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Cheap Flights to London

World-class museums, historic landmarks & vibrant culture — with unbeatable transatlantic fares

Flight Deals to London

London is the most popular transatlantic destination and benefits from fierce airline competition, making it one of the cheapest European cities to fly to from the US. With six airports and dozens of carriers competing for passengers, deals appear constantly — especially from East Coast cities where fares regularly drop below $400 roundtrip.

Best Time to Fly to London

January through March offers the cheapest fares. October-November is also good value with pleasant autumn weather.

This Week's Picks

See What You're Missing

Real deals from this week - subscribers get these and more, every Friday.

71% off San Francisco → Cancun ($391)$391
🇺🇸From San Francisco

71% off San Francisco → Cancun ($391)

Nonstop SFO to Cancun at 71% below typical, plus $137 Seattle and $179 Vancouver fares to grab before Thanksgiving.

Nov 6
Los Angeles to Rome for $707?$707
🇺🇸From Los Angeles

Los Angeles to Rome for $707?

LAX → Rome is 67% below typical, plus Tokyo from $741 (66% below typical) and Seattle for just $158.

Nov 6
76% off US Cities → Dallas ($38)$38

76% off US Cities → Dallas ($38)

Las Vegas to Dallas at $38 round-trip is 76% below typical, plus Denver to LA for $46 and Seattle to Cancun for $567 (63% below typical).

Nov 6
48% off New York → Madrid ($554)$554
🇺🇸From New York

48% off New York → Madrid ($554)

JFK to Madrid is 48% below typical at $554 round-trip, plus Nassau and Aruba beach escapes from $310 to beat the winter chill.

Nov 6
74% off Washington DC → San Juan ($183)$183
🇺🇸From Washington DC

74% off Washington DC → San Juan ($183)

BWI to San Juan is $183 round-trip, 74% below typical, plus a $209 DCA → Miami fare and $678 Dulles → Lisbon to chase.

Nov 6
74% off Boston → Madrid ($495)$495
🇺🇸From Boston

74% off Boston → Madrid ($495)

Madrid is 74% below typical at $495 round-trip, plus Punta Cana at 70% off and a Cancun escape for just $351.

Nov 6

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Tips for Finding Cheap Flights to London

Fly to London From

🇺🇸New York→🇺🇸Boston→🇺🇸Philadelphia→🇺🇸Chicago→🇺🇸Washington DC→🇺🇸Miami→🇺🇸Los Angeles→🇺🇸San Francisco→🇺🇸Atlanta→

Other Popular Destinations

🇯🇵Flights to Tokyo→🇮🇹Flights to Rome→🇪🇸Flights to Barcelona→🇮🇪Flights to Dublin→🇳🇱Flights to Amsterdam→🎰Flights to Las Vegas→

Frequently Asked Questions

What is the cheapest flight to London?

Roundtrip flights from the US East Coast regularly drop to $300-400 during sales. From NYC, fares under $350 appear several times per year on carriers like Norse Atlantic, JetBlue, and TAP.

Which London airport should I fly into?

Heathrow (LHR) has the best transport links and most full-service flights. Gatwick is good for budget carriers. Stansted and Luton are cheaper but further from central London.

How far in advance should I book?

For the best London fares, book 2-4 months ahead for economy. However, last-minute sales and error fares can offer even better prices — subscribe to get alerted.

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