Cheap Flights London to Barcelona from £707

Flight FAQs

• Which airlines offer the cheapest flights from London to Barcelona?

  Based on Trip.com data, avianca offers Cheapest nonstop one-way flights from £707 (for example, LHR–BLA on Thu, Sep 17). For a Cheapest nonstop return flight, avianca offers fares from £1,157, departing on Thu, Oct 1 and returning on Mon, Oct 5.

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

  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 Barcelona 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.

• How can I find the best deals on flights from London to Barcelona?

  Here are some tips for finding the best flight deals from London to Barcelona on Trip.com:
  · Be flexible with your travel dates. The cheapest flight is currently on Thu, Sep 17, with one-way fares from just £707.
  · Compare airlines. avianca currently offers the lowest fares on this route.
  · Set up a price alert to track fare changes without searching every day.
  · Check Trip.com regularly for flight deals and available promo codes.
  · Avoid peak season or book early. April is generally the busiest month for travel to Barcelona.
  · Get exclusive promo codes on the Trip.com app.

• When is the best time to book a flight from London to Barcelona to get the best price?

  The cheapest month to book a flight from London to Barcelona is usually March, when demand is lower.

• Which upcoming date is the cheapest for flights from London to Barcelona?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from London to Barcelona on September 20, 2026 with avianca, with prices starting at £1,097.

• What is the time difference between London and Barcelona?

  The time difference between Barcelona and London is 4h.

• How can I change or cancel my flight ticket from London to Barcelona?

  Tickets can only be changed or cancelled 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.

• What is the average price of a one-way flight from London to Barcelona?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from London to Barcelona is £1,000. Fares vary by travel date, airline and availability.

• How do I book flights from London to Barcelona on Trip.com?

  Enter London and Barcelona, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.