£49 Cheap Flights from Shannon (SNN) to London (LHR)

You can find one-way and return flights from Shannon (SNN) to London (LHR) with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when SNN to LHR ticket fares go up or down.

The cheapest months to fly from SNN to LHR are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

Only one airline offers direct flights from Shannon (SNN) to London (LHR-Heathrow): Aer Lingus operates 20 direct flights from Shannon (SNN) to London (LHR-Heathrow) every week.

To find a cheap flight from Shannon (SNN) to London (LHR), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

The earliest flight from Shannon (SNN) to London Heathrow (LHR) typically departs around 7:30 AM, operated by Aer Lingus. This is a seasonal service, active in March, April, May, June, July, August, September, and October. An early departure like this allows you to arrive in London with plenty of time to start your day. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

A direct flight from Shannon (SNN) to London Heathrow (LHR) typically takes around 1 hour 30 minutes. This route covers a distance of approximately 594 kilometers. If you opt for a connecting flight, a one-stop journey usually takes longer, around 17 hours 30 minutes, while flights with two or more stops average about 12 hours 30 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some flexibility in your travel plans.

Select the "Business class" and "First class" filters when looking for Shannon (SNN) to London (LHR) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

It's easy to earn miles on a Shannon (SNN) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to London from Shannon Airport (SNN), you can fly directly into Heathrow Airport (LHR). Some flights may connect through major hubs like Frankfurt Intl. (FRA) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Shannon (SNN) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Shannon (SNN) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Shannon (SNN) to London (LHR) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.