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Last Updated: June 11, 2026 · Reviewed by Ryuyan from Kansai, Japan
Quick Answer (the honest 30-second version):
- Best overall value & coverage → Airalo. Reliable SoftBank network, top-ups, and the widest plan range. When I checked in June 2026, the Japan page listed unlimited-only plans (3 days ¥1,900 up to 30 days ¥11,900).
- Best for budget + built-in security → Saily. Cheap fixed-data (1 GB / 7 days for US$3.99), an ad blocker & “virtual location” baked in, and it’s made by the NordVPN company. Use code AIFROMJAPAN10 for 10% off.
- Best for true unlimited streaming → Holafly. Genuinely unlimited data on KDDI/SoftBank — but tethering is capped at 1 GB/day and it’s the priciest of the three.
On a tight budget? Saily. Want least hassle & best coverage? Airalo. Streaming all day & hate watching your data counter? Holafly.
Transparency note: I checked every price, plan and refund policy on the live Airalo, Saily and Holafly pages from Japan on June 11, 2026. I have not personally speed-tested all three on the same SIM, so any speed/reliability comments below are clearly attributed to named user reports — never claimed as my own benchmark.
➤ Check the latest Saily Japan eSIM prices (use code AIFROMJAPAN10 for 10% off) *(affiliate link)*
Contents
- Why an eSIM for Japan (and the legal bit)
- Airalo vs Saily vs Holafly at a glance
- Airalo review
- Saily review
- Holafly review
- Head-to-head: pricing for a real Japan trip
- How to choose (situation-based picks)
- Alternatives
- FAQ & final verdict
Why an eSIM for Japan (and the Legal Bit)
All three of these are travel eSIMs — a digital SIM you install by scanning a QR code, no plastic card, no airport queue.
The big practical win in Japan: no eKYC or ID check. Japanese carrier SIMs require ID verification under Japanese law, but these are data-only plans with no Japanese phone number, so you skip all that.
The trade-off is also data-only: no Japanese number for calls or SMS-based logins. For most short-stay travelers using WhatsApp, LINE and maps, that’s totally fine. If you need a proper number, that’s a different guide.
💡 Pro tip: install the eSIM before you fly, while you still have Wi-Fi, then switch it on after landing at Narita, Haneda or Kansai. All three apps let you set it up early.
If you also want to watch Japanese TV back home, pair your eSIM with a VPN — I cover that in how to watch ABEMA & TVer outside Japan.
Airalo vs Saily vs Holafly at a Glance
| Airalo | Saily | Holafly | |
|---|---|---|---|
| Plan type | Unlimited only (Japan page, June 2026) | Fixed-data and unlimited | Unlimited only |
| Cheapest entry | 3 days ¥1,900 | 1 GB / 7 days US$3.99 | 3 days US$11.70 |
| Network | SoftBank (+1 other) | Local partners (Nord brand) | KDDI / SoftBank |
| Tethering | Allowed | Allowed | Capped at 1 GB/day |
| Top-ups | Yes | Yes | Re-purchase |
| Extra | 30M+ users (company claim) | Ad blocker, virtual location | 1 GB free backup/month |
| Refund window | Case-by-case | Case-by-case | Up to 6 months |
Prices checked on the live Japan pages, June 11, 2026. Airalo showed JPY (I browsed from Japan); Saily and Holafly showed USD. Your displayed currency may differ.
Airalo Review: The Coverage King
Best for: travelers who want the safest, most reliable choice with the least fuss.
Airalo is the household name in travel eSIMs, and the company claims over 30 million users (treat that as their figure, not an independent stat). The Japan eSIM runs primarily on SoftBank, which is solid in cities and on the shinkansen (bullet train) corridors.
Here’s the surprise from my June 2026 check: the Japan page listed unlimited plans only. I toggled the fixed-GB (“Data”) view twice with two methods and saw no Japan-only fixed-GB package. For a smaller GB bucket, Airalo nudges you to its regional Asia eSIM (from ¥700) or Global eSIM (from ¥1,450) instead.
