Trains from Knebworth to Portsmouth from $19.43*

Arriving in Portsmouth

Every day, up to 70 train depart from Knebworth and arrive in Portsmouth, with the shortest journey taking 3h 3m minutes.

Book cheap train tickets from Knebworth to Portsmouth

It doesn’t need to be difficult to find cheap train tickets from Knebworth to Portsmouth. If you know where to look and how to take advantage of available discounts and travel options, then saving money with Trip.com becomes second nature. Here are some of our top tips to help you save money on your train travel.

Book in advance to save an average of 61%

Did you know that purchasing Advance Tickets can significantly reduce your travel expenses? On average, these tickets can save you an impressive 61% on fares. The best part is that the earlier you book them, the greater the savings. It's recommended to secure your Advance Tickets as soon as possible, ideally up to 12 weeks in advance. By doing so, you'll not only enjoy substantial discounts but also have peace of mind knowing that you've secured the most affordable option for your journey from Knebworth to Portsmouth.

Get 1/3 off with a Railcard

Railcards offer discounts of up to 1/3 on most tickets. There are various types of Railcards available to cater to different groups of travelers, such as the 16–25 Railcard, the Family & Friends Railcard, and the Senior Railcard. For more information on Railcