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The booking process

Book cheap flights: what actually happens, step by step

This page is the process, not the theory. If you want to understand fare buckets, advance-purchase cliffs and why fares move, read cheap flights first — then come back here to book.

  • What to have ready
  • Name matching to ID
  • Payment, 3DS and ticketing
Full fare, disclosedTaxes, carrier charges and our own fee quoted as one number before you pay.
Every fee publishedOur post-ticketing charges are listed in full, not revealed at checkout.
24-hour risk-free windowThe US DOT cancellation right, honoured without a service fee.
Nothing added by defaultNo insurance, seat or extra goes on your booking unless you ask for it.
Five steps

Search to e-ticket

Nothing here is unusual. It is written down because knowing the order of events tells you where a booking can go wrong and what to check at each point.

  1. Search and shortlistUse the form above or call with your dates. An advisor prices the itinerary against published, contracted and branded-fare inventory and reads you the totals with the rules attached to each.
  2. Passenger details and name checkLegal names as printed on the travel document, dates of birth, and passport data for international travel. Every name is read back before anything is ticketed.
  3. Fare rules read to youBaggage allowance, seat assignment, whether the fare is changeable and at what cost, whether it is refundable, the 24-hour window, and any service fee. Nothing is inferred.
  4. Payment and authenticationCard authorised through the payment processor’s secure channel, with 3-D Secure where your issuer requires it. The quoted total is the charged total.
  5. Ticketing and confirmationThe e-ticket number is generated against the reservation and your written confirmation is emailed. Check the name spelling and the flight times the moment it arrives.

Before you call: what to have in front of you

A flight booking takes four or five minutes when the information is ready and twenty when it is not, and the difference matters because fare availability moves while you look for a passport. Have the following to hand for every passenger: the full legal name exactly as it appears on the travel document they will present, date of birth, and gender as recorded on that document. For international travel, add the passport number, issuing country and expiry date.

Then the trip itself. Which dates are genuinely fixed and which could move by a day. Which airports you can realistically use, including any second field within driving distance. Whether you need a checked bag. Whether you are connecting to something fixed at the other end — a cruise departure, a wedding, a rental counter with published closing hours. Whether anyone in the party needs assistance at the airport, is travelling with an infant on lap, or is an unaccompanied minor.

Finally, the money. A payment card in the name of a person who will be reachable to authorise the charge, and a rough ceiling. Telling an advisor your budget does not make the fare go up — fares are filed by the airline, not set by us — but it does stop us spending your time quoting cabins you were never going to buy.

Names, ID and why exactness is not pedantry

The name on an airline ticket is matched against the government-issued document you present at check-in and at the gate. For international travel that is your passport; for US domestic travel it is a REAL ID-compliant driver's licence or another form of identification TSA accepts. If the two do not match, the airline is entitled to refuse carriage, and the fact that an agency made the typo does not change that.

What airlines permit by way of correction varies more than travellers expect. A minor misspelling of one or two characters is often fixed free of charge. A changed surname after marriage usually requires documentation. A wrong first name, a missing middle name where the fare requires it, or a name in the wrong field can require a reissue at fare difference — and on some restricted and negotiated fares, a name cannot be corrected at all and the ticket must be cancelled and rebought.

Our practice is therefore to read every passenger name back, character by character where necessary, before ticketing, and to spell out anything ambiguous. Read your confirmation the moment it lands. A correction requested within minutes is almost always straightforward; the same correction requested the night before departure frequently is not. Where a correction does carry a charge, our part of it is published in the service fee schedule and the airline's part is identified separately.

Payment, 3-D Secure and the checks that look like friction

Payment is taken through the payment processor's secure channel. An advisor will not read your full card number back to you and we do not retain readable card data on our systems. Where your card issuer participates in 3-D Secure — the additional authentication step branded differently by each network — you will be asked to approve the transaction with a one-time code or through your banking app. That step is the issuer's, not ours, and it also moves liability for fraudulent use towards them, which is to your benefit.

