Completing a Request for Travel Authorization (RTA) is the first thing you should do when you start planning a trip for employees, prospective employees, or students using a centrally billed airfare or requesting reimbursement for travel on university business.
How to apply for an Electronic Travel Authorization (eTA) Applying for an eTA is an easy online process. Applicants will need a valid passport, a credit card, and an email and can get their eTA approval via email. The application is then stored and linked to the applicant's passport number.
The travel document usually arrives within 150 days (sometimes longer) after submitting your application. You can't leave the country until you have your approved travel document in hand, so you should expect to spend the 3–5 months after submitting your green card application in the United States.
Select “Traveler.” Select “Air”, then select “Continue” to begin. Select “Scan Passport” and scan the information page of your passport. Select “Advance Travel Authorization”, then select “Request Advance Travel Authorization.” First time users will be prompted to create a profile.
Who already have a visa in their passport. Travelers may wish to avoid buying plane tickets until they have obtained an ESTA (or a valid visa, in case the ESTA is not approved). ESTA applications may be submitted at any time prior to travel. The processing of an ESTA can take up to 72 hours.