If the UK proceeds with a hardline Brexit, travel between the UK and Europe is likely to get a lot more stressful for residents of Britain. Failure to reach a deal with the European Union prior to the UK’s departure could result in a serious disruption of travel between the UK and EU. If Brexit proceeds without a solid outline of the UK’s future relationship with the EU, travel restrictions could be just one of many new inconveniences British citizens will have to face.

To prepare citizens for the prospect of a “no deal” Brexit, the UK government released a set of preparation documents. “If the UK leaves the EU in March 2019,” they state, “with no agreement in place, UK and EU licensed airlines would lose the automatic right to operate air services between the UK and the EU without seeking advance permission.” Britain has promised to unilaterally give European airlines permission to land at British airports, but there is no guarantee that the EU will reciprocate. It would probably mean a disruption in airline service, at least temporarily.

Right now, the UK can operate any air route within the EU, but in a “no-deal scenario,” the UK would have to negotiate hundreds of new air service agreements, which could take quite some time. In addition to potentially grounding flights for a while, this process is also likely to increase ticket prices for British customers.

British pet owners would also need to prepare for travel “at least four months in advance of the date they wish to travel,” now being required to provide pet vaccination records, a health certificate, and report to a designated entry point upon arrival.

Since Brexit would remove the UK from the single market, UK passport holders will be considered “third-country nationals” — a term used to designate citizens of non-EU countries. With this designation, passports may require immediate renewal before they can be considered valid for EU travel.

H/T: Secret Flying

More like this: Europe travel guide