Cheap flights from Dublin to London from $17 DUB → LCY, LGW, LHR, LTN, SEN, STN

Found recently, and the cheapest we hold

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $34 to $46.

At $34, the cheapest return found recently is at the low end of that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 4-night return fares leaving within 3 days of 5 Dec to compare.

Every date we hold

241 fares on 12 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $34.

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $16 to $18.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

No. We hold one-way fares on 3 other departure dates within 3 days of 10 Dec, and none is cheaper.

Every date we hold

219 fares on 20 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $17.

Return

Fares 14 to 29 days before departure were typically 11% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 30 to 59 days before departure were typically 6% lower than 0 to 6 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Dublin to London?

The cheapest return found recently is $34 with Ryanair, 5 Dec to 9 Dec, found 2 days ago. The cheapest return fare on each of 12 departure dates is usually $44 to $109.

How much is a one-way flight from Dublin to London?

The cheapest one-way found recently is $17 with Ryanair, 10 Dec, found 2 days ago. The cheapest one-way we hold, of any age, is $17 with Ryanair, 10 Dec, found 3 days ago. The cheapest one-way fare on each of 20 departure dates is usually $18 to $23.

What is the cheapest month to fly from Dublin to London?

December 2026 is the cheapest month for a return, from $34, 5 Dec to 9 Dec, found 2 days ago. It is the cheapest month for a one-way too, from $17, 10 Dec, found 3 days ago.

Every date in December 2026

How far ahead should I book a flight from Dublin to London?

In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 11% lower than 0 to 6 days before departure. One-way fares 30 to 59 days before departure were typically 6% lower than 0 to 6 days before departure.

Is there a direct flight from Dublin to London?

Yes, the cheapest nonstop return found recently is $34 with Ryanair, 5 Dec to 9 Dec, found 2 days ago. The cheapest nonstop one-way found recently is $17 with Ryanair, 10 Dec, found 2 days ago.

How long is the flight from Dublin to London?

The cheapest nonstop one-way found recently, with Ryanair on 10 Dec, takes 1 h 20 min from Dublin Airport (DUB) to Stansted Airport (STN).

Which airlines have the cheapest flights from Dublin to London?

Between 13 Nov and 16 Oct 2027, Ryanair has the cheapest return on 11 of the 12 departure dates we hold, and British Airways on 1. Between 14 Nov and 21 Oct 2027, Ryanair has the cheapest one-way on all 20 departure dates we hold.