Are there any unlimited data plans that focus on frequent travelers with roaming and eSIM support?

Yes — there are several unlimited data plans or “unlimited-style” travel plans aimed at frequent travelers, and many support roaming and eSIM. The best option depends on whether you want:

1. One primary domestic plan with international roaming included, or
2. A travel eSIM plan that works across many countries but is not meant to replace your home carrier.

Good options to look at

1) T-Mobile Magenta/MAX / Go5G plans (U.S.)

• Strong for frequent international travelers
• Includes roaming in many countries with unlimited texting and data at reduced speeds, plus some higher-speed data depending on plan
• eSIM supported
• Good if you want a mainstream phone plan with travel benefits

2) Google Fi Wireless

• Popular with travelers because it’s built for international use
• eSIM supported
• Roaming in many countries is straightforward
• “Unlimited” plans exist, but high-speed data is usually subject to a fair use policy or throttling after a certain amount
• Good if you want a flexible plan and travel often

3) U.S. Mobile / other MVNOs with international add-ons

• Some offer unlimited domestic data plus international roaming packages
• eSIM supported on many devices
• Usually cheaper than major carriers, but roaming coverage/features vary a lot
• Best if you mostly stay domestic but travel internationally sometimes

4) Global travel eSIM providers

These are not traditional carrier plans, but they’re very useful for frequent travelers:

• Airalo
• Ubigi
• Holafly
• Nomad
• GigSky

Notes:

• Many offer regional or global unlimited data bundles
• eSIM support is standard
• Coverage can be excellent, but “unlimited” often comes with daily speed limits, fair-use limits, or hotspot restrictions
• Best as a travel data solution, not usually your full-time primary line

Things to watch for

When comparing plans, check:

• Whether “unlimited” is truly unlimited or has a fair usage cap
• Whether roaming is included or costs extra
• Whether hotspot/tethering is allowed
• Which countries are included
• Whether the plan works as a primary line or only as a travel data eSIM
• 5G vs 4G speeds abroad
• If there are daily throttling limits

Best-fit recommendation

• If you want a full phone plan with frequent travel perks: T-Mobile or Google Fi
• If you want cheap domestic unlimited + occasional travel: an MVNO with international add-ons
• If you want fast setup for multiple countries: a global travel eSIM like Airalo, Ubigi, or Holafly

If you want, I can give you a short list of the best unlimited roaming + eSIM plans by country (for example, U.S., UK, Canada, or EU).