BFS - LON

£17 Find Cheap Flights from Belfast Intl Airport to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to London departing on 18/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to London, as well as popular online travel agencies
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£35
Overall average: £56
easyJet
Mon 16/3Sat 21/3
BFS - LTN • Direct
Cheapest one-way flight
£17
Typical prices: £29-£81
easyJet
Wed 18/3
BFS - STN • Direct
Video guide: How to find cheap flights to London
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Top airlines
easyJet
Cheapest • from £35 (return)
Ryanair
Best reviews • 6.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
BFS
-
STN
Cheapest • 21% average savings
BFS
-
STN
Most popular
Insights
Insights
Insights
Insights
When to book
5 weeks
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 30% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Belfast Intl to London (BFS-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast Intl to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Belfast Intl to London

Mon, 16 Mar - Sat, 21 Mar
easyJet Logo
21:00 - 22:10
BFS
-
LTN
1h 10mdirect
easyJet Logo
07:00 - 08:20
LTN
-
BFS
1h 20mdirect
£35easyJet
Fri, 27 Feb - Sat, 28 Feb
Ryanair Logo
14:30 - 15:50
BFS
-
STN
1h 20mdirect
Ryanair Logo
10:35 - 11:55
STN
-
BFS
1h 20mdirect
£35Ryanair
Sun, 8 Mar - Sun, 15 Mar
easyJet Logo
08:55 - 10:05
BFS
-
LTN
1h 10mdirect
easyJet Logo
07:05 - 08:25
LTN
-
BFS
1h 20mdirect
£36easyJet
Tue, 31 Mar - Sun, 5 Apr
Ryanair Logo
09:15 - 10:35
BFS
-
STN
1h 20mdirect
Ryanair Logo
10:35 - 11:55
STN
-
BFS
1h 20mdirect
£36Ryanair
Thu, 26 Feb - Sat, 28 Feb
easyJet Logo
21:00 - 22:10
BFS
-
LTN
1h 10mdirect
easyJet Logo
07:00 - 08:20
LTN
-
BFS
1h 20mdirect
£37easyJet
Fri, 17 Apr - Sun, 19 Apr
Ryanair Logo
19:55 - 21:15
BFS
-
STN
1h 20mdirect
Ryanair Logo
10:35 - 11:55
STN
-
BFS
1h 20mdirect
£37Ryanair
Fri, 27 Feb - Mon, 2 Mar
easyJet Logo
21:05 - 22:15
BFS
-
LTN
1h 10mdirect
easyJet Logo
08:20 - 09:40
LTN
-
BFS
1h 20mdirect
£37easyJet
Sat, 28 Mar - Sat, 4 Apr
Ryanair Logo
23:10 - 00:30
BFS
-
STN
1h 20mdirect
Ryanair Logo
09:25 - 10:45
STN
-
BFS
1h 20mdirect
£37Ryanair
Fri, 27 Feb - Mon, 2 Mar
easyJet Logo
21:05 - 22:15
BFS
-
LTN
1h 10mdirect
easyJet Logo
08:20 - 09:40
LTN
-
BFS
1h 20mdirect
£38easyJet
Wed, 11 Mar - Fri, 13 Mar
Multiple Airlines Logo
12:00 - 23:05
BFS
-
SEN
11h 05m
1 stop
Multiple Airlines Logo
07:35 - 20:25
SEN
-
BFS
12h 50m
2 stops
£144Multiple Airlines
Booking Insights

KAYAK's insights & trends for Belfast Intl to London flights

Get data-powered insights and trends into flights from Belfast Intl to London to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to London
Find cheap flights to London

Planning a trip from Belfast Intl to London? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

How much is a return flight from Belfast Intl Airport to London?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Belfast Intl Airport to London departing in March.

What is the cheapest Belfast Intl Airport to London flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Belfast Intl Airport to London costs £24 on the route between Belfast Intl Airport (BFS) and London Stansted Airport (STN). Over the past month, this route was, on average, 21% cheaper than other Belfast Intl Airport-London routes. It is also the most popular route.

What’s the cheapest day of the week to fly from Belfast Intl Airport to London?

The average price of all round-trip flights from Belfast Intl Airport to London clicked on KAYAK for each day over the last 12 months.

When flying from Belfast Intl Airport to London, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to Belfast Intl Airport, you’ll find the best rates on Mondays and the most expensive ones on Sundays.

What is the cheapest month to fly from Belfast Intl Airport to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast Intl Airport to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Belfast Intl Airport to London is March, where tickets cost £48 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £100 and £95 respectively.

How far in advance should I book a flight from Belfast Intl Airport to London?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Belfast Intl Airport to London, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Belfast Intl Airport to London, you should book around 5 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know - Cheap tickets from Belfast Intl Airport to London

Low seasonJanuary
Cheapest flight£17
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (42% more expensive on average)
Flight from Belfast Intl Airport to London Stansted Airport

When to book flights from Belfast Intl to London

Are your dates flexible? Find out the best times to travel from Belfast Intl to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Belfast Intl Airport to London flights

  • What is the cheapest flight from Belfast Intl Airport to London?

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to London was £17 for a one-way ticket and £35 for a return.

