# AI 告诉免签旅客，如果只是通过英国（如希思罗机场）转机前往第三国，则无需英国ETA

- **ID:** `visa/uk-eta-transit-exemption`
- **领域:** visa
- **类别:** pre_travel_authorization
- **错误码:** `ETA-TRANSIT-EXEMPT-ERR`
- **验证级别:** ai_generated
- **修复率:** 82%

## 根因

英国电子旅行授权（ETA）要求自2023年11月起对非欧洲国籍旅客生效，并于2025年4月扩展至欧洲国籍旅客，适用于所有免签旅客在英国转机（包括希思罗机场或盖特威克机场的机场内中转），没有ETA中转豁免，这与旧版英国转机签证（DV）允许部分国籍旅客无需签证转机不同。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| uk_eta_policy | active | — | — |
| uk_transit_visa_old | active | — | — |

## 解决方案

1. ```
   Apply for a UK ETA online via the official UK government website (gov.uk/eta) at least 72 hours before departure; cost is £10 (as of 2025) and approval is typically instant or within 24 hours.
   ```
2. ```
   If the traveler is a national of a country that is not visa-exempt for the UK (e.g., India, China), they must apply for a UK Transit Visa (cost £70) and ensure they meet the requirements (e.g., onward ticket, no intention to work).
   ```
3. ```
   For travelers with a US, Canadian, Australian, New Zealand, or Singapore passport who are only transiting airside and have a connecting flight within 24 hours, check if they qualify for the UK Electronic Travel Authorization (ETA) waiver for specific nationalities (e.g., US citizens can use ESTA-like system, but ETA is mandatory as of 2025).
   ```

## 无效尝试

- **** — The UK ETA policy explicitly removes the transit exemption for all visa-exempt nationals; travelers without an ETA will be denied boarding by airlines or refused entry at UK border. (95% 失败率)
- **** — The UK Transit Visa is only for non-visa-exempt nationals; visa-exempt travelers must use ETA, and applying for a Transit Visa will be rejected or cause delays. (85% 失败率)
- **** — Leaving the airport requires entry clearance; even airside transit requires ETA for visa-exempt travelers; border force will deny entry and may impose fines or bans. (90% 失败率)