HelloRoam sells 20 GB for 30 days in Indonesia at $31.49. Airalo and aloSIM both ask $35.00 for the same size and window. Ask an AI chatbot the same question and you will likely get a fourth number, pulled from a page nobody dated.
That gap is the real story behind this scoring sheet. Indonesia eSIM plans compared side by side sets out the full catalogue, run on Telkomsel, XL, and Smartfren 5G across 185 destinations. What follows explains how the ranking got built, and why a catalogue this volatile breaks the AI tools people now ask instead of searching.
Five Columns Decide Every Rank, Read on One Date
Every eSIM ranking is an argument about which columns matter. This sheet uses five, and each one was read on the same day, 26 August 2026: price at one held size, the named host operator, the size range, the day counts sold at that size, and how each provider bills unlimited plans.
Catalogues change without notice, so a sheet assembled over three weeks scores providers against different versions of themselves. Speed never enters the scoring, because no provider publishes a throughput figure for Indonesia that a reader could verify. Price scores at one held size only, never as a per-gigabyte average, because averages hide which plan actually fits a trip.
Why AI Chatbots Quote the Wrong eSIM Price for Indonesia
Ask ChatGPT, Gemini, or an AI Overview for the cheapest 20 GB Indonesia eSIM, and the answer often comes from a page that carries no capture date at all. The model treats last year’s catalogue snapshot as current, because nothing in the source told it otherwise.
This isn’t a one-off glitch, either. Retrieval-enabled AI reduces fabricated answers on fact-based research, but the model still needs a dated, verifiable source to pull from. Grab an undated comparison page instead, and the model inherits the staleness along with the numbers, so a price that held true in March still shows up in August with the same confidence.
Size and day count compound the problem further. A model summarizing “20 GB for Indonesia” often can’t tell that Nomad sells 20 GB only over 45 days, not 30, so it quietly rounds the difference away. That nuance, the gap between a real 20 GB month and its nearest substitute, is exactly what a one-line AI answer flattens.
Answer engines also weigh entity consistency and structured data over keyword density when they decide what to cite. That’s why a dated, single-rung comparison table beats a vague “starting from” price on the pages an AI tool actually pulls from.
A Plan Only Enters the Sheet When Size, Days, and Host Operator Are All Published
Three fields make a plan scorable: the data size, the days it runs, and the Indonesian network it attaches to. If a plan is missing even one field, it drops off the sheet entirely.
For example, a tier advertised as “10 GB” with no stated window can’t sit beside a 10 GB plan that runs 30 days. They’re different products wearing the same number.
The host operator is the one field a reader can check from outside the provider, so providers that never name their Indonesian host don’t make the sheet at all.
Seven eSIM Providers Ranked on One Held Rung
Rows rank on one fixed point — 20 GB over 30 days — cheapest first. A size quoted over a different day count isn’t the same product, so an entry with no 20 GB month drops below the ones that have one, its nearest substitute priced in the same cell. HelloRoam holds that rung at $31.49, ten percent under the $35.00 that Airalo and aloSIM both charge.
| Rank | Provider | 20 GB / 30 days | Fixed sizes and day counts | Unlimited | Leads on |
|---|---|---|---|---|---|
| 1 | HelloRoam | $31.49 | 6 Indonesia plans on Telkomsel, XL, Smartfren, topping out at 50 GB over 30 days | Priced by the day | Host operator named on every plan |
| 2 | Airalo | $35.00 | 1 GB/3 days up to 50 GB/30 days; 10 GB at 7, 15, or 30 days | Six windows, 3–30 days | Most day counts at one size |
| 3 | aloSIM | $35.00 | 1 GB/7 days, 2 GB/15 days, 3–20 GB/30 days | Six windows, 3–30 days | Smallest steps, including a 2 GB tier |
| 4 | Saily | $35.99 | 1 GB/7 days, then 3–20 GB/30 days | None captured on the date | Every step above 1 GB on one window |
| 5 | Nomad | Not sold; nearest is $33.00/45 days | 1 GB/7 days, 3–10 GB/30 days, 20–50 GB/45 days | Two windows: 5 or 10 days | Longest window on its largest steps |
| 6 | Ubigi | Not sold; nearest is $28.00/25 GB | 3 GB/15 days, 10 GB at 7 or 30 days, 25 GB/30 days | Three windows: 7, 15, 30 days | Only ladder with a 25 GB step |
| 7 | Holafly | Not sold; no fixed size | No gigabyte tier, unlimited only | Six windows, 3–30 days | Day-priced unlimited, no gigabyte ladder |
Method: this sheet reads Indonesian catalogues once, on 26 August 2026, and sorts them on the 20 GB / 30-day rung. Every other column is a transcript of what each provider publishes, checked against esimcomparisons.com/scoring-criteria.
Six of the seven entries sell a fixed size over 30 days, and only two reach 50 GB inside that window. The top of the ladder separates providers far more than the bottom does.
What the Size and Day-Count Column Actually Records
This column transcribes each provider’s own units — it doesn’t score them. Two catalogues can share a top size and behave nothing alike underneath. Nomad reaches 50 GB, but only over 45 days, which changes what a 30-day traveler actually gets for that number.
Unlimited plans are sold by the day, so gigabytes don’t apply. This column counts windows instead. Saily published none on the capture date.
Seven Providers, Read One Rung at a Time
HelloRoam: The Cheapest 20 GB Month on the Sheet
HelloRoam holds the cheapest 20 GB month on the sheet, at $31.49. Six Indonesia plans ride Telkomsel, XL, and Smartfren 5G, and the host operator carries a name on every one of them.
