Amazon Thermos Flask Price October 2026: Rs. 54 to Rs. 206 per 100 ml
Thirty insulated steel flasks read on 5 October. Priced per 100 ml rather than per bottle, the order on the shelf turns almost completely over.
Insulated flasks are one of the few shelves where the unit is printed on every listing, so the arithmetic is available to anyone who does it. Across the 16 flasks seated from this read, the price per 100 ml of stated capacity runs from Rs. 53.90 to Rs. 206.43 - a 3.83-fold spread. The flask with the highest sticker price on the page, a 2-litre at Rs. 1,609, is the fourth cheapest by volume; the 280 ml bottle at Rs. 578 is the dearest thing here. Five listings state 1 litre and span Rs. 539 to Rs. 997.
Every price below was pulled from Amazon on October 5, 2026 and checked against the MRP on the listing. Stack them with the live codes on our Amazon coupons page, which the deals desk re-verifies daily.
Jump to a pick
- Rs. 53.90 per 100 ml — the cheapest volume on the page — Rs. 53.90/100ml
- Rs. 54.00 per 100 ml — half the capacity, the same rate — Rs. 54.00/100ml
- Rs. 75.87 per 100 ml — and it is a mug, not a flask — Rs. 75.87/100ml
- Rs. 80.45 per 100 ml — the largest flask here, 2 litres — Rs. 80.45, 2 litres
- Rs. 81.90 per 100 ml — 1 litre, 4,070 ratings — Rs. 81.90/100ml
- A stated Rs. 14,300 MRP — on a Rs. 429 flask — Rs. 14,300 stated MRP
- Rs. 86.90 per 100 ml — 1 litre, triple wall stated — Rs. 86.90/100ml
- Rs. 97.20 per 100 ml — a 750 ml sipper — Rs. 97.20/100ml
- Rs. 97.50 per 100 ml — 1 litre, on 5 ratings — Rs. 97.50, 5 ratings
- Rs. 99.70 per 100 ml — 14,087 ratings, the top of the litre group — Rs. 99.70, 14,087
- Rs. 101.33 per 100 ml — the 300 ml band begins — Rs. 101.33/100ml
- Rs. 116.00 per 100 ml — 300 ml at Rs. 348 — Rs. 116.00/100ml
- Rs. 120.00 per 100 ml — 800 ml, and 10,573 ratings — Rs. 120.00/100ml
- 152,820 ratings — and the fourth dearest rate here — 152,820 ratings
- Rs. 166.33 per 100 ml — 300 ml at Rs. 499 — Rs. 166.33/100ml
- Rs. 206.43 per 100 ml — the dearest volume on the page — Rs. 206.43, dearest
16 Flasks, Rs. 53.90 to Rs. 206.43 per 100 ml
Under Rs. 100 A Hundred Millilitres: The Big Flasks
Six listings from 500 ml to 2 litres, priced Rs. 53.90 to Rs. 97.20 per 100 ml - including the 2-litre flask with the highest sticker price on the page and one listing stating a Rs. 14,300 MRP.
1000ml Hot & Cold Water Bottle | Vacuum Insulated Stainless Steel Thermos Flask 1 Litre |
An unbranded 1-litre vacuum insulated steel flask at Rs. 539.
Why it earned its spot The lowest price per 100 ml of stated capacity in this read.
MR Double Wall Stainless Steel Thermo 500ml Vacuum Insulated Bottle Water Flask Gift Set w
An unbranded 500 ml double-wall steel thermo bottle at Rs. 270.
Why it earned its spot A 73% badge, and the second cheapest volume here despite being half-litre.
Coffee Mug Cup Digital Display, Thermos Flasks, 460 ml, 316 Stainless Steel Travel Mug, In
A 460 ml steel travel mug with a digital lid display at Rs. 349.
Why it earned its spot Seated because the shelf returns it for a flask query and the rate is still readable.
Go24 pexpo Echo Pro ISI Certified Stainless Steel Water Bottle 2000ml Hot & Cold Thermos W
A 2-litre ISI-marked steel flask at Rs. 1,609.
Why it earned its spot The highest sticker price in the read sits mid-table once you divide by capacity.
Go24 pexpo Stainless Steel Water Bottle 1 LTR | Thermosteel Flask 3 layer Insulation, ISI
A 1-litre three-layer insulated steel flask at Rs. 819.
Why it earned its spot The second of five 1-litre listings that span Rs. 539 to Rs. 997.
500ml Stainless Steel Vacuum Flask with 3 Cups | Leakproof Insulated Thermos Bottle for Ho
A 500 ml steel flask sold with three cups at Rs. 429.
Why it earned its spot A 33.33x stated multiple and a 97% badge, with no rating published.
Go24 pexpo Stainless Steel Water Bottle Flamingo Silver 1000ml Triple Wall, Leakproof lid,
A 1-litre triple-wall steel bottle at Rs. 869.
Why it earned its spot The middle of the 1-litre group, on 279 ratings.
