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London St Pancras International to Heathrow Terminal 3 Train prices and times

Looking to travel from London St Pancras International to Heathrow Terminal 3? You can buy train tickets with Trip.com for as low as €18.82, with average prices for this route around €18.82.

To get the best deals, we recommend buying in advance and researching alternatives such as split tickets.

View More Trains

Departure	Arrival	Operator	Find Tickets
08:32 49 minutes, Changes required London St Pancras International	09:21 Heathrow Terminals 2 & 3	Elizabeth line	Find Tickets
08:42 47 minutes, Changes required London St Pancras International	09:29 Heathrow Terminals 2 & 3	Elizabeth line	Find Tickets
08:47 49 minutes, Changes required London St Pancras International	09:36 Heathrow Terminals 2 & 3	Elizabeth line	Find Tickets
09:02 49 minutes, Changes required London St Pancras International	09:51 Heathrow Terminals 2 & 3	Elizabeth line	Find Tickets
09:03 56 minutes, Direct London St Pancras International	09:59 Heathrow Terminals 2 & 3	Elizabeth line	Find Tickets
09:06 1 hour, Direct London St Pancras International	10:06 Paris	Elizabeth line	Find Tickets

London St Pancras International to Heathrow Terminal 3 Train Route Details

First train

03:34

Last train

23:02

Departure station

London St Pancras International

Arrival station

Heathrow Terminal 3

Journey time

44 minutes

Distance

24 km

Price

€18.82*

Train operators

Elizabeth line, Thameslink

How to book cheap train tickets from London St Pancras International to Heathrow Terminal 3

Season Tickets for frequent travel

Are you frequently traveling between London St Pancras International and Heathrow Terminal 3 on a weekly, monthly, or annual basis? Season Tickets provide unlimited travel during specific times, allowing you to freely hop on and off trains between two stations without worrying about individual ticket bookings, and offering significant savings in the process.

Network Railcard for South East England

To save on train travel in South East England, consider getting a Network Railcard. For a £30 annual fee, this railcard offers 1/3 off most fares, including routes to and from London. Whether for standard or off-peak tickets, it's highly advantageous for frequent travelers within this region.

Traveling in off-peak train times

Taking advantage of Off-Peak train tickets is another effective way to save on your train journey from London St Pancras International to Heathrow Terminal 3. These tickets are generally cheaper and can be used during quieter periods, typically outside of morning (6:30 AM–9:30 AM) and evening (4:00 PM–7:00 PM) rush hours on weekdays.

Get 1/3 off with a Railcard

Railcards offer discounts of up to 1/3 on most tickets. There are various types of Railcards catering to different types of travelers, such as the 16–25 Railcard, the Family & Friends Railcard, and the Senior Railcard. For more information on Railcards and how they can help you save, visit Railcards here.

Split tickets to save an average extra 30%

Splitting tickets is a perfectly legal practice that involves purchasing separate, cheaper tickets for different segments of your journey on the same train instead of a single ticket for the entire trip. For example, if you are travelling from London St Pancras International to Heathrow Terminal 3, you might discover that buying a ticket from A to C, and then another ticket from C to B, is more economical than a direct ticket.

Book in advance to save an average of 61%

Advance Tickets are usually released up to 12 weeks before the travel date and can be significantly cheaper than tickets purchased closer to departure. By planning your trip from London St Pancras International to Heathrow Terminal 3 ahead of time and securing your tickets early, you can save up to 61% on the cost of your travel.

Travel in a group to save 1/3

If you are planning a trip with a group of three to nine people, take advantage of ⅓ off standard fares with group travel discounts, offered by many train companies, perfect for journeys with your family, friends, or colleagues.

London St Pancras International to Heathrow Terminal 3 train ticket types

There are various ticket types available for this route, each with different benefits and restrictions. Explore below to see which ticket type is best suited to your travel needs:

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Why Book Train Tickets With Trip.com?

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If you find trains for a cheaper price elsewhere, let us know and we'll refund the difference*
Split Tickets
Save an average of 30% on train fares by splitting your London St Pancras International to Heathrow Terminal 3 journey
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*After comparing the full year of 2023 for SplitTickets and full-price tickets on Trip.com, the average savings rate for SplitTickets is 30%.

Trains from London St Pancras International to Heathrow Terminal 3 from €18.82

Save an average of 30%* with SplitTickets

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London St Pancras International to Heathrow Terminal 3 Train prices and times

London St Pancras International to Heathrow Terminal 3 Train Route Details