What ESTA is and who qualifies
ESTA is an automated online system that determines whether citizens of Visa Waiver Program (VWP) countries are eligible to travel to the US for stays of up to 90 days for tourism, certain business activities, or transit. As of 2026, 42 countries participate in the VWP, including the UK, Germany, France, Japan, South Korea, Australia, and New Zealand. The application is entirely online (cbp.gov/esta), costs $21, and approval is typically received within minutes to 72 hours.
ESTA authorization is valid for 2 years or until your passport expires, whichever comes first — and covers unlimited trips to the US during that period, each limited to 90 days. You must apply before boarding a carrier to the US, and airlines will check ESTA status at check-in.
Key limitations of ESTA vs a B-2 visa
ESTA is strictly limited to 90 days per visit — there is no extension mechanism. Unlike B-2 visa holders who can file Form I-539 to extend their stay, ESTA travelers cannot extend their authorized stay under any circumstances. They also cannot change their status to another visa category (such as F-1 student or H-1B) from within the US — they must depart and apply for the appropriate visa abroad.
ESTA is also not available to travelers who: have been denied a US visa, have been refused entry to the US or deported, have ever been arrested even if not convicted (in some cases), are nationals of a VWP country who also hold citizenship in Cuba, Iran, Iraq, Libya, North Korea, Somalia, Sudan, Syria, or Yemen, or who have visited those countries since March 1, 2011. Any of these factors requires applying for a B-2 visa instead.
When a B-2 visa is better than ESTA
A B-2 visa is preferable when: you need more than 90 days in the US, you want the ability to extend your stay with I-539, you may need to change status to F-1 or another category, or you have ESTA disqualifying factors in your travel or nationality history. B-2 visas can be issued for up to 10 years (for many nationalities based on reciprocity) with multiple entries, each CBP-determined stay of up to 6 months. The downside is the required embassy appointment and $185 fee.
Related Questions
Can I work in the US on ESTA?
No. ESTA authorizes the same activities as a B-1/B-2 visa — tourism, visiting family, certain business activities (meetings, conferences, contract negotiations). You cannot receive compensation from a US source or perform skilled or unskilled labor.
What happens if I overstay my ESTA 90-day limit?
Overstaying an ESTA voids the authorization and makes you ineligible for future ESTA travel. You will face unlawful presence bars if you stay more than 180 days. ESTA violations can affect future visa applications.
Does ESTA guarantee entry to the US?
No. ESTA authorization means you can board a plane to the US, but a CBP officer at the port of entry makes the final admission decision. You can be refused entry even with a valid ESTA.
Is there a way to extend the 90 days allowed under ESTA?
No. ESTA travelers cannot extend their stay or change status from within the US. If you need more time, you must leave the US before your authorized stay expires and may re-enter on a new ESTA entry after a genuine break in travel.
Can citizens of non-VWP countries apply for ESTA?
No. ESTA is exclusively for nationals of the 42 VWP countries. Citizens of other countries must apply for a B-1/B-2 visa at a US embassy or consulate.
Official Sources
This guide is general information, not legal advice. Fees and processing times change; always confirm with the official government source before acting.