Most people don’t plan to visit a Post Office on the way to a flight. Then a birthday card is still in the bag, a business contract needs sending before a long trip or a bottle of perfume turns out to be too large for security. Heathrow is a huge airport, and postal services are spread across it in a way that isn’t obvious until you need one. This guide explains what is available at the Heathrow Airport Post Office, where to find it, what you can and can’t post and what to check before you make a special trip.
Is There a Post Office at Heathrow Airport?
Yes, but not in every terminal. According to Heathrow’s own information, the airport Post Office can be found in WHSmith in Terminal 3 Departures, landside, next to Pret A Manger, and in WHSmith in Terminal 5, landside departures, next to the South Wing. So when people search for the Heathrow Airport Post Office, they are looking for counter services inside two WHSmith shops, not a standalone branch in each terminal.
Terminals 2 and 4 are covered by post boxes rather than a staffed counter, and the same applies to the airside areas. Because services and staffing can change, check the terminal and the current details before you travel, particularly if the Post Office is the reason for your visit.
Where Are the Heathrow Airport Post Office Services Located?
Heathrow has four terminals in use: Terminals 2, 3, 4 and 5. Postal counter services are listed at Terminals 3 and 5 only, and both are landside, meaning in the public area before security. That is the part of the terminal anyone can walk into without a boarding pass.
Heathrow’s terminals are large and separate, and moving between them takes time, so don’t assume you can pop between terminals for a quick errand. Identify your terminal first, then see whether it has a counter, a post box or only a stamp machine. If you are arranging a car to the airport, give the driver the right terminal as well. NET Airport Transfers, for example, explains how its Heathrow airport transfers work on a dedicated page, which is a useful reminder of how much terminal details matter. I haven’t given walking times between terminals, because they vary and are better checked on the official Heathrow site.
Heathrow Terminal 3 Post Office
The Terminal 3 Post Office sits inside WHSmith on the departures level, landside. Post Office listings for Heathrow branches have shown mail services alongside banking and bill payments, but individual services can run at particular times and vary by branch, so don’t assume everything is available when you arrive. If you need something specific, such as a parcel service or a bill payment, check the Post Office’s branch listing first.
A passenger who is flying from Terminal 3 and needs a letter sent can usually deal with it before security. Don’t leave it until you have passed through, because the counter is on the public side.
Heathrow Terminal 5 Post Office
The Terminal 5 Post Office is inside WHSmith on the landside departures level, next to the South Wing. Like Terminal 3, it is before security, so it suits passengers who have arrived early rather than those who have already cleared the checkpoint.
As with any branch, the services on offer and the hours can change. Verify the current details before you make a special journey, and don’t assume a branch will be open at all hours.
Can You Send Parcels From Heathrow Airport?
Not through the post boxes. Heathrow states that you can’t post parcels using its post boxes, and that anything you do post may be inspected by HM Customs. A post box is for letters and postcards. If you need to send a parcel, use the Post Office counter at Terminal 3 or Terminal 5 where the branch service allows it, and check beforehand what the counter can handle.
It helps to know the difference between the three things people mix up. A post box accepts letters and cards, a Post Office counter can offer a wider range of services depending on the branch, and parcel services are a counter matter, not a post box one. Don’t use a standard post box for anything larger than a letter, and don’t assume that every counter handles every type of parcel.
Where Can You Buy Stamps at Heathrow?
Heathrow says you can buy stamps at branches of WHSmith in the terminals, and that there are coin-operated stamp machines in each terminal. For a postcard to a friend or a quick letter, that covers most needs. I haven’t listed stamp prices because Royal Mail changes them, so check the current rate for the destination.
If you are sending something international, check Royal Mail’s guidance on postage and any restrictions before you buy.
Heathrow Airport Post Boxes
Heathrow has post boxes before and after security in each terminal, so a passenger who has already cleared the checkpoint can still post a letter or postcard. They are for letters and postcards, not parcels, and anything posted may be inspected by HM Customs. For a card in your bag, they are the simplest solution.
What Is MailandFly at Heathrow?
Mail&Fly, as Heathrow refers to it, is a separate service from the Post Office. It is designed for items you can’t take through security, such as liquids over 100ml, including bottles of wine and perfume, and sharp items such as knives. You place the item in a Mail&Fly bag in the dedicated box, keep your ticket and reclaim the item later.
Heathrow says the service is operated by the bagport Group, and that a fee plus postage and packing applies, but that you only pay if you want to reclaim your goods. Not every prohibited item will qualify, and the terms, fees and claim period can change, so read the current terms before you use it. It is most useful when you discover the problem at security and don’t want to throw the item away.
Landside vs Airside: What Travellers Should Know
Landside means the public part of the terminal before security. Airside means the area after security, which you can enter only with a boarding pass. The Heathrow Post Office counters are landside, so a passenger who has already gone through security should not assume they can simply walk back.
If you have passed security and realise you needed the counter, ask airport staff what is possible before you try to return, since re-entry rules apply. The post boxes after security and the stamp machines are the easier option at that point. Access arrangements can change, so check the current layout rather than relying on memory.
Heathrow Post Office Services for Tourists, Families and Business Travellers
Tourists often want to send postcards or post souvenirs and buy stamps, and the post boxes and WHSmith branches cover that. International visitors should check the postage requirements for their destination first, since customs rules differ between countries.
Families travelling together may have a card or a forgotten item to send, and the key is to plan it before the check-in queue. A family driving down from the Midlands, for instance with a Coventry taxi booked for the trip, can build in extra time on arrival so the postal stop doesn’t eat into check-in.
Business travellers might need to send documents or correspondence before an overseas trip. They should check which services the branch offers and whether it will be open, rather than assuming a particular parcel or banking service is available. Someone setting off from the Black Country the night before, perhaps with a Wolverhampton taxi arranged, has more room to post documents before check-in. In every case, leave a margin before check-in and security.
What to Check Before Visiting the Heathrow Post Office
Start with the terminal you are using and whether it has a Post Office counter, because only Terminals 3 and 5 are listed. Check whether the counter is landside or airside, whether it is open when you arrive and whether it provides the service you need. Decide whether you are sending a letter or a parcel, whether you only need stamps and whether you want banking or bill-payment services.
Then think about what you are carrying. If you have an item that can’t pass security, Mail&Fly may be the answer. Finally, ask whether you have enough time before check-in and security, because postal errands are easy to underestimate when you are carrying luggage.
Travelling to Heathrow From Birmingham
Passengers travelling from Birmingham to Heathrow often have a longer day than they expect. The journey itself takes planning, and a postal errand on top of it needs a margin. Someone leaving Birmingham city centre, Solihull or Birmingham International for a long-haul flight might post documents at home or at a local Post Office rather than at the airport, and use the airport branch only if they have to.
For the journey, some people choose rail from Birmingham New Street, and others prefer a pre-booked car because of luggage, family travel or an early start. A pre-booked taxi service Birmingham passengers can reserve in advance is one option to compare, and NET Airport Transfers says on its website that its Heathrow transfers use fixed prices, flight tracking and meet and greet. It doesn’t provide or operate the Post Office services at the airport, and there is no link between the two. I haven’t given a Birmingham-to-Heathrow journey time, because traffic on the M40, M42 and M25 changes it considerably.
Post Office Service vs Airport Post Box
A Post Office counter can handle letters and postcards, and parcels where the branch service allows. It also sells stamps, offers banking and bill payments at selected branches and gives you staff assistance. An airport post box takes letters and postcards only, doesn’t accept parcels, has no counter service for stamps or banking, and offers no staff help. Post boxes are available before and after security in each terminal, while the counters are in Terminals 3 and 5, landside. The right choice depends on what you are sending and where you are in the airport.
Conclusion
The Heathrow Airport Post Office is smaller and more limited than many people assume: two counters in WHSmith, in Terminals 3 and 5, both landside, plus post boxes and stamp machines across the airport. For anything beyond a letter or card, the counter is the place to go, and for items you can’t take through security, Mail&Fly may help.
Check your terminal, the current opening hours and the service you need, and leave time before security.
