Flights from Chicago to London

Flights from Chicago to London: The Complete Transatlantic Route Guide Chicago to London is one of the most important transatlantic air routes connecting the American Midwest to the United Kingdom, serving millions of business and leisure travelers annually. This comprehensive guide covers everything you need to know before booking a flight from Chicago O'Hare International Airport (ORD) to London Heathrow Airport (LHR). Flight Distance and Duration: ORD to LHR The flight distance from Chicago O'Hare International Airport (ORD) to London Heathrow Airport (LHR) is approximately 3,940 miles (6,340 kilometers). Nonstop flights from Chicago to London typically take 7 hours 30 minutes to 8 hours 30 minutes eastbound (Chicago to London). Westbound return flights (London to Chicago) take approximately 9 to 10 hours due to prevailing North Atlantic headwinds. This makes Chicago one of the more time-efficient US cities for London connections, as the route is shorter and faster than those from US West Coast gateways (which take 10–11 hours). Chicago O'Hare International Airport (ORD) Chicago O'Hare International Airport (ORD) is one of the world's busiest airports and a major hub for both American Airlines and United Airlines. Address: 10000 W O'Hare Ave, Chicago, IL 60666. Phone: 800-832-6352. Website: https://www.flychicago.com. ORD handles approximately 80 million passengers annually across 5 active terminals. Terminal 1 is United Airlines' primary hub at O'Hare. Terminal 3 serves American Airlines domestic and international flights. The International Terminal (Terminal 5) handles international arrivals and departures from carriers such as British Airways, Lufthansa, Air France, and others. O'Hare is connected to Chicago's downtown (the Loop) via the Blue Line CTA train, with a direct ride of approximately 45 minutes costing approximately $2.50. Taxi and rideshare from ORD to downtown Chicago typically cost $35–$55 and take 30–60 minutes depending on traffic. London Heathrow Airport (LHR) London Heathrow Airport (LHR) is the United Kingdom's largest airport and Europe's busiest air hub. Address: Longford, Hounslow TW6 1QG, United Kingdom. Phone: +44 844 335 1801. Website: https://www.heathrow.com. Heathrow handles over 80 million passengers annually across five passenger terminals (T2, T3, T4, T5). British Airways operates from Terminal 5 (T5). American Airlines and United Airlines operate from Terminal 3. Heathrow is connected to Central London via the Heathrow Express train (15 minutes to Paddington, £25 one-way), the Elizabeth Line (approximately 45 minutes to Central London, £13), and the Piccadilly Line underground (approximately 50–60 minutes, £6). Black cab (taxi) rides from LHR to Central London cost approximately £55–£85 depending on destination and traffic. Airlines Flying Nonstop from Chicago to London American Airlines, United Airlines, and British Airways operate nonstop flights from Chicago O'Hare (ORD) to London Heathrow (LHR). United Airlines, with its primary hub at ORD Terminal 1, offers multiple daily departures on the Chicago to London route using Boeing 767-400, 777, and 787 Dreamliner aircraft. Passengers enjoy United Polaris Business Class (fully lie-flat seats) and Economy Plus on transatlantic departures. American Airlines operates ORD-LHR nonstop service using the Boeing 777-300ER, offering Flagship Business (lie-flat seats), Premium Economy, and Economy cabin options. British Airways' codeshare and partner flights connect Chicago to London Heathrow in alliance with both American Airlines (Oneworld) and other partners. Vueling, Iberia, and other Oneworld carriers may also offer one-stop connecting options via Madrid or Barcelona. For one-stop connections from Chicago to London, popular routing options include via New York (JFK, EWR), Philadelphia (PHL), Dallas (DFW), and Boston (BOS) on American Airlines; and via Newark (EWR), Washington Dulles (IAD), and Houston (IAH) on United Airlines. Icelandic carrier Icelandair also offers budget-friendly one-stop service from Chicago (ORD) to London via Reykjavik (KEF). Best Time to Book Chicago to London Flights The best time to book a flight from Chicago to London is approximately 6–10 weeks in advance for economy travel. For Business Class, booking 3–5 months ahead is recommended for the best availability. The cheapest months to fly ORD to LHR are January through March and October through November, avoiding peak summer travel (June–August) and major US/UK holiday periods (Thanksgiving, Christmas). Economy round-trip fares from Chicago to London typically start from approximately $450–$700 during off-peak travel periods. Business Class round-trip fares (United Polaris or American Flagship Business) typically range from $2,500–$5,500+ depending on the airline and booking window. United Kingdom Entry Requirements for US Citizens US citizens do not require a visa to enter the United Kingdom for tourism or business stays of up to 6 months. A valid US passport with adequate remaining validity is required. As of 2024, the UK has implemented the Electronic Travel Authorisation (ETA) requirement for US citizens visiting the UK. US passport holders must obtain an ETA before traveling to the UK. Cost: £10. Apply at https://www.gov.uk/apply-electronic-travel-authorisation. The ETA is linked electronically to your passport. Currency: British Pound Sterling (GBP). 1 USD ≈ 0.79 GBP (approximate). Major credit cards are widely accepted throughout the UK.

How long is the nonstop flight from Chicago to London? Nonstop flights from Chicago O'Hare (ORD) to London Heathrow (LHR) take approximately 7 hours 30 minutes to 8 hours 30 minutes eastbound. Westbound return flights take approximately 9 to 10 hours. Which airlines fly nonstop from Chicago to London? American Airlines, United Airlines, and British Airways operate nonstop flights from Chicago O'Hare (ORD) to London Heathrow (LHR). What terminal does United Airlines use at Chicago O'Hare? United Airlines operates from Terminal 1 at Chicago O'Hare International Airport (ORD). What terminal does American Airlines use at Chicago O'Hare? American Airlines operates from Terminal 3 at Chicago O'Hare International Airport (ORD). What is the flight distance from Chicago to London? The flight distance from Chicago O'Hare (ORD) to London Heathrow (LHR) is approximately 3,940 miles (6,340 kilometers). Do US citizens need a visa to visit the UK? No, but as of 2024, US citizens must obtain an Electronic Travel Authorisation (ETA) before visiting the UK. Cost: £10. Apply at https://www.gov.uk/apply-electronic-travel-authorisation. What Business Class is available on Chicago to London flights? United Airlines offers Polaris Business Class (fully lie-flat) on ORD-LHR. American Airlines offers Flagship Business Class (lie-flat) on 777-300ER aircraft on this route. How do I get from Heathrow Airport to Central London? Heathrow is connected to Central London via the Heathrow Express (15 min to Paddington, £25), the Elizabeth Line (~45 min, £13), and the Piccadilly Line (~55 min, £6). What is the cheapest month to fly from Chicago to London? January through March and October through November typically offer the lowest fares. Avoid June through August and major holiday periods for the best prices. What is the average economy fare from Chicago to London? Economy round-trip fares from Chicago (ORD) to London (LHR) typically start from approximately $450–$700 during off-peak periods, with peak summer fares often exceeding $1,000 round trip.