KeyFlight Blog
Guides on flight reservations for visa applications, onward tickets and flight itineraries: what each document is, who checks it and how to get it.
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Flight Booking Status Codes: What HK, HL, KK, UN and TK Mean
What the two letters next to each flight in a booking mean: HK, HL, KK, TK, UN and more, what HK1 and HK2 stand for, and what confirmed does not prove.
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PNR Number: What It Looks Like and How to Check It
A PNR number is the six-character code of a flight booking. An example, how it differs from the 13-digit ticket number and where to check it online.
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Travel Itinerary for a Visa Application: What to Include
What a day-by-day travel itinerary for a visa should show, which Schengen checklists ask for one, a sample layout and how to match it with other documents.
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Do You Need a Flight Ticket to Apply for a Visa?
Most visa applications ask for travel plans, not a paid ticket. What the EU, UK, US and Canada say, what to show instead, and when to buy the real ticket.
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Temporary Flight Reservation: How It Works and How Long It Is Held
What a temporary flight reservation is, why the airline cancels it if no ticket is issued, how long the hold lasts and how to time it for a visa appointment.
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Proof of Onward Travel for Digital Nomads: The Complete 2026 Guide
Digital nomad? What proof of onward travel airlines and immigration ask for, which countries check it, and how to get it without buying a flight you won't take.
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Dummy Ticket: Complete Guide for Visa Applications
What a dummy ticket is, what consulates accept with a visa application, how to get a flight reservation without buying the ticket, and mistakes to avoid.
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Onward Ticket: What It Is, Which Countries Ask for It and How to Get One
What an onward ticket is, what the official rules of 8 destinations say about proof of onward travel, whether a reservation counts and how long it lasts.
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Can You Get a Flight Itinerary Without Paying? Free and Legitimate Options
Need a flight itinerary for a visa or onward travel before you buy a ticket? The free and paid options, what each one really is, and which to use when.
