Eurostar vs Flying for a Family of Four: The October Half-Term 2026 Door-to-Door Data From Three London Postcodes (Paris, Amsterdam, Brussels)

Most English schools break for half-term from Monday 26 to Friday 30 October 2026, which means the Friday 23 and Saturday 24 October departures out of London are the most contested family travel slots of the autumn. Every year parents run the same argument at the kitchen table: Eurostar is “easier” but “expensive,” flying is “cheaper” but “a faff.” Both of those statements are only half true, and which half depends almost entirely on your postcode and your kids’ ages.

So I did the maths properly. I priced a family of two adults, an 8-year-old and a 3-year-old for Friday 23 to Monday 26 October 2026, timed the door-to-door journey from three real London postcodes (N1 Islington, TW9 Richmond, CR0 Croydon), and read the child-fare small print for Eurostar, easyJet, British Airways and Brussels Airlines so you don’t have to.

Key Numbers at a Glance (Prices October 2026)

One number that doesn’t fit in a table: the e320 has 16 coaches and a family of four can almost always get a table-of-four in Standard if you book 3+ weeks out. On an A320 you get a row of three plus one across the aisle, and that fourth seat is where the 3-year-old ends up.

Why Your Postcode Matters More Than the Timetable

St Pancras is in N1C. Heathrow is 23 km west of it, Gatwick 45 km south. Whichever hub you live near effectively gets a 30–50 minute head start, so comparing “2h16 train vs 1h15 flight” without the airport leg is meaningless.

I picked three postcodes to span the realistic spread of London families:

• N1 (Islington): 15-minute walk or a £1.75 bus (kids under 11 ride free) to St Pancras; 50 minutes to Heathrow on the Piccadilly line (£5.60 adult, children under 11 free with an adult); 45 minutes to Gatwick on Thameslink from St Pancras itself (£13.90 adult off-peak in October 2026).
• TW9 (Richmond): 50 minutes to St Pancras (Overground to Highbury then two stops, or District line plus a change); 30 minutes to Heathrow by taxi (£28–35) or 45 minutes on District-then-Piccadilly; 1h05 to Gatwick via Clapham Junction.
• CR0 (Croydon): 35–40 minutes to St Pancras on Thameslink from East Croydon; 15 minutes to Gatwick on the same line (£6.30 adult, £3.15 child 5–15, under-5s free); 1h15+ to Heathrow.

For fairness, every scenario below uses the same buffers: 75 minutes at St Pancras, 120 minutes at the airport, 30 minutes to deplane and clear passport control on arrival, and public transport (not taxis) to a central hotel at the other end. Everything is scheduled time with zero delays, which flatters flying more than rail.

Door-to-Door Times From Three London Postcodes

Destination “doors” are the Marais in Paris (via Métro line 4 from Gare du Nord or RER B from CDG), the Jordaan in Amsterdam (tram 2 from Centraal or the 15-minute Sprinter train from Schiphol), and Grand-Place in Brussels (one Metro stop from Midi or the 17-minute Airport Express train from Zaventem).

The pattern is blunt. Paris and Brussels are train cities from every postcode, even Richmond and Croydon. Amsterdam is a plane city on paper, because the direct Eurostar is nearly four hours and only runs 3–4 times a day in each direction (the 08:16 arriving 13:12 is the family-friendly one).

The EES wrinkle nobody is budgeting for

Since the EU’s Entry/Exit System went fully operational on 10 April 2026, every non-EU passport holder is fingerprinted and photographed on first entry, then just photo-verified on later trips. At St Pancras this happens at kiosks before French passport control; at CDG, Schiphol or Zaventem it happens in the arrivals hall, which is why I’ve added 30 minutes on the flight side.

Children under 12 skip the fingerprints but still need the photo, and a 3-year-old who won’t look at a camera can burn five minutes on his own. If this is your family’s first Schengen trip since April, the Eurostar side of that table could stretch by 15 minutes on a half-term Friday. Eurostar’s own guidance is 75 minutes for Standard on peak dates; I’d treat 90 as the family number.

What It Actually Costs a Family of Four Over Half-Term

All fares below were sampled in the first week of October 2026 for travel Friday 23 October (out) and Monday 26 October (back), the most expensive realistic pairing. Family: two adults, one 8-year-old, one 3-year-old. Eurostar is Standard class; airlines are the cheapest fare that lets you bring a weekend’s worth of kids’ clothes.

The headline: a family with a child under four saves €280–350 per weekend on Eurostar to Paris or Brussels. Even paying for the toddler’s seat, the train still undercuts easyJet to Paris by about €100 once bags and the Gatwick train are counted.

Amsterdam is the exception, and it’s close. Eurostar’s longer route means higher fares, and easyJet’s hand-baggage-only trick (if you can genuinely do a weekend with four under-seat bags) brings flying down to around €908, which beats the train with a toddler seat.

