SparkRoam plans for Japan

Name: Global eSIM 1 GB 365 Days
Brand: SparkRoam
Price: 14.81 GBP
Availability: InStock

6,108 live plans from 63 providers, ranked on what a gigabyte actually costs rather than on the sticker price. Checked 13 October 2026

Compare 6,108 plans →

£0.17 Lowest per GB Cheapest honest gigabyte here

£1.46 Median per GB Unlimited and fair-use excluded

£0.85–3.09 Typical band Where most plans land

56% Advertise 5G 61% allow hotspot

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Data allowance Any Light 1–3 GB Standard 5–10 GB Heavy 15–30 GB Ultra 50 GB+ Unlimited (fair use)

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Compare 6,108 plans

We earn a commission on some links below. Commission carries zero weight in the ranking formula, which is published in full. Prices are indicative and the provider's own checkout is always authoritative.

Showing 75 of 6,108 plans

View offer: SparkRoam, Japan · 21 GB · 7 days 1

SparkRoam Japan · 21 GB · 7 days 21 GB 7 days 4G Japan only £7.83 £0.37 per GB

View offer: SparkRoam, Japan · Unlimited · 7 days 2

SparkRoam Japan · Unlimited · 7 days Unlimited 7 days 4G Japan only £10.68 —

View offer: SparkRoam, Japan 50GB 30Days 3

SparkRoam Japan 50GB 30Days 50 GB 30 days 4G Japan only £17.17 £0.34 per GB

View offer: SparkRoam, Japan eSIM 50 GB 30 Days 4

SparkRoam Japan eSIM 50 GB 30 Days 50 GB 30 days 4G Japan only £17.17 £0.34 per GB

View offer: SparkRoam, TOPUP • Japan 5

SparkRoam TOPUP • Japan 50 GB 30 days 4G Japan only £17.17 £0.34 per GB

View offer: SparkRoam, Japan 10GB 30Days 6

SparkRoam Japan 10GB 30Days 10 GB 30 days 4G Japan only £5.08 £0.51 per GB

View offer: SparkRoam, Japan eSIM 10 GB 30 Days 7

SparkRoam Japan eSIM 10 GB 30 Days 10 GB 30 days 4G Japan only £5.08 £0.51 per GB

View offer: SparkRoam, TOPUP • Japan 8

SparkRoam TOPUP • Japan 10 GB 30 days 4G Japan only £5.08 £0.51 per GB

View offer: SparkRoam, Japan eSIM 3 GB 15 Days 9

SparkRoam Japan eSIM 3 GB 15 Days 3 GB 15 days 4G Japan only £2.13 £0.71 per GB

View offer: SparkRoam, Japan eSIM 3 GB 15 Days 10

SparkRoam Japan eSIM 3 GB 15 Days 3 GB 15 days 4G Japan only £2.13 £0.71 per GB

View offer: SparkRoam, TOPUP • Japan 11

SparkRoam TOPUP • Japan 3 GB 15 days 4G Japan only £2.13 £0.71 per GB

View offer: SparkRoam, Japan 3GB 30Days 12

SparkRoam Japan 3GB 30Days 3 GB 30 days 4G Japan only £2.22 £0.74 per GB

View offer: SparkRoam, Japan eSIM 3 GB 30 Days 13

SparkRoam Japan eSIM 3 GB 30 Days 3 GB 30 days 4G Japan only £2.22 £0.74 per GB

View offer: SparkRoam, TOPUP • Japan 14

SparkRoam TOPUP • Japan 3 GB 30 days 4G Japan only £2.22 £0.74 per GB

View offer: SparkRoam, Japan 20GB 30Days 15

SparkRoam Japan 20GB 30Days 20 GB 30 days 4G Japan only £8.52 £0.42 per GB

View offer: SparkRoam, Japan eSIM 20 GB 30 Days 16

SparkRoam Japan eSIM 20 GB 30 Days 20 GB 30 days 4G Japan only £8.52 £0.42 per GB

