10 Best Thermos Food Flasks For Hot Food in The UK

Last updated on 16/08/2025

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Heemburg Thermal Food flask Lunch Container, Insulated Jar, Stainless Steel Thermo Lunchbox for Meals, Soup, Fruit, for Office and Outdoor Use. (Black, 2L)

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Why We Love It

Portable and ergonomic.
Exceptional material quality.
Leak-proof design.

Main Highlights

✅ Convenient for transport thanks to compact design and ergonomic handle for carrying.
✅ High-quality material of outstanding quality, odourless, stainless steel 18/8, double-walled vacuum insulated. Food is kept warm for up to 6 hours. All raw materials tested before processing and confirmed as safe.
✅ Leak-proof, screw cap closes the pot securely and firmly. No leaks. No odour penetrates to the outside.
✅ Premium design: the thermal container comes in the usual elegant Heemburg design. Classic, elegant and minimalist. The powder-coated matte outer surface feels comfortable and smooth.

Chilly's Food Pot - Leak-Proof, Premium Stainless Steel Reusable Food Container - Double-Walled Insulated for Hot or Cold Lunch Storage - Black - 300ml

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Why We Love It

Keeps food hot/cold longer.
Leak-proof airtight screw top.
Durable, BPA-free stainless steel.

Main Highlights

UP TO 6 HOURS HOT: Hot, comforting food for up to 6 hours in 500ml and 4 hours in 300ml, regardless of the outside temperature. With no need to be near an oven or microwave, enjoy your favourite hot food wherever you are.
UP TO 6 HOURS COLD: Keep your cold food crisp and fresh for up to 6 hours in 500ml and 5 hours in 300ml. Perfect for sunny days out at the park or on the beach. No need for a separate cool bag, just grab your pot and go!
DRY, LEAK PROOF, SWEAT PROOF: Our airtight screw top lid prevents soaked bags and accidental spills. The vacuum insulation means your Chilly’s Food Pot will remain condensation free.
SAFE, QUALITY MATERIALS, BPA FREE: Chilly’s Food Pots are constructed from durable, high-grade 304 stainless steel, for both the inside and outside walls. This preserves the flavour and freshness of your food without any tainting.
TAKE IT EVERYWHERE: The Chilly's Food Pot has a revolutionary design that is lightweight & compact. Perfect for hiking, storing snacks to keep you going at the gym, traveling, long transport, school & work.

Stanley Classic Legendary Food Jar 0.4L With Spork - Keeps Cold For 7 Hours - BPA-Free Stainless Steel Soup Flask - Leakproof - Dishwasher Safe - Hammertone Green

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Why We Love It

Keeps meals temperate.
Durable, safe materials.
Leak-proof and multipurpose.

Main Highlights

KEEPS HOT OR COLD + INTEGRATED SPORK: The compact Stanley food flask with spork keeps food hot or cold for 7 hours. It features a leak-resistant lid with a pressure-release valve for easy opening and a wide mouth for filling, pouring, and cleaning.
SUSTAINABILITY AT STANLEY: We believe in creating a more sustainable world through our Built For Life promise and century-old brand. Stanley looks to eliminate the need for single-use disposables and increase recycled content materials every year.
LEAK PROOF LID: This Stanley food thermal flask features a leak-resistant lid, allowing you to pack it in your backpack without spills. It also includes a stainless steel spork that fits securely in the attached bracket.
DISHWASHER SAFE: The wide mouth opening of the food flasks for hot food makes filling, pouring, and cleaning easy. Every piece of this stainless steel food flask is dishwasher safe.
BUILT FOR LIFE: 'Built for Life' has been the Stanley promise since 1913, manufacturing rugged, high-performance products that last a lifetime.

Thermos Stainless King Food Flask, 470ml Capacity - Sleek Multi- Purpose Flask for Daily Food Prep - Durable Stainless Steel with Classic Red Finish - Ideal for On-the-Go Meals & Drinks

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Why We Love It

Keeps food hot or cold.
Durable stainless steel design.
Includes spoon and bowl lid.

Main Highlights

Thermos Vacuum Insulation: Advanced technology in this thermos food jar keeps your meals hot for 14 hours or cold for 24, ensuring ideal temperature for various activities
Durable Construction: This insulated food container features robust stainless steel interior and exterior that withstand daily use and maintain temperature control
Versatile Lid Design: Insulated lid of this thermos food container doubles as a convenient bowl, reducing the need for extra dishes and making it easy to enjoy your meals anywhere, anytime
Temperature Control: This lunch thermos remains cool to touch with hot contents and sweat-proof with cold, providing safe handling and preventing messy condensation on surfaces
User-Friendly Features: This insulated food jar's wide mouth design allows for easy filling, eating, and cleaning, making it a practical choice for daily meal prep and on-the-go dining

Thermos Stainless King Food Flask, 710ml Capacity - Sleek Multi- Purpose Flask for Daily Food Prep - Durable Stainless Steel with Red Finish - Ideal for On-the-Go Meals & Drinks

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Why We Love It

Exceptional temperature retention capabilities.
Robust stainless steel construction.
Lid serves as bowl.

