Deal Alert: Nonstop Flights on Mainline Carriers to London From $381 Round-Trip

Update: Some offers mentioned below are no longer available. View the current offers here.

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Airfare deals are typically only available on limited dates. We recommend you use Google Flights to find dates to fly, then book through an online travel agency such as Orbitz or Expedia, which allows you to cancel flights without penalty by 11pm Eastern Time within one day of booking. However, if you're using The Platinum Card® from American Express, you'll need to book directly with the airline or through the Amex Travel portal to get 5x MR points. Remember: Fares may disappear quickly, so book right away and take advantage of Orbitz or Expedia's courtesy cancellation if you're unable to get the time away from work or family.

Flights to London from US cities are available from $381 round-trip on full-service carriers. You can fly from New York (JFK), Fort Lauderdale (FLL), Boston (BOS), Chicago (ORD), Las Vegas (LAS), Newark (EWR), Miami (MIA), San Francisco (SFO), Seattle (SEA), Washington D.C. (IAD) and Denver (DEN) to London (LHR or LGW) on full-service carriers like British Airways, Delta and Virgin Atlantic from January through May 2019.There's no limit of things to do in London — make sure you take advantage of your points and miles once you're there. If you're a food lover make sure to check out one of these 3 essential London restaurants — and don't skip out on tea!

If you're looking to do some exploring, check out Get Your Guide for a list of the best activities in London.

To search, head to Google Flights and enter your origin and destination cities. Scroll through the calendar function to find dates and prices that work for you. Finally, click through to book directly with the airline or through an OTA like Priceline or Expedia.

Airlines: British Airways, American Airlines, Virgin Atlantic, Delta, KLM
Routes: JFK/FLL/BOS/ORD/EWR/MIA/IAD/DEN/LAS/SFO/SEA to LGW/LHR
Cost: $381+ round-trip
Travel Dates: January 2019 to May 2019
Pay With: The Platinum Card® from American Express (5x on airfare booked directly with the airline), Citi Premier® Card, Chase Sapphire Reserve, American Express® Gold Card, Citi Prestige (5x on airfare plus trip delay insurance) or Chase Sapphire Preferred Card (2x on travel)

Here are a few examples of what you can book:

New York (JFK) to London (LHR/LGW) for $381 round-trip nonstop on British Airways:

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Fort Lauderdale (FLL) to London (LGW) for $381 round-trip nonstop on British Airways via Iberia.com:

Boston (BOS) to London (LHR) for $397 round-trip on Delta/KLM:

Las Vegas (LAS) to London (LHR) for $401 round-trip nonstop on British Airways:

Chicago (ORD) to London (LHR) for $403 round-trip nonstop on American Airlines/British Airways:

San Francisco (SFO) to London (LHR) for $413 round-trip nonstop on British Airways:

Newark (EWR) to London (LHR) for $423 round-trip nonstop on Virgin Atlantic via Delta.com:

Miami (MIA) to London (LGW) for $423 round-trip nonstop on American Airlines/British Airways:

Washington D.C. (IAD) to London (LHR) for $433 round-trip nonstop on British Airways:

Denver (DEN) to London (LHR) for $443 round-trip nonstop on British Airways via Iberia.com:

Maximize Your Purchase

Don't forget to use a credit card that earns additional points on airfare purchases, such as The Platinum Card® from American Express (5x on flights booked directly with airlines or American Express Travel), Chase Sapphire Reserve, American Express® Gold Card, Citi Premier, Citi Prestige (5x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.

H/T: Scott's Cheap Flights