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$801+ Cheap flights to Belfast Intl

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
— BFS
12 Sep — 19 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Belfast Intl in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Belfast Intl Airport
Explore the most affordable flight options available to Belfast Intl Airport. Find the lowest fares based on data from user searches, with prices last updated on 13 August 2026.

Thu 17/911:00 -
2 stops55h 00m
Sun 27/917:15 -
2 stops30h 45m
Deal found 11/8$1,757
Thu 10/911:00 -
2 stops42h 35m
Thu 17/906:10 -
2 stops41h 50m
Deal found 8/8$1,948
Mon 7/911:00 -
2 stops37h 30m
Mon 21/906:10 -
2 stops41h 50m
Deal found 12/8$1,958
Wed 23/920:30 -
2 stops32h 10m
Wed 30/906:10 -
2 stops45h 25m
Deal found 12/8$2,265
Thu 24/911:00 -
2 stops41h 20m
Thu 1/1006:10 -
2 stops41h 50m
Deal found 9/8$2,442
Sun 20/1221:35 -
3 stops34h 50m
Mon 4/117:55 -
3 stops62h 30m
Deal found 9/8$3,833

Find flight deals to Belfast Intl Airport

Find the latest flights to Belfast Intl in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 13 August 2026.

Return from

$1,757

One-way from

$801
17/9-27/9
  • 17/9-27/9
  • 4 total stops
  • 85h 45m total
  • Sydney to Belfast
Search Deals
9/9
  • 9/9
  • 2 total stops
  • 53h 45m total
  • Sydney to Belfast
Search Deals

Cheapflights Fare Finder

 
Locate flights to Belfast Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 13 August 2026.
Use the filters below to find and compare flights to Belfast Intl Airport that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Thu 17/9

11:00-09:00

2 stops55h 00m

Belfast Intl

Sun 27/9

17:15-09:00

2 stops30h 45m

$1,757

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Thu 10/9

11:00-20:35

2 stops42h 35m

Belfast Intl

Thu 17/9

06:10-09:00

2 stops41h 50m

$1,948

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Mon 7/9

11:00-15:30

2 stops37h 30m

Belfast Intl

Mon 21/9

06:10-09:00

2 stops41h 50m

$1,958
Fastest return journey

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Wed 23/9

20:30-19:40

2 stops32h 10m

Belfast Intl

Wed 30/9

06:10-12:35

2 stops45h 25m

$2,265

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Thu 24/9

11:00-19:20

2 stops41h 20m

Belfast Intl

Thu 1/10

06:10-09:00

2 stops41h 50m

$2,442

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Sun 20/12

21:35-21:25

3 stops34h 50m

Belfast Intl

Mon 4/1

17:55-19:25

3 stops62h 30m

$3,833

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Sat 19/12

06:00-08:55

2 stops37h 55m

Belfast Intl

Sun 20/12

14:10-18:35

2 stops41h 25m

$4,531
Cheapest one-way

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Wed 9/9

11:00-07:45

2 stops53h 45m

$801
Fastest single journey

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Thu 1/10

08:15-19:30

2 stops44h 15m

$804

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Mon 30/11

20:05-17:35

3 stops56h 30m

$960

Flights are sorted by cheapest return flights first.

Deals found on 11/8

Sorted by cheapest first

Best time to book a flight to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Belfast Intl Airport

What are the cheapest airlines that fly to Belfast Intl?

The cheapest airline flying from Sydney to Belfast Intl is British Airways.

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast Intl. Reviews last updated 13 August 2026.
Read through reviews of airlines serving the United Kingdom, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,161 reviews
Check prices

Overall

6.7

Comfort

6.8

Crew

7.7

Boarding

7.0

Food

6.4

Entertainment

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2026

BUD - LHR

We had an absolute nightmare experience with British Airways. Check in was bad. They “lost” our business class seats that I selected a long time ago. Our luggage almost didn’t make it on the plane in London to LAX. Flight attendant was rude!! Not that it should matter but she thought bc of the seat assignment issue we were “upgraded” and that’s we had no choice in meals. Not that the meals were any good anyway.
British Airways
6.7
Okay
8,161 reviews
British Airways
6.7
Okay
8,161 reviews
Check prices

Overall

6.7

Comfort

6.8

Crew

7.7

Boarding

7.0

Food

6.4

Entertainment

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2026

BUD - LHR

We had an absolute nightmare experience with British Airways. Check in was bad. They “lost” our business class seats that I selected a long time ago. Our luggage almost didn’t make it on the plane in London to LAX. Flight attendant was rude!! Not that it should matter but she thought bc of the seat assignment issue we were “upgraded” and that’s we had no choice in meals. Not that the meals were any good anyway.

FAQs about flying to Belfast Intl

  • Can I find cheaper flights to Belfast Intl if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Belfast Intl on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Belfast Intl?

    Based on reviews from Cheapflights users, British Airways is rated the highest out of the airlines that fly to Belfast Intl.

  • What is the cheapest airport to fly to in Belfast Intl?

    Belfast Intl is currently the cheapest airport to fly to in Belfast Intl. One-way flights to Belfast Intl typically cost $77, while return flights cost around $90.

  • Where does the fastest flight to Belfast Intl depart from?

    For those looking to save time traveling to Belfast Intl, Melbourne offers the quickest one-way flight (27 hours 15 minutes).

  • Does Belfast Intl have car hire?

    Yes. Those touching down at Belfast Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Belfast Intl?

    Yes. Belfast Intl has hotels nearby for those requiring accommodations. Maldron Hotel Belfast Airport is the closest property to Belfast Intl (0.0 km away from Belfast Intl).

See more FAQs

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Belfast Intl flexibly with Cheapflights today.

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