Cheap flights from Pittsburgh to London from $252

The cheapest month to fly to London from Pittsburgh is in October. Flight prices, which tend to average around $31, 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 Pittsburgh averaging around $31.

The cheapest day to depart from Pittsburgh to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $883. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,173. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Fly from Pittsburgh to London Heathrow for the best Pittsburgh - London flight prices

You are more likely to see cheaper flights to London from Pittsburgh when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $940 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Pittsburgh for as low as $747 on momondo.

There are 3 cabin classes available to choose from on Pittsburgh 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 44% on your flight if you consider stops on a Pittsburgh to London flight.

Icelandair, British Airways, and United Airlines are the most popular carriers operating from Pittsburgh to London

British Airways, American Airlines and JetBlue are the top three most popular airlines that fly to London from Pittsburgh according to our data. British Airways is the first choice among our users, with 67% of people opting to fly with this airline when traveling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Boston (BOS) was the most common stop: 28% of momondo users choosing 1-stop flights on this route connected there.

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $490.

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 9h 30m.

New York (JFK) has the shortest average layover time for this route: 1h 23m.

As of July 2026, there are 5 flights per day flying from Pittsburgh to London. The most common time of day flights depart is 9:00PM, with 100% of flights taking off in the evening.

As of July 2026, 37 flights take off from Pittsburgh and land in London each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.