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Cheap Flights from Baltimore Washington International to London Heathrow

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Compare Baltimore Washington International to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Baltimore Washington International to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Baltimore Washington International to London Heathrow? Find the lowest prices on one-way and return tickets right here.
London.445 € per passenger.Departing Fri, 17 Oct, returning Thu, 23 Oct.Return flight with Fly Play and British Airways.Outbound indirect flight with Fly Play, departs from Baltimore Washington International on Fri, 17 Oct, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Thu, 23 Oct, arriving in Baltimore Washington International.Price includes taxes and charges.From 445 €, select.
London.446 € per passenger.Departing Thu, 27 Nov, returning Sat, 6 Dec.Return flight with Fly Play and British Airways.Outbound indirect flight with Fly Play, departs from Baltimore Washington International on Thu, 27 Nov, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Sat, 6 Dec, arriving in Baltimore Washington International.Price includes taxes and charges.From 446 €, select.
London.464 € per passenger.Departing Tue, 21 Oct, returning Mon, 24 Nov.Return flight with Icelandair and British Airways.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Tue, 21 Oct, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Mon, 24 Nov, arriving in Baltimore Washington International.Price includes taxes and charges.From 464 €, select.
London.473 € per passenger.Departing Wed, 17 Sep, returning Tue, 23 Sep.Return flight with Fly Play and British Airways.Outbound indirect flight with Fly Play, departs from Baltimore Washington International on Wed, 17 Sep, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Tue, 23 Sep, arriving in Baltimore Washington International.Price includes taxes and charges.From 473 €, select.
London.477 € per passenger.Departing Wed, 17 Sep, returning Tue, 14 Oct.Return flight with Fly Play and British Airways.Outbound indirect flight with Fly Play, departs from Baltimore Washington International on Wed, 17 Sep, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Tue, 14 Oct, arriving in Baltimore Washington International.Price includes taxes and charges.From 477 €, select.
London.485 € per passenger.Departing Fri, 9 Jan, returning Fri, 23 Jan.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Fri, 9 Jan, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Fri, 23 Jan, arriving in Baltimore Washington International.Price includes taxes and charges.From 485 €, select.
London.486 € per passenger.Departing Tue, 18 Nov, returning Tue, 25 Nov.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Tue, 18 Nov, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Tue, 25 Nov, arriving in Baltimore Washington International.Price includes taxes and charges.From 486 €, select.
London.487 € per passenger.Departing Fri, 27 Feb, returning Sun, 8 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Fri, 27 Feb, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Sun, 8 Mar, arriving in Baltimore Washington International.Price includes taxes and charges.From 487 €, select.

Find the cheapest month to fly from Baltimore Washington International to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Baltimore Washington International to London Heathrow flights are currently cheapest in October.
Apr
from 550 €
May
from 496 €
Jun
from 594 €
Jul
from 568 €
Aug
from 499 €
Sep
from 473 €
Oct
from 445 €
Nov
from 486 €
Dec
from 487 €
Jan
from 485 €
Feb
from 487 €
Mar
from 575 €

Direct flights from Baltimore Washington International to London Heathrow

Baltimore Washington International to London Heathrow: Alternative routes

Compare routes from Baltimore Washington International to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Washington D.C. to London: Flight information

The things to know before you go.
Cheapest flight found445 €
Cheapest month to flyOctober
Average flight time7 hrs, 12 mins
Most popular airlineAer Lingus
Average flights per week39

Finding cheap flights from Baltimore Washington International to London Heathrow: Frequently asked questions

The best price we found for a return flight from Baltimore Washington International to London Heathrow is 445 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
7 hours and 12 minutes is the average flight time from Baltimore Washington International to London Heathrow.
Aer Lingus, American Airlines and Finnair fly direct from Baltimore Washington International to London Heathrow.
As of April 2025, there are 35 flights per week flying from Baltimore Washington International to London Heathrow.
The cheapest month to fly from Baltimore Washington International to London Heathrow is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Baltimore Washington International Airport to London Heathrow Airport on Friday, 17 October 2025.
Yes – the average flight time is 7 hours and 12 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Fly Play and Iberia offer the cheapest flight tickets to London Heathrow.

Flying from Baltimore/Wash International Thurgood Marshall Airport (BWI) to London Heathrow Airport (LHR): what you need to know

  • The average time for a direct flight from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport is 7 hours.

  • London's timezone is UTC+0, which makes London four hours ahead of Washington DC.

  • Flights from BWI to LHR start at 20:40 — the earliest with British Airways. The last service of the day is at 21:40 with British Airways. In total, you can choose from nine weekly Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport flights.

  • Give yourself enough time to make your BWI to LHR flight. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer queues during popular months like July. Arriving up to four hours in advance for an international flight and two hours for domestic departures is a smart move.

  • British Airways has direct flights from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport. Book with this popular carrier, then get ready to check out the sights in London — and maybe even more of United Kingdom if you have time.

  • The majority of travellers choose to travel with British Airways on this route.

  • The carrier with the most reliable on-time arrival rate for BWI to LHR flights is British Airways.

  • We make it simple to book a flight with a stopover. To see all your options for tickets from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to visit the city of your choice. Worthwhile stopovers between BWI and LHR include:

    • Logan International Airport

    • John F. Kennedy International Airport

    • Keflavik International Airport

How to find the cheapest flights from Baltimore/Wash International Thurgood Marshall Airport (BWI) to London Heathrow Airport (LHR)

  • 181 € is currently the lowest price for a one-way Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport flight. Return flights start at 445 €. These prices may change based on demand.

  • Book ten months before you want to fly. After crunching the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from BWI to LHR.

  • The cheapest month for flights from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport is September. Use the 'Whole month' tool to find the lowest airfares if you have flexible dates.

  • You don't need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment there's a new deal on cheap flights from BWI to LHR.

  • Discover the ideal flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and journey duration.

Handy information about Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • When it comes to the on-time performance of Baltimore/Wash International Thurgood Marshall Airport, data shows 77.13% of flights complete their journey on time.

  • Central Washington DC to Baltimore/Wash International Thurgood Marshall Airport is approximately 48 kilometres. Depending on traffic, it'll take you about 50 minutes to get there if you're catching a cab, ride-sharing or driving.

  • The journey when using public transport will take about 1 hour 30 minutes.

  • Taking an early flight from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport? Avoid the hassle of rushing to the airport (and sneak in some extra snooze time) by picking one of these hotels near BWI:

Arriving at London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • London Heathrow Airport to the centre of London has a drive time of about 55 minutes. It's approximately 31 kilometres away.

  • It typically takes 1 hour if you're travelling by public transport.

When to fly to London Heathrow Airport (LHR)

  • The quietest month for a flight from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport is February, while July is the busiest. Pick the best time to go to London based on whether you prefer a more fast-paced or easygoing experience.

  • When reserving your flight from Baltimore/Wash International Thurgood Marshall Airport to London Heathrow Airport, think about the type of weather you like. July is the warmest month in London, with the temperature ranging from 11ºC (52ºF) to 26ºC (79ºF).

  • January has average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Look for cheap tickets from BWI to LHR around that time if you want to travel in cooler conditions.

Explore more of United Kingdom

  • Birmingham is just one of the many places in United Kingdom waiting to be explored once you've taken in the sights of London. Around 161 kilometres away to the north-west, top sights here include Cadbury World, The Library of Birmingham and National Sea Life Centre.

  • Around 177 kilometres west of London, Bristol is another favourite stop in United Kingdom. Get a taste of what this destination has to offer at Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

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Plan the rest of your trip from Washington D.C. to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.