Airalo Japan unlimited pricing (checked June 11, 2026): 3 days ¥1,900 · 5 days ¥2,850 · 7 days ¥4,450 · 10 days ¥5,800 · 15 days ¥8,100 · 30 days ¥11,900. Top-ups are supported if you run low.
My ratings: Ease of use 9/10 · Coverage 9/10 · Pricing 8/10.
⚠️ Honest cons: if you specifically wanted a cheap small fixed-GB Japan plan, Airalo’s Japan page may not show one right now — Saily wins there. And “unlimited” plans can carry fair-use shaping, so read the package fine print.
➤ See Airalo’s current Japan eSIM plans *(affiliate link)*
Saily Review: Budget + Built-In Security
Best for: budget travelers and privacy-minded folks who want cheap fixed data plus security extras.
Saily is Nord Security’s eSIM brand — the same company behind NordVPN. If you already trust that ecosystem (see my NordVPN review for Japan), Saily feels familiar and the app is clean.
What sets it apart: a built-in ad blocker, web protection and a “virtual location” feature inside the app. That’s unusual for an eSIM and genuinely handy on public Wi-Fi.
Saily Japan pricing (checked June 11, 2026): 1 GB / 7 days US$3.99 · 3 GB / 30 days US$7.99 · 5 GB / 30 days US$10.99 · 10 GB / 30 days US$17.99 · 20 GB / 30 days US$24.99 (each gives 3% back in Saily credits). The 15-day unlimited plan was US$48.99 when I looked.
💡 The unlimited plan is 5 GB/day at full speed, then up to 1 Mbps after that — fine for maps and chat, slow for HD video. Be clear-eyed: this is fair-use “unlimited,” not flat-out unlimited.
My ratings: Ease of use 8/10 · Coverage 8/10 · Pricing 9/10.
⚠️ Honest cons: for heavy streaming the 1 Mbps throttle bites, and the unlimited tier costs more than Airalo’s at some durations. For light-to-moderate use, though, that US$3.99 1 GB plan is the cheapest entry of the three.
➤ Get Saily for Japan and apply code AIFROMJAPAN10 for 10% off *(affiliate link)*
Holafly Review: Truly Unlimited
Best for: travelers who stream, video-call and navigate all day and never want to think about a data counter.
Holafly’s pitch is genuinely unlimited data on KDDI/SoftBank with (their claim) 4G LTE and 5G coverage. If your worst nightmare is running out of data in the middle of Shibuya, this is the peace-of-mind option.
Holafly Japan pricing (checked June 11, 2026): 3 days US$11.70 · 5 days US$19.50 · 7 days US$27.30 · 10 days US$36.90 · 15 days US$50.90 · 30 days US$74.90. It also includes an “Always On” perk: 1 GB of backup data free every month.
My ratings: Ease of use 8/10 · Coverage 9/10 · Pricing 6/10.
⚠️ Honest cons: tethering is capped at 1 GB per day (so a 7-day plan shares only 7 GB total) — bad news if you tether a laptop. It’s also the most expensive per day. On the plus side, the refund policy is generous: incompatible device, cancelled trip or connection issues, with up to 6 months to request (5–10 business days to process).
➤ Check Holafly’s unlimited Japan plans *(affiliate link)*
Head-to-Head: Pricing for a Real 7-Day Japan Trip
Say you’re in Japan for a week. Here’s roughly what each costs (June 2026 figures):
- Light user (maps + chat, ~3 GB): Saily 3 GB plan US$7.99 — clearly cheapest.
- Average user: Airalo 7-day unlimited ¥4,450 (~US$30) — simple, reliable, no counting.
- Heavy streamer: Holafly 7-day unlimited US$27.30 — true unlimited if you don’t tether much.
What stands out: Saily wins on small/light usage, Airalo wins on balanced value, Holafly wins only if you truly burn unlimited data on one device. For most readers torn between the three, that’s the deciding line.
Reddit travelers on r/JapanTravel and r/japanlife broadly report all three work well in cities; rural coverage tracks whichever underlying carrier you’re on (SoftBank/KDDI). I’m citing those user reports, not my own benchmark.