Some bookings attract additional verification: a third-party cardholder, a high-value premium-cabin ticket, a same-day international departure, or a billing address in a different country from the point of sale. In those cases we may ask for a card authorisation form or a short verification call. Airlines take a hard line on tickets they believe were bought with a compromised card, up to cancelling them without notice, so the check protects your booking as much as it protects us.

One thing to expect: the quoted total is the charged total. Taxes, carrier-imposed charges and any Zeptotravel service fee are inside the figure you approve, in line with US DOT full-fare advertising rules. If a fare moves between quote and ticketing — which happens when a booking class empties while you are on the call — we stop and requote rather than charging a different amount. That situation and how we handle it is described in price accuracy and fare rules.

Ticketing: what happens between authorisation and your inbox

Two separate things happen when you buy a flight. First, a reservation is created — a passenger name record, the PNR, holding the seats and the passenger data, identified by a six-character airline record locator. Second, a ticket is issued against that reservation, generating a 13-digit electronic ticket number for each passenger. The ticket is the document of value; the PNR is only the container.

For the great majority of bookings both steps complete within minutes and the e-ticket receipt reaches you shortly afterwards. Some fares route through a ticketing queue instead. Negotiated and consolidator fares may need a validating action against the contract; group bookings are ticketed against a deposit schedule; a very small number of itineraries need a manual fare-construction check. Where any of that applies we say so on the call and confirm by email when the ticket number exists.

This distinction is worth holding onto, because it determines what you can do next. Seat assignments, frequent flyer numbers and special service requests attach to the PNR and can usually be added before or after ticketing. Anything involving money — a change, a refund, an upgrade — needs the ticket to exist first. The mechanics of managing the record afterwards are set out in flight reservations.

Reading your confirmation properly

Your confirmation is a document you should spend ninety seconds on, not file unread. Check the spelling of every passenger name against the passport or licence they will travel on. Check the date of each flight, including whether an overnight sector arrives the following day. Check the operating carrier, which on a codeshare is often not the airline whose flight number you booked — it determines whose baggage rules and whose check-in desk apply.

Then check the commercial detail. The fare breakdown should separate base fare, taxes and government charges, carrier-imposed surcharges and any service fee. The baggage allowance should be stated for both carry-on and checked, per passenger and per sector — compare it against our baggage reference if anything looks unusual for the route. The change and cancellation conditions of your fare should be stated in plain words, and the 24-hour risk-free cancellation deadline should be given as a date and time where it applies.

If anything is wrong, call the same day. Corrections made inside the risk-free window are usually costless; the same correction a month later frequently is not.

The first 24 hours, and what to book next

Tickets originating in the United States and issued at least seven days before departure carry a 24-hour risk-free cancellation window under US DOT rules — cancel inside it and the fare is refunded to the original form of payment. We honour that window without a service charge. Use it as a review period: confirm the names, confirm the connection times, confirm that the ground arrangements at the other end line up.

That is also the right moment to handle the rest of the trip. Seats are usually cheapest and best chosen early, covered in prebook seats; if you want a better seat in the same cabin, see upgrade seats. If a car is waiting at the other end, book it against the same file through car rental — a late-evening arrival into an off-airport branch that shuts at nine is the arrangement most likely to be broken by a retimed inbound, and it is the one an advisor holding both halves can move before it breaks. And if the plan changes entirely, flight cancellations explains what you get back, with the detail in our refund and cancellation policy.


Zeptotravel Travel Desk — Written and maintained in-house

Written by the team that will answer the phone, and checked against the published rules that actually govern your booking rather than against other travel blogs.

What this page is based on
  • US DOT consumer rules (14 CFR Part 259) on refunds and disclosure
  • Airline contracts of carriage and filed fare rules
  • Supplier rental agreements and published counter-charge schedules
  • US DOT full-fare advertising rule and 14 CFR Part 259
  • California CCPA/CPRA and comparable state privacy statutes
Published September 14, 2026Our editorial standards
Pre-call checklist

Have these five things ready

Names and dates of birth

Exactly as printed on the travel document each passenger will present. Include middle names and suffixes where the document shows them.

