Cheap Flights from Dublin to London from US$20

Frequently Asked Questions

• What are the cheapest flights from Dublin to London (DUB-LON)?

  Based on Trip.com data, Ryanair offers one-way fares as low as US$20 on Cheapest nonstop routes (e.g. DUB to STN on Wed, Oct 21), while Ryanair offers Cheapest nonstop round-trips from US$38 departing on Thu, Nov 5 and returning on Tue, Nov 10.

• Which airlines offer direct flights from Dublin to London?

  At the moment, you can catch a nonstop flight from Dublin to London with the following airlines, including: Ryanair Aer Lingus British Airways Ryanair UK Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Dublin to London?

  It takes about 1 hour 30 minutes to fly from Dublin to London.

• When is the best time to book flights from Dublin to London?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Dublin to London is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Dublin to London?

  Based on Trip.com data in the past 4 weeks, there is 450 flight per week flying from Dublin to London. You can check the weekly schedule for popular airlines on this route below: Aer Lingus: S/M/T/W/T/F/S -- EI168 (14:42)

• How can I find the best deals on flights from Dublin to London?

  To find best deals on flights from Dublin to London, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Oct 21, with one-way flights priced at just US$20.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Ryanair.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for London travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Dublin (DUB) to London (LON) the cheapest?

  The cheapest months to fly from Dublin to London is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Dublin to London on?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Dublin to London on October 21, 2026 with Ryanair, with prices starting at US$19.

• Which airports fly into London from Dublin?

  You can land at any one of the following hubs in London: London City Airport (LCY), London Gatwick Airport (LGW), Heathrow Airport (LHR), London Luton Airport (LTN), London Southend Airport (SEN), and London Stansted Airport (STN). Flying from Dublin Airport to Heathrow Airport (DUB-LHR) is by far the most common option on this route.

• Is there any time difference between Dublin and London?

  The time difference between London and Dublin is 0m.

• How do I change or cancel my ticket from Dublin to London?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Dublin to London?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Dublin to London is US$104. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Dublin to London?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Dublin to London is US$125. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Dublin to London on Trip.com?

  Enter Dublin and London, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Dublin to London route?

  Ryanair and Ryanair UKare the most popular budget airlines flying from Dublin to London. Check baggage, seat and payment fees before comparing the final price.