Wise and Revolut give you mid-market rates and 0% FX fees. Roughly ¥6,000 saved on a $1,500 trip. Order before you fly and you'll skip the counter queues entirely.
Bottom line: Airalo wins on cheap metered plans, Holafly wins on unlimited data. Full breakdown for a 1-2 week trip (May 2026).
Airalo if you'll use ≤5 GB, Holafly if you want unlimited.
Airalo sells metered plans (1/5/10/20 GB) at lower prices — a 5 GB week is $11 vs Holafly's $27 unlimited. Holafly only sells unlimited, which is right for heavy streamers, tethering for a group, or visitors who'd rather not think about data. For pure maps + SNS + photos, Airalo is half the price.
Airalo: pay by data; Holafly: pay by time
Need a Japan phone number? Look at Sakura Mobile instead.
5 GB is plenty. Airalo 5 GB at $11 dramatically undercuts Holafly's $27. Skip video streaming and you'll have leftover data.
Video burns through 5 GB in days. Holafly 15-day unlimited at $47 is the calmer option — no surprise top-up purchases.
Holafly's unlimited is the safer base for tethering. But if it's truly 3+ people, a pocket WiFi rental (Ninja WiFi) often beats either eSIM on total cost.
Airalo 1 GB at $4.50 is plenty. Holafly's shortest plan is 5 days — wasted spend for a 2-night stop.
Buy in either app / via email before you fly, scan the QR onto your phone, switch on data when you land. No physical SIM swap needed.
Raw speeds are similar — both ride on a Japanese carrier's 4G/5G. Airalo uses SoftBank; Holafly varies by season. Holafly's unlimited plans can throttle during fair-use peaks; Airalo doesn't because it's metered.
Strongly recommended. You can install after landing if you have airport / hotel WiFi, but without WiFi you have no way to download the eSIM. Best practice: install 48-72h before flying, run a test activation, then turn it off until you land.
Airalo lets you add data to the same plan ("top-up"). Holafly is already unlimited so the question doesn't apply. If you bought Airalo 5 GB and run dry, you can buy another 10 GB and they stack.
iPhone XS (2018) or later, Pixel 4 (2019) or later, Galaxy S20 or later — these all support it. Check Settings → General → About; if there's an "eSIM" entry, you're good. A few Japan-domestic phone models don't support eSIM, so verify before you fly.
Not for sightseeing. You need a phone number for restaurant reservations, SMS verification, or Suica top-ups via SMS. If those matter, Sakura Mobile's data + voice SIM is a better fit. eSIM is purely for data.
Data verified against official Airalo and Holafly Japan pages, May 2026. Pricing and plan structure shift with seasonal promotions — confirm current options on each partner's site before buying.
Last verified: 2026-05-19