View offer: SparkRoam, TOPUP • Japan 17

SparkRoam TOPUP • Japan 20 GB 30 days 4G Japan only £8.52 £0.42 per GB

View offer: SparkRoam, Japan · Unlimited · 30 days 18

SparkRoam Japan · Unlimited · 30 days Unlimited 30 days 4G Japan only £36.81 —

View offer: SparkRoam, Japan · Unlimited · 25 days 19

SparkRoam Japan · Unlimited · 25 days Unlimited 25 days 4G Japan only £30.87 —

View offer: SparkRoam, Japan · 30 GB · 10 days 20

SparkRoam Japan · 30 GB · 10 days 30 GB 10 days 4G Japan only £10.68 £0.36 per GB

View offer: SparkRoam, Japan · Unlimited · 14 days 21

SparkRoam Japan · Unlimited · 14 days Unlimited 14 days 4G Japan only £17.77 —

View offer: SparkRoam, Japan 5GB 30Days 22

SparkRoam Japan 5GB 30Days 5 GB 30 days 4G Japan only £3.11 £0.62 per GB

View offer: SparkRoam, Japan eSIM 5 GB 30 Days 23

SparkRoam Japan eSIM 5 GB 30 Days 5 GB 30 days 4G Japan only £3.11 £0.62 per GB

View offer: SparkRoam, TOPUP • Japan 24

SparkRoam TOPUP • Japan 5 GB 30 days 4G Japan only £3.11 £0.62 per GB

View offer: SparkRoam, Japan · 12 GB · 4 days 25

SparkRoam Japan · 12 GB · 4 days 12 GB 4 days 4G Japan only £4.88 £0.41 per GB

View offer: SparkRoam, Japan 10GB 30Days (TikTok/AI) 26

SparkRoam Japan 10GB 30Days (TikTok/AI) 10 GB 30 days 4G Japan only £6.94 £0.70 per GB

View offer: SparkRoam, Japan eSIM 3 GB 15 Days 27

SparkRoam Japan eSIM 3 GB 15 Days 3 GB 15 days 4G Japan only £3.27 £1.09 per GB

View offer: SparkRoam, Japan 3GB 30Days (TikTok/AI) 28

SparkRoam Japan 3GB 30Days (TikTok/AI) 3 GB 30 days 4G Japan only £3.36 £1.12 per GB

View offer: SparkRoam, Japan 50GB 180Days 29

SparkRoam Japan 50GB 180Days 50 GB 180 days 4G Japan only £27.99 £0.56 per GB

View offer: SparkRoam, Japan · Unlimited · 4 days 30

SparkRoam Japan · Unlimited · 4 days Unlimited 4 days 4G Japan only £5.87 —

View offer: SparkRoam, Japan 20GB 30Days (TikTok/AI) 31

SparkRoam Japan 20GB 30Days (TikTok/AI) 20 GB 30 days 4G Japan only £11.27 £0.57 per GB

View offer: SparkRoam, Japan 1GB 7Days 32

SparkRoam Japan 1GB 7Days 1 GB 7 days 4G Japan only £1.14 £1.14 per GB

View offer: SparkRoam, Japan eSIM 1 GB 7 Days 33

SparkRoam Japan eSIM 1 GB 7 Days 1 GB 7 days 4G Japan only £1.14 £1.14 per GB

View offer: SparkRoam, TOPUP • Japan 34

SparkRoam TOPUP • Japan 1 GB 7 days 4G Japan only £1.14 £1.14 per GB

View offer: SparkRoam, Asia (19) · 3 GB · 15 days 35

SparkRoam Asia (19) · 3 GB · 15 days 3 GB 15 days 4G +18 more countries £9.21 £3.07 per GB

View offer: SparkRoam, Japan · Unlimited · 15 days 36

SparkRoam Japan · Unlimited · 15 days Unlimited 15 days 4G Japan only £20.81 —

View offer: SparkRoam, Asia (20) · 3 GB · 30 days 37

SparkRoam Asia (20) · 3 GB · 30 days 3 GB 30 days 4G +19 more countries £9.50 £3.17 per GB