Pigeon by Stovekraft Rush Thermos Stainless Steel Sipper Flask 750ml with Straw,Cleaner an
A 750 ml steel sipper flask with straw at Rs. 729.
Why it earned its spot A straw-lid bottle at a flask rate, on 3,158 ratings.
Five Listings Say One Litre, And Span Rs. 539 To Rs. 997
One stated capacity, one stated construction, a 1.85-fold price spread - and rating pools running from none published at all to 14,087.
Borosil Thermo 1000 ml Stainless Steel Bottle | ISI Certified Made in India Double Wall Va
A 1-litre ISI-marked double-wall steel bottle at Rs. 975.
Why it earned its spot A known brand name at the top of the 1-litre group, with a pool of five.
Borosil 1L Hydra Bolt Matte Blue Stainless Steel Water Bottle | Double Wall Vacuum Insulat
A 1-litre double-wall insulated steel bottle at Rs. 997.
Why it earned its spot The dearest 1-litre listing here, and the best-evidenced one.
Above Rs. 100 A Hundred Millilitres: Everything Under Half A Litre
Where the rate doubles. Three 300 ml bottles spanning Rs. 101 to Rs. 166 per 100 ml, the most-rated flask in the read at the fourth dearest rate, and a 280 ml bottle at nearly four times the cheapest rate on the page.
Stainless Steel Mini Vacuum Insulated Water Bottle 300ml Thermos Flask, Portable Design, T
An unbranded 300 ml mini vacuum insulated bottle at Rs. 304.
Why it earned its spot Past this point every listing costs more than Rs. 100 per 100 ml.
ZYPHEX Mini Stainless Steel Thermal Bottle 300ML, Vacuum Insulated Water Bottle, Double Wa
A 300 ml mini double-wall thermal bottle at Rs. 348.
Why it earned its spot Rs. 44 more than the 300 ml above it for the same stated capacity.
Borosil 800ml Active Lavender Stainless Steel Thermos Water Bottle | Vacuum Insulated Flas
An 800 ml vacuum insulated steel bottle at Rs. 960.
Why it earned its spot A large rating pool at a rate dearer than every 1-litre listing here.
MILTON Flip Lid 500 Thermosteel Water Bottle 500 ml, 24 Hr Hot and Cold I Leak Proof Lid w
A 500 ml thermosteel bottle with a flip lid at Rs. 659.
Why it earned its spot More than nine times the rating pool of any other listing in this read.
Mini Vacuum Insulated Water Bottle 300 ml, Double Wall Stainless Steel Thermal Flask with
An unbranded 300 ml double-wall thermal flask at Rs. 499.
Why it earned its spot The third 300 ml listing here, and Rs. 195 dearer than the first.
MILTON Minimate 300 Thermosteel Water Bottle, 280ml | ISI Certified, SS304 Stainless Steel
A 280 ml ISI-marked thermosteel bottle at Rs. 578.
Why it earned its spot 3.83 times the rate of the cheapest listing in this read.
How to read a flask shelf
Four rules. First: divide the price by the capacity printed in the title before comparing anything. On this shelf that single step moves a Rs. 1,609 flask to fourth cheapest and a Rs. 578 one to dearest. Second: know where the line falls. Here it is almost exactly at 500 ml - every listing of 500 ml or more costs under Rs. 100 per 100 ml and every listing under 500 ml costs more, regardless of brand or badge. Third: check the capacity group before the brand. Five listings state 1 litre and sell at Rs. 539, Rs. 819, Rs. 869, Rs. 975 and Rs. 997 - the same stated capacity and the same stated construction, a 1.85-fold spread, and the only one of the five with a substantial rating pool is the most expensive. Fourth: treat the stated MRP as noise and the rating count as signal. One listing here states a Rs. 14,300 MRP on a Rs. 429 flask, a 33.33x multiple, where the next highest stated MRP on the page is Rs. 2,455 - and three of the four cheapest listings by volume publish no rating at all. If the brief is the most volume for the money, Rs. 539 buys a stated litre with nothing behind it and Rs. 997 buys a stated litre with 14,087 ratings behind it; if the brief is the most-trusted flask here, that is a 500 ml at Rs. 659 with 152,820 ratings and one of the worst rates on the page. We bought, filled, timed and temperature-tested nothing.
