| Open-jaw routing benefit | Avoids backtracking on linear itineraries |
| Layover definition | Connection under 24 hours (General airline industry convention) |
| Stopover definition | Planned break of 24 hours or more (General airline industry convention) |
| CFAR reimbursement range | Typically 50–75% of prepaid costs (General insurance industry range; varies by policy) |
| ETA vs. visa | ETA is not a visa; required before boarding |
| Onward ticket requirement | Required for entry in many countries (Verify with destination's official entry authority) |
Why Travel Jargon Matters Before You Book
Travel planning is full of shorthand that agencies, airlines, and booking platforms use as though everyone already knows it. When you understand what terms like open-jaw, visa on arrival, or fare class actually mean, you make smarter decisions — and avoid costly surprises. This quick-reference guide decodes the vocabulary you'll encounter most often as a US traveler building an itinerary from scratch.
Whether you're mapping out your first international trip or finally tackling a multi-city route, use this page alongside our guide to the anatomy of a well-planned trip to connect the vocabulary to real planning decisions.
Open-jaw flight
A routing where you fly into one city and depart from a different one, eliminating the need to backtrack. Common in multi-country itineraries.
Fare class
An alphabetical code that defines the rules attached to an airline ticket — including change fees, refund eligibility, and mileage earning — independent of the physical cabin.
Visa on arrival (VOA)
A visa granted at the port of entry rather than through an advance application. Eligibility is tied to passport nationality and is subject to change.
Electronic Travel Authorization (ETA)
A pre-approved, electronically linked travel permission required by certain countries for passport holders who don't need a full visa. Must be obtained before departure.
Stopover
A deliberate break of 24 hours or more in a connecting city, sometimes available at little or no extra cost depending on the airline and route.
Minimum connection time (MCT)
The airport-specific shortest interval between two connecting flights. Booking below MCT on separate tickets carries significant risk of missing the second flight.
Cancel for any reason (CFAR)
An optional insurance upgrade that broadens cancellation coverage beyond listed perils, typically reimbursing a percentage of prepaid costs. Purchase windows are often narrow.
Evacuation coverage
Travel insurance protection that covers emergency medical transport costs — ambulance, air ambulance, or repatriation. Separate from standard medical expense coverage.
Flight & Routing Terms You'll Encounter
Airline terminology shapes almost every booking decision you make. Here are the most important concepts:
- Open-jaw flight: You fly into one city and depart from a different one — useful for linear itineraries where backtracking wastes time. For example, fly into Paris and out of Rome.
- Codeshare: Two airlines share the same physical flight but each sells tickets under their own flight number. Your booking may show one carrier while you board another.
- Fare class / booking class: A letter code (like Y, K, or Q) that determines the rules and restrictions on your ticket — not just the cabin level. Two seats in economy can have completely different change and cancellation policies based on fare class.
- Layover vs. stopover: A layover is typically a connection under 24 hours. A stopover is a planned break of 24 hours or more at a connecting city, sometimes offered for free or a small fee on certain airlines.
- Minimum connection time (MCT): The shortest allowable gap between two connecting flights at a given airport. Booking below MCT on separate tickets creates real risk — the second carrier owes you nothing if you miss the flight.
| Open-jaw routing benefit | Avoids backtracking on linear itineraries |
| Layover definition | Connection under 24 hours (General airline industry convention) |
| Stopover definition | Planned break of 24 hours or more (General airline industry convention) |
| CFAR reimbursement range | Typically 50–75% of prepaid costs (General insurance industry range; varies by policy) |
| ETA vs. visa | ETA is not a visa; required before boarding |
| Onward ticket requirement | Required for entry in many countries (Verify with destination's official entry authority) |
Entry, Visas & Documentation Basics
Entry requirements vary widely and change without warning. Always verify current rules directly with official government sources (the US Department of State and the destination country's embassy or consulate) before you travel.
- Visa on arrival (VOA): A visa issued at the port of entry rather than in advance. Eligibility depends on your passport and the specific country's rules. Some destinations have replaced VOA with e-visa systems.
- Electronic Travel Authorization (ETA): A pre-travel electronic approval linked to your passport, required by countries like Canada and Australia for visa-exempt travelers. It's not a visa, but you must have it before boarding.
- ESTA: The US equivalent for visitors from Visa Waiver Program countries entering the United States. US travelers leaving for those countries don't need one — but many similar schemes apply going the other direction.
- Onward ticket requirement: Many countries require proof that you plan to leave before granting entry. A return flight or an onward booking to a third country typically satisfies this.
For a broader look at how these requirements factor into itinerary building, the planning approaches that work across any destination article covers documentation checks as part of a repeatable pre-trip checklist.
Travel Insurance & Protection Terms
Travel insurance contracts are loaded with terms that matter enormously when something goes wrong. Understanding them before you buy is essential — general information here is not a substitute for reading your actual policy.
Travel Insurance Is Not One-Size-Fits-All
Policy terms differ significantly between providers, and coverage that applies in one plan may be excluded in another. Always read the full policy document — specifically the definitions and exclusions sections — before purchasing. This article provides general educational information about common insurance terms, not advice about any specific policy or provider.
- Cancel for any reason (CFAR): An optional upgrade that allows cancellation for reasons beyond the standard covered list, usually reimbursing 50–75% of prepaid costs. It typically must be purchased within a set window of your initial trip deposit.
- Pre-existing condition waiver: Some policies exclude medical expenses related to conditions that existed before purchase. A waiver removes that exclusion if purchased promptly after your first trip payment.
- Trip interruption vs. trip cancellation: Cancellation coverage applies before departure; interruption coverage kicks in if something forces you to cut a trip short after it has begun. Both have separate limits.
- Evacuation coverage: Covers the cost of emergency medical transport — potentially very expensive for remote destinations. Distinct from standard medical coverage, which may not pay for transport costs.
See our related glossary of accommodation booking terms for the vocabulary that comes up once flights are settled and you're choosing where to stay.