Amazing Deal Alert: US to London From $276 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 that 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 American Express Platinum Card, you'll need to book directly with the airline or through 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.

Norwegian is offering very low fares from Boston (BOS), Los Angeles (LAX), New York (JFK) and Oakland (OAK) to London (LGW) starting from just $276 round-trip. Flights are available for departures from January through March 2017 with limited availability, so book now before these prices disappear. Norwegian is a low-cost carrier and will charge you for extras like seat selection and large carry-ons. However, even with these extra fees, the total cost still allows plenty of room for saving. Norwegian flies its 787 Dreamliner on these routes, which has received solid reviews from TPG staff.

Don't forget that you can find even cheaper fares by completing your booking on the Norwegian version of the website (select "Norway" as your country when you go to Norwegian.com). Prices will be displayed in the Norwegian Krone, but it'll save you some cash — the Boston to London flight costs $305 on the English version of the site, but only $276 (2,354 NOK) on the Norwegian version.

Airline: Norwegian
Route: BOS, JFK, LAX and OAK to LGW
Cost: $276+ round-trip in economy
Dates: January - March 2017
Booking Link: Norwegian.com
Pay With: The Platinum Card from American Express (5x on airfare), Chase Sapphire Reserve, Premier Rewards Gold Card from American Express, Citi Prestige (3x on airfare) or Chase Sapphire Preferred (2x on travel)

Here are a few examples of what you can book:

Boston (BOS) to London (LGW) for $276 round-trip in February:

Oakland (OAK) to London (LGW) for $317 round-trip in January:

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Los Angeles (LAX) to London (LGW) for $338 round-trip in January:

New York (JFK) to London (LGW) for $362 round-trip in March:

Maximize Your Purchase

Don't forget to use a credit card that earns additional points on airfare purchases, such as the American Express Platinum Card (5x on flights booked directly with airlines or American Express Travel), Chase Sapphire Reserve, American Express Premier Rewards Gold or Citi Prestige (3x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.

If you're able to score one of these tickets, please share the good news in the comments below!