O2 roaming in the USA: Charges, packages, and coverage

Does O2 offer free roaming in the USA? 

O2 doesn’t offer free roaming in the USA to all UK customers by default. Free-use style roaming in the US is only available if you’re a Volt customer, on a selected Plus Plan, or on an Ultimate Plan with O2 Travel Inclusive Zone benefits. Everyone else has a few options: O2 Travel at £7 (US$9) a day, a business roaming pass, or standard roaming rates.

What do you need for O2 roaming to work in the USA?

To use O2 roaming in the USA, you’ll need:

• A compatible phone. Your device should support 4G or 5G and 4G calling while roaming because the USA now relies fully on 4G calling. Without a compatible device, you may still get some service, but calls may not work properly.

• A compatible SIM and plan. You’ll need a 4G- or 5G-enabled SIM and an O2 plan that supports roaming in the USA. It’s also worth checking your settings before you travel: 4G calling needs to be switched on, and Wi-Fi calling should be switched off.

• The right roaming option. Depending on your plan, that could be:

  • Travel Inclusive Zone. 

  • Travel Inclusive Zone Ultimate.

  • O2 Travel Bolt On.

  • Standard roaming on Pay As You Go.

Unlike EU roaming, where UK travelers expect simpler or lower-cost usage, the USA requires a different setup. O2’s better-value roaming options in the US are mostly designed around daily flat-fee access on selected plans. If you’re outside those plans, international roaming gets expensive very quickly. On Pay As You Go, O2 Travel isn’t available at all, and standard rates apply. On some monthly plans, O2 may require data roaming bundles and block data unless you buy one. 

Packages for O2 roaming in the USA  

O2 splits USA roaming into a few different options: inclusive roaming on eligible plans, a paid daily bolt-on for other Pay Monthly users, and standard rates for Pay As You Go.

The consumer roaming information below was collected on April 20, 2026, from O2’s UK consumer support and international roaming pages.

O2 Travel Inclusive Zone packages 

If you already have the Volt, Plus, or Ultimate Plan, this is the easiest way to use O2 in the USA. With O2’s Travel Inclusive Zone and Travel Inclusive Zone Ultimate, you can use your phone in the United States at no extra cost. You get unlimited minutes, texts, and data. However, data speeds are capped at 2 Mbps, and calls to countries other than the UK or the country you’re visiting aren’t included.

This option is great for people who already have an eligible plan and want the least hassle. You arrive, connect, and use your phone without having to think about a separate O2 USA roaming package every day.

O2 Travel Bolt On (Pay Monthly) 

If you’re on Pay Monthly but don’t have the Inclusive Zone benefit, O2 Travel is the main paid option. It costs £7 (US$9) a day, with the 24-hour period starting the first time you call, text, or use data. That daily fee includes unlimited data, texts, and calls back to the UK or within the country you’re visiting. Data speeds are capped at 2 Mbps.

It makes the most sense for short trips or anyone who wants a predictable daily cost without upgrading their plan.

Pay Monthly without O2 Travel

If you travel to the USA without O2 Travel, O2 charges £3 (US$4) per minute for outgoing calls, £3 (US$4) per minute for incoming calls, and £1 (US$1.30) per text. For data, O2 uses roaming bolt-ons instead of a daily pass, with Zone 1 options priced at £6 (US$8) for 1 GB, £13 (US$17) for 3 GB, and £18 (US$24) for 5 GB.

If you don’t buy a data roaming bolt-on, O2 will stop your data abroad to avoid unexpected charges.

O2 pay-as-you-go roaming in the USA

If you use O2 Pay As You Go to stay connected in the USA, the key thing to know is that O2 Travel is not available. That means you don’t get a daily roaming pass or an inclusive USA allowance. Instead, you fall onto standard international roaming rates.

Pay-as-you-go rates are £2 (US$3) per minute for outgoing calls, £2 (US$3) per minute for incoming calls, 50p (US$1) per text, and £7.20 (US$10) per MB of data. In practice, this option only makes sense for very light use, with most connectivity handled over Wi-Fi.