➤ Lock in Saily’s price + 10% off with AIFROMJAPAN10 *(affiliate link)*
How to Choose: Situation-Based Picks
There’s no single “best” — it depends on you:
- On a tight budget / light data user → Saily (1 GB US$3.99 or 3 GB US$7.99).
- Want the least hassle & best all-round coverage → Airalo.
- Privacy-conscious / already in the Nord ecosystem → Saily.
- Stream/video-call on your phone all day → Holafly.
- Tethering a laptop heavily → NOT Holafly (1 GB/day cap) — pick Airalo unlimited or a larger Saily fixed plan.
For the full ranking against other providers like Ubigi and Jetpac, see my hub guide: Best eSIM for Japan in 2026. Traveling with a laptop for work? A VPN pairs well — start with the best VPN for Japan.
Alternatives to Airalo, Saily & Holafly
These three aren’t the only options. Three honest alternatives worth knowing:
- Ubigi: strong native-network speeds and good for longer stays / 5G; less beginner-friendly app than Airalo.
- Jetpac: bundles a free VPN and fast support; smaller plan range than Airalo.
- Pocket Wi-Fi rental: best if you have several devices or non-eSIM phones, but it’s a physical gadget to carry, charge and return.
Curious whether you even need a VPN alongside? Read is using a VPN legal in Japan first.
FAQ
Do I need ID to buy these eSIMs in Japan?
No. Airalo, Saily and Holafly are travel eSIMs with no eKYC/ID check, unlike Japanese carrier SIMs which require ID under Japanese law. They’re data-only with no Japanese number.
Is Saily’s discount code real?
Yes — AIFROMJAPAN10 gives readers 10% off any Saily plan. It went live June 8, 2026 via Saily’s affiliate team. It doesn’t change my ranking; Saily earns its spot on price and features.
Can I tether/hotspot?
Airalo and Saily allow tethering. Holafly limits sharing to 1 GB per day, so it’s poor for powering a laptop all day.
Is “unlimited” really unlimited?
Be skeptical. Saily’s unlimited is 5 GB/day full speed then up to 1 Mbps. Holafly’s is genuinely unlimited on the device but caps tethering. Always read the fair-use terms.
Which has the best refund policy?
Holafly is the most generous I saw — refunds for incompatible devices, cancelled trips or connection issues, with up to 6 months to request.
Final Verdict
After checking all three live from Japan, here’s my honest call:
- Pick Airalo if you want the safest, most reliable, least-fuss option and don’t mind unlimited-only pricing.
- Pick Saily if you’re on a budget or want security extras — and grab 10% off with AIFROMJAPAN10.
- Pick Holafly only if you genuinely stream all day on your phone and won’t tether much.
For most readers stuck between the three, I’d start with Saily for value or Airalo for peace of mind. Either way, install before you fly.
➤ Start with Saily + 10% off (code AIFROMJAPAN10) *(affiliate link)*
Questions about your specific trip — region, devices, how much data? Drop a comment and I’ll help you pick. Safe travels! — Ryuyan, Kansai
Related Articles You Might Find Useful
If this guide was helpful, here are a few more from AI From Japan covering related topics:
- Best eSIM for Japan in 2026 — Honest Picks for Tourists, Expats & Digital Nomads
- How to Watch ABEMA & TVer Outside Japan (with a VPN) in 2026
- Best VPN for Japan 2026: Top 5 Picks for Expats, Travelers & Digital Nomads
- Is Using a VPN Legal in Japan? (2026 Guide)
About the author
I’m Ryuyan Kimura, a content blogger based in the Kansai region of Japan. I’ve been reviewing AI tools, VPNs, and password managers for English-speaking expats and Japanese learners since AI From Japan launched. I test products hands-on from real Japanese networks in Kansai (NURO Hikari fiber + ahamo / SoftBank mobile) wherever I can; long-term performance claims are backed by independent tests and real user reports.
Want the full story? Read my About page or check our Editorial Standards for how we test products.
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