Passport data (international)

Number, issuing country and expiry for each traveller. Many destinations require validity beyond your return date — check before you book.

Fixed versus flexible dates

Tell us which constraint is real. One movable day is usually worth more than any other saving available on the trip.

Loyalty numbers

Frequent flyer and alliance numbers for every passenger, added at booking so accrual and any elite benefits attach from the start.

Assistance and special needs

Wheelchair assistance, infant on lap, unaccompanied minor, service animal, extra seat, dietary meal. These are requested on the record, not at the airport.

A card and an authoriser

The cardholder must be reachable to approve the charge, including any 3-D Secure prompt from their issuer.

Answers

Questions about the booking process itself

Answered against the rules that actually govern the booking — the carrier's filed fare, the rental agreement, the regulation — rather than from general advice.

How is this different from your cheap flights page?

Cheap flights explains how airline pricing works — fare buckets, advance-purchase cliffs, which myths are false. This page is the operational one: what to have in front of you, what an advisor will ask, how payment and ticketing run, and what your confirmation should contain. Read that page to decide what to buy; read this one to actually buy it.

What do I need to have ready before I call?

Full legal names exactly as printed on the travel document each passenger will use, dates of birth, the travel dates and any hard constraints, a rough cabin and budget, frequent flyer numbers, any special assistance needs, and a payment card in the name of someone who will be available to authorise the charge. If the trip is international, have passports to hand — we will need the number, issuing country and expiry.

Does my name have to match my ID exactly?

Yes, and this is the single most common cause of avoidable cost. The name on the ticket must match the government-issued document you will present — passport for international travel, and for US domestic travel a REAL ID-compliant licence or other accepted ID. Middle names and suffixes should be included where the document shows them. Airlines vary in how much of a correction they will permit; some allow a minor spelling fix free, others require a reissue at fare difference, and a very few require a new ticket. We read every name back to you before ticketing for exactly this reason.

How is payment taken and what is 3-D Secure?

Payment is processed through the card processor's own secure channel, not typed into a note at the desk. 3-D Secure is the additional authentication step your card issuer may apply — a one-time code, an app approval or a banking-app push. It exists to confirm the cardholder is present, and it also shifts liability for fraudulent use towards the issuer. If your issuer requires it, we will pause and wait for you to approve. We do not store readable card numbers and an advisor will never read your full card number back to you.

How long until I get my e-ticket?

Most tickets are issued within minutes of authorisation and the e-ticket receipt reaches your inbox shortly after. Some fares — particularly negotiated and consolidator fares, and some group bookings — are issued through a ticketing queue and can take a few hours. If your booking is in that category we tell you at the time of sale and confirm by email when the ticket number is generated. Until a ticket number exists you hold a reservation, not a ticket.

What exactly is in my confirmation?

The Zeptotravel booking reference, the airline record locator, the 13-digit electronic ticket number for each passenger, the full flight itinerary with operating carrier and flight numbers, the fare breakdown showing base fare, taxes, carrier-imposed charges and any service fee, the checked and carry-on baggage allowance, the change and cancellation rules for your fare, and the 24-hour risk-free cancellation deadline where it applies.

Can I book for someone else?

Yes. The cardholder must authorise the charge and must be identifiable, and for some carriers and fares we may ask for a signed card authorisation form or a verification call. That is a fraud-control requirement, not an inconvenience we invented — third-party card use is the most common vector for chargebacks in air travel, and airlines can cancel a ticket they believe was bought fraudulently.

What if I find a cheaper fare somewhere else after we speak?

Tell us before you pay and we will look at the same itinerary and explain any difference — usually it is a different fare family, a self-transfer on separate tickets, or an excluded baggage allowance rather than a genuinely lower total. If the other fare really is better on a like-for-like basis, book it. We would rather lose the booking than have you overpay and find out later.

Ready to book — have your details to hand

Names as printed on the passport, dates, and a card the holder can authorise. An advisor will read the fare rules back before anything is charged.

Speak to a person before you bookTaxes and fees shown before you payFee schedule published in full24-hour risk-free cancellation

All taxes included · Fees shown up front