View offer: SparkRoam, Asia (19) · 3 GB · 30 days 38

SparkRoam Asia (19) · 3 GB · 30 days 3 GB 30 days 4G +18 more countries £9.50 £3.17 per GB

View offer: SparkRoam, Japan · Unlimited · 31 days 39

SparkRoam Japan · Unlimited · 31 days Unlimited 31 days 4G Japan only £44.02 —

View offer: SparkRoam, Japan · Unlimited · 21 days 40

SparkRoam Japan · Unlimited · 21 days Unlimited 21 days 4G Japan only £29.95 —

View offer: SparkRoam, Japan 5GB 30Days (TikTok/AI) 41

SparkRoam Japan 5GB 30Days (TikTok/AI) 5 GB 30 days 4G Japan only £4.35 £0.87 per GB

View offer: SparkRoam, Japan · Unlimited · 10 days 42

SparkRoam Japan · Unlimited · 10 days Unlimited 10 days 4G Japan only £14.42 —

View offer: SparkRoam, Japan 1GB 7Days (TikTok/AI) 43

SparkRoam Japan 1GB 7Days (TikTok/AI) 1 GB 7 days 4G Japan only £1.49 £1.49 per GB

View offer: SparkRoam, Asia (19) · 10 GB · 30 days 44

SparkRoam Asia (19) · 10 GB · 30 days 10 GB 30 days 4G +18 more countries £23.07 £2.31 per GB

View offer: SparkRoam, Asia (20) · 20 GB · 30 days 45

SparkRoam Asia (20) · 20 GB · 30 days 20 GB 30 days 4G +19 more countries £39.79 £1.99 per GB

View offer: SparkRoam, Asia (19) · 20 GB · 30 days 46

SparkRoam Asia (19) · 20 GB · 30 days 20 GB 30 days 4G +18 more countries £39.79 £1.99 per GB

View offer: SparkRoam, Asia (19) · 1 GB · 7 days 47

SparkRoam Asia (19) · 1 GB · 7 days 1 GB 7 days 4G +18 more countries £3.99 £3.99 per GB

View offer: SparkRoam, Asia (19) · 5 GB · 30 days 48

SparkRoam Asia (19) · 5 GB · 30 days 5 GB 30 days 4G +18 more countries £13.83 £2.77 per GB

View offer: SparkRoam, Japan · Unlimited · 5 days 49

SparkRoam Japan · Unlimited · 5 days Unlimited 5 days 4G Japan only £8.32 —

View offer: SparkRoam, Asia (12) · 3 GB · 15 days 50

SparkRoam Asia (12) · 3 GB · 15 days 3 GB 15 days 4G +11 more countries £9.11 £3.03 per GB

View offer: SparkRoam, Asia (20) · 3 GB · 15 days 51

SparkRoam Asia (20) · 3 GB · 15 days 3 GB 15 days 4G +19 more countries £9.21 £3.07 per GB

View offer: SparkRoam, Asia (12) · 3 GB · 30 days 52

SparkRoam Asia (12) · 3 GB · 30 days 3 GB 30 days 4G +11 more countries £9.30 £3.10 per GB

View offer: SparkRoam, Asia (12) · 10 GB · 30 days 53

SparkRoam Asia (12) · 10 GB · 30 days 10 GB 30 days 4G +11 more countries £22.97 £2.30 per GB

View offer: SparkRoam, Asia (20) · 10 GB · 30 days 54

SparkRoam Asia (20) · 10 GB · 30 days 10 GB 30 days 4G +19 more countries £23.07 £2.31 per GB

View offer: SparkRoam, Asia (12) · 20 GB · 30 days 55

SparkRoam Asia (12) · 20 GB · 30 days 20 GB 30 days 4G +11 more countries £39.69 £1.98 per GB

View offer: SparkRoam, Asia (12) · 1 GB · 7 days 56

SparkRoam Asia (12) · 1 GB · 7 days 1 GB 7 days 4G +11 more countries £3.90 £3.90 per GB

