Japan, blending ancient traditions with cutting-edge technology, attracts millions of travelers each year. From futuristic Tokyo to ancestral Kyoto, from the temples of Nara to the snowy slopes of Hokkaido, staying connected is essential: scanning QR codes at restaurants, navigating Tokyo's subway, or sharing photos of cherry blossoms.
The good news? eSIM plans for Japan are among the most competitive in the Asian market. After analyzing over 200 plans from different providers, here's our selection of the best options for your trip to the Land of the Rising Sun.
At a Glance: Our Top 5 Best eSIMs for Japan in 2026
<BlogSummaryTable title="Best eSIMs Japan 2026" countryCode="JP" countrySlug="japan" plans={[ { rank: 1, providerId: "linkesim", data: "10 GB", duration: "30 days", price: "$5.50", highlight: "Best price" }, { rank: 2, providerId: "gomoworld", data: "17 GB", duration: "30 days", price: "$10.50", highlight: "Value for money", promoCode: "ESIMP" }, { rank: 3, providerId: "saily", data: "5 GB", duration: "30 days", price: "$9.70", highlight: "Easy to use", promoCode: "ESIMP" }, { rank: 4, providerId: "airalo", data: "5 GB", duration: "15 days", price: "$8.50", highlight: "Multi-network", promoCode: "ESIMP15" }, { rank: 5, providerId: "ezyesim", data: "5 GB", duration: "30 days", price: "$7.00", highlight: "10% off code", promoCode: "ESIMP" } ]} />
Our Top 5 Best eSIMs for Japan
1. LinkeSIM - Best Value for Money
Our rating: 9/10
LinkeSIM dominates the Japanese market with unbeatable prices. The 10 GB plan valid for 30 days at only $5.50 represents the best value for money on the market.
Pros:
- Unbeatable price: 10 GB for $5.50
- NTT Docomo network (excellent coverage)
- Long-term plans available
- Instant QR code activation
Cons:
- Less known interface
- English-only customer support
<BlogProviderPlans providerId="linkesim" title="LinkeSIM Japan Plans" plans={[ { data: "10 GB", duration: "15 days", price: "$6.30" }, { data: "10 GB", duration: "30 days", price: "$5.50" }, { data: "20 GB", duration: "30 days", price: "$8.40" }, { data: "30 GB", duration: "30 days", price: "$16.40" } ]} />
Verdict: If you're looking for the best price without compromising quality, LinkeSIM is our #1 recommendation for Japan.
2. GoMoWorld - Reliable European Alternative
Our rating: 8.5/10
GoMoWorld offers generous plans for Japan with the ESIMP code giving 10% off on all plans.
Pros:
- ESIMP promo code: -10%
- Very generous data allowances (up to 55 GB)
- Modern and intuitive interface
- Competitive prices after discount
Cons:
- Less known than Airalo
- No local network specified
<BlogProviderPlans providerId="gomoworld" title="GoMoWorld Japan Plans" promoCode="ESIMP" promoDiscount="-10%" plans={[ { data: "3.5 GB", duration: "7 days", price: "$4.20", priceWithPromo: "$3.80" }, { data: "17 GB", duration: "30 days", price: "$11.60", priceWithPromo: "$10.50" }, { data: "35 GB", duration: "30 days", price: "$21.10", priceWithPromo: "$19.00" }, { data: "55 GB", duration: "30 days", price: "$31.70", priceWithPromo: "$28.50" } ]} />
Verdict: Excellent value with the ESIMP code, perfect for travelers who consume a lot of data.
3. Saily - Simplest Interface
Our rating: 8/10
Saily, created by the NordVPN team, focuses on ease of use. With the ESIMP code, get 5% off all plans.
Pros:
- ESIMP promo code: -5%
- Ultra-simple interface
- Enhanced security (NordVPN team)
- 24/7 customer support
Cons:
- Slightly higher prices
- Limited plan choices
<BlogProviderPlans providerId="saily" title="Saily Japan Plans" promoCode="ESIMP" promoDiscount="-5%" plans={[ { data: "3 GB", duration: "30 days", price: "$7.40", priceWithPromo: "$7.00" }, { data: "5 GB", duration: "30 days", price: "$10.20", priceWithPromo: "$9.70" }, { data: "10 GB", duration: "30 days", price: "$16.70", priceWithPromo: "$15.90" }, { data: "20 GB", duration: "30 days", price: "$23.20", priceWithPromo: "$22.00" } ]} />
Verdict: Recommended if it's your first eSIM and you prioritize simplicity.
4. Airalo - Most Reliable
Our rating: 8/10
Airalo is the world leader in eSIM with a well-established reputation. In Japan, it uses KDDI and Softbank networks for excellent coverage.
