How to Ship Frozen Food: Step-by-Step Guide

Have you ever opened a frozen food parcel only to find it half-thawed, soggy, or spoiled? A let-down, right? If you are the sender, this situation can feel even worse – stress on top of stress! Shipping frozen food is not as simple as throwing it in a box with some ice. Without the proper strategy, your carefully packed goods can thaw and spoil before you even get them shipped out of the freezer!

So how can you avoid this? It all comes down to the proper safety protocol on how to ship frozen food. With proper packaging, cooling agents, and shipping methods in place, you can ship frozen items safely, keeping them fresh and just as delicious as the day they came out of the freezer.

In this article, we will discuss all the questions you may have – frozen foods, why they are so popular, the most reliable methods of shipping, and the most straightforward 5-step process that will guarantee your success.

What Are Frozen Foods?

Frozen food is any food that is frozen and kept at very low temperatures to ensure it can remain fresh, safe, and tasty for longer periods of time. When food is frozen, it slows bacterial growth significantly, which means food can be kept safe for days, weeks, or months.

Some examples of frozen products include:

• Meat and poultry (steaks, chicken breast, sausage)
• Seafood (shrimp, salmon, lobster)
• Fruits and vegetables (berries, peas, broccoli)
• Bakery items (bread, cakes, pastries)
• Ready-made meals and frozen snacks
• Desserts (ice cream, popsicles)

Why is this important when you want to ship frozen food? Because every category has different storage and temperature requirements. For example, seafood has to stay rock-solid during transport, but frozen fruits can usually be shipped locally with just gel packs.

Why Frozen Foods Are Used?

Frozen foods offer convenience, are a mainstay of the modern food supply chain, and are a lifesaver for busy families. But what drives individuals and businesses to become so dependent on frozen foods? Here are the main reasons:

1. Longer Shelf Life: By naturally slowing bacteria growth rates, freezing extends the safe storage of food to weeks or even months. This is why businesses that produce frozen foods can ship frozen products literally across states or to another part of the world without worrying about food spoilage.
2. Convenience for Consumer: Frozen foods such as microwavable meals and frozen vegetables for stir fry can make cooking faster and help eliminate the time required for meal preparation.
3. Less Food Waste: Frozen foods do not spoil as quickly, so you can either eat what you purchased or freeze what you’re not ready to eat. Therefore, the amount of food wasted or thrown away will decrease, benefiting both the planet and your family budget.
4. Wider Market Reach: Businesses selling perishable foods are not limited to their local market. By learning how to ship frozen foods safely, and educating their consumers to sustainably purchase from the business, those business can expand their reach to a consumer base that may live in other states or even another country!
5. Nutritional Value: Frozen food items often have the same amount of nutrients, and occasionally, there is more retained of the frozen food compared to “fresh” produce. Although “fresh” produce is generally viewed to be more nutritious, that same fresh item may have been sitting on a fishing boat or truck for some time before being transferred to a local grocery store or farmer’s market.

Methods to Ship Frozen Foods

The success of shipping frozen food depends entirely on the shipping process for your products and the distance. If shipping needlessly thaws your product, it could result in unhappy customers. Below are the most reliable options for sending frozen food.

1. Dry Ice

Dry ice, which is frozen solid carbon dioxide, effectively keeps products well below freezing temperatures. It does not melt into a liquid but rather sublimates into a gas, thus not creating a mess.

Best for: Meat, seafood, and ice cream that must remain rock solid.

Pros: Very cold, long time, lightweight.

Cons: It must be used safely, as carriers have specific regulations and limits on labeling dry ice, and unfortunately, do not allow unlimited quantities for shipping.

2. Gel Packs

Gel packs are reusable bags that contain a non-toxic freeze gel that will stay cold for several hours. Gel packs are not effective at keeping the food frozen solid like dry ice; however, they are effective for shipments if the distance isn’t too long.

Best for: Frozen fruits, baked goods, or foods that can thaw with just a little bit.

Pros: Safe to handle, and there are now eco-friendly options as well.

Cons: Coldness does not last for extremely long periods of time.

3. Insulated Shipping Boxes

Boxes that are lined with either Styrofoam or polyurethane foam are effective at insulating your products and will maintain the temperature of the frozen food. Typically, these insulated shipping boxes are used in conjunction with gel packs or dry ice.

Best for: all frozen food, but especially good for small businesses to ship frozen foods.

4. Chill Shipping (Reefer Trucks or Reefer Containers)

For pallet or wholesale orders, you should opt for refrigerated trucks or sea containers. Although they typically cost more, they are your best bet for a stable cold-chain logistics process.

Best for: Restaurants, distributors, or organizations that ship refrigerated items in bulk quantities.

5. Express & Overnight Shipping

Time is everything when shipping frozen food. The quicker your items arrive at their destination, the less chance there is for them to thaw. Carriers such as USPS, UPS, and FedEx offer express services. However, prices and restrictions often vary; do your due diligence.

