All Carriers Compared: USPS vs UPS vs FedEx vs DHL
Every major U.S. option for international shipping in one place, with a clear starting point for each shipment
The Short Version
USPS for letters and light, non-urgent parcels. UPS or FedEx when you also ship domestically, or need ground to Canada or deferred options. DHL Express as a strong international express option. For express parcels the three couriers sell the same tiers at similar speeds, so the deciding factor is usually the price for your route.
Which Carrier for Which Shipment
| Shipment | Start with | Then compare | Why |
|---|---|---|---|
| Letter, card or small document | USPS | First-Class Mail International; only USPS sells letter post | |
| Urgent document | DHL or FedEx | UPS | Envelope services; compare prices on your lane |
| Gift under 4 lb, under $400 | USPS | First-Class Package International | |
| Heavy compact item, up to 20 lb | USPS Flat Rate | Couriers above about 10 lb | Flat Rate ignores weight up to the limit |
| Bulky, light parcel | USPS | Courier with a discount | Couriers charge DIM weight at ÷ 139 |
| Parcel over 70 lb | UPS or FedEx | DHL | USPS stops at 70 lb |
| Heavy parcel to Canada | UPS Standard | FedEx International Ground | Road service |
| Heavy parcel to Mexico | UPS Standard | Express air | Road service; postal delivery is less predictable |
| Deadline this week | Any courier express | Same tier, 2–4 business days to major markets | |
| Before-noon delivery | FedEx Priority Express | UPS Express, DHL 10:30 or 12:00 | Selected postcodes |
| Online orders to customers | USPS, FedEx Connect Plus | UPS Worldwide Economy (contract) | Lower-cost tracked delivery |
| Dangerous goods | Ask the carrier first | Rules vary; USPS accepts very little internationally |
All Four Side by Side
| USPS | UPS | FedEx | DHL | |
|---|---|---|---|---|
| Main international services | Priority Mail Express International, Priority Mail International, First-Class Package International Service, First-Class Mail International | Worldwide Express Plus, Express, Saver, Expedited; Standard to Canada and Mexico; contract-only Worldwide Economy | International First, Priority Express, Priority, Economy, Connect Plus; International Ground to Canada | Express 9:00, 10:30, 12:00, Express Worldwide, Express Envelope |
| Typical speed to major markets | 3–5 business days (Express), 6–10 (Priority), 1–3+ weeks (First-Class Package) | 2–4 business days (Saver), 3–5 (Expedited) | 2–4 business days (Priority), 3–6 (Economy) | 2–4 business days (Worldwide) |
| Largest parcel | Up to 70 lb, lower for some countries; 4 lb on First-Class Package | 150 lb per package | 150 lb per package; freight above that | About 70 kg (154 lb) per piece; confirm for your lane |
| Dimensional weight | Applied only to certain services; flat-rate boxes avoid it | L×W×H ÷ 139 in inches and pounds | L×W×H ÷ 139 in inches and pounds | L×W×H ÷ 139, or ÷ 5,000 in cm and kg |
| Money-back guarantee | Date-certain refund on Priority Mail Express International to selected countries only | Worldwide Express Plus and Express on the version of UPS's terms we could check; others suspended | International First, Priority Express and Priority since Feb 2026; not Economy or Connect Plus | U.S. terms cover only 9:00, 10:30 and 12:00, not Express Worldwide |
| Included cover | Up to $200 on Priority Mail Express and Priority Mail International; none on First-Class Package | $100 unless you declare more | $100 per package unless you declare more | Limited liability; Shipment Value Protection costs extra |
| Surcharges | No residential or remote fee on retail postage | Fuel, residential, remote area, demand | Fuel, residential, out-of-area, demand; no residential fee on Connect Plus | Fuel, remote area, demand and others |
| Tracking | Included on Express and Priority, with destination limits; none on Priority Flat Rate Envelope or Small Box | Scan by scan | Scan by scan | Scan by scan |
| Who clears customs | Destination post and customs, with little help from USPS | UPS brokerage; fees may apply | FedEx clearance; fees may apply | DHL clearance; fees may apply |
| U.S. pickup network | Post offices, carriers and free Package Pickup | UPS Stores, drop boxes, pickups | FedEx Office, drop boxes, pickups | Fewer U.S. locations; pickup and ServicePoint partners |
Typical planning ranges and terms as of October 2026. We do not show star ratings, on-time percentages or fixed surcharge figures, since we cannot source them consistently. Check current fuel surcharges with each carrier.
Delivery Time by Destination
Typical planning ranges from the U.S. Courier figures apply to any of the three express networks at their standard express tier.
| Destination | Courier express | USPS Priority Mail International | Details |
|---|---|---|---|
| Canada | 1–3 days | 6–10 days | Canada guide |
| Mexico | 2–4 days | 6–12 days | Mexico guide |
| UK | 2–4 days | 6–10 days | UK guide |
| Germany | 2–4 days | 6–10 days | Germany guide |
| Japan | 2–4 days | 6–10 days | Japan guide |
| China | 3–6 days | 10–20 days | China guide |
| India | 3–6 days | 10–18 days | India guide |
| Australia | 3–5 days | 6–14 days | Australia guide |
| UAE | 3–5 days | 8–14 days | UAE guide |
| Brazil | 5–10 days | 20–45 days | Brazil guide |
Understanding the Cost Differences
- List prices are not what you pay. Shipping software and resellers often sell courier labels well below list price. Compare net prices.
- Chargeable weight decides many parcels. See the DIM weight guide.
- Surcharges move every week. Courier fuel surcharges have been unusually high during 2026, so an old price can mislead.
- Duties are separate. See duties and taxes and the duty calculator.
- Cover differs. See shipping insurance before sending something valuable.