For most visitors, Holafly is the best eSIM for the USA, because it runs on AT&T and T-Mobile with unlimited data, so you never ration maps, rideshare apps, or video calls across cities and road trips. Road trippers and national park visitors should look hard at Nomad, whose standard plans use Verizon for the best rural and remote coverage, while Airalo on T-Mobile is the easy, budget-friendly pick for city trips. Want unlimited peace of mind? Compare Holafly, or not sure how much data you need, try the eSIM Finder.
Quick Pick: the Best eSIM for United States
Holafly (Unlimited / 5 days): Runs on AT&T and T-Mobile with unlimited data, so you never worry about caps across NYC, road trips, and everyday navigation.
Our picks
Best overall: Holafly. Lowest per GB: Nomad. Unlimited: Holafly. Or use the eSIM Finder.
United States eSIM Plans Compared
Indicative pricing. Tap through for live rates.
| Provider | Plan | Data | Duration | Price | Network |
|---|---|---|---|---|---|
| Airalo | United States 1GB | 1 GB | 7 days | $5 | T-Mobile |
| Airalo | United States 3GB | 3 GB | 30 days | $11 | T-Mobile |
| Airalo | United States 5GB | 5 GB | 30 days | $16 | T-Mobile |
| Airalo | United States 10GB | 10 GB | 30 days | $26 | T-Mobile |
| Airalo | United States 20GB | 20 GB | 30 days | $37 | T-Mobile |
| Nomad | United States 1GB | 1 GB | 7 days | $4 | AT&T / Verizon |
| Nomad | United States 5GB | 5 GB | 30 days | $14 | AT&T / Verizon |
| Nomad | United States 10GB | 10 GB | 30 days | $22 | AT&T / Verizon |
| Nomad | United States 20GB | 20 GB | 30 days | $32 | AT&T / Verizon |
| Holafly | Unlimited 5-day | Unlimited | 5 days | $19 | AT&T / T-Mobile |
| Holafly | Unlimited 7-day | Unlimited | 7 days | $27 | AT&T / T-Mobile |
| Holafly | Unlimited 10-day | Unlimited | 10 days | $34 | AT&T / T-Mobile |
| Holafly | Unlimited 15-day | Unlimited | 15 days | $47 | AT&T / T-Mobile |
| Holafly | Unlimited 30-day | Unlimited | 30 days | $69 | AT&T / T-Mobile |
Airalo United States Plans
Airalo: Best for City Trips and Budget Travelers
USA plans on T-Mobile with full hotspot support and flexible data options
Airalo's USA plans connect through T-Mobile, which runs the largest and fastest 5G network in the country and tops independent speed tests. That makes Airalo an excellent fit for trips focused on cities, suburbs, and major interstates, where T-Mobile's coverage and speed shine.
The smaller 1GB and 3GB plans are ideal for a city break in New York, Los Angeles, or San Francisco, where you spend most of your time on WiFi and just need data for maps and rideshare apps between stops. For a full week of heavier use, the 5GB or 10GB plan gives you comfortable headroom, and full hotspot support lets you tether a laptop or tablet when hotel WiFi falls short.
Strengths
Weaknesses
Holafly United States Plans
Holafly: Best for Unlimited Data and Peace of Mind
Flat-rate unlimited data on AT&T and T-Mobile
Holafly connects to AT&T and T-Mobile in the USA, the two networks that cover the vast majority of populated areas, all the major cities, and most of the road corridors you will actually drive. Combined with unlimited data, that makes Holafly the most worry-free option for active sightseers.
Unlimited data means you can lean on Google Maps and rideshare apps all day, stream music on the subway, video-call home every evening, and post photos without watching a counter. It is especially valuable in a city like New York, where heavy navigation and streaming can quietly burn through several gigabytes a day. Holafly also offers plans up to 90 days for extended trips and longer stays.
Strengths
Weaknesses
Nomad United States Plans
Nomad eSIM: Best for Road Trips and Rural Coverage
Standard plans on AT&T and Verizon for the widest remote reach
Nomad is the standout pick for road trips because its standard USA plans use AT&T and Verizon, and Verizon has the widest 4G LTE footprint by land area and the best coverage in national parks, deserts, and the rural West. If your itinerary leaves the cities for Yellowstone, the Utah canyons, or long desert highways, that Verizon access is exactly what keeps you connected where other networks drop out.
Nomad also tends to offer competitive per-gigabyte pricing and full hotspot support, so you can tether a laptop or share a connection with travel companions. Note that Nomad's unlimited USA plans switch to T-Mobile instead, so if remote coverage is your priority, choose one of the standard data plans that includes Verizon.
