Postage To Canada - First Class Mail - PostGrid

Priority Mail Express International

Package/Mail Type	Commercial Price	Retail Price
Flat Rate Envelopes
Flat Rate Envelope (12.5″ x 9.5″)	$60.05	$62.70
Legal Flat Rate Envelope (15″ x 9.5″)	$60.05	$62.70
Padded Flat Rate Envelope (12.5″ x 9.5″)	$60.05	$62.70
Weight-Based Prices
0.5 lb	$61.56	$64.25
1.0 lb	$64.22	$67.05
2.0 lbs	$68.92	$71.95
3.0 lbs	$74.85	$78.15
4.0 lbs	$80.79	$84.35
5.0 lbs	$88.39	$92.30

Source: USPS 

Being one of the most used mailing options, the Priority Mail Express International service is highly reliable and fast. The postage to Canada, using this option, is determined by the weight of the package. Your mail will be delivered within three to five business days, which is the fastest delivery timeframe to mail something to Canada.

Under the new 2026 rates, the prices start from $62.70 for Flat Rate Envelopes up to four pounds for mailing through the post office. The dimensions of the package should be 12.5″ x 9.5″. This price changes according to the weight and dimensions of your mailer and packages.

For Commercial Base (online labels), the rate starts at $60.05 for Flat Rate Envelopes. All flat-rate envelopes to be sent using Priority Mail Express International are charged in the same way as other packages. The USPS offers a free mail pickup service and includes free tracking, with specific delivery options available.

Priority Mail International

Package/Mail Type	Commercial Price	Retail Price
Flat Rate Envelopes
Flat Rate Envelope (up to 4lbs)	$31.61	$32.65
Legal Flat Rate Envelope (15″ x 9.5″)	$60.05	$62.70
Padded Flat Rate Envelope (12.5″ x 9.5″)	$60.05	$62.70
Weight-Based Prices
0.5 lb	$61.56	$64.25
1.0 lb	$64.22	$67.05
2.0 lbs	$68.92	$71.95
3.0 lbs	$74.85	$78.15
4.0 lbs	$80.79	$84.35
5.0 lbs	$88.39	$92.30

Source: USPS 

The priority mail international option is cheaper than the priority mail express international option because of the increase in the number of days for delivery and the tracking options.

Typically, postcards, letters, and flat-rate boxes are sent to Canada using the Priority Mail International option. The delivery can take place between six and 10 business days. There is free USPS tracking available, but without the estimated delivery date and specific delivery services. The postage from the U.S. to Canada under this mail option (Retail) starts at $32.65.

The commercial base and commercial plus pricing programs start from $29.66 for packages weighing under 4 lbs. The highest it can go is 73.24 for 20 lbs. For packages sent by weight, pricing depends on the group the country falls into. Canada comes under Price Group 1. The commercial base and commercial plus price starts from $40.91 for 0.5 lbs. to $126.44 for 61 lbs.

Priority Mail International for Flat Rate Envelopes and Boxes

For sending flat-rate envelopes, the postage rate is $30.90. The delivery timeframe and the tracking service are the same as other priority mail international parcels. The flat rate letter postage to Canada drops down to $29.66 for customers availing of pricing under the commercial base and commercial plus programs.

With effect from 24th January 2021, the rate for sending flat-rate envelopes using priority mail international is going to increase to $28.50.

All sizes of flat rate boxes can be sent using the priority mail option with the same delivery time period of between 6 to 10 days. However, the rates for every size are different and depend on the weight.

1. Mailing a small flat-rate box will cost you $32.20, which drops down to $26.50 for the commercial base and commercial plus customers. This postage to Canada will be increasing to $30.68 as per the new rates for 2025. Some accessories, small electronics, and brochures are considered small flat-rate boxes.
2. For all medium-sized flat-rate boxes, the postal charges amount to $61.80. For pricing under the commercial plans, the rate is fixed at $58.06. Things that are considered medium flat-rate boxes are shoes, AV equipment, clothes, office supplies, and small electronics.
3. If you need to send a large flat-rate box, you need to pay the postage of $75.15. The rate for commercial plans is $70.55, again, which is likely to increase. Laptops, board games, and several other large-sized items come under this category.

First Class Mail International

Package/Mail Type	Weight Not Over	Retail Price
Postcard	–	$1.70
Letter	1 oz	$1.70
2 oz	$2.00
3 oz	$2.70
3.5 oz	$3.40
Large Envelope (Flat)	1 oz	$3.15
2 oz	$3.65
3 oz	$4.15

Source: USPS

Letters, postcards, and flats can be sent through the USPS's first-class mail international option. There are certain weight and size guidelines to be followed for mailing letters and postcards. Any item that crosses the size and weight limits (generally 3.5 oz for letters and 15.994 oz for flats) cannot be sent through first-class mail internationally. This mailing option provided by USPS is the most affordable option for both domestic and international mailing.

The US postage rates and postage to Canada under first-class mail are affordable. Marketers commonly use this option for direct mail marketing. The USPS takes around 7 to 21 days to deliver mail through first-class mail internationally.

The rate for sending a postcard or letter is merely around $1.70, which is the cost to buy one Global Forever stamp offered by the USPS for international mailing. Flats are charged $3.15 as they require two such stamps. You can also purchase a stamp booklet to save money.

First-Class Package International

Weight (up to)	Commercial Base	Retail Price
1 oz – 8 oz	$18.48	$19.40
9 oz – 16 oz (1 lb)	$24.69	$26.00
17–32 oz	$27.65	$29.05
33–48 oz	$36.57	$38.50
49–64 oz	$39.59	$47.60

Source: USPS

First-class package international postage rates to Canada offer affordable pricing to mail lightweight packages. However, it is necessary that the package's weight is not more than 4 pounds, and its value does not exceed $400. There is free tracking offered for select countries like Canada.

The first-class package international service also includes electronic delivery confirmation for shipping to select countries.

Under the current 2026 rates, the retail postage to Canada under this mailing service starts at $19.40 for packages up to 8 oz. For commercial base and commercial plus customers, the rate starts at $18.48 for packages weighing up to 8 lbs.

For commercial base and commercial plus customers, the rate starts at $39.59 for packages weighing up to 4 lbs.=

To select from among the various mailing options, you need to determine your package type first. The USPS determines every size and shape of mail differently and categorizes it according to its weight and dimensions.

The mailing option that you select also depends mainly on the delivery time. Most direct mail marketers determine the required timeframe for campaign completion before selecting the type and size of their direct mail. This step is done to be in control of the postage to Canada and the delivery time.

The USPS weighs all your mail items in ounces. They weigh it using a scale at their office. Hence, if you have a kitchen scale, you can weigh your mail beforehand and get an idea of Canada's estimated postage rates.

Airmal M-Bags 

Do you want to send large amounts of printed matter to a single addressee? USPS Airmail M-Bags is the ideal mailing service to post newspapers, magazines, journals, books, catalogs, sheet music, directories, and more. Typically, publishers and students prefer using this service for their printed materials. However, you cannot use this mailing service for merchandise or goods. The delivery speed varies, but USPS generally treats it as airmail. Besides, prices start from $84.92, and each additional point cost $7.72.