Every now and again' and 'occasionally' have the same meaning as 'sometimes'. When you are 'on your own' this means to be unaccompanied by any other person.
「Every now and again」「occasionally」は「sometimes」と同じ意味です。「on your own」は他の人に伴われないという意味です。
The three sentences you see above are great ways to let your listener know that you like to travel alone. In the first sentence you will see the phrase all alone and in the third sentence you will see the phrase on one's own. Both of these phrases mean alone. We use these phrases a lot in our everyday conversation and they would make a great addition to your vocabulary.
Sometimes means to do something not very often or occasionally (not all the time) you could also say now and then as well.
If you are travelling solo you usually say you are travelling by yourself or alone not with anyone else.
sometimesとは、あまり頻繁ではなく時々（いつもではない）何かをすることを表します。同じ意味で、now and thenも使えます。
一人で旅行に行く場合、travel alone/by yourself（一人で旅行に行く）がよく使われます。
There are many phrases you can use to explain that you sometimes do things but not all the time. For example: sometimes, occasionally, once in a while, every so often, from time to time, at times, and off and on.
To explain that no one goes with you on the trip you can say: alone, solo, by myself, unaccompanied.
For example: From time to time, I travel unaccompanied. Every so often, I travel by myself.
いつもではなくて、時々することを表す時に使えるフレーズはたくさんあります。
例えば：
sometimes, occasionally, once in a while, every so often, from time to time, at times, off and on
1人で旅行に行くことを表し場合は次の表現が使えます：
alone, solo, by myself, unaccompanied
例文
From time to time, I travel unaccompanied.
Every so often, I travel by myself.
（時々1人で旅行に行きます）
イギリス 
インド 
アメリカ合衆国 
