How Much Does it Cost to Send A Letter Overnight

The cost of mailing an overnight letter or parcel depends on various factors, such as the shipping carrier, mail dimensions, mail weight, distance between origin and destination, etc. USPS, UPS, and FedEx are the primary postal carriers operating in the US.

Even though some overnight shipping services provide guaranteed delivery, sometimes they still may not deliver your mail to the right destination. Unforeseen conditions like weather conditions, demand surges, and the unavailability of workers could hamper the delivery. It is never recommended to rely on express shipping at all times. This option is only reliable during emergencies to ensure timely deliveries.

In this blog, we will discuss all your one-day shipping options with USPS, UPS, and FedEx to help you make a sound decision. Moreover, we will also learn about their rates to give you an idea of how much an overnight letter costs. Let’s begin!

💡 Also Read: Fastest Way to Mail a Letter

As the name implies, overnight mail travels toward the destination overnight and gets delivered the following business day. Make sure you aren’t mailing one day before a federal holiday or on weekends, making the task impossible.

However, some overnight shipping options allow you to pay an extra fee for Saturday or Sunday deliveries.

But, there’s another condition for mailers to overnight a letter—they need to post their mailpieces before the cut-off times. These timeframes are different for every carrier, and we will get back to them in a little bit!

Please note that it is hard to deliver your mail items the next day if you post them too late. In such cases, it takes the carrier at least two working days to get them to the delivery address.

Also, your letters and parcels may or may not be eligible for overnight delivery; it depends on your mailing address and mailpiece type. For example, it is often impossible to complete one-day deliveries while mailing to rural areas. But, you can send items from one metropolitan area to another hassle-free.

Several overnight mailing services offer guaranteed delivery times, like arrival by 10 am, 12 pm, 4.30 pm, or so on. If the carrier does not keep up with its commitments, you can claim a full refund.

💡 Also Read: Overnight Mail: Guide to Sending Overnight Mails

USPS, FedEx, and UPS Overnight Shipping: Quick Comparison

You can refer to this price comparison table to get a better idea about the overnight shipping options by these postal carriers. 

Please note: The prices mentioned below are for a standard letter-sized envelope weighing around 0.5 lbs. Besides, the rates will be different for heavier packages, or specific zones will vary. 

Source: USPS, FedEx, UPS 

Disclaimer: We don’t set the shipping rates; they depend on the postal carrier. So, time-to-time, there could be fluctuations in the pricing. 

The cost to mail a letter overnight depends upon several factors relating to your mailpiece and destination. Luckily, you have many options to choose from according to your needs and budget.

Before discussing the overnight letter cost at UPS, let’s discuss the aspects affecting it. Here, we have mentioned the key factors that you should take into consideration:

Shipping Carrier

The carrier you select makes a massive difference to your costs and delivery timeframes. Some carriers can deliver your mail in the early morning, whereas others might take the whole day and deliver it by late evening.

Thus, try talking to your mail carrier before deciding to send anything through it. Check out all your options and their corresponding rates to make an informed decision.

Your three main options for overnighting your envelopes and packages in the United States are:

• USPS
• UPS
• FedEx

Mail Dimensions

As mentioned earlier, some of your mail items might be ineligible for overnight shipping. Thus, you need to send them through other options available.

Take care to learn the prescribed mail dimensions beforehand and select a carrier that enables you to send your items smoothly.

Mail Weight

Weight is one of the most crucial factors to consider while sending mailpieces overnight. Like dimensions, every carrier also has weight restrictions that mailers need to follow.

Most overnight shipping carriers use air transportation to get your mail to its destination quickly. But, some items are too heavy for air transport and hence, aren’t eligible for overnight delivery. However, the carrier may agree to send your mail if they have enough space in the cargo bay.

Also, remember that letters or parcels that weigh more cost much more than lightweight items.

Distance Between Origin and Destination

Usually, the more the shipping distance, the more your shipping rates. Both these factors are directly proportional to one another.

Also, the carrier might not be able to offer overnight delivery while mailing to remote or weather-challenged areas.