Cost Comparison: UPS vs FedEx vs USPS

How to Ship Frozen Food: 5 Steps

If you leave with anything from this guide, let it only be this step-by-step process. Simply follow these five proven steps, and you’ll know exactly how to ship frozen food without worrying about it going bad.

Step 1: Choose the Right Packaging

Safe frozen delivery starts with packaging. The best cooling agent is useless without good insulation.

• Use an insulated foam cooler or a Styrofoam insert inside a strong corrugated cardboard box.
• The cooler should be a minimum of 1.5–2 inches thick to maintain cold temperatures well below freezing.
• For smaller shipments, thermal bubble mailers with gel packs may be adequate, but if traveling for a longer distance, always use heavy-duty insulated boxes.

Pro Tip: Always test your packaging at home. Place frozen food in the packaging along with your cooling agent and inspect the packaging after 24 hours.

Step 2: Select the Appropriate Cooling Agents

When shipping frozen food, cooling agents can be a game-changer. Choosing the incorrect cooling agent can mean either frozen-solid items or melted letdowns.

• Dry Ice → The best agent for meats, seafood, or ice cream, this will keep the items frozen solid, but it must be labeled as “hazardous material.”
• Gel packs → A safer, reusable option, these work great for pretty much any food that just needs to stay cold (baked goods, frozen vegetables).
• Combination Method → Use dry ice and gel packs for longer events – this provides the dead space in the cooler with dry ice, eliminating everything else in the cooler during the long flight.

How Much? Generally, for a medium cooler, you will need 5-10 lbs of dry ice for every 24-hour period.

Important: Don’t put dry ice into an airtight sealed container. It gives off gas. If you have it sealed really tight, it can explode.

Step 3: Insulation and Sealing

A cooling agent will not perform if your box is not sealed properly.

Lining the cooler with freezer paper or plastic wrap will prevent condensation leaks.

Double-bag meat or seafood in vacuum-sealed pouches to keep items fresh as much as possible.

Stuff empty space/reservoirs with crumpled paper or foam peanuts so items do not shift.

Seal the cardboard box with good packing tape ( 2-inch wide tape is recommended).

Pro Tip: To help ensure that it is not mishandled, clearly mark on the box which side should remain upright. Couriers handle dozens of packages a day, so they have numerous opportunities to mishandle the boxes.

Step 4: Courier and Shipping Speed

Time is your enemy when shipping frozen foods. The longer it stays on the road, the higher the risk of thawing.

• An overnight or 2-day shipping option is the best bet.
• USPS Priority Mail Express → The best option for smaller/personal shipments with a limited budget.
• UPS Next Day Air → Great tracking and the most reliable for meat and seafood shipments.
• FedEx Priority Overnight → Professional solutions to ship cold for businesses.

Pro Tip: Always ship at the beginning of the week (Monday-Wednesday). If you ship on Friday, your package may end up stuck in a warehouse over the weekend, causing it to thaw completely.

Step 5: Label, Track & Notify the Recipient

After your package is packed, this final – yet important – step should not be overlooked.

• Label the box “Perishable” and “Keep Frozen.”
• If you packed frozen food with dry ice, you must have a hazard label and the weight of the dry ice (required by law).
• Provide tracking information to your recipient so they can begin planning for receipt.
• If you are shipping on behalf of a business, be sure to also include instructions for handling inside the box for your customer (e.g., “Upon arrival, put items in a freezer”).

Pro Tip: always notify the recipient prior to shipment so that they are prepared – frozen food sitting outside in the sun is a true recipe for disaster!

Quick Recap of the 5 Steps

1. Choose your insulated packaging.
2. Choose your cooling medium (dry ice, gel packs, or both).
3. Carefully seal and insulate your package.
4. Select a courier service with fast delivery.
5. Label, track, and notify the recipient.

By working through these five steps, you will know exactly how to ship frozen food safely. Regardless of whether you are shipping a small package for personal use or bulk food items for business orders, you will still know how to safely ship frozen food.

Final Thoughts

It may seem daunting to ship frozen food, but it boils down to preparation and planning. With some thought into how you will package your food, what cooling agents to use, and which courier to partner with, you can ship frozen goods with confidence that they will arrive fresh, safe, and ready to eat.

Also, frozen food itself matters as much as frozen food methodology. Ice cream that requires dry ice and overnight shipping would be very different (and expensive) than shipping frozen baked goods that may only require gel packs with express shipping. When you know your food product, it will make the shipping process easier.

Ultimately, being able to ship frozen food will help you to grow your business, understand your customers, and avoid expensive decisions/deadlines. Whether you ship across town or around the country, these five steps will help you ship frozen food correctly every time.

FAQs on Shipping Frozen Food