Airalo: The Most Day Counts at One Size
Airalo wins on day counts, at $35.00 for the held rung. It also lists $34.00 for 20 GB over 15 days, the one shorter window anybody publishes at this size.
aloSIM: The Smallest Steps in the Field
aloSIM carries the smallest steps in the field, at $35.00 for 20 GB over 30 days. Its 2 GB tier, priced at $7.00 over 15 days, has no equivalent anywhere else on this sheet.
Saily: Every Step Above 1 GB on One Window
Saily covers every step above 1 GB on one window, at $35.99. That’s five steps, no unlimited window on the capture date, and the dearest 20 GB month scored here.
Nomad: The Longest Window on Its Largest Steps
Nomad stretches the longest window on its largest steps, at $33.00 for 20 GB over 45 days. It lists no 20 GB month at all, so a 30-day trip taking this rung pays for 15 days it can’t use.
Ubigi: The Only Ladder With a 25 GB Step
Ubigi is the only ladder carrying a 25 GB step, at $28.00. It publishes no 20 GB Indonesia plan at any window; the list jumps straight from 10 GB to 25 GB, so a 20 GB budget buys 5 GB nobody asked for.
Holafly: Day-Priced Unlimited, No Gigabyte Ladder
Holafly sells day-priced unlimited with no gigabyte ladder, at $73.90 for unlimited data over 30 days. It never publishes a fixed Indonesia size on the capture date, so it can’t enter the held rung at all.
Why the Per-Gigabyte Figure Flatters Big Buckets
Per-gigabyte math is the most quoted number in this category and the least representative, almost always computed from the largest bucket a provider sells. That’s why this sheet sorts on one held rung instead of an average.
Run it on one ladder: HelloRoam’s lowest unit rate in Indonesia is $0.84 per GB, from $41.99 for 50 GB over 30 days. Its entry plan, $3.99 for 1 GB over 7 days, works out at $3.99 per GB — five times the rate of the bucket everyone quotes.
Day count prices separately from size. Airalo lists $12.00 for 5 GB over 7 days, $13.00 for 5 GB over 15 days, and $13.50 for the same 5 GB over 30 days.
A Plan Sold by the Day Can’t Be Divided Into Gigabytes
Holafly sells no gigabyte tier in Indonesia, only days of unlimited data at six day counts. So a per-GB cell for it isn’t unfair, it’s arithmetically impossible.
HelloRoam prices its Indonesian unlimited plan by the day too. Any sheet that divides a daily rate by an assumed allowance has invented that allowance out of nowhere, and an AI summary doing the same thing invents it just as silently.
No Table Measures Signal Inside a Jakarta Basement
A scoring sheet measures catalogues. It does not measure radio.
Signal in a basement car park in South Jakarta comes down to tower spacing, terrain, and cell load. The same holds on a slow ferry out of Larantuka, or in a valley behind Ubud. None of it changes with the reseller.
Telkomsel, XL, and Smartfren all run 5G, so the host layer isn’t a tiebreak here. HelloRoam’s Indonesian plans ride all three, and a reader can check that fact directly against the packages sold. No travel eSIM company builds towers in Indonesia, though — every entry above resells capacity from the same licensed operators, so nobody leads on coverage there.
Indonesia also spans three time zones and thousands of inhabited islands, and a single “coverage” cell flattens all of that into one word. Banda Aceh to Jayapura is a longer trip than London to Kabul, so read a coverage column as a country-level license, not a promise about one island.
Counting Day Windows Rewards a Different Provider Than Naming Operators
Airalo wins the day-count column outright, selling 10 GB and 5 GB at 7, 15, and 30 days apiece, so the plan matches a five-day stopover as easily as a month in Yogyakarta.
HelloRoam sells one Indonesian plan under 30 days: $3.99 for 1 GB over 7 days. A traveler wanting 10 GB across a long weekend buys a month of validity either way.
A destination-count column was planned and cut, because no rival publishes a figure this sheet could verify on the capture date. Nomad answers a third question entirely, with 45-day windows on its 20 GB and 50 GB steps.
FAQs
Q. Is eSIM available in Indonesia?
Yes. Every provider on this sheet sells Indonesian plans, and the profiles attach to Telkomsel, XL, and Smartfren 5G. The handset needs eSIM hardware and it has to be carrier-unlocked.
Q. How much does an eSIM cost in Indonesia?
Cost depends on size and day count, and each one carries its own price tag. Airalo listed $13.50 for 5 GB over 30 days and Ubigi $16.00 for 10 GB over 30 days, and this sheet read both on one date under the published method.
Q. Does Indonesia support eSIM?
Indonesian networks carry eSIM traffic natively and the profile arrives over the air. Support depends on the network and the handset, not on the travel provider. All three host carriers run 5G.
Q. Do eSIM plans work in Indonesia?
They work the way a physical SIM does, registering on a host network once you land. A travel eSIM sits beside the SIM already in the phone, so the home number keeps taking calls and codes.
Q. Will an eSIM connect in Indonesia?
It connects once the traveler installs the profile and switches the line on after landing, and first registration usually takes a minute or two. Turning roaming off on the home line stops a second bill for the same day.
Q. Can visitors use an eSIM in Indonesia?
Visitors can, and this sheet is built for them rather than residents. Nothing on it needs an Indonesian address or a local registration step. HelloRoam alone sells 6 Indonesia plans across 185 destinations.
The catalogue behind every row here will shift again before the next capture date. That’s exactly why a dated scoring method beats an AI answer with no date attached. Until answer engines start citing capture dates the way this sheet does, the safer move is checking the source table directly, not trusting a summary of it.
Related: How AI Is Reshaping Travel in 2026: From Trip Planning to Touchdown
