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Facts About Flying from IAD to LHR

  • 5% of IAD to LHR travelers booked First or Business Class.
  • 6%IAD Airport to LHR Airport traveled with their kids under 14.
  • 30% of IAD to LHR travelers were millenials.
  • 49% of IAD to LHR travelers were female.
  • 20% of IAD to LHR travelers were over the age of 60.
  • The last flight from IAD to LHR departs at 11:00PM - 12:00AM.
  • January is the high season to travel from IAD to LHR.
  • October is the low season to travel from Dulles to London Heathrow.
  • There are 3 daily flights from Dulles to London Heathrow.
  • Travelers spent an average of 4 days in London Heathrow.
  • There are 94 direct flights from Dulles to London Heathrow.
‡ All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 12 months' data.

Book Cheap Flights from IAD to LHR

Looking for IAD to LHR flights? Book your flight tickets with CheapOair and be sure that you get the lowest airfare. Along with saving big on flight bookings, you can also select from a broad list of airlines flying on the route. In addition, if you have to catch flight immediately due to any emergency, you can also grab deals and discounts on last minute flights from Dulles to LHR. So why to wait? Avail incredible flight deals with CheapOair and save like never before. Book your airline tickets now!

How to get cheap flights from IAD to LHR
  • Book your flights well in advance (at least a month in advance) to get cheapest Dulles to London Heathrow flight deals.
  • Prefer traveling on weekdays as airfare tends to rise on weekends.
  • Try flying before or after any holiday to avoid heavy traffic.
  • Be flexible with the travel dates.
  • Use CheapOair coupons and promo codes at checkout to get discounts on IAD to LHR flight tickets.
  • Book early morning flights to get great discounts on IAD to LHR airline tickets.

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