Main Highlights

Thermos Vacuum Insulation: Advanced technology in this thermos food jar keeps your meals hot for 14 hours or cold for 24, ensuring ideal temperature for various activities
Durable Construction: This insulated food container features robust stainless steel interior and exterior that withstand daily use and maintain temperature control
Versatile Lid Design: Insulated lid of this thermos food container doubles as a convenient bowl, reducing the need for extra dishes and making it easy to enjoy your meals anywhere, anytime
Temperature Control: This lunch thermos remains cool to touch with hot contents and sweat-proof with cold, providing safe handling and preventing messy condensation on surfaces
User-Friendly Features: This insulated food jar's wide mouth design allows for easy filling, eating, and cleaning, making it a practical choice for daily meal prep and on-the-go dining

Dreamhigh® Thermal Food Flask, 800ml, Soup Flask with Spoon, Stainless Steel Vacuum Insulated Food Container, Leak-Proof, with Carrying Bag, Keep Hot/Cold for 12 Hours (Black)

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Why We Love It

Optimal temperature retention.
Food-safe, non-toxic materials.
Leak-proof and non-slip.

Main Highlights

Keep food warm or cold: Dreamhigh vacuum insulation technology for maximum temperature retention of hot or cold food. Delicious and weather-independent. Keeps hot for up to 12 hours and cold for up to 12 hours.
Food-safe material: the interior is made of 316 food-safe stainless steel and the exterior is 304 stainless steel, BPA-free, PVC-free, non-toxic. High-quality materials ensure product safety and food health.
Satisfy all your needs: you can use these insulated lunch containers to keep food warm and cold, such as fried rice, soup, pasta, salad, fruit, vegetables or even nuts. Please enjoy your healthy fresh food at school or in the office even outdoors.
Satisfy all your needs: you can use these insulated lunch containers to keep food warm and cold, such as fried rice, soup, pasta, salad, fruit, vegetables or even nuts. Please enjoy your healthy fresh food at school or in the office even outdoors.
Non-slip and easy to clean: the bottom of the food container has a non-slip design to avoid falling on the floor and causing burns on the body; easy to fill, wide opening that is easy to clean. (Do not put in the microwave)

GOOD FOR YOU - Thermal Food flasks for hot food, Soup containers, ideal as a thermal lunch box, soup flask or food warmer lunch box - Stainless Steel insulated hot food flask - Orange

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Why We Love It

Maintains food temperature excellently.
Convenient for on-the-go meals.
Guarantees safe daily use.

Main Highlights

✔ MAINTAINS FOOD TEMPERATURE - Keep those soups hot and those juices cold for longer time periods. This thermal food storage jar can keep food warm for up to 9 hours or cold for 16 to 24 hours.
✔ ENJOY YOUR MEAL ANYWHERE - The food jar's lid serves as a bowl that you can use for enjoying your pasta, soups, cereals, or salads. The lid also features a compartment that houses a foldable spoon.
✔ NO LEAKING OR SWEATING - The lid screws on tightly to prevent liquid from dripping or leaking even while you are in transit. Double wall insulation prevents condensation and sweating.
✔ CREATE A VARIETY OF DISHES - Included in the package is a downloadable e-book, which features a variety of food thermal Food Flask recipes for creating delicious hot and cold meals that you will love.
✔ SAFE FOR DAILY USE - Your health is always our number 1 priority. This insulated food container does not contain any BPA, phthalates, lead, or PVC material that can be harmful to the body.

WayEee Food Flask, Food Flask for Hot Food Stainless Steel Food Jar with Folding Spoon-450ml (Blue)

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Why We Love It

Keeps temperature for hours.
Includes folding meal spoon.
Features release air button.

Main Highlights

✔【Double Insulated Stainless Steel Design】Durable stainless steel interior designs for keeping hot and cold for 6-8 hours. Double vacuum inner design make the food and soup in the food flask insulate from outside temperature completely.
✔【Folding meal Spoon Free】The external lid is made up of food grade material. It can be used for hold soup and food. The internal lid comes with a stainless steel folding spoon.
✔【Release Air Button】An air hole is designed under the folding spoon in the internal lid. The gas pressure will grow when the temperate is different between inside and outside. At the same time, the food flask may not be open easily. Just push the air hole button, all problems are solved.
✔【Leakproof and Easy to Clean】Extra wide mouth and 450ml capacity. Seamless welding food jar can hold any food or soup without leakiness. The size of it fits for children's lunch and adults' meals.
✔【Great After Sale Service】WayEee provides a after sale service on food flask for quality issues. Any problems you would like to solve or any questions you want to ask, please don't hesitate to contact us.