Child fare rules side by side

• Eurostar: Under 4 = free, no seat, no ticket needed (bring the passport, obviously). Ages 4–11 = child fare, typically 35–40% below the adult fare on the same train in October 2026. Age 12+ = adult. Child fares are only sold with at least one adult on the same booking.
• easyJet: Under 2 = infant on lap, €30–35 each way flat. Age 2+ = adult fare, full stop. Guaranteed free seating next to an adult for under-12s since 2023, but only when you book the kids on the same booking.
• British Airways: Under 2 = 10% of adult fare on lap. Age 2–11 = “child fare” that on short-haul Euro Traveller is usually identical to the adult price. Free family seating for under-12s at booking.
• Brussels Airlines: Under 2 = roughly €35 each way. Age 2–11 = adult fare on most Light/Classic tariffs.

In other words, the airline “child discount” is largely a myth on short-haul Europe. Eurostar’s is real and scales: two kids aged 4–11 is where the train pulls decisively ahead.

Decision Framework: Choose Eurostar If… Choose Flying If…

Choose Eurostar if:

• You’re going to Paris or Brussels from anywhere in Zones 1–4. The door-to-door and cost both favour the train, and you keep the pram, the snacks and the 500 ml water bottles.
• You have at least one child under 4 (free) or two under 12 (child fares). Each one is worth €150–190 against an airline.
• Your weekend is actually Friday evening to Monday. The 18:31 Friday Eurostar gets you to Paris for 21:47, which is a bedtime, not a write-off.
• You’re doing Disneyland Paris. Eurostar’s direct Marne-la-Vallée service was cut in 2023, but Gare du Nord to the park is 40 minutes on RER B then RER A, versus 60–75 minutes from CDG, and French Toussaint holidays (17 October–2 November 2026) mean the park is at full tilt whatever you do.

Choose flying if:

• Amsterdam is the destination and you live south or west (CR0, TW9, anywhere on the Gatwick or Heathrow lines). You’ll save 90 minutes each way.
• Everyone is 12+ and you can travel with cabin bags only. The airline fare advantage is real when nobody qualifies for a child fare and nobody needs a hold bag.
• You’ve got Avios or a BA Companion Voucher to burn. A BA reward flight LHR–CDG in Euro Traveller was 9,000 Avios plus about €40 taxes per person in October 2026.
• You’re extending beyond the weekend to somewhere the train doesn’t reach quickly, like Copenhagen or Lisbon, and want a single airline booking for protection.

Edge case: Brussels Charleroi. Ryanair from Stansted to “Brussels” Charleroi was selling at €55 per person each way for half-term, but Charleroi is 60 km from the city, the shuttle bus is €17.99 per adult each way, and the Stansted Express is €27.70 return per adult. Total door-to-door creeps past 5h30 from N1 and the family saving versus Eurostar evaporates. Skip it.

A Costed Sample Plan: N1 Family of Four to Paris, 23–26 October 2026

This is the itinerary I’d actually book, with the 3-year-old on a lap for the train but a proper cot at the hotel.

1. Friday 23 Oct, 16:45: Bus 91 from Caledonian Road to St Pancras, 12 minutes, £1.75 for each adult (Hopper fare), kids free. Arrive 17:00 for the 18:31 Eurostar: 90 minutes covers EES photos for all four and the Benugo pastry stop.
2. 18:31–21:47: Eurostar 9052 to Gare du Nord. Table of four in Standard coach 9, booked at eurostar.com 24 days out: adults €145 each way, 8-year-old €90, toddler free. Dinner from the on-board café is €26 for a family-sized spread; better, bring a Pret picnic from St Pancras and spend that on wine in Paris.
3. 21:47–22:20: Walk out of Gare du Nord (no second passport check) and take Métro line 4 three stops to Étienne Marcel. Adults €2.50 each, 8-year-old €1.25, toddler free.
4. Hotel: Hôtel Jeanne d’Arc Le Marais, family quad room €215 per night in late October 2026 (€645 for three nights), 2 minutes from Place des Vosges, cot free on request. Skip the chain hotels near Gare du Nord; Rue Lafayette at night is not where you want to be pushing a buggy.
5. Saturday: Jardin des Plantes and the Ménagerie (€13 adult, €10 child 3–25, open 10:00–18:00 in October), lunch at Breizh Café (Rue Vieille du Temple, galettes €9–16, open 10:00–22:00). Sunset is 18:33 on 24 October; take the Seine riverboat at 17:30 (Bateaux Mouches, €16 adult, €7 ages 4–12, under-4 free).
6. Sunday: Musée d’Orsay is free for under-18s and €16 for adults, but go to the Louvre’s Petite Galerie with the kids instead and book the 09:00 slot at louvre.fr (€22 adult, under-18 free). Afternoon at Parc des Buttes-Chaumont while the leaves are turning.
7. Monday 26 Oct, 11:13–12:39 (local/UK): Eurostar 9023 home. Arrive at Gare du Nord by 09:45 — EES applies on the UK side too, and the Monday-of-half-term trains are the fullest of the year. Back at the front door in N1 by 13:05.

