Open interactive map →Cheap flights from London to Belfast
Planning a trip from London to Belfast? Current fares start at €18 - a solid entry point for a flight to United Kingdom. Several airlines compete on this route, which helps keep fares relatively stable. The cheapest fare is non-stop, so no connection time to factor into your schedule. Use the price calendar to identify your cheapest month, then click through to compare live seat availability.
For the best prices on this route, aim to book at least 3-4 weeks in advance. Tuesday and Wednesday departures from London tend to be cheaper than Friday or Sunday flights. If €18 is above your budget, try adjusting to a shoulder-season month using the calendar above - fares can drop significantly outside peak periods.
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Cheapest month to fly
- October 2026€18DirectCheapest
Based on tracked fares, October is the cheapest month to fly this route at around €18.
Prices last updated: September 2026
Entry requirements for United Kingdom
EU passportVisa-free, 6 months
US passportVisa-free, 6 months
Requirements vary by nationality and change without notice. Check requirements for your nationality →
About Belfast
Northern Ireland's capital has transformed since the end of the Troubles into one of the UK's most dynamic short-break destinations, with the Titanic Belfast museum, a strong food scene, and Game of Thrones filming locations scattered across the region. Both Belfast International (BFS) and George Best Belfast City Airport (BHD) serve the city.
Alternative routes
Other ways to reach Belfast
Frequently asked questions
How much does a flight from London to Belfast cost?
The cheapest fare currently available from London to Belfast is €18. Prices on this route vary by season, day of week, and how far in advance you book. The month-by-month price calendar on this page shows exactly when fares are highest and lowest, so you can pick the most cost-effective window before searching for specific dates. Fares are refreshed regularly as our flight partners publish new availability.
Are there direct flights from London to Belfast?
Yes - non-stop flights are currently available from London to Belfast. The cheapest direct fare starts at €18, making it a convenient option if you want to avoid layover time. Direct flights are generally quicker and less stressful, especially for shorter trips to United Kingdom. Click through to the booking site to check live availability and schedules for your dates.
When is the cheapest time to fly from London to Belfast?
Prices on this route typically dip during shoulder-season months, away from school holidays and public holiday windows. Mid-week departures - particularly Tuesday to Thursday - tend to be cheaper than flights on Fridays and Sundays from London. The month-by-month price calendar above is the fastest way to identify the cheapest window - look for the months with the lowest fares before committing to travel dates. Booking 3-6 weeks in advance generally offers the best balance of price and seat availability on this route.