Cheap flight from London to Dehra Dun from €576

Frequently Asked Questions

• When is the best time to book flights from London to Dehra Dun?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Dehra Dun is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• When are flight tickets from London (LON) to Dehra Dun (DED) the cheapest?

  The cheapest months to fly from London to Dehra Dun is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from London to Dehra Dun on?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from London to Dehra Dun on October 28, 2025 with IndiGo, with prices starting at €629.

• Is there any time difference between London and Dehra Dun?

  The time difference between Dehra Dun and London is 5h.

• How do I change or cancel my ticket from London to Dehra Dun?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.