  • Which aircraft models fly most regularly from Belfast Intl Airport to London?

    The Airbus A320-100/200 is the aircraft model that flies most regularly on the Belfast Intl Airport to London flight route.

  • Which airline alliances offer flights from Belfast Intl Airport to London?

    oneworld is the only airline alliance operating flights between Belfast Intl Airport and London.

  • On which days can I fly direct from Belfast Intl Airport to London?

    There are direct flights from Belfast Intl Airport to London on a daily basis.

  • Which is the best airline for flights from Belfast to London, easyJet or Ryanair?

    The two airlines most popular with KAYAK users for flights from Belfast to London are easyJet and Ryanair. With an average price for the route of £75 and an overall rating of 6.9, easyJet is the most popular choice. Ryanair is also a great choice for the route, with an average price of £76 and an overall rating of 6.9.

  • How does KAYAK find such low prices on flights from Belfast Intl Airport to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast Intl Airport to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast Intl Airport to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Belfast Intl Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast Intl Airport to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to Belfast Intl Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Belfast Intl Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Belfast Intl Airport to London

  • Looking for a cheap flight from London to Belfast Intl Airport? 25% of our users found flights on this route for £25 or less one-way and £48 or less round-trip.

Prefer to fly direct from Belfast Intl Airport to London?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Belfast Intl to London.
Find which airlines fly direct from Belfast Intl Airport to London, which days they fly and book direct flights.

Direct departures

Belfast Intl to London

Monday

Ryanair, easyJet

Ryanair, easyJet

Tuesday

Ryanair, easyJet

Ryanair, easyJet

Wednesday

Ryanair, easyJet

Ryanair, easyJet

Thursday

Ryanair, easyJet

Ryanair, easyJet

Friday

Ryanair, easyJet

Ryanair, easyJet

Saturday

Ryanair, easyJet

Ryanair, easyJet

Sunday

Ryanair, easyJet

Ryanair, easyJet

See more direct flights

Direct returns

London to Belfast Intl

Monday

Ryanair, easyJet

Ryanair, easyJet

Tuesday

Ryanair, easyJet

Ryanair, easyJet

Wednesday

Ryanair, easyJet

Ryanair, easyJet

Thursday

Ryanair, easyJet

Ryanair, easyJet

Friday

Ryanair, easyJet

Ryanair, easyJet

Saturday

Ryanair, easyJet

Ryanair, easyJet

Sunday

Ryanair, easyJet

Ryanair, easyJet

See more direct flights

Reviews of the top 4 airlines flying from Belfast Intl to London

 
See real verified KAYAK customer reviews for airlines flying from Belfast to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Belfast Intl to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.9
RyanairOverall score based on 5270 reviews
6.5Comfort
6.0Food
6.7Boarding
7.5Crew
5.6Entertainment
Airline reviews

Delay in boarding with no explanation why. Stood for about 40 mins waiting to board

6.0 GoodAndy, Jan 2026
ALC - EDI
Read more Ryanair reviews

Delay in boarding with no explanation why. Stood for about 40 mins waiting to board

Great flight just took some time to board even when lining up early for the flight, even taking off took longer then expected.

Rubbish moved my seat don’t know why same seat configuration cost me extra so me and my wife could sit together now I know why no paper ticket so they can do this

Slow and delayed boarding, including standing outside 15m in -3 temperatures, Late take-off approx 45 mins Very slow bag delivery approx 45 min - no explanation

The flight boarded nice and early and this meant there was no sudden rush at the gate. The only down side was the cabin was very cold 🥶

Flying from Newquay was an absolute dream! Would 100% recommend flights from there!

It would have been better if I was not ill so I didn't go and I didn't come back and I could not transfer my tickets to a later date as Ryanair stop flying from Manchester at the end of October till next year

Take off was great but landing is always with a bump.

Flight was delayed by 1 hour 45 minutes. Aircraft was cramped, dirty and uncomfortable. Boarding staff more interested in charging you for oversize baggage than getting you on board. Overall not a pleasant experience.

Passengers next to me insisted I change seats so they could sit together. I had to frequently move so that when the sear belt sign was on I was in my proper seat! I was returning from helping my mum with my dad's things after his sudden death and didn't feel like arguing with the other passengers.

The best budget airline in Europe. Flight was on time, crew friendly and worked hard during flight and were able to meet our needs. Only downside (not the airline's fault), there were no rear steps.

It was transportation nothing more. I will give a positive rating over Ryanair. We missed our Ryanair flight the night before and received rude and unconcerned treatment from the Ryanair customer service. It was late. We were very tired and stressed after doing our best to get to the airport. The so called customer service ladies were completely unconcerned from the start. Aside from that, the flight to London seemed to be their opportunity for advertising. No time to relax as attendants were constantly in the aisle selling. I will never fly Ryanair again!!

Boarding could be better. To get through your gate but to be stood in a corridor for 20 minutes is not great.

The plane was postponed for over 2.5 hours, which meant that all four of us missed the check in time for our ongoing trip to Melbourne. We had to buy new tickets for 4 people as we had to forfeit the ones we had. The cost was really unfair. i understand that it was snowing during the first leg of the plane for that morning. Surely the cost could have been shared by the airline and not all by us. I could have bought insurance - but you can see how much I travel. I will need to chose more trustworthy airlines.