Pros:
- KDDI + Softbank networks
- Very intuitive app
- Exclusive promo codes:
- ESIMP15: 15% off for new customers
- ESIMP10: 10% off for existing customers
- Responsive customer support
Cons:
- Higher base prices
- Not the cheapest on the market
<BlogProviderPlans providerId="airalo" title="Airalo Japan Plans" promoCode="ESIMP15" promoDiscount="-15%" plans={[ { data: "3 GB", duration: "7 days", price: "$7.90", priceWithPromo: "$6.70" }, { data: "5 GB", duration: "15 days", price: "$10.00", priceWithPromo: "$8.50" }, { data: "10 GB", duration: "30 days", price: "$16.90", priceWithPromo: "$14.40" }, { data: "20 GB", duration: "30 days", price: "$23.80", priceWithPromo: "$20.20" } ]} />
Verdict: The safe choice for those who prioritize reliability and maximum network coverage.
5. EzyeSIM - Best with Promo Code
Our rating: 7.5/10
EzyeSIM offers competitive plans with the ESIMP code giving 10% off all plans.
Pros:
- ESIMP promo code: -10%
- Wide range of plans
- Good network coverage
Cons:
- Less intuitive interface
- Variable base prices
<BlogProviderPlans providerId="ezyesim" title="EzyeSIM Japan Plans" promoCode="ESIMP" promoDiscount="-10%" plans={[ { data: "3 GB", duration: "15 days", price: "$5.80", priceWithPromo: "$5.20" }, { data: "5 GB", duration: "30 days", price: "$7.75", priceWithPromo: "$7.00" }, { data: "10 GB", duration: "30 days", price: "$12.60", priceWithPromo: "$11.35" }, { data: "20 GB", duration: "30 days", price: "$21.30", priceWithPromo: "$19.20" } ]} />
Verdict: Good choice to maximize savings with the promo code.
Which eSIM to Choose Based on Your Travel Profile?
How to Activate Your eSIM for Japan?
All eSIM Promo Codes for Japan
<BlogPromoTable title="Verified Promo Codes - January 2026" countryCode="JP" countrySlug="japan" promos={[ { providerId: "airalo", code: "ESIMP15", discount: "-15%", validity: "New customers" }, { providerId: "airalo", code: "ESIMP10", discount: "-10%", validity: "Existing customers" }, { providerId: "saily", code: "ESIMP", discount: "-5%", validity: "All plans" }, { providerId: "gomoworld", code: "ESIMP", discount: "-10%", validity: "All plans" }, { providerId: "ezyesim", code: "ESIMP", discount: "-10%", validity: "All plans" }, { providerId: "ubigi", code: "ESIMP", discount: "-10%", validity: "First purchase" }, { providerId: "adventuresims", code: "ESIMP", discount: "-10%", validity: "All plans" }, { providerId: "eskimo", code: "ESIMPTRIAL", discount: "1GB free", validity: "New users" } ]} />
Network Coverage in Japan
Japan has excellent mobile infrastructure thanks to three major operators:
NTT Docomo
- Coverage: Most extensive in Japan
- 5G: Deployed in major cities
- Used by: LinkeSIM, some Ubigi plans
KDDI (au)
- Coverage: Excellent, including rural areas
- 5G: Expanding
- Used by: Airalo, AdventureSIMs, iRoamly
Softbank
- Coverage: Very good in urban areas
- 5G: Available in metropolitan areas
- Used by: Airalo, iRoamly (depending on availability)
FAQ: Common Questions About eSIM in Japan
What's the best eSIM provider for Japan?
LinkeSIM currently offers the best value with plans starting at $5.50 for 10 GB. For those seeking reliability, Airalo remains a safe bet.
How much data do I need for a trip to Japan?
- Weekend: 3-5 GB is enough
- 1-2 weeks: 10-17 GB recommended
- 3+ weeks: 20-50 GB to be safe
Do eSIMs work everywhere in Japan?
Yes, NTT Docomo, KDDI, and Softbank networks cover over 99% of Japanese territory. Only some very remote areas may have limited coverage.
Can I use my eSIM in Tokyo's subway?
Yes, 4G/5G coverage is excellent in the subways of Tokyo, Osaka, and other major cities.
Conclusion: Our Final Recommendation
For 2026, our ranking of the best eSIMs for Japan:
- LinkeSIM - Unbeatable prices (10 GB / 30 days at $5.50)
- GoMoWorld - Excellent value with ESIMP code (-10%)
- Saily - For beginners who want simplicity (ESIMP code -5%)
- Airalo - Most reliable with multi-network coverage (ESIMP15 code)
- EzyeSIM - Good compromise with ESIMP code (-10%)
Last updated: January 2026. Prices and availability verified on 01/30/2026.
Developer and digital nomad, I lived between Canada and the United States before continuing to explore the world. After struggling with internet connectivity abroad one too many times, I created eSIM Planet to compare plans clearly and honestly. Every article is carefully written and reviewed to save you time and money.