Flights from London to Belfast: How I Stopped Overpaying and Started Flying for Almost Nothing

I’ll be honest — the first time I booked a flight from London to Belfast, I paid way too much. Like, embarrassingly too much. I was new to the whole budget travel thing, typed “London to Belfast flights” into Google, clicked the first result, and handed over £89 without a second thought. It wasn’t until a colleague mentioned she’d just done the same route for £14 that I wanted to throw my laptop out the window.

That was about seven years ago. Since then, I’ve made this route probably a dozen times — sometimes for work, sometimes just because Belfast genuinely has some of the best food I’ve eaten anywhere in the British Isles — and I’ve got the whole thing down to a bit of an art. We’re talking £9 to £25 most of the time, occasionally a little more during peak season, but never that £89 disaster again.

So let me break down exactly how I do it, because cheap flights from London to Belfast are absolutely a thing, and you don’t need to be some kind of travel wizard to find them.

Why This Route Is Actually Great for Budget Flyers

The London-Belfast corridor is one of the most competitive short-haul routes in the UK, and that’s genuinely good news for your wallet. You’ve got multiple airlines fighting for the same passengers, multiple London airports serving the route, and two Belfast airports to choose from. Competition drives prices down, and this route has plenty of it.

Belfast is served by two airports — Belfast International (BFS) and George Best Belfast City Airport (BHD). Knowing which one works better for your plans can actually save you money and hassle. City Airport is closer to the city centre — about a 10-minute taxi or a quick £2.50 bus ride — while Belfast International is about 45 minutes out and you’re looking at £8-£10 on the shuttle bus. I’ve landed at both, and honestly, if the price difference between airports is more than about £15, it’s worth factoring in the extra transport cost before you get too excited about a bargain.

The Airlines Actually Worth Your Attention

Two names dominate this route: easyJet and Aer Lingus. Both operate from multiple London airports and both regularly have fares that’ll make you do a double-take.

EasyJet flies from London Gatwick, Luton, and Southend to Belfast International. Aer Lingus operates from Heathrow, Gatwick, and Manchester (okay, not London, but worth knowing). Flybe used to be a major player on this route before they folded — twice — and while they’ve been resurrected in some form, I’d check current schedules before banking on them.

My personal preference is easyJet from Gatwick simply because I find Gatwick easier to navigate than Heathrow and the fares are consistently competitive. But I never book without checking both airlines on the same day. Literally five minutes of comparison has saved me £30 more than once.

Cheap Flights from London to Belfast: When to Actually Book

Here’s where most people go wrong. They assume booking early always means booking cheap. Sometimes that’s true, but on a route this short and this competitive, the dynamics are a bit different.

For cheap flights from London to Belfast, I’ve had the most luck booking either six to eight weeks out or — if I’m feeling brave — within two weeks of travel. Airlines often drop prices close to departure to fill remaining seats. I’ve grabbed £9 fares this way. I’ve also been burned by waiting too long during school holidays and bank holiday weekends, so read the room on timing.

Tuesday and Wednesday departures are almost always cheaper than Friday afternoons and Sunday evenings. I learned this the hard way when I decided to fly home on a Sunday after a long weekend in Belfast and paid nearly triple what my outbound journey cost. The food scene in the Cathedral Quarter almost made up for it. Almost.

Set up fare alerts on Google Flights, Skyscanner, or both. Seriously, this is the laziest possible way to score a deal and it works. You put in the route, set an alert, and let the algorithm do the work while you get on with your life.

The Airport Choice That Could Change Everything

London has six airports that could technically serve this route depending on how generous your definition of “London” is. Heathrow and Gatwick are the main two, but Luton and Stansted are worth checking if you’re flexible — especially if you’re coming from north or east London where the tube connections to Luton are surprisingly painless.

The trick I use is searching “all London airports” on Skyscanner rather than a specific one. One time I found a £7 fare difference between Gatwick and Luton — but once I factored in the train from central London, Luton was actually £4 more expensive overall. So do the math properly before you get seduced by a low headline price.

Stansted serves Belfast less regularly, but when Ryanair occasionally throws Belfast routes into the mix, those fares can be genuinely shocking in the best possible way. I’m talking sub-£10 before fees. Keep an eye out.

Fees, Add-Ons, and the Budget Airline Trap

Right, let’s talk about the stuff airlines hope you won’t think about until you’re halfway through the booking process.

Budget airlines are great at one thing: advertising a fare that bears zero resemblance to what you’ll actually pay by checkout. Checked baggage, seat selection, and booking fees can double the price of a short-haul ticket faster than you’d believe. On a one-hour flight from London to Belfast, you genuinely do not need to check a bag. I’ve done this trip with a small backpack that fits under the seat in front and paid nothing extra. Pack light, travel carry-on only, and the cheap base fare stays cheap.

Seat selection is almost always optional on short flights. I know some people can’t handle not knowing where they’ll sit, but honestly, on a one-hour hop across the Irish Sea, the middle seat in row 23 will be fine. Skip the fee.

One card trick that’s actually worth it: some travel credit cards offer lounge access and don’t charge foreign transaction fees. For a domestic UK route like this one, the lounge access at Gatwick can be a genuinely lovely perk if your card includes it. I’m not saying go get a new card for a Belfast trip, but if you’re already thinking about a travel card, this kind of route is where it pays off.

What to Do If You Find a Particularly Ridiculous Fare

Sometimes you’ll stumble across a fare so cheap it feels like a mistake. It might not be a genuine mistake fare in the technical sense, but when I see anything under £12 including taxes on this route, I book first and figure out the logistics second. I’ve pulled together a Belfast weekend at 48 hours’ notice twice now and both times were brilliant. The city is compact enough that you don’t need to plan obsessively — you can book accommodation on Hostelworld or a budget hotel on Booking.com and figure out the rest when you land.

Belfast itself punches well above its weight for a budget city break. The food scene around St. Anne’s Square and the Cathedral Quarter will surprise you, the Titanic Museum (worth every penny of the entry fee) is genuinely world-class, and the black cab political tours are one of the most thought-provoking few hours you can spend anywhere. None of that requires you to have blown your budget on the flight to get there.

The Short Version, If You Just Want the Answer

If you’re looking for cheap flights from London to Belfast without wanting to read an entire manifesto about it — fair — here’s the condensed version: search easyJet and Aer Lingus directly, use Skyscanner with “all London airports” selected, aim for Tuesday or Wednesday departures, book six to eight weeks out or speculatively close to departure, and travel carry-on only.

That’s genuinely it. This route rewards a little flexibility and penalises last-minute panic booking during peak weekends. Get the basics right and you will not be paying more than £30 for a London to Belfast flight in most circumstances.

I wish someone had told me this before that £89 disaster. Learn from my expensive mistakes, book smart, and go eat a proper Ulster fry when you land. You’ve earned it.

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