Living in London is horribly expensive, but being so close, European travel from the UK is often similar in price to travel within the UK. As well as Eurostar there are many cheap flights and both can be similar to the costs of train travel within the UK.
Brexit has sunk the pound so the costs of holidays abroad will be relatively more expensive now, but as kids we often took summer holidays in France because it cost less than going somewhere in the UK.
I get that but, unless you're earning £100k+/year, hopping on the train to France every weekend to go practice your French is prohibitively expensive and not realistic
Doing it every weekend would be prohibitively expensive, but then so would taking the train to Manchester or anywhere else a similar distance within the UK.
Now living in the west coast of the US I really miss the freedom to visit so many different places for so little, whether that be cheap Eurostar fares or cheap budget airline flights.
How expensive is plane travel in the US compared to the EU? The language won't change, but the variety of the US is pretty immense. You could hop on a plane from LA and be in the Texas desert, or the peaks and snow in Colorado, or the Great Lakes, or the swamps in the South. And even leaving the States, tropical islands of the Bahamas are only 5 hours away, Canada is three or four, and Mexico is even closer. I would have expected air travel to be cheaper relatively speaking in America than Europe, especially with the higher salaries. The environmental impacts of all the flying aren't great though obviously.
Where budget airlines exist in the US the fares are comparable, they just fly far fewer routes than in Europe so you often end up paying standard airline prices.
The variety of the US is immense, but its size is immense too! San Francisco-New York is three quarters the distance of London-New York and the western half of the US is practically empty other than the coast.
Looking at my old email receipts I have a lot of £50 each way tickets from RyanAir and EasyJet. My last trip to Mexico was $200 each way (though that was at least twice the distance, Mexico is huge too!)
Brexit has sunk the pound so the costs of holidays abroad will be relatively more expensive now, but as kids we often took summer holidays in France because it cost less than going somewhere in the UK.