List of popular websites for cheap hotels bookings

https://www.airbnb.com/ (Recommended)

http://www.trivago.com

http://www.hotels.com/

http://www.booking.com/

http://www.tripadvisor.com/

https://www.expedia.com/
https://www.couchsurfing.com/ (Recommended for Solo Traveller and Cheap)

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Short stays & Long vacations & Luxury getaways: –

https://www.airbnb.com/

http://www.makemytrip.com/

http://www.yatra.com/

http://www.travelguru.com/

http://www.goibibo.com/

Last minute bookings: –

https://www.hotelsaroundyou.com/app (India – Via App Only)

https://www.oyorooms.com/

Home Stay & Stay with Locals: –

https://www.airbnb.com/

https://www.couchsurfing.com/

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Short  stays & Long vacations & Luxury getaways: –

Refer the Global Secton

Last minute bookings: –

https://www.airbnb.com/

Home Stay & Stay with Locals: –

https://www.couchsurfing.com/

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Short stays & Long vacations & Luxury getaways: –

Last minute bookings: –

Home Stay & Stay with Locals: –

https://www.homeaway.com/

https://www.vrbo.com/

Other Portals for Great Deals:

http://www.roomkey.com