O2’s data roaming charges in the USA

O2’s USA roaming costs vary a lot depending on your plan. Some customers get roaming included, some pay a daily fee, and others fall onto much higher standard rates. The table below breaks down the main O2 roaming options in the USA:

The cheapest option overall depends on how often you travel. If you already have Volt, a Plus Plan, or an Ultimate Plan, inclusive USA roaming is convenient because no extra daily roaming charge applies. However, that doesn’t make it the most affordable option overall, because these are premium plans. For many travelers, O2 Travel at £7 (US$9) a day is the better-value choice for short trips because you only pay on days you use your phone in the USA.

The weakest option is a monthly plan without O2 Travel activated — it comes even more expensive than the already steep PAYG roaming rates.

How to activate O2 roaming in the USA

To get O2 roaming working in the USA, check your device compatibility, choose the option that matches your plan, and follow the steps below.

How to activate O2 Travel Inclusive Zone in the USA:

1. Check whether you’re on a Volt, selected Plus, or Ultimate plan.

2. Sign in to My O2 and check that Travel Inclusive Zone or Travel Inclusive Zone Ultimate is active on your plan.

3. Turn 4G calling on and switch Wi-Fi calling off.

4. When you arrive, switch on mobile data and let the phone connect to a partner US network.

How to activate the O2 Travel bolt-on in the USA:

1. Open My O2 before you travel and check whether O2 Travel is already active.

2. If it isn’t, add it in My O2 or text “TRAVEL” to 23336.

3. Keep roaming enabled on your phone.

The £7 (US$9) daily charge only starts when you make a call, send a text, or use data. You’re only charged on the days you actually use it.

How to activate O2 Pay Monthly roaming in the USA without O2 Travel:

1. Turn on roaming in your phone settings.

2. Check My O2 for available data roaming bundles and buy one. Otherwise, O2 may block your mobile data abroad to prevent unexpected charges.

3. If you don’t enable O2 Travel, you’ll be using standard roaming rates.

If in doubt, avoid mobile data until you’re on Wi-Fi.

How to activate O2 Pay As You Go roaming in the USA:

1. Make sure roaming is enabled on your handset.

2. Remember that O2 Travel isn’t available on Pay As You Go in the USA, so you’ll be using standard roaming rates. Use your phone very lightly, especially for data.

What to do if O2 roaming isn’t working in the USA

If your O2 roaming isn’t working in the USA, check for these common reasons:

• Your phone isn’t compatible with 4G calling. The USA relies on 4G calling for roaming. An older or unsupported device may connect for data but fail for calls.

• 4G calling is off. O2 recommends enabling 4G calling and disabling Wi-Fi calling for places where only 4G/5G calling is available.

• Your tariff doesn’t include roaming in the USA. Not every O2 UK tariff gives free or bundled US roaming. Check My O2 before assuming you’re covered.

• You never added O2 Travel. Monthly plan users outside the Inclusive Zone benefit need to add the bolt-on or fall back to standard charging.

• Data is blocked. On some O2 setups, if you don’t buy an eligible roaming data bundle, O2 may stop data usage abroad to prevent bill shock.

O2 business roaming in the USA

O2 international roaming for businesses works differently from personal roaming and uses business passes rather than the consumer O2 Travel setup. The main options for the US are:

• The Rest of World 24-hour pass: £7.50 (US$10) for 500 MB of data, 300 minutes, and 300 texts.

• The Rest of World 30-day pass: £99 (US$132) for 5 GB of data, 3,000 minutes, and 3,000 texts.

For teams that travel often, an eSIM for business is usually simpler to manage and easier to control costs.

Benefits of O2 roaming in the USA 

O2 roaming in the USA has some clear upsides:

• Easy setup on eligible plans. On qualifying plans, roaming in the USA is already included, so travel feels straightforward from the start.

• Predictable daily pricing on Pay Monthly. O2 Travel gives a fixed £7/day (US$9) cost instead of a mix of per-minute and per-MB charges.

• Unlimited usage with the travel packages. Both O2 Travel and the Inclusive Zone give unlimited data, minutes, and texts, even if speeds are capped.

• Access to your UK number. Helpful for banking texts, work calls, and staying reachable on your regular number.

