Cheap flights from London to Belfast

October comes out cheapest on this route, and it lands in the quieter stretch after the summer rush, so fares ease off before the Christmas build-up. November and January are usually calm too, while the weeks around school holidays and the run-up to Christmas fill up early and cost more. Weekdays, especially midweek, tend to be cheaper than Friday evenings and Sunday returns, which is when weekend visitors travel between London and Belfast. If your dates are flexible, compare the price calendar month by month and book a few weeks ahead rather than chasing a single day.

The route is covered by a mix of low-cost and full-service carriers. Ryanair UK, Ryanair, Easyjet and Jet2 work on the low-cost model, so extras are priced separately — check what your fare includes before you add a checked bag or a seat. British Airways and BA CityFlyer fly from London alongside Aer Lingus, while Air France and KLM Cityhopper show up on connecting itineraries through their hubs. Direct flights are the norm between London and Belfast, so if you see a connection it is usually a deliberate choice for a lower fare or a specific departure time. Full-service tickets usually come with more included, but on a short hop the practical difference is baggage and flexibility.

George Best City is the airport you land at, and it is the only one serving Belfast on this route, so there is no second airport to choose between when you arrive. Work out your onward travel before you land — a bus or a taxi into the centre is the usual choice, and a hire car makes sense if you are heading beyond the city. Smaller airports can be quiet outside peak departures, so check your airline's bag drop and security opening times for the return leg, and do not cut it fine if you are on an early flight.

Currency

GBP (£)

Power sockets

Type G · 230 V

Language

English

Emergency number

112, 999

Calling code

+44

Internet domain

.uk

Population of Belfast

345 k (2021)

Time zone

UTC+00 (Europe/London)

Country facts: Wikidata

• London has several airports, so confirm which one your fare leaves from before you book a train across town.
• Check what your low-cost fare includes, since cabin bag size and checked baggage are usually priced separately.
• Check what identification your airline accepts for a domestic flight within the United Kingdom, as rules differ between carriers.
• If you build a connection on separate tickets, a delay on the first leg is your problem rather than the airline's.
• October is the cheapest month, so weigh it against the weeks you actually want before you commit.
• Belfast has one airport, George Best City, so make sure your return lands at the same place you flew out of.