London to Paris by Eurostar: A Step-by-Step Guide

The Eurostar journey from London St Pancras to Paris Gare du Nord takes roughly 2 hours and 16 minutes, whisking you from the UK to France at speeds up to 300km/h. To make the trip, book your tickets well in advance, arrive at the station at least 90 minutes before departure for border controls, and ensure your data is sorted before you hit the Channel Tunnel. For Australians and Kiwis, this is the ultimate way to cross the Channel without the hassle of airport transfers and liquid restrictions.

Booking Your Eurostar Tickets

Booking early is the golden rule for the Eurostar. Tickets usually go on sale up to six months in advance, and prices rise significantly as the departure date approaches. You have three main classes to choose from:

• Standard: The most affordable option. You get a decent seat and a two-bag luggage allowance, but no food is included.
• Standard Premier: More legroom and a light meal served at your seat. It’s a great middle-ground for a bit of luxury.
• Business Premier: The full works. Hot meals, lounge access, and a 15-minute fast-track check-in.

When you book, you’ll receive a digital ticket. Download the Eurostar app or save the PDF to your phone. Don't rely on the station Wi-Fi to download it last minute; have it ready to scan at the gates.

Navigating St Pancras International

St Pancras is one of London's most beautiful stations, located right next to King's Cross. If you’re coming from elsewhere in London, the Underground (Tube) is your best bet. Look for the signs for "International Departures."

Unlike a domestic train, you can't just wander onto the platform two minutes before the whistle blows. Because the UK is not part of the Schengen Area, you have to go through full security and passport control before you board. For Aussies and Kiwis, this means having your passport ready for both UK exit checks and French entry checks—all performed right there in London.

The Check-In Process

1. Ticket Scan: Scan your barcode at the automatic gates.
2. Security: This is like airport security but much faster. You don't need to take off your shoes or limit your liquids (yes, you can bring a bottle of wine from Marks & Spencer on board).
3. Passport Control: You’ll pass through UK Border Force and then immediately through French Police Aux Frontières. Since you’re entering the EU, be prepared to answer a few questions about your stay.
4. The Waiting Lounge: Once through, you’re in the departure lounge. There are cafes and duty-free shops, but it can get very crowded.

Connectivity: Crossing the Channel

One of the biggest concerns for travelers is staying connected. While the Eurostar offers free onboard Wi-Fi, it’s notoriously hit-or-miss. With hundreds of passengers sharing the same bandwidth, it often crawls. If you're trying to book a restaurant in Paris or check the Metro map, you need a more reliable connection.

This is where an eSIM from AussieRoam becomes a lifesaver. Instead of paying the $10 a day that Telstra or Optus might charge for international roaming, you can see plans that cover both the UK and France (and 39 other countries) for a fraction of the cost.

As you leave London, you’ll be on the O2 5G network. When you emerge from the Channel Tunnel in France, your phone will automatically switch to a local French carrier like Orange 5G. This seamless transition means you can keep your family updated on WhatsApp without missing a beat.

Onboard Experience and the Tunnel

The journey itself is smooth and scenic. Once you leave the London suburbs, the train hits its top speed through the Kent countryside. About 30 minutes in, you’ll enter the Channel Tunnel. You’ll be in the dark for about 20 minutes. Note that mobile signal usually drops out inside the tunnel, though there is some cellular equipment installed. This is a good time to check your easy installation guide if you haven't set up your eSIM yet.

When you pop out the other side, you’re in France! The landscape changes to rolling hills and sleepy French villages. If you’re in Standard Premier or Business Premier, this is when your meal is served.

Why Use an eSIM for the Eurostar?

For Australians and New Zealanders, roaming is usually a rip-off. Using your home SIM can lead to "bill shock" when you return. AussieRoam provides data-only plans, meaning you don't get a local phone number, but you can use all your data-based apps like WhatsApp, Messenger, and FaceTime to make calls.

Our regional plan covers 41 countries, including the UK and France, using top-tier networks like Ålcom, 3, Proximus, Orange, Base, Vivacom, Tele2, A1, Vodafone, PrimeTel, O2, and TDC. Whether you're in the heart of London or a cafe in Paris, you’ll likely be on a 5G connection.

Comparing Eurostar vs. Flying

Feature	Eurostar (London to Paris)	Flying (LHR to CDG)
Total Travel Time	~4 hours (inc. check-in)	~6+ hours (inc. transfers)
Luggage	2 bags + 1 hand luggage (no weight limit)	Strict limits and high fees
Arrival Location	Central Paris (Gare du Nord)	Outskirts (CDG/Orly)
Connectivity	eSIM works most of the way	Airplane mode for 1 hour
Comfort	Wide seats, move around freely	Cramped, stuck in seat

Staying Connected in Paris

When you arrive at Gare du Nord, you’ll want your data working immediately. The station is busy and can be overwhelming. You’ll need Google Maps to find your way to the RER or Metro, or to order a Bolt or Uber if you want to avoid the long taxi queues.

If you're a heavy user, keep an eye on your data. Apps like Instagram can eat through your allowance quickly. You can read more about Data Usage for Instagram and TikTok While Traveling to help choose the right plan. We offer fixed plans ranging from 1GB for 7 days up to 50GB for 180 days, plus daily passes for those who just need a quick fix.

Before you depart, check if your phone is ready for an eSIM. Most modern iPhones and Androids are compatible, and the setup takes less than two minutes. You can even install it while waiting for your flight at Sydney or Auckland airport, so it’s ready the moment you land in Europe.

Troubleshooting and Tips

If you find your data isn't working when you hit the French countryside, don't panic. Sometimes you just need to toggle your Airplane Mode or check your settings. We have a guide on How to Fix eSIM No Service or Data Issues While Abroad that can help.

Also, if you're planning more train travel, you might find that the London to Edinburgh Train WiFi is just as spotty as the Eurostar's. Having your own dedicated data connection is always the smarter play. If you're heading further afield after Paris, check out our guide on the Best eSIM for Backpackers Traveling Across Europe.

Arrival at Gare du Nord

Gare du Nord is centrally located, but it can be a bit "gritty." Stay alert and keep an eye on your belongings.

• Metro/RER: Follow the signs for the Metro (lines 4 and 5) or the RER (lines B, D, and E). You can buy tickets at the machines, which have English language options.
• Taxis: Only use the official taxi rank outside the station. Ignore anyone inside the terminal offering you a ride.
• Data: Use your AussieRoam eSIM to check the latest transit strikes or delays, which are common in France!

Before you go, make sure to see plans and pick the one that fits your trip duration.

The bottom line

The Eurostar is the most civilized way to travel between London and Paris. By booking early, arriving with plenty of time for border checks, and having your AussieRoam eSIM installed and ready to go, you’ll skip the stress and the roaming fees. Land in Paris with your data active, find your hotel with ease, and start enjoying the City of Light immediately.