Cheap flights from Baltimore to London from $243

The cheapest month to fly to London from Baltimore is in January. Flight prices, which tend to average around $635, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Baltimore averaging around $658.

The cheapest day to depart from Baltimore to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $762. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $888. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Baltimore in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $808 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $831. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Baltimore/Washington to London Heathrow for the best Baltimore/Washington - London flight prices

You are more likely to see cheaper flights to London from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $774 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Baltimore for as low as $713 on momondo.

There are 3 cabin classes available to choose from on Baltimore/Washington to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 27% on your flight if you consider stops on a Baltimore to London flight.

As of April 2026, prices for Baltimore to London flights are approximately 60% more expensive when compared to flights at the same time last year.

British Airways, Delta, and United Airlines are the most popular carriers operating from Baltimore/Washington to London

British Airways, United Airlines and American Airlines are the top three most popular airlines that fly to London from Baltimore according to our data. British Airways is the first choice among our users, with 55% of people opting to fly with this airline when traveling to London. Keep in mind that there are 19 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Reykjavik (KEF) was the most common stop: 88% of momondo users choosing 1-stop flights on this route connected there.

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $428.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 15m.

Reykjavik (KEF) has the shortest average layover time for this route: 1h 25m.

4 flights are operational daily from Baltimore to London as of April 2026. The most popular departure time for this route is 9:00PM, with 100% of flights per day taking off in the evening.

The number of flights available between Baltimore and London is 33 per week as of April 2026. The most frequent departure day is Wed, with 24% of weekly flights leaving on this day.