💡 Also Read: How Long Does Regular Mail Take from State to State?

The process of sending an overnight letter is not very different from sending other mail. Mailers only need to take care of the cut-off times and select the appropriate mailing option that assures overnight delivery.

Below, we will discuss the three significant overnight mailing options available for you:

USPS Priority Mail Express for Overnight Shipping 

The USPS offers overnight shipping in the form of its Priority Mail Express service. This option provides mailers with next-day to two-business-day days mailing. It is available 24 x 7 on all days of the year.

You can request holiday and Sunday deliveries for an additional fee. If the shipping distance is less, the USPS completes the delivery on the following day. Otherwise, it delivers your mail on the second business day before 6 pm.

This USPS service comes with a money-back guarantee, so you can request a refund if your mail does not arrive on time. Plus, you get several more features, and they are:

• Free Package Pickup from your office or home address: You don’t need to drop off your packages in a mailbox or book them at the Post Office. A USPS carrier comes to your doorstep to collect the package on request on any day you want.
• Free USPS tracking: It helps mailers track their items in real time, which is particularly crucial while using overnight delivery services. USPS tracking assures them that their mail delivery is lined up and will be completed promptly.
• $100 insurance coverage: Mailers get an insurance cover of up to $100 on most shipments. Hence, they can mail valuable items without worrying about their cost.
• Free Saturday delivery: While other carriers charge an extra fee for Saturday deliveries, too, the USPS offers it for free. Hence, you can mail something on a Friday and get it delivered by Saturday.
• Proof of delivery: The USPS provides proof of delivery in the form of signature records to mailers if requested at the time of posting.

Priority Mail Express allows you to mail Flat Rate Envelopes at flat-rate pricing. Hence, using this option enables you to avail yourself of flat USPS overnight letter and document costs that aren’t based on weight or distance.

The price remains the same whether you are sending legal documents or heavy manuscripts. So, the only condition is that they must fit within the specific Flat Rate Envelope. However, Flat Rate boxes are unavailable for overnight Express shipping. You can only use them with standard Priority Mail (two to three-day delivery). For these boxes, the postage will depend on the weight and distance.

It costs the same irrespective of whether you are stuffing items weighing 20 lbs or 50 lbs in a Flat Rate Box. Plus, you can mail it anywhere in the US at the same price.

However, mailers should make sure that their items are under the USPS maximum weight and size limits. They can only mail letters and packages weighing up to 70 lbs.

The maximum combined girth and length is 108” (girth refers to the distance around the thickest part of an item). Also, note that the flaps of your shipping box or Flat Rate Envelope must close within their normal folds while sealing.

Below are the USPS overnight shipping costs (in case you don’t want to use Express flat-rate packaging):

Source: USPS 

*Last Updated on January, 2026

Sunday and holiday deliveries cost you an extra $12.50.

The cost to overnight a letter via the Post Office using flat-rate pricing starts at $30.25. Mailers can purchase a Flat Rate envelope measuring 12.5” x 9.5” at this price. Legal Flat Rate and Padded Flat Rate envelopes cost $33.50 and $34.15, respectively.

Undoubtedly, the cost to overnight a letter through USPS is one of the lowest prices for overnight mail. Furthermore, the flat-rate pricing system makes it even more cost-effective to send items via Priority Mail Express.

UPS Overnight Shipping Options

Like the USPS, United Parcel Services (UPS) also offers an overnight delivery option to mail to most US states and territories by the next business day. The service is known as UPS Next Day Air.

There are two other options within this service, depending on the arrival time of your mailpieces. Naturally, the cost of a UPS overnight letter for every option varies considerably according to its mailing speed.

UPS Next Day Air Early

The most expensive option is UPS Next Day Air Early. It guarantees delivery between 8 a.m. and 9:30 a.m. on the following working day. You need to post your packages before the UPS drop-off times for express shipping.

UPS offers a money-back guarantee if your items aren’t delivered on time. Also, it provides free UPS packaging to help mailers make their items ready to mail.

