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Source Library
The Official Sources Behind Our Travel Answers
When rules, compensation policies, and international entry requirements can change, we start with the authority that actually issues the rule. This page shows the primary source hubs we use across the site.
General Air Travel Guidance
These official resources cover the basics of air travel, traveler protections, and international planning.
Transportation Security Administration
TSA Travel
General TSA travel guidance, security rules, and screening information.
Open source
U.S. Department of Transportation
Aviation Consumer Protection
Official DOT consumer resources for delays, refunds, baggage issues, and complaints.
Open source
U.S. Department of State
International Travel
Official U.S. international travel hub covering passports, destination info, and travel advisories.
Open source
Security Screening and Packing Rules
These are the primary references we use when travelers ask what can go in a carry-on, what must be checked, and how specific airport-security rules work.
Transportation Security Administration
What Can I Bring?
The TSA's searchable database for carry-on and checked-bag item rules.
Open source
Transportation Security Administration
Liquids Rule
The official 3-1-1 liquids guidance for carry-on bags.
Open source
Federal Aviation Administration
PackSafe
FAA guidance on batteries, hazardous materials, and items that create safety issues on aircraft.
Open source
Airline Policies, Delays, and Passenger Rights
We use these sources for compensation, controllable delays, cancellations, refunds, baggage issues, and other rights-related questions.
U.S. Department of Transportation
Aviation Consumer Protection
DOT hub for airline consumer rules, complaints, baggage, refunds, and enforcement.
Open source
U.S. Department of Transportation
Airline Cancellation and Delay Dashboard
The official dashboard showing what major U.S. airlines commit to provide during controllable disruptions.
Open source
U.S. Department of Transportation
Flight Delays and Cancellations
DOT guidance on airline obligations, refunds, and what travelers can expect after a delay or cancellation.
Open source
International Entry Requirements and Trusted Traveler Programs
For passport, ETA, ETIAS, customs, and trusted traveler questions, we start with the issuing government or border authority whenever possible.
U.S. Department of State
International Travel
U.S. travel-document and destination guidance, including passports and country information.
Open source
U.S. Customs and Border Protection
Trusted Traveler Programs
The official application and account portal for Global Entry and related trusted traveler programs.
Open source
GOV.UK
Apply for an Electronic Travel Authorisation (ETA)
The United Kingdom's official ETA guidance for eligible travelers.
Open source
Europe Entry Systems and Passenger Protections
We use these official European sources when travelers ask about ETIAS, air-passenger rights, and compensation rules across Europe.
European Union
ETIAS
Official ETIAS information for travelers visiting participating European destinations.
Open source
Your Europe
Air Passenger Rights
Official European passenger-rights guidance covering delays, cancellations, and denied boarding.
Open source
European Commission
Air Passenger Rights in the EU
European Commission guidance on passenger protections and how the rules apply.
Open source
How We Apply These Sources
Airline-specific guides are checked against each carrier's own baggage, cancellation, seating, pet, and contract pages. Airport guides are checked against official airport websites, terminal maps, parking pages, and ground transportation pages. When a traveler reports a change, we review the primary source and update the article when warranted.
