Your best bet for creating fast growth is to try and get the people who currently promote your competitors to convert to your service.

For example, start showing domain expertise in places like Reddit's /r/digitalnomad and /r/travel, hashtagnomads.com, nomadforum.io, and other sites where people are frequently asking questions about (and actually booking) flights and hotels.

Once you've developed a reputation, you can start working on partnerships with key influencers in the space (affiliate links, etc.) to encourage more links and referrals to your service.

I used this strategy, along with strong inbound marketing on the site itself, to grow a digital agency to the point it couldn't take on additional work.

Feel free to hit me up for a call if I can answer any follow-up questions or go over specific strategies.

Good luck!