Please note that UPS provides mail delivery by 8 am only for major cities. The timeframe of 8.30 a.m. to 9.30 a.m. is allotted to shipments heading to other US cities, like Anchorage, Alaska.

Find below the Next Day Air Early UPS overnight letter costs for different zones:

Source: UPS 

*Last Updated on January, 2026

These early-morning delivery rates for packages can rise depending on your mail weight. Take care to ask the carrier- how overnight letters work to understand it's working in detail.

UPS Next Day Air

If you are not in a hurry, you can avail of the UPS Next Day Air option. The UPS workers deliver items between 10.30 am to 12 pm under this service. Optional pickup service and Saturday delivery are also available for mailers.

Below are the UPS Next Day Air rates

Source: UPS 

*Last Updated on January, 2026

Note: Zone 124 consists of metro Hawaii and Alaska, and Puerto Rico comes under Zone 125. UPS guarantees next-day shipping to these places, but not for zone 126, which consists of remote Hawaiian locations.

UPS Next Day Air Saver

It is the most affordable UPS overnight mailing option and ensures delivery between 3 pm and 4.30 pm. However, shipments going to residential addresses arrive by the end of the day and not at the prescribed time.

This service guarantees next-day shipping to 48 contiguous US states and a few locations in Hawaii and Alaska.

UPS Next Day Air Saver is an ideal option if you aren’t concerned about the delivery time. Here are the rates for different zones under this service:

Source: UPS 

*Last Updated on January, 2026

 Also Read: How Long Do Letters Take to Mail to Another State

FedEx

FedEx stands for Federal Express and is known for its trackable and efficient shipping services. It also offers overnight shipping that helps mailers send time-bound mailpieces without any issues.

FedEx’s overnight delivery service is called FedEx Overnight and enables you to select from three options:

• FedEx First Overnight: It is also known as the early-morning delivery service. FedEx assures item delivery between 8 a.m. and 9.30 a.m. to most destinations. However, delivery to other locations can take up to 2 p.m. These are the prices for different package weights and zones:
  

  Weight	Zone 2	Zone 3	Zone 4	Zone 5	Zone 6	Zone 7	Zone 8	Zone 9–10
  Envelope	$68.27	$75.55	$87.14	$91.09	$92.30	$98.85	$101.96	$116.09
  1 lb	$76.22	$98.03	$116.63	$125.68	$130.68	$141.55	$144.48	$161.21
  5 lbs	$86.00	$108.54	$151.37	$159.37	$164.09	$182.06	$186.88	$219.54
  10 lbs	$96.00	$124.56	$182.83	$197.56	$205.38	$225.47	$232.47	$288.65
  20 lbs	$123.26	$165.03	$266.16	$292.82	$298.36	$322.42	$328.86	$411.94
  40 lbs	$168.88	$230.67	$425.46	$452.52	$468.34	$505.02	$514.51	$603.07
  50 lbs	$199.94	$275.26	$476.61	$519.42	$534.06	$573.94	$604.56	$706.23
  60 lbs	$243.68	$345.74	$582.31	$617.16	$634.18	$718.17	$731.94	$862.67
  70 lbs	$279.86	$404.45	$653.02	$698.83	$712.21	$789.13	$834.05	$967.03

  Source: FedEx

  *Last Updated on January, 2026

• FedEx Priority Overnight: Under this option, commercial deliveries are completed by 10.30 on the subsequent business day. However, FedEx delivers residential mail by noon and rural mail by 4.30 pm. Here are the prices:
  

  Weight	Zone 2	Zone 3	Zone 4	Zone 5	Zone 6	Zone 7	Zone 8	Zone 9–10
  Envelope	$37.27	$44.55	$56.14	$60.09	$61.30	$67.85	$70.96	$85.09
  1 lb	$45.22	$67.03	$85.63	$94.68	$99.68	$110.55	$113.48	$130.21
  5 lbs	$55.00	$77.54	$120.37	$128.37	$133.09	$151.06	$155.88	$188.54
  10 lbs	$65.00	$93.56	$151.83	$166.56	$174.38	$194.47	$201.47	$257.65
  20 lbs	$92.26	$134.03	$235.16	$261.82	$267.36	$291.42	$297.86	$380.94
  40 lbs	$137.88	$199.67	$394.46	$421.52	$437.34	$474.02	$483.51	$572.07
  50 lbs	$168.94	$244.26	$445.61	$488.42	$503.06	$542.94	$573.56	$675.23
  60 lbs	$212.68	$314.74	$551.31	$586.16	$603.18	$687.17	$700.94	$831.67
  70 lbs	$248.86	$373.45	$622.02	$667.83	$681.21	$758.13	$803.05	$936.03