Budget: Eurostar €783 + hotel €645 + food (€75/day for four eating well but not fancy) €225 + activities €95 + transport in Paris €25 = €1,773 for three nights. The same weekend on easyJet, same hotel, same everything else, came to €2,057, and you’d have left home at 11:15 on Friday rather than 16:45.

The Tech Side: Apps, Connectivity and Getting Paid When It Goes Wrong

Booking: Eurostar’s own site and app give you the seat map; Trainline adds a small booking fee and no seat map. Book direct. For flights, set a Google Flights alert on the exact dates now; easyJet half-term fares to CDG in 2025 rose roughly 40% in the final 14 days before departure.

Connectivity: EE, Vodafone and Three all charge £2.40–2.60 per day for EU roaming on most post-2021 pay-monthly plans, so two adult phones over four days is around £20. An Airalo Europe eSIM with 1 GB for 7 days was $5 in October 2026, and a 3 GB Nomad Europe plan was about $8. Install it on the kids’ tablet too and download the Paris Métro map offline in Citymapper before you leave St Pancras; the Channel Tunnel is 20 minutes of no signal, and Eurostar’s on-board Wi-Fi struggles with four devices streaming Bluey.

Compensation: If a flight lands 3+ hours late for reasons within the airline’s control, each passenger — including the 3-year-old on a full fare — is owed €250 under EU261 and £220 under UK261. Filing yourself is free but slow; AirHelp takes a percentage and chases the airline for you, which is worth it when four claims are on the line. Eurostar pays 25% of the leg’s fare as a refund or an e-voucher at 60 minutes late and 50% at 120 minutes, via the “Delay compensation” form at eurostar.com within 60 days.

Passport check: French, Belgian and Dutch border police all enforce the EU rule that a UK passport must have been issued fewer than 10 years before your entry date and be valid 3 months beyond departure. Check all four passports tonight; HM Passport Office’s standard service was running at 3 weeks in October 2026, and a 1-week Fast Track appointment is £178.

Common Mistakes London Families Make on This Trip

• Booking the toddler a Eurostar seat without thinking. It’s €150–180 return. On a 2h16 journey, a lap and a tablet is fine. On the 3h55 to Amsterdam, buy the seat.
• Choosing Amsterdam that week without checking hotel prices. Amsterdam Dance Event (21–25 October 2026) pushes family-room rates to €300+ a night in the centre. The same nights in Brussels were €140–180 for a quad at Hotel Van Belle or the Citadines near Sainte-Catherine. If it must be the Netherlands, stay in Haarlem (15 minutes by train, €4.70) and commute.
• Arriving at St Pancras 45 minutes before a half-term train. That was fine in 2023. With EES kiosks it isn’t, and Eurostar closes the gate 30 minutes before departure with no refund on Standard tickets.
• Packing liquids the airline way for the train. There’s no liquid limit on Eurostar. Bring the full-size sun cream, the juice cartons and a bottle of wine for the hotel room.
• Taking the return on the Sunday evening. Sunday 25 October 2026 is both the end of the weekend and the day the clocks go back in the UK and across Europe, so the Eurostar timetable shows odd times and the 17:00–19:00 trains were the priciest of the week when I checked. The Monday 11:13 was €60 per adult cheaper.
• Booking easyJet’s cheapest fare and then adding a bag at the airport. A hold bag at the gate is £60; online in advance it’s £36–45. Decide before you click.
• Forgetting the French Toussaint overlap. French schools are off 17 October–2 November 2026, so Paris attractions are at domestic-peak levels. Pre-book timed slots for the Louvre, Orsay and the Eiffel Tower (lift tickets €29.40 adult, €7.30 ages 4–11, under-4 free) at least 10 days ahead.

The Verdict

For Paris and Brussels, Eurostar wins on time from all three postcodes and on money for any family with a child under 12, and it’s not close once you include bags and airport transfers. The gap is €280–350 per weekend with a toddler, and 25–85 minutes each way door-to-door.

For Amsterdam, fly if you live south or west of the river and can do cabin bags, take the train if you’re north or east and value the 3h55 of sitting-still with a table. If you’ve got the whole week rather than a weekend and the budget to match, the same by-the-numbers approach we used on a family-of-four Namibia self-drive in October shows what the long-haul end of half-term looks like.

Fares for 23–26 October 2026 are moving daily now. Pull up eurostar.com and Google Flights side by side tonight, plug your own postcode into Citymapper for the first leg, and book whichever one lets you leave the house after the school run on Friday. Then tell us in the comments which won for your family.

About the Author: Tomáš Bzirský

Founder and editor of Distratech. Based in the Czech Republic, travelling regularly from Central Europe. Writes practical travel guides and travel-tech comparisons (eSIM, apps, airports) in six languages.

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