US ESTA: 7 Mistakes That Get Applications Rejected
Small Typo, Big Problem
ESTA applications get rejected for predictable reasons. After reviewing community reports and official CBP guidance, these seven patterns account for nearly all denied or delayed applications. Most are fixable in minutes — but only if you catch them before clicking submit.
1. Passport Number Off By One Character
The number one rejection reason is a passport number typo. Letters and numbers that look alike — O and 0, I and 1, S and 5 — are the usual culprits. Read your passport number directly from the machine-readable zone at the bottom of the bio page, not from the printed number at the top. After entering, read it backward character by character — your brain auto-corrects what it expects to see, so reversing catches errors.
2. Not Actually Eligible for VWP
The Visa Waiver Program covers 42 countries, but eligibility is not just about citizenship. If you have visited Iran, Iraq, North Korea, Sudan, Syria, Libya, Somalia, or Yemen since March 2011 (or Cuba since January 2021), you are generally ineligible for ESTA and must apply for a B1/B2 visa at a US embassy. Dual nationals of VWP countries who also hold Cuban, Iranian, Iraqi, Sudanese, or Syrian nationality face the same restriction. This rule was tightened in 2024, so even travelers who previously held an approved ESTA may find themselves ineligible upon renewal.
3. Name Mismatch With Passport
Your ESTA name must match your passport exactly. Middle names are required if they appear in the passport bio page. Hyphenated surnames need to match precisely — if your passport says SMITH-JONES, do not enter SMITH JONES or SMITHJONES. Travelers with single names should enter their given name in the surname field and FNU (First Name Unknown) in the given name field — this is the CBP-recommended convention.
4. Wrong Answer to Security Questions
The eligibility questions ask about criminal history, communicable diseases, drug offenses, and prior visa denials. If you were arrested but not convicted, you still need to answer yes to the arrest question — CBP can see arrest records regardless of outcome. A DUI in some countries triggers the criminal offense question even if treated as a traffic violation locally. When in doubt, disclose. A yes answer does not automatically disqualify you — CBP reviews each case, while a false no answer can result in a permanent ESTA ban.
5. Paying Through a Third-Party Site
The official ESTA fee is USD 21 as of August 2026. The only official website is esta.cbp.dhs.gov. Third-party sites charge USD 50-100 for the same form, and some submit incorrect data that causes rejections. A quick test: search Google for ESTA and look at the URL — if it is not a .gov domain or starts with ads, scroll past it. CBP does not advertise ESTA on Google.
6. Reapplying Instead of Updating
If your travel dates or flight number change, you do not need a new ESTA — update the existing one on the CBP website. Reapplying costs another USD 21 and creates a second record that can cause confusion at check-in. The only reasons to reapply: new passport, change of name, change of gender, change of citizenship, or eligibility answers that are no longer accurate.
7. Leaving It Until the Last Day
While most ESTA applications are approved within minutes, some are flagged for manual review and can take up to 72 hours. Airlines recommend applying at least 72 hours before departure. Applying at the airport check-in counter is a gamble — if flagged, you will miss your flight. CBP also recommends checking your ESTA status at least a week before travel, since revocations do happen, usually due to new information received between approval and travel.