The 5GB prices are tightly clustered, so a few cents should not drive the entire decision. At 10GB and 20GB, the differences are more meaningful because every compared package has the same 30-day validity.
Bulgaria also adds two checks that a price table cannot answer: whether your existing EU plan already includes roaming, and whether a local prepaid eSIM suits a Bulgaria-only trip better.
Roafly
Roafly has the strongest capped-price position in this comparison. It leads at 5GB and 20GB and shares the lowest 10GB price with Ubigi.
Roafly's Bulgaria eSIM lists A1, Vivacom and Telenor as local networks. Telenor is the legacy name of the Bulgarian operation now branded Yettel; Bulgaria's communications regulator currently lists A1 Bulgaria, Vivacom Bulgaria and Yettel Bulgaria among the country's mobile operators.
That listing does not prove automatic switching among all three networks, 5G access, priority or better coverage. Hotspot and tethering are separately verified across the purchased Roafly data allowance, with no additional hotspot quota.
How Airalo, Saily, Roamless, Ubigi and aloSIM compare
Several alternatives sit close enough to Roafly that the smallest price differences should be kept in perspective.
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Airalo: marginally higher at 5GB, but its price gap is larger at 10GB and 20GB. Validity remains 30 days.
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Saily: costs slightly more than Roafly at each of the three comparable tiers, with the same 30-day validity.
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Roamless: is the nearest competitor at 5GB, where the difference is five cents. Roafly remains cheaper at 10GB and 20GB.
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Ubigi: matches Roafly at $11 for 10GB and 30 days. With no comparable 5GB or 20GB offer in this dataset, that tie should not be extended to other sizes.
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aloSIM: is close at 5GB but becomes the highest-priced option in this comparison at both 10GB and 20GB.
None of those differences alone proves a broader quality advantage. The table shows price and validity; other product features should matter when they are separately verified and relevant to your trip.
Check your EU roaming before buying an eSIM
If your regular mobile subscription is from another EU country, you may not need a Bulgaria travel eSIM at all.
Under the EU's Roam Like at Home rules, customers traveling temporarily within the EU can generally use calls, texts and mobile data at domestic rates. Operators can still apply fair-use conditions and roaming data limits, so your own tariff remains the deciding factor.
Before buying anything, check how much data your existing plan allows in Bulgaria. If that allowance comfortably covers the trip, an extra travel eSIM may add cost without solving a real problem.
A separate eSIM becomes more useful when your carrier charges for Bulgarian roaming, provides too little data, or you want to keep travel data separate from your primary line. Visitors whose home plans are outside the EU should not assume Roam Like at Home applies.
A1 is a local eSIM alternative
Travel eSIMs can be arranged before departure, but Bulgaria also has local prepaid options.
A1 currently lists a prepaid mobile-data starter with 15GB for €7.67 / BGN 15 and offers it as either an eSIM or physical SIM. The operator also advertises temporary activation bonuses through August 31, 2026, so those promotional allowances should not be treated as permanent package terms.
This is not a like-for-like price comparison with the 5GB, 10GB and 20GB travel eSIM baskets above. A1's package uses a different 15GB size and is a local prepaid product, so it should be assessed on its own terms rather than used to declare a cheaper overall winner.
A1 states that the prepaid data card is for use within the A1 Bulgaria network. That makes it most relevant to travelers focused on Bulgaria rather than those expecting plan to cover a wider multi-country itinerary.
For a Bulgaria-only stay, it is worth checking alongside travel eSIMs. For someone who wants connectivity arranged before departure or a travel-oriented product, the providers in the main comparison may be simpler choices.
Which Bulgaria eSIM should you choose?
- For the lowest checked capped-data price: Roafly leads at 5GB and 20GB and shares the lowest 10GB price with Ubigi.
- For exactly 10GB: Roafly and Ubigi both cost $11 for 30 days. Price and validity alone do not separate them.
- For 5GB: the market is unusually tight. Roamless, Saily, Airalo and aloSIM are all within $0.10 of Roafly, so a tiny saving should not outweigh a feature you genuinely need.
- If your EU plan already includes enough roaming data: keeping your existing plan may be the most sensible option.
- If you prefer a local Bulgaria-only product: A1's prepaid eSIM is worth comparing separately, without treating its 15GB package as equivalent to the travel eSIM baskets above.
The useful order is simple: check existing roaming first, decide how much data you need, then compare like-for-like prices and validity.
Bulgaria eSIM FAQ
Will a Bulgaria eSIM also work in Greece, Romania, Turkey or another neighboring country?
Do not assume a Bulgaria country plan includes neighboring countries. Cross-border coverage depends on the exact country or regional product you purchase.
That matters on Balkan road trips in particular. A local Bulgaria-only product and a multi-country travel eSIM solve different problems, so verify the destination list before buying.
Can I use hotspot with Roafly in Bulgaria?
Yes. Hotspot and tethering can use the full purchased Roafly data allowance, with no separate hotspot quota.
Hotspot use still consumes the same package allowance; it does not create additional data.
Does Roafly use Telenor in Bulgaria?
Roafly's current network information lists A1, Vivacom and Telenor. Telenor is the legacy brand name of the Bulgarian operator now known as Yettel.
That network list should not be interpreted as a guarantee of automatic switching, 5G access or any particular coverage advantage.
Final verdict
Roafly has the strongest price position in this six-provider capped-data comparison, leading at 5GB and 20GB and tying Ubigi at 10GB. The main reasons to choose something else are having sufficient EU roaming already or preferring a local Bulgaria-only prepaid product such as A1's eSIM.
Disclosure: Roafly publishes this guide and is included in the comparison.
