UK Airline Family Seating: Do You Need to Pay Now?
The UK family-seating start date was removed. Check current Ryanair, easyJet, BA and Jet2 policies, the age-12–13 gap and when paying makes sense.
Source-checked pre-flight decisions
Check the rules before you pack
Compare the total cost of two London airport options, compare two fares, get a route-aware answer for airport liquids and laptops, calculate whether a power bank can fly, or check carry-on and checked-bag rules for commonly questioned items. Every tool shows its scope, conditions and official sources.
Trip-cost calculator
London Airport Total Cost
Compare fares, unavoidable extras, ground quotes and time for two London airport options.
Compare airport options →
Fare checker
Flight Fare Decision Checker
Compare the fares you already found and see which one is actually cheaper after the bags and seats you need.
Compare two fares →
Route checker
Airport Security Rules
Compare liquid, laptop and reusable-bottle rules across departure, connection and return checkpoints.
Check your airports →
Battery checker
Power Bank Flight Rules
Convert capacity to watt-hours and compare cabin, quantity, approval and onboard-use limits.
Check a power bank →
Packing checker
Can I Bring It?
See separate carry-on and checked-bag decisions for vapes, razors, medicine and other high-question items.
Check an item →
Why use a checker? Airport, airline and aviation rules can differ by checkpoint, carrier, item and date. PrismGist links the evidence and keeps uncertain cases conditional.
Latest source-checked guides
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UK Contactless eGates: Do You Still Need Your Passport?
Carry your passport even with contactless UK eGates. Check initial eligibility, airport rollout, family conditions and the fallback before you travel.
Refundable vs Non-Refundable Hotels: How Much Extra Is Flexibility Worth?
Compare hotel totals, payment timing, cancellation deadlines and money at risk. See when a 30 premium buys useful flexibility—and when it does not.
ChatGPT Audio Uploads: When to Use Them—and When Not To
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Ryanair’s 60-Minute Check-In Rule: Who Is Affected from 10 November?
Ryanair airport check-in and bag drop move to 60 minutes before departure from 10 November 2026. Check who needs a desk visit and plan your airport transfer.
Airport Lounge vs Restaurant: Is a Day Pass Worth It?
Compare a lounge day pass with your real restaurant spending, usable time and guest fees. A decision tree and fictional solo, couple and family examples.
Airport Hotel for a Layover: Airside or Landside, and How Much Rest Will You Get?
Check airside or landside access before booking a layover hotel. Calculate usable room time, compare booking blocks and total cost, and know when to skip the stay.
Travel Adapter vs Voltage Converter: Read Your Charger Label Before You Pack
Read AC input voltage and frequency before buying a travel adapter or converter. Use three worked label examples and a packing checklist to choose your next step.