London to Belfast Flights on Aer Lingus

Book London to Belfast flight deals*

Try updating your route (origin and/or destination) or interact with individual dates below in order to find offers.
May 2025
No result for this month.
Jun 2025
No result for this month.
Jul 2025
No result for this month.
Displaying fares for May-2025
24

Sa

MAY

25

Su

26

Mo

27

Tu

28

We

29

Th

30

Fr

31

Sa

01

Su

JUN

02

Mo

03

Tu

04

We

05

Th

06

Fr

07

Sa

08

Su

09

Mo

10

Tu

11

We

12

Th

13

Fr

14

Sa

15

Su

16

Mo

17

Tu

18

We

19

Th

20

Fr

21

Sa

22

Su

23

Mo

Explore other routes

Explore Aer Lingus's Top-Pick Destinations