eSIM for Yellowstone

Yellowstone: what to know before you go

Where there is signal

The National Park Service lists coverage at Mammoth Hot Springs, Old Faithful, West Thumb and Grant Village, Lake Village and Fishing Bridge, from Canyon Village to Tower Junction, and near the West Entrance. The roads between villages and the backcountry are not covered.

Lamar Valley

Lamar Valley, east of Tower Junction, is outside the areas the park lists as covered, so plan to be offline there. Download maps before you drive in.

Old Faithful in summer

The Old Faithful area has coverage that is often overloaded in summer, and the park says texting usually works best. Agree meeting points if your group splits up between villages.

Offline maps in the park app

The official NPS app lets you download park content for offline use, with a switch at the top of the Yellowstone section. Do it in the gateway town, such as West Yellowstone, Gardiner or Jackson, before the long drives.

Wildlife jams

Bison and bears stop traffic on the roads, where there is no signal. Leave margin in your day and keep the park's required distance from the animals.

How much data you need

A week of maps, bookings and photos takes about 2 to 3 GB, since most of the day is offline. Download the park content before you enter.

Written 24 October 2026. Opening rules, fees, prices at attractions and event dates change, so check the official site before you rely on them.

Yellowstone: when people go

November 2026 to March 2027: winter closures

Most park roads close to regular vehicles after a projected last day of 31 October 2026, and snowcoaches and snowmobiles run from a projected 15 December 2026 into mid March 2027. Only the road between the North Entrance at Gardiner and the Northeast Entrance at Cooke City stays open to cars all year, and it passes through Lamar Valley.

April and May 2027: spring reopening

The roads reopen in stages, usually from mid to late April, weather permitting, and the 2027 dates are not yet published. Check the park's road status before you plan a loop drive.

June to August 2027: the summer peak

These are the busiest months, with the village networks often overloaded and texts working best. Arrive early, avoid the major sites at midday and save everything offline.

United States eSIM 2026: prices, network and coverage

10 plans, from $2.49 (1 GB, 7 days) to $39.49 (50 GB, 30 days). Networks: AT&T 5G and Verizon 5G.

Network

AT&T 5G, Verizon 5G

Top-up

Yes, from the app, on the same eSIM

Validity starts

At the first connection at your destination

Install by

Shown on your order. An eSIM that is never installed expires

Your number

Stays active, plans are data only

Hotspot

Uses the same plan data, no separate charge

After the daily allowance

Day passes slow down to 512 Kbps

Updated November 12, 2026

Questions about Yellowstone

Is there signal in Lamar Valley?

It is not on the park's list of covered areas, so plan on none. Download maps before you drive in.

Is Yellowstone open in winter?

Most roads close to regular vehicles in winter, with snowcoach and snowmobile tours inside the park and one road kept open from Gardiner to Cooke City. Check the park's road status before you plan.

How much does an eSIM for Yellowstone cost?

Yellowstone uses the United States plans, because an eSIM belongs to a country and not to a city. Plans start at $2.49 for 1 GB, valid for 7 days. There are 10 plans, from 1 GB to 50 GB, plus unlimited day passes.

Do I need a local SIM card in Yellowstone?

No. The eSIM is a SIM card in digital form: you install it from a QR code before you leave, and there is nothing to buy at the airport or swap in your phone.

How is it different from roaming in Yellowstone?

With roaming, your own carrier bills the data you use abroad, usually by the day or by the megabyte, at the prices of your plan. The eSIM is prepaid: you know the cost before you leave and nothing is added later. Keep data roaming off on your usual line, so it cannot charge you.

Which networks does the Yellowstone eSIM use?

Wigoo connects to AT&T and Verizon, with 5G where it is available. Each plan lists the operators it uses.

Can I add more data?

Yes. You top up the same eSIM from the app, without installing a new one.

Do I keep my phone number?

Yes. Plans are data only, so your usual line stays active for calls and texts, and WhatsApp keeps working as always.

When do the validity days start?

Not when you buy and not when you install: the days start counting when the eSIM connects to a network at your destination for the first time. A 30 day plan gives you 30 days from that first connection.

How long do I have to install the eSIM?

An eSIM that is never installed expires. The "Install by" date is shown on your order, on the site and in the app, so you can buy ahead of your trip. Install it before that date, on Wi-Fi.

Can I use the eSIM as a hotspot?

Data used through a personal hotspot comes out of the same plan, and Wigoo does not charge it separately. A laptop uses far more data than a phone, so for work a day pass or a bigger plan is safer.

What happens when the data runs out?

Plans are prepaid, so there are no extra charges: when the data is used up, the connection stops until you add more from the app. Day passes give a daily allowance at full speed, then continue at reduced speed (512 Kbps) until the next day.

When should I install the eSIM?

Before you leave, on Wi-Fi. When you land, set the Wigoo line for mobile data and turn on data roaming for it.