Limitations of O2 roaming in the USA 

O2 roaming in the USA is convenient in the right circumstances, but it also has some downsides:

• Charges for most customers. Roaming in the USA is only included on selected plans. For other users, £7 (US$9) a day may seem manageable, but a two-week trip can add up to nearly £100 (US$133).

• A poor-value pay-as-you-go option. It doesn’t include O2 Travel or inclusive USA roaming, and standard data charges are steep enough to make normal phone use hard to justify.

• High standard roaming prices. If you fall outside the right plan, costs become prohibitive.

• Device compatibility risks. If your device doesn’t support 4G calling abroad, roaming in the US may be problematic or partly unusable.

• Data caps. Data is capped at 2 Mbps on O2 Travel products. That’s fine for everyday use, but it’s not premium-speed roaming.

Tips to save money when using O2 roaming in the USA

O2 roaming in the USA can be manageable, but only if you stay on top of how you use it:

• Get the right roaming option before you travel. Check whether you already have Inclusive Zone access or need O2 Travel.

• Use My O2 before takeoff. It’s the easiest place to confirm your bolt-ons and plan eligibility.

• Avoid Pay As You Go for data if you can. O2 pay-as-you-go roaming in the USA is typically too expensive for normal smartphone use.

• Keep an eye on your data usage. Set data alerts before you travel and check your usage regularly while you’re away.

• Turn off background data. App refresh, cloud sync, and photo backups can eat through data without you noticing.

• Use Wi-Fi for heavy tasks. Hotel, airport, and café Wi-Fi is better for downloads, streaming, and video calls. Keep roaming data for things you need while out and about, like maps, messages, or booking apps.

• Trip length considerations. O2 Travel costs £7 (US$9) a day, which can feel reasonable for short trips, but it becomes less appealing as daily charges add up over a longer stay.

Alternatives to O2 roaming in the USA 

Using O2 in the US works well if your plan already includes roaming. If not, other options often offer better value.

Local SIM cards

A local US SIM card can turn out cheaper than O2 roaming, especially on a longer trip. But it comes with extra hassle. You need to find a shop, swap SIMs, and lose easy access to your UK number while that SIM is out.

Pocket Wi-Fi

Pocket Wi-Fi works well for multiple devices or group travel. The trade-off is carrying an extra gadget, keeping it charged, and paying rental or delivery fees.

Public Wi-Fi 

Public Wi-Fi is easy to find and often free, which makes it tempting. The problem is that it’s also the least dependable option. Connections can be patchy, and privacy is weak on shared networks in airports, cafés, hotels, and other public places.

eSIMs 

An eSIM is usually the best option for travelers with eSIM compatible phones. You can set it up before departure, avoid physical SIM swaps, and use prepaid data without paying O2 roaming rates. If you’re unsure how much data to buy, using a data usage calculator before your trip will help you avoid overpaying and pick the right eSIM plan for your stay.

To learn more about eSIMs, explore our detailed resources:

• What is eSIM?

• An eSIM vs. a physical SIM card.

Why is the Saily eSIM app the best connectivity option in the USA?

For most travelers, Saily might be a smarter choice than O2 roaming in the USA because it cuts out the two biggest headaches: daily roaming fees and surprise charges. Saily’s US eSIM plans start at US$3.99, offer nationwide coverage through US networks, and work on eSIM-compatible smartphones without the need to buy a physical SIM.

One important difference: Saily is data only, so standard calls and SMS aren’t included, but that’s not a big problem for most travelers who use WhatsApp, FaceTime, Signal, or similar apps. Heavy data users may also prefer the eSIM Ultra plan, especially for longer US trips where daily roaming fees add up quickly.

Download an eSIM app before your trip and set up data in advance.

O2 roaming in the USA: Key takeaways

O2 roaming options in the USA work well if you’re on the right plan. The strongest option is O2 Travel Inclusive Zone available on Volt, Plus, or Ultimate plans. The next best is O2 Travel at £7 (US$9) a day, which is convenient but not especially cheap. The least attractive option is falling back to standard roaming rates, particularly for Pay Monthly users.

If you want the simplest and cheapest way to stay connected for data, an eSIM for the USA is often a better option.