View offer: SparkRoam, Asia (20) · 20 GB · 90 days 57

SparkRoam Asia (20) · 20 GB · 90 days 20 GB 90 days 4G +19 more countries £41.75 £2.09 per GB

View offer: SparkRoam, Asia (20) · 1 GB · 7 days 58

SparkRoam Asia (20) · 1 GB · 7 days 1 GB 7 days 4G +19 more countries £3.99 £3.99 per GB

View offer: SparkRoam, Asia (20) · 1 GB · 30 days 59

SparkRoam Asia (20) · 1 GB · 30 days 1 GB 30 days 4G +19 more countries £4.09 £4.09 per GB

View offer: SparkRoam, Asia (12) · 5 GB · 30 days 60

SparkRoam Asia (12) · 5 GB · 30 days 5 GB 30 days 4G +11 more countries £13.73 £2.75 per GB

View offer: SparkRoam, Asia (20) · 5 GB · 30 days 61

SparkRoam Asia (20) · 5 GB · 30 days 5 GB 30 days 4G +19 more countries £13.83 £2.77 per GB

View offer: SparkRoam, Global eSIM 3 GB 30 Days 62

SparkRoam Global eSIM 3 GB 30 Days 3 GB 30 days 4G +116 more countries £11.66 £3.89 per GB

View offer: SparkRoam, Asia (20) · 50 GB · 180 days 63

SparkRoam Asia (20) · 50 GB · 180 days 50 GB 180 days 4G +19 more countries £87.97 £1.76 per GB

View offer: SparkRoam, Global eSIM 10 GB 30 Days 64

SparkRoam Global eSIM 10 GB 30 Days 10 GB 30 days 4G +116 more countries £33.89 £3.39 per GB

View offer: SparkRoam, Global eSIM 20 GB 30 Days 65

SparkRoam Global eSIM 20 GB 30 Days 20 GB 30 days 4G +116 more countries £59.45 £2.97 per GB

View offer: SparkRoam, Global eSIM 1 GB 7 Days 66

SparkRoam Global eSIM 1 GB 7 Days 1 GB 7 days 4G +116 more countries £4.98 £4.98 per GB

View offer: SparkRoam, Global eSIM 5 GB 30 Days 67

SparkRoam Global eSIM 5 GB 30 Days 5 GB 30 days 4G +116 more countries £18.15 £3.63 per GB

View offer: SparkRoam, Global eSIM 20 GB 90 Days 68

SparkRoam Global eSIM 20 GB 90 Days 20 GB 90 days 4G +116 more countries £65.85 £3.29 per GB

View offer: SparkRoam, Global eSIM 3 GB 30 Days 69

SparkRoam Global eSIM 3 GB 30 Days 3 GB 30 days 4G +126 more countries £19.53 £6.51 per GB

View offer: SparkRoam, Global eSIM 20 GB 90 Days 70

SparkRoam Global eSIM 20 GB 90 Days 20 GB 90 days 4G +126 more countries £88.64 £4.43 per GB

View offer: SparkRoam, Global eSIM 1 GB 365 Days 71

SparkRoam Global eSIM 1 GB 365 Days 1 GB 365 days 4G +116 more countries £7.34 £7.34 per GB

View offer: SparkRoam, Global eSIM 10 GB 30 Days 72

SparkRoam Global eSIM 10 GB 30 Days 10 GB 30 days 4G +126 more countries £52.77 £5.28 per GB

View offer: SparkRoam, Global eSIM 1 GB 7 Days 73

SparkRoam Global eSIM 1 GB 7 Days 1 GB 7 days 4G +126 more countries £7.93 £7.93 per GB

View offer: SparkRoam, Global eSIM 5 GB 30 Days 74

SparkRoam Global eSIM 5 GB 30 Days 5 GB 30 days 4G +126 more countries £29.56 £5.92 per GB

View offer: SparkRoam, Global eSIM 1 GB 365 Days 75

SparkRoam Global eSIM 1 GB 365 Days 1 GB 365 days 4G +126 more countries £14.81 £14.81 per GB

See all 6,108 plans →