  Source: FedEx

  *Last Updated on January, 2026

• FedEx Standard Overnight: FedEx guarantees delivery by 4.30 p.m. to commercial addresses and 8 p.m. to commercial addresses and 8 pm to residential addresses. The FedEx overnight letter cost for using this service is the lowest as compared to other options.

Mailers can ship packages weighing up to 150 lbs using any of these overnight delivery services. But, FedEx can deliver your mail only between Monday and Friday.

Here are the prices:

Source: FedEx

*Last Updated on January, 2026

Undoubtedly, the cost to send FedEx overnight letters is far more expensive than USPS and UPS. Hence, don’t forget to compare prices beforehand and select an option best suited to your requirements.

You may check out the overnight letter cost with DHL for overnight shipping to international destinations. But, please note the rates for international overnight mailing can be expensive.

 Also Read: Best 37 Corporate Gifting Companies to Send Physical Gifts

Even though some overnight shipping services offer guaranteed delivery, they might not be able to deliver your mail the next day sometimes. It could happen due to various reasons, like weather conditions, demand surge, non-availability of workers, etc.

The word ‘guaranteed’ assures the mailers of a refund if their item is not delivered on time. However, it happens rarely, and you can mail using overnight delivery options confidently.

We highly recommend you avoid relying on express shipping at all times. Try using it for emergencies only so that you save costs and assure timely deliveries.

If overnight shipping is costly, why don’t people use emails instead? Well, sending something by direct mail has its own advantages, like:

• Safe for sending confidential documents: Some people find snail mail more secure than email, especially for sending private and confidential documents such as
  • Court papers
  • Business contracts
  • Account statements
  • Bills or invoices
  • Tax forms, etc.
• Offers a personal feel: As compared to email, direct mail creates a nostalgic effect and adds a personal touch to your communications. Most companies prefer sending recommendation letters, customer onboarding letters, etc., through offline mail.
• Direct mail gets more attention: Today, recipients tend to delete emails even without reading them because they are bombarded with them all day. On the contrary, direct mail gets more attention from recipients as it is given more importance by people.

Also, sometimes, it is necessary to send some items by mail instead of email. For example, some gyms and publications allow their members to cancel memberships/subscriptions only by sending forms via direct mail marketing.

Several mailers use snail mail actively to send out their marketing and transactional items for these reasons. They can use low-cost mailing options by USPS, FedEx, etc., for sending regular items.

But, overnight shipping allows them to deliver mailpieces that are time-sensitive and urgent in nature. As said above, it is advisable to use next-day mailing services only if necessary.

However, sending mail takes a lot of time and effort. Mailers need to draft and print items on their home or office printer. In addition, they need to stuff them in envelopes and affix the right postage.

But, you can choose to automate everything instead to save costs, time, and manual effort. PostGrid’s print and mail API allows you to create and print mail items in only two business days.

💡 Also Read: Direct Mail Automation Software

Overnight Shipping Comparison at a Glance: USPS vs UPS vs FedEx

Overnight Mailing Considerations for Major Carriers

USPS

1. Not all destinations qualify for overnight delivery. To confirm overnight eligibility, use the USPS Service Commitments Tool or check with your local post office.
2. Drop off your shipment before mid-afternoon or schedule a timely USPS pickup to guarantee next-day arrival.
3. Use USPS-approved flat-rate envelopes or boxes to save money, simplify labeling, and ensure your insurance does not get canceled.