Strengths
Weaknesses
Mobile Networks in United States
The United States has three major mobile networks available to eSIM travelers: AT&T, T-Mobile, and Verizon. Which carrier your eSIM uses matters most once you leave the big cities, because coverage in national parks, deserts, and on long rural highways varies a lot between the three.
Verizon still has the widest 4G LTE footprint by land area and is the most reliable network in remote areas, national parks, and the rural West, which is why Nomad's Verizon-based plans are the safest pick for road trips. T-Mobile runs the largest and fastest 5G network in the country and tops independent OpenSignal speed tests, making it excellent in cities, suburbs, and along major interstates. AT&T has the best overall nationwide availability, sitting just ahead of the other two for the share of time you have a usable signal somewhere in the country. Airalo's USA plans run on T-Mobile, Holafly uses AT&T and T-Mobile, and Nomad's standard plans use AT&T and Verizon while its unlimited plans switch to T-Mobile.
5G in the USA
5G is live nationwide across all three carriers, with T-Mobile offering the broadest and fastest 5G coverage in cities and along major routes. Most travel eSIMs connect at 4G/LTE or 5G depending on your device and location, and 4G/LTE alone is more than fast enough for maps, streaming, and video calls. Treat 5G as a bonus where your plan and phone support it.
Coverage Across United States
Coverage where travelers actually go:
| Area | Coverage | Notes |
|---|---|---|
| New York City | Excellent | Full 4G/5G across the boroughs; most subway stations and many tunnels now have signal, though it can drop between stops. |
| Los Angeles & San Francisco | Excellent | Strong coverage across the metros, freeways, and transit; reliable on all three carriers. |
| Major interstates & road trips | Very good | Solid along the main highways; T-Mobile and AT&T are strong, Verizon fills the more remote stretches. |
| National parks (Yellowstone, Yosemite, Grand Canyon) | Variable | Fine near entrances, lodges, and visitor centers; expect dead zones on trails and in canyons, so download offline maps. |
| Rural West & desert (Utah, Nevada, Montana) | Good on Verizon | Verizon has the best reach on long desert highways and remote towns; other networks can drop out for miles. |
| Coastal & mountain resort areas | Good | Reliable in towns and at major resorts; weaker on backcountry roads and isolated trailheads. |
How to Choose the Right Plan
Pick your USA eSIM by how far you stray from the cities. If your trip is mostly urban, New York, Los Angeles, San Francisco, or a mix, an Airalo plan on T-Mobile is fast and affordable, or step up to Holafly unlimited if you navigate and stream all day and want no cap anxiety. If you are taking a road trip through national parks, deserts, or the rural West, choose Nomad's standard plan on Verizon for the widest remote coverage.
On data, light users browsing and using maps get by on 3 to 5 GB per week, while heavy city sightseers and road trippers should plan for 10 GB or go unlimited. On budget, Nomad and Airalo win for short, predictable trips, while Holafly's flat-rate unlimited is the better value once your daily usage climbs. If you are still unsure, the eSIM Finder matches your itinerary and data needs to a plan in under a minute.
Frequently Asked Questions
Will my eSIM work on the NYC subway and other US transit?
Mostly yes. T-Mobile and AT&T have added coverage to most New York City subway stations and many tunnel sections, so you will usually have data on platforms and often between stops, though signal can drop in older tunnels. Coverage on light rail, commuter trains, and buses in other cities is generally good, but it is smart to download offline maps and transit directions before you head underground.
Do US national parks have eSIM coverage?
It is patchy. You will typically have signal near park entrances, visitor centers, and main lodges, but coverage drops or disappears on trails, in canyons, and deep in the backcountry. Verizon has the best reach in remote areas, which is why a Nomad Verizon-based plan is the safest choice for park trips. Always download offline maps before you arrive.
Do I need an eSIM if I am visiting the USA from abroad?
Usually yes, unless your home carrier offers cheap or included US roaming. International roaming with most carriers is expensive, and a travel eSIM gives you a US data plan on AT&T, T-Mobile, or Verizon at a fraction of the cost. You install it before you fly and connect the moment you land, with no SIM swapping or store visits.
How much data do I need for a week in the USA?
Most travelers use 3 to 7 GB per week for maps, messaging, rideshare apps, and social media. In a city like New York, heavy use of Google Maps, music streaming, and video calls can push that to several GB per day, so a 10 GB plan or an unlimited plan is the comfortable choice for active sightseers and road trippers.
Which eSIM is best for a multi-city US road trip?
For long road trips that pass through rural areas and national parks, choose a plan on Verizon for the widest remote coverage, such as Nomad's standard US plans. If your route sticks mainly to cities and major interstates, Holafly's unlimited data on AT&T and T-Mobile or an Airalo T-Mobile plan both work well, and unlimited data removes any worry about how many miles you cover.