The answer is no. Although no one really knows what will happen, when it will happen or even if Brexit will happen at all, it doesn’t look like all travel will be halted come 29th of March.
Will I be stranded at my holiday destination?
There’s been talk that planes will not be allowed to fly between the UK and the EU in case of a no-deal Brexit. In December the European Commission proposed a set of no-deal contingency plans, which, if approved by the EU27 and European Parliament, will still allow direct flights between the EU and the UK for a period of 12 months after March 30. So, I’m afraid that the ‘I-can’t-come-to-work-because-I’m-stranded-on-my-holiday’ excuse is not going to fly.
However, for whatever reason you find yourself stuck somewhere because of Brexit it could work out safer to book a package holidays which is ABTA protected rather than booking flight and hotels separately. Also, an encompassing travel insurance will offer additional protection. Brexit will be considered outside of the airlines’ control so they're not likely to compensate passengers in case they're stranded as a result of it.
We’ve seen the pound go up and down like a yo-yo and worries that a no-deal Brexit would slash the value of sterling even more, could be eased by getting one of those pre-paid currency cards or exchange pounds for the currency of the upcoming holiday destination. Another thing that could be affected are the mobile phone roaming charges. If a deal is struck between the UK and the EU, this will continue until the end of 2020 after which mobile phone companies could increase these charges. If a deal is not reached, the government says that it will make sure that roaming charges will be capped at £45 per month.
Will those passport e-gates still let me through?
Yes, they will. Apparently, Brits can still use the EU citizen lanes for border security. The red EU passports will still be valid until their actual validity date after which they can be exchanged for a blue one. UK citizens also won’t need a visa if they’re going on a holiday to any of the EU countries, however they will need to pay 7 Euro under the new European Travel Information and Authorization System which is kind of like the ESTA system for people travelling to the States.
Uncertainty seems to be the key word here, but whatever happens, travelling is not likely to come to a complete stop on the 29th of March.