The true is that travel from London to Faro on 11/12/2025 by BA was cancelled, so I did not go to Faro, so i did not board easy flight. The mediocre qualification to you was because even when i bought an insurance, i could not change date neither obtain reimbursement. It could be ideal if you do something in order for me not to lose the purchase Thank you

Queuing for quite a while despite using the "speedy boarding".

Would not advise EasyJet for a 5 hour flight…small plane and hence a lot of turbulence. No inflight entertainment so struggle to pass time in cramped seats. We also fell victim to extra charge for our cabin bags, although bag dimensions were ok, but the handle was rigid and slightly fell outside their testing cage!!….never again will we fly with this airline and be party to their scams for making money!

The food and so are to expensive and old . Crew whas not very friendly . Apparently some other passenger can just Push through the waiting people to board while almost punching me and a father with a child down the stairs. Its always something with easy jet . The seats of row 26 where lose . And for a guy of my size there is absolutely no leg room at all .

Nice to fly out of Orly smaller easier to navigate airport. Being able to receive boarding pass well in advance of trip was comforting to know all travel was in order.

Liked. The check-in was pretty quick as they had 5 desks working.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

Easy, straightforward boarding process. Flight attendant was lovely and attentive, food was delicious - especially dinner, I had the roasted chicken in a mushroom sauce with potatoes - and entertainment selection was top notch. I would fly with BA again.

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

Crew was good. Seat was worn but overall okay. The infotainment system is outdated and needs to be updated. BA should provide free WiFi for club world/business class passengers.

I really liked it when the First Officer mentioned that we could see Paris out of the window on the left.

Pilot announcements were clear. Boarding is too slow compared to budget carriers.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

This review if for American Airlines. From London to LA, British Airways customers flew American Airlines and there was a small incident on the plane with a customer that was sitting next to me. She had a gluten free meal which she selected online. The flight attendant brought her food and both times, it contained gluten (bread, cracker) and by the second time, the customer mentioned about the issue to the flight attendant because she is highly allergic to gluten. Customer was very gentle and just wanted to note that both her meals contained gluten on the tray. The whole situation could have ended really well if flight attendant just apologized and mentioned she would relay the message to the responsible party. Instead, she entered defensive mode and started making some BS excuse about how the cracker that was supposed to be mine, fell onto her tray instead. Mind me, I already had that cracker on my tray. I doubt I would be given two. Also, she mentioned that the bread from the previous meal was gluten free. REALLY? I ate that bread and it tasted like it had PLENTY of gluten. The whole situation was handled so poorly, not only by that one flight attendant, but by 2 others. The reason I intervened is because the customer sitting next to me was tearing and all she did was mention the mistake which could have cause her health great damage, and instead she received attacks and excuses. AA, you should train your employees how to better handle situations like this. A 'well, I don't see why this problem is a big deal since you (the customer with allergies) read the ingredients and avoided eating the cracker that "accidentally fell" from the tray of the customer sitting next to you,' should not have been coming out of a flight attendant's mouth.

Continue to be disappointed that the “food” for “ordinary” fare paying passengers is poor - on this flight it consisted of a packet of two biscuits and a small bottle of water … not even offered a “free” cup of tea or coffee. Suggest a review of the “menu” and offer a hot drink to ordinary (economy class) passengers. On this route there are many far cheaper flights available - paying almost £200 for a flight that could have been bought for less than half this price should have some “perks” - offering hot drinks to all passengers would, in my opinion, be a cost effective measure which would improve the image of British Airways.

Very late to leave, poor communication on expected departure time and when boarding actually started.

Everything was perfectly fine, it’s exactly what you would hope for from a budget airline. You get what it says on the tin, what more could you ask for?

Cheap flight but I didn't like the almost one hour delay because of paperwork!!!!

Gate is far at Leeds Bradford Airport. However, as the flight was less than half full, it was calm and not stressful. Great take off and landing. Friendly staff

Boarding was started early and we were lined up in. A glass tunnel on the tarmac we were left standing there for an hour with no information the flight left and arrived 30 mins late

It was great. We arrived a few minutes late but the crew were concert and kind about it. It was a nice smooth fly thanks be to Jesus. I prayed for smooth flight and Yahuwah answered my prayer.

Need more check in desks at Marrakech. Even if you are travelling with hand luggage only, you still need to 'check in' to get the old style boarding pass. Unfortunately they haven't thought to separate out the people checking in luggage to a separate desk. Flight was delayed leaving but arrived on time. Limited food options on board and very overpriced.

We bought tickets for £30 from kayak but we paid £55 for check in to rayan , they slaught us

Flight was delayed so long we missed our second flight. Entire trip had to be cancelled. Ryanair refused to help us.

Stanton airport is outdated, pure equiped, airport. Fire alarms, power outages is a common routine, wich result ir flights delay , additional money spending and huge gathering of people in airport wich is unsafe.

Everything you need to know for your flight from Belfast Intl to London

Information on your arrival and departure airports