthansa", "time_published": "2023-11-10T00:00:00Z" } ] }, "q21": { "question": "What is the baggage allowance on this route from Reykjavík to Chicago?", "answer": "Baggage rules depend on the airline and fare type. Basic economy tickets often exclude checked bags, while standard economy typically includes one checked bag and a carry‑on. Premium cabins offer more generous allowances." }, "q22": { "question": "What cabin and seat options are typical from Reykjavík to Chicago?", "answer": "Typical cabins include Economy and flat‑bed Business class; Premium Economy is less common on this route." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies vary by airline and fare class; flexible and premium cabin tickets generally allow same‑day changes or standby, while basic economy and restrictive fares do not." } } } }