UPS

1. Ship your package between 3 p.m. and 6 p.m., before the UPS cutoff. Check with your nearest UPS drop-off point for exact deadlines.
2. Money-back guarantees are subject to exclusions. You may not receive a refund if there were weather-related delays or if the address provided was incomplete or incorrect.
3. Any damage resulting from poor packaging may lead to an insurance claim being denied. We recommend using UPS-supplied packaging material to prevent future disputes and following their instructions.

FedEX

1. They may suspend the guarantee during peak periods or in the event of force majeure conditions. We recommend checking the service alerts or contract terms before shipping.
2. Certain items, such as jewelry, antiques, and art, typically have a $1,000 insurance coverage limit.
3. Saturday delivery service is only eligible for specific ZIP codes. We advise checking with your local FedEx office to see if your package's destination qualifies.

Many mailers wonder how much to overnight a mail item and ways to lower shipping costs. Luckily, there are several ways to keep your overnight shipping rates.

Cut Down the Weight

For starters, you can keep your item weight as low as possible, as it significantly affects your overnight letter cost with FedEx. Moreover, try using lightweight packaging to avoid adding extra weight to your mailpieces.

Use Standard Dimensions

You can also look into the item’s dimensions apart from the weight. Oddly-shaped, rectangular, or large-sized items cost way more than small, regular-shaped ones.

But, often, it is impossible to reduce the mail item’s weight beyond a specific limit. Also, you may have difficulty managing its size.

Consider the Timings

Another thing that mailers can do is determine the exact time when they want their envelope or parcel to arrive at its destination. If they don’t need the carrier to deliver it during the mornings, say by 9.30 a.m. or 11 a.m., they can select options that drop off items by evening around 4 pm.

Consider Early-Evening Deliveries 

As discussed above, late afternoon or early-evening deliveries are cheaper than early-morning deliveries. Thus, senders can save a lot of shipping charges by selecting an option that does not guarantee early-morning delivery. This way, you can avail of fast shipping, but at lower rates.

Print Your Own Labels

Also, it would be helpful if you printed your own shipping labels. Perhaps, you can set up an account with your service provider and get discounts.

Use Flat-Rate Boxes

Another way to cut down on overnight letter costs is by using flat-rate boxes and envelopes whenever you can. Using this method, you need not worry about the mail weight if it fits inside the envelope or box.

If you want to reduce costs even further and mail efficiently, PostGrid’s direct mail API can help you. It allows you to design, print, mail, and track items at all-inclusive rates suitable for the types and sizes of companies.

Below is a list of PostGrid’s features that will give you an idea of how it can revolutionize your offline mailings:

• Address verification: Compile targeted mailing lists and verify your delivery addresses to avoid lost mail and delays.
• Zapier integration: Connect with over 1,600 apps through Zapier integration and expand your database.
• HTML templates: PostGrid offers several professionally built templates to help mailers design their mailpieces and customize them according to their needs.
• Per-piece tracking: View the delivery status of all your sent mailpieces in real time.
• Campaign insights: Get periodic campaign reports and analytics to measure performance and improve future campaigns.

How Can Businesses Automate Their Overnight Mailing Process? 

Businesses often manage high-volume and time-sensitive mail. It becomes harder to manually process them and hand them over to the postal carriers on time to receive the fastest delivery. You can automate this process with PostGrid’s Print & Mail API. 

 It allows you to design, print, mail, and track items at all-inclusive rates suitable for the types and sizes of companies. Our API could be your best companion to ensure every overnight invoice, letter, compliance notice, or legal document gets routed instantly. So, you can bypass the retail counter while we do the heavy lifting for you.

The overnight letter costs for mailing via different carriers vary significantly. These rates depend on your mailing destination, weight, size, and additional services.

You can keep your costs under control by taking a few steps, like selecting late-afternoon delivery options and using flat-rate boxes.

PostGrid’s direct mail services allow you to create, print, and mail affordably, speedily, and efficiently. If you want to automate your offline mailing activities and avail the lowest rates possible, PostGrid is your best choice.

Sign up now to see how we help businesses reduce their overnight mail costs!