Cheap Flights from London to Hanoi — $322

The route London — Hanoi is served by many carriers — 10 in total, including Vietnam Airlines, LC Busre SAC, Wizz Air, China Southern Airlines, Ryanair, AirAsia X, Scandinavian Airlines, Jet2.com, Shenzhen Airlines, and China Eastern Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $322) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.

Heathrow (LHR) is London’s primary international hub, handling long-haul and premium carriers alongside many full-service European airlines. It sits about 25 km west of central London, with the Heathrow Express reaching Paddington in around 15–20 minutes and trains via the Elizabeth Line taking roughly 30–45 minutes; fares can range from mid to higher band for express services and lower for the Elizabeth Line. Underground, buses and taxis provide alternatives but can be slower during peak hours. Pros: comprehensive facilities and many nonstop routes; cons: can be busy, with longer transfer times and typically higher airport-related costs. Gatwick (LGW) functions as a major secondary international airport that mixes low-cost and network carriers, often used for leisure and short- to medium-haul flights. It lies approximately 45 km south of central London, and the Gatwick Express or Thameslink trains take about 30–35 minutes to reach Victoria or Blackfriars; journey times and fares vary by operator and advance purchase. Coach services and taxis provide door-to-door options but can be slower. Pros: good route coverage with competitive fares; cons: terminals are separate and can feel hectic during peak travel seasons. Stansted (STN) is primarily a budget and short-haul gateway, favoured by low-cost carriers serving Europe. Located roughly 55 km northeast of central London, the Stansted Express connects to Liverpool Street in around 45–50 minutes, while coaches to Victoria and elsewhere can take longer but may be cheaper. Taxi or rideshare trips are significantly longer and costlier. Pros: frequently lower ticket prices and point-to-point low-cost routes; cons: fewer amenities than larger hubs and longer transfer times to central London. Luton (LTN) operates largely as a budget-oriented airport with many low-cost European connections, typically offering competitive fares. It sits about 55 km northwest of central London; regular rail links require a shuttle bus from the terminal to Luton Parkway, followed by a train into central London in roughly 35–40 minutes total, while coaches run directly and can take 50–90 minutes depending on traffic. Pros: affordable flight options; cons: fewer on-site services and an extra shuttle step for rail journeys. London City (LCY) is a compact airport catering mainly to business travellers with short-haul and premium regional services; it’s the closest to the financial district, around 10 km east of central London. The DLR and local rail links reach Canary Wharf and Bank in about 15–25 minutes, and taxis or river transfers are quick and convenient. Pros: very short transfer times and good service for business routes; cons: smaller terminals with limited long-haul options and stricter aircraft size limits.

Noi Bai International Airport (HAN) is Hanoi’s main international gateway and typically acts as the country’s primary long-haul and regional hub, serving full-service carriers and several low-cost airlines. It sits about 25–35 km north of the city center, with road transfer times usually ranging from 30–60 minutes depending on traffic; airport buses and shuttle services can cost roughly $1–3, while taxis and ride-hailing rides are commonly $10–25. Trains are not currently direct options. Pros: relatively modern terminals, broad international connectivity and multiple ground-transport choices; cons: peak-hour road congestion can make transfers slower and low-cost carrier facilities may be more basic than premium lounges.