Thermos - Blue Kids Food Flask (290ml) - BPA Free, Stainless Steel, Spill Proof, Thermal Flask for Lunch Box, 5 Hours Hot & 7 Hours Cold

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Why We Love It

Long-lasting stainless steel design.
Convenient wide mouth opening.
Superior temperature retention technology.

Main Highlights

Keeps Food Just Right: Double-wall vacuum insulation keeps your child’s lunch hot for up to 5 hours or cold for 7 hours, so their meal stays fresh and at the perfect temperature all day long.
Built to Last: Made with tough, high-quality stainless steel inside and out, this flask can handle drops, spills, and everyday use. Plus, it stays cool to the touch even with hot food inside, and won’t sweat when filled with cold treats.
Hassle-Free Cleanup: The wide mouth makes it easy to fill, eat from, and clean, saving you time in the morning and making after-school cleanup a breeze.
Trusted Thermos Quality: Crafted with the legendary Thermos performance you can count on, this flask is lunchtime ready and backed by a 5-year guarantee, ensuring long-lasting reliability for years of school lunches.

520ml Insulated Food Flasks For Hot Food – Double-Wall Stainless Steel Hot Food Flask With Spoon – Thermal Lunch Box keeps Meals Drinks Hot or Cold for 6 Hours – Leakproof Soup Containers (Eucalyptus)

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Why We Love It

Larger, more satisfying portions.
Keeps food hot longer.
No spills or leaks.

Main Highlights

Upgraded 520ml Capacity Soup Flask: Polar Gear's thermal food container now offers a larger 520ml capacity, providing more space for your favourite hot or cold meals, perfect for longer trips or more satisfying portions, ensuring you stay nourished and energized throughout the day.
Up To 6 Hours Hot Or Cold: Our insulated food container ensures food stays piping hot for up to 6 hours - perfect for hot pot recipes. For best results, simply pre-heat the thermal food flask before use by adding hot water 5 minutes before use. Need your food to stay nice and cold? Pre-cool with ice-cold water - it'll stay cool up to 6 hours. Just pour out the hot or cold water and the double-layered stainless steel will do the rest, so your food or drink stays the perfect temperature.
Zero Spills, Leaks Or Condensation: Thanks to the extra thick double-walled insulation, forget condensation, heat transfer or sweating of your food on the outside of your insulated food jars. Your insulated food flask will stay at room temperature on the outside and the perfect temp inside, so no burning or freezing your fingers when holding. The vacuum flasks also have a leakproof screw lid so as long as it’s closed properly, no matter how bumpy the road is, there’ll be no sticky mess or stains!
Soup Made Simple: No more losing cutlery from home, our compact soup container comes with a durable PP spoon which is cleverly held by the silicone band around the hot food containers. If you don’t need the spoon, the hot food lunch box has an extra wide mouth so you can sip away without making a mess. The non-slip silicone band also allows for easy opening and extra grip, so forget spilling food or drink when on the go!
Economical 2-In-1 Flask For Hot & Cold Food Or Drinks: Whether you want food or drink on the go, our thermal lunch box for hot food does it all, eliminating the need for several drink and food containers as well as reducing single-use plastic packaging. Help the environment by saying no to one-use plastics and go for reusable multi-purpose items like our 304-grade, food and drink-safe hot lunch box. Helping the planet has never been so easy… or so sleek!
Hand wash only, not dishwasher safe. Contents will remain very hot, take extra care if consuming hot food directly from the flask.

8.7

Excellent

We scanned 1617 products

We reviewed these offers relevant to the Thermos Food Flasks For Hot Food within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Heemburg, Chilly's, STANLEY, Thermos, Dreamhigh, GOOD FOR YOU, WayEee, Polar Gear, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Thermos Food Flasks For Hot Food in the market, we considered we took a deep dive into 8086 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Heemburg Thermal Food flask Lunch Container, Insulated Jar, Stainless Steel Thermo Lunchbox for Meals, Soup, Fruit, for Office and Outdoor Use. (Black, 2L). We love many things about this product by Heemburg. What sets it apart from the competition is Portable and ergonomic, Exceptional material quality, Leak-proof design.
The best value product for most shoppers and where user satisfaction is continuously the highest is Chilly's Food Pot - Leak-Proof, Premium Stainless Steel Reusable Food Container - Double-Walled Insulated for Hot or Cold Lunch Storage - Black - 300ml by Chilly's based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Thermos Food Flasks For Hot Food and the best cost-to-value ratio is Stanley Classic Legendary Food Jar 0.4L With Spork - Keeps Cold For 7 Hours - BPA-Free Stainless Steel Soup Flask - Leakproof - Dishwasher Safe - Hammertone Greenat STANLEY with a 21% discount.
Our list of the best Thermos Food Flasks For Hot Food is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Thermos Food Flasks For Hot Food in The UK

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We scanned 1617 products

We concluded that: