Cheap Flights to London: Complete 2026 Booking Guide

London is the cheapest European destination to reach from the US. With budget airlines like Norse Atlantic offering $199 one-way fares and JetBlue providing free Wi-Fi and checked bags, flying to London has never been more affordable. This guide covers everything you need to book cheap flights to London in 2026.

Quick Facts: Flying to London from the US

• Flight time: 7 hours from New York; 10 to 11 hours from Los Angeles
• Cheapest US departure cities: New York (JFK), Boston (BOS), Newark (EWR)
• Cheapest arrival airports: London Heathrow (LHR) and London Gatwick (LGW); Stansted (STN) for budget airlines
• Round-trip price range: $280 to $580 depending on season
• Visa required? No, for US citizens visiting up to 6 months
• Best booking window: 8 to 12 weeks before departure

Search Cheap Flights to London Now

Use the search widget below to find the cheapest flights to London from your departure airport.

Cheapest US-to-London Flight Routes

• New York (JFK) to London (LHR): $280 to $480 round trip. Norse Atlantic, JetBlue, British Airways, Delta, United. 7 hours direct.
• Boston (BOS) to London (LHR): $280 to $450 round trip via Reykjavik (Icelandair) or direct (JetBlue, British Airways). 6.5 hours direct.
• Newark (EWR) to London (LHR): $300 to $480 round trip. United, British Airways. Often $50 cheaper than JFK.
• Los Angeles (LAX) to London (LHR): $380 to $580 round trip. Norse Atlantic, JetBlue, British Airways, Virgin Atlantic. 10.5 hours direct.
• Chicago (ORD) to London (LHR): $380 to $580 round trip. United, British Airways, American. 8 hours direct.
• Miami (MIA) to London (LHR): $380 to $550 round trip. British Airways, American, Virgin Atlantic. 8.5 hours direct.

Best Airlines for London Flights

Norse Atlantic (Cheapest)

Norwegian budget airline with fares from $199 one-way. Bare-bones: no free food, no free checked bags, no entertainment screens. But modern Boeing 787s and reliable. Bring your own food and entertainment. Routes: JFK-LHR, LAX-LHR, MIA-LGW.

JetBlue (Best Value)

Best budget option with free Wi-Fi, free checked bag, and Mint business class. The only US budget carrier with lie-flat beds on transatlantic routes. Routes: JFK-LHR, BOS-LHR, JFK-LGW.

British Airways (Most Routes)

Most daily flights from US cities to London. Full service with meals and drinks. Slightly higher fares but more departure times. Part of the Oneworld alliance (earn AA miles).

Icelandair (Best for Stopover)

One stop via Reykjavik. Free Iceland stopover (up to 7 days). Good for Boston and NYC departures. Full service but tighter seats than competitors.

When Is the Cheapest Time to Fly to London?

• Cheapest (Off-Season): January to March. 30 to 50 percent cheaper than summer. Cold, gray, short days. But museums are empty, hotels are half price, and pubs are cozy.
• Shoulder Season: April to May and October to November. 15 to 25 percent cheaper than summer. Mild weather, fewer crowds.
• Peak Season: June to September. Most expensive. Long days, mild weather, peak tourist crowds.
• Most Expensive: December 20 to January 5 (holidays) and late May (UK half-term school break).

How to Book the Cheapest London Flight

• Book 8 to 12 weeks ahead. The sweet spot for transatlantic flights.
• Check Norse Atlantic first. Their fares are often 30 to 50 percent below major carriers.
• Compare JFK vs. Newark. EWR is often $50 cheaper for the same London destination.
• Consider Gatwick (LGW) instead of Heathrow (LHR). Gatwick is further from central London but cheaper flights and faster immigration.
• Book through Tsafir. No booking fees.

Arrival Airports in London

Heathrow (LHR)

The main international airport. 30 minutes from central London via Elizabeth Line ($15) or 45 minutes via Tube ($8). Most US airlines arrive here. Immigration can take 30 to 60 minutes.

Gatwick (LGW)

Second largest airport. 30 minutes from central London via Gatwick Express ($25) or 45 minutes via Thameslink ($15). Often cheaper flights than Heathrow. Faster immigration.

Stansted (STN)

Budget airline airport (Ryanair, easyJet). 45 minutes from central London via Stansted Express ($20). Only relevant if connecting to European budget flights.

UK Visa Requirements for US Citizens

US citizens do not need a visa for the UK for tourism visits up to 6 months. You need:

• A passport valid for the duration of your stay
• A return ticket (may be checked)
• Proof of sufficient funds (rarely checked)

At UK immigration, you may be asked about the purpose of your visit, where you are staying, and how long you plan to stay. Answer clearly and concisely. Unlike the US, UK immigration officers are generally polite and efficient.

What to Pack for London

• Layers: London weather changes 3 times per day. Pack a light jacket, a sweater, and a t-shirt. Even in summer, evenings are cool (12 to 15 degrees).
• Rain jacket or umbrella: It rains in London, but usually lightly. A compact umbrella is essential.
• Comfortable walking shoes: London is a walking city. You will walk 15,000+ steps per day.
• Power adapter: UK uses Type G plugs (3 rectangular pins). 230V. Different from continental Europe.
• Oyster Card or contactless card: For the Tube (subway). Tap your contactless credit card or phone on the reader. No need to buy a special card.

Sample London Itinerary (Brief)

For a complete day-by-day plan with costs, see our 5-Day London Itinerary Guide. Here is the brief version:

• Days 1-2: Classic London — Tower of London, Tower Bridge, British Museum, Big Ben, Westminster Abbey
• Days 3-4: Culture and Markets — Camden Market, Borough Market, Tate Modern, London Eye, South Bank walk
• Day 5: Day Trip — Windsor Castle, Oxford, or Stonehenge

FAQ — Cheap Flights to London