book online
/bʊk ˈɒnˌlaɪn/
Meaning
This phrase means to reserve or purchase tickets, hotel rooms, flights, or activities using the internet. It is a very common travel expression used when planning trips in advance. It highlights the convenience of securing arrangements digitally rather than in person or over the phone.
Examples
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It is usually much cheaper to book online than to buy tickets at the station.
It is usually much cheaper to book online than to buy tickets at the station.
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I decided to book online to make sure we got a room with a sea view.
I decided to book online to make sure we got a room with a sea view.
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If you book online, you can skip the long queues at the museum entrance.
If you book online, you can skip the long queues at the museum entrance.
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She managed to book online just before the flights sold out completely.
She managed to book online just before the flights sold out completely.
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Did you book online or did you call the travel agency directly?
Did you book online or did you call the travel agency directly?
Common Mistakes
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✗ I need to book on the online.
✓ I need to book online.
'Online' acts as an adverb here, so you do not need the article 'the' or the preposition 'on'.
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✗ We booked online the hotel.
✓ We booked the hotel online.
If you include the direct object (the hotel), it should go before the word 'online' rather than after it.
Related Expressions
Practice
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If you want to get the early bird discount, you should ___.
💡 Reserve your spot using the website.
Show answer
book online
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I always ___ because it saves me a lot of time at the airport.
💡 Use the internet to secure your ticket.
Show answer
book online