How our picks compare
| Product | Sale price | MRP | Discount |
|---|---|---|---|
| Rs. 53.90/100ml | Rs. 539 | Rs. 999 | 46% |
| Rs. 54.00/100ml | Rs. 270 | Rs. 999 | 73% |
| Rs. 75.87/100ml | Rs. 349 | Rs. 699 | 50% |
| Rs. 80.45, 2 litres | Rs. 1,609 | Rs. 2,455 | 34% |
| Rs. 81.90/100ml | Rs. 819 | Rs. 1,999 | 59% |
| Rs. 14,300 stated MRP | Rs. 429 | Rs. 14,300 | 97% |
| Rs. 86.90/100ml | Rs. 869 | Rs. 1,099 | 21% |
| Rs. 97.20/100ml | Rs. 729 | Rs. 1,195 | 39% |
| Rs. 97.50, 5 ratings | Rs. 975 | Rs. 1,195 | 18% |
| Rs. 99.70, 14,087 | Rs. 997 | Rs. 1,315 | 24% |
| Rs. 101.33/100ml | Rs. 304 | Rs. 499 | 39% |
| Rs. 116.00/100ml | Rs. 348 | Rs. 899 | 61% |
| Rs. 120.00/100ml | Rs. 960 | Rs. 1,155 | 17% |
| 152,820 ratings | Rs. 659 | Rs. 885 | 26% |
| Rs. 166.33/100ml | Rs. 499 | Rs. 999 | 50% |
| Rs. 206.43, dearest | Rs. 578 | Rs. 705 | 18% |
What we skipped — and why
What we look for
Every price read from Amazon's own search results
Each selling price, stated MRP, discount badge, star average and rating count on this page was read on 5 October 2026 from amazon.in's own search-results listing for 'thermos flask stainless steel', logged out, in India, with nothing purchased. 30 listings were returned and 16 are seated.
Capacity is taken from each listing's own title, never estimated
Every millilitre figure used to compute a per-100 ml rate on this page is printed in the listing's own title - 280 ml, 300 ml, 460 ml, 500 ml, 750 ml, 800 ml, 1,000 ml, 2,000 ml. We did not measure, fill or weigh any flask, and where a listing's stated capacity is wrong the rate computed from it will be wrong too.
Multi-item listings are excluded from the rate comparison
A per-100 ml rate is only readable where the stated capacity belongs to one vessel. Listings sold as multipacks or sets of bottles were left out rather than divided, because a pack count truncated out of a search-page title is the most common way a per-unit figure goes wrong.
Rating counts are printed in full beside every star average
On this shelf the published pools run from none at all to 152,820, and three of the four cheapest listings by volume carry no rating count. A 4.2 average on 3 ratings and a 4.2 on 152,820 are not the same evidence, so every card prints the sample size and no card treats a star average on a tiny pool as a verdict.
The stated MRP outlier is reported, not used
One listing states a Rs. 14,300 MRP against a Rs. 429 price, a 33.33x multiple, where the next highest stated MRP on the page is Rs. 2,455. This page reports that figure and the badge computed from it, and then ranks the flask on its per-100 ml rate like every other listing, because the stated MRP tells a shopper nothing.
No claim is made about insulation, retention or certification
'24 hours hot and cold', 'vacuum insulated', 'double wall', 'triple wall', 'leak proof', 'ISI certified', 'SS304' and every stated millilitre figure are the listings' own printed words, reproduced as printed. We did not buy, fill, invert, time or temperature-test anything, and nothing here is a statement about heat retention, leak resistance, steel grade, food safety or any certification.
FAQs
How much does a steel thermos flask cost on Amazon?
In this read of 30 listings on 5 October 2026, the 16 seated flasks ran from Rs. 270 to Rs. 1,609 by sticker price. Priced by stated capacity they ran from Rs. 53.90 to Rs. 206.43 per 100 ml. One litre cost between Rs. 539 and Rs. 997 across five listings, 300 ml between Rs. 304 and Rs. 499 across three, and the single 2-litre listing cost Rs. 1,609. Prices change continuously, so check the live page.
What is the cheapest thermos flask per litre on Amazon?
In this read it was an unbranded 1-litre vacuum insulated steel flask at Rs. 539, which works out at Rs. 53.90 per 100 ml - 3.83 times cheaper by volume than the dearest listing on the page, a 280 ml bottle at Rs. 206.43 per 100 ml. It publishes no star average and no rating count at all. Capacity figures are the listings' own stated numbers; we did not fill or measure any flask.
Is a bigger flask always cheaper per litre?
On this shelf, almost exactly. Every listing of 500 ml or more came in under Rs. 100 per 100 ml and every listing under 500 ml came in above it, with the single exception of an 800 ml bottle at Rs. 120.00 per 100 ml. The 2-litre flask, which carried the highest sticker price in the read at Rs. 1,609, was the fourth cheapest by volume. Size set the rate far more reliably than brand name or discount badge did.
Why does one Amazon flask show a Rs. 14,300 MRP?
We can only report that it does. A 500 ml flask sold with three cups listed at Rs. 429 against a stated MRP of Rs. 14,300 - a 33.33 times multiple and a 97% badge - where the next highest stated MRP anywhere in this read was Rs. 2,455. No rating was published on the listing. An MRP is the figure a listing displays; we have not verified that any item here was ever sold at its stated MRP, and nothing on this page alleges mispricing or wrongdoing by anyone.
Which thermos flask has the most ratings on Amazon?
In this read, a 500 ml thermosteel bottle with a flip lid at Rs. 659 carried 152,820 ratings at a 4.2 star average - more than nine times the pool of any other listing here. At Rs. 131.80 per 100 ml it was also the fourth dearest flask on the page by volume, dearer than every 1-litre listing in the read. Rating counts are Amazon's own published figures on the date read and a star average is not our assessment of any flask.
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