✉️ How Long Does International Mail Take?
Transit times for letters, postcards and documents sent by post, route by route
The short answer: an ordinary international letter or postcard is normally in the recipient's hands somewhere between one and three weeks on a well-served route, and three to six weeks on a difficult one. Unlike a courier shipment, ordinary letter mail carries no guarantee. Some posts publish estimates, such as Canada Post's 4–7 business days, but none promise a date and door-to-door times often run longer. If a specific day matters, letter mail is the wrong product; skip to sending documents by courier.
Typical International Letter Delivery Times
Ranges below are for ordinary letter post leaving the United States, from the day the item is collected to the day it is delivered. They apply in broadly the same way in the other direction, and to postcards, greeting cards and unregistered documents. Find specific routes further down. These are calendar days.
| Destination | Usually arrives in | Not unusual |
|---|---|---|
| Canada | 7–14 days | Up to 3 weeks |
| United Kingdom & Ireland | 7–14 days | Up to 3 weeks |
| Western Europe | 7–16 days | Up to 4 weeks |
| Eastern Europe | 10–21 days | Up to 5 weeks |
| Japan, South Korea, Singapore | 10–18 days | Up to 4 weeks |
| China & Hong Kong | 14–28 days | Up to 6 weeks |
| India | 14–30 days | Up to 7 weeks |
| Australia & New Zealand | 10–21 days | Up to 5 weeks |
| Middle East | 14–25 days | Up to 5 weeks |
| Latin America | 14–35 days | Up to 8 weeks |
| Africa | 18–40 days | Two months or more |
Planning ranges drawn from typical postal performance, not commitments. Island, rural and conflict-affected destinations sit at the long end of every row, and December adds one to two weeks almost everywhere.
How Long Does a Letter Take? Common Routes
These are the routes people ask about most. Direction matters a little: the sending post decides how quickly the letter leaves, and the receiving post decides how quickly it arrives.
| Route | Usually arrives in | Not unusual | Notes |
|---|---|---|---|
| USA to UK (including Scotland) | 7–14 days | Up to 3 weeks | Royal Mail delivers. Scottish islands sit at the long end. |
| USA to Ireland | 7–14 days | Up to 3 weeks | An Post delivers. $1.75 in postage covers a 1 oz letter. |
| USA to Germany | 7–14 days | Up to 3 weeks | Deutsche Post delivers. |
| USA to Japan | 7–14 days | Up to 4 weeks | Japan Post delivers. Often at the fast end for Asia. |
| USA to South Korea | 10–18 days | Up to 4 weeks | Add the Korean postcode and write the country in English. |
| USA to Canada | 7–14 days | Up to 3 weeks | Short distance, but it still crosses an exchange office. |
| USA to Mexico (including Mexico City) | 14–28 days | Up to 6 weeks | Mexican delivery is slow and uneven. Use a courier if the letter matters. |
| USA to Ukraine | 14–35 days | Two months or more | Service depends on the war. Check USPS alerts first and expect gaps by region. |
| UK to USA | 7–14 days | Up to 3 weeks | Royal Mail lists a 5–7 working day aim for worldwide services on its USA page. That is an aim, not a promise. |
| Ireland to USA | 7–14 days | Up to 3 weeks | |
| Germany to USA | 7–14 days | Up to 3 weeks | |
| France to USA | 7–14 days | Up to 3 weeks | |
| Canada to USA | 5–10 days | Up to 3 weeks | Canada Post lists 4–6 business days as an estimate, not a guarantee. |
| Japan to USA | 14–21 days | Up to 4 weeks | Japan Post lists an 18-day average for airmail from Tokyo. |
| Japan to UK, Germany or Ireland | 10–16 days | Up to 4 weeks | Japan Post lists 12 days to the UK and Germany. Ireland is not listed; plan for slightly more. |
| South Korea to USA | 10–18 days | Up to 4 weeks | |
| Mexico to USA | 10–21 days | Up to 5 weeks | |
| Within Europe (e.g. Finland to Ireland) | 4–10 days | Up to 3 weeks | Germany to UK and other cross-border pairs fall here too. |
| Korea to Brazil, or other long pairs without direct flights | 14–30 days | Up to 8 weeks | Letters often route through a third country. |
Calendar days, ordinary airmail letters, typical planning ranges. Official references: Canada Post letter-post standards, Japan Post average days from Tokyo, Royal Mail USA page. For suspended destinations see USPS international service alerts.
Letters are not stopped by the U.S. changes to duty-free parcels when they contain only correspondence. But anything with goods inside is treated as a parcel, needs a customs declaration and can be refused or returned. Some foreign posts have also limited mail to the U.S. at times, so check at the counter.
Letter Post vs Parcel Services
The gap between a letter and a courier envelope carrying the same sheet of paper is enormous, and it is worth seeing the options side by side before you choose:
| Service type | Typical transit | Tracking | Commitment |
|---|---|---|---|
| Ordinary letter / postcard post | 1–3 weeks | None | None |
| Registered letter mail | 2–5 weeks | Limited scans, signature on delivery | None — security, not speed |
| Economy postal parcel | 1–4 weeks | Partial, often gaps after export | None |
| Priority postal parcel | 6–10 business days to many major markets | Yes on most lanes | Target, not a guarantee |
| Express postal / courier document | 1–5 business days | Yes, full scan history | Delivery date given; refunds vary by service |
To put a date on a specific route and service, run it through our international delivery time estimator, which applies transit times plus the clearance allowance for the destination. For parcels rather than letters, the fuller picture is in how long international shipping takes.
Why Letters Are Slower Than Parcels
It seems backwards that the lightest, simplest item takes the longest. The reasons are structural, not accidental:
- Letter mail flies on space-available capacity. Courier shipments travel on aircraft the carrier controls or has contracted. Bulk letter mail moves on whatever belly space an airline has left over, so a full flight simply means the sack waits for the next one.
- It changes hands between two separate organisations. Your post office carries the item to an international exchange office; the destination's post office takes over from there. Neither is accountable for the other's queue, and nobody owns the journey end to end.
- There are no scans to chase. An unregistered letter is never scanned individually, so a delay is invisible until the item fails to arrive. Nothing in the system flags a sack that has been sitting for four days.
- Mail is processed in batches. Foreign letter mail is worked when the destination's volumes allow. Domestic mail and tracked parcels are cleared first.
- Customs can still stop it. Genuine correspondence passes freely, but anything with weight or bulk suggesting goods can be pulled for inspection — and a letter has no customs declaration to explain it.
Postcards, Documents and Registered Mail
- Postcards travel as letter mail and arrive in roughly the same window, occasionally a few days later because they are handled in separate streams from enveloped mail. The classic "arrived after I got home" postcard is normal, not a failure.
- Documents — contracts, certificates, transcripts — are the strongest case for paying more. They are light, so courier document rates are relatively cheap; they are usually irreplaceable; and a courier envelope declared as documents generally needs no commercial invoice, which removes most of the customs risk.
- Registered mail buys chain-of-custody and a signature, not speed. Each secure handoff is a stop, and registered items can be slower than ordinary letters on the same route. USPS offers Registered Mail to most countries on First-Class Mail International. Choose it when proof of delivery matters more than the date.
- Certificates of mailing and return receipts prove you sent something and, eventually, that it landed. Neither speeds anything up.
When to Send Documents by Courier Instead
Letter post is the right answer for anything sentimental, routine or replaceable. Switch to a courier when any of these apply:
- A deadline exists. Visa applications, tender submissions, court filings and closing documents all have dates that letter mail cannot be asked to meet.
- The document cannot be reissued quickly. An apostilled certificate or an original signed contract is worth far more than the shipping difference.
- Somebody needs to confirm receipt. A courier gives you a signature and a timestamp within days rather than a return receipt in a month.
- The destination has unreliable final-mile delivery. On routes where the local post struggles, a courier's own delivery network is the difference between two days and never.
Courier envelopes have their own low-weight pricing, so the gap is smaller than people assume. FedEx International Priority and DHL Express usually take 2–4 business days to major markets. See the four-carrier comparison for how to choose, and USPS international delivery times for its tracked options.
When Is an International Letter Actually Lost?
Postal operators will not usually open an inquiry on an international item until a waiting period has passed — commonly around 30 days for most destinations, and longer for surface mail or remote regions. That is not stalling: many items reported missing at three weeks turn up later. For an unregistered letter there is also nothing to investigate, because no record of the individual item exists; an inquiry is only meaningful for registered, insured or tracked mail. Practically: if a letter matters enough that you would file a claim, it matters enough to send registered or by courier in the first place.
Related guides
Sending goods rather than paper? Start with how long international shipping takes and the customs forms guide. If the item is small and low-value, you will need a CN22 declaration; anything heavier or worth more takes a CN23. Check USPS prohibited and non-mailable items before posting anything unusual. The postal network has its own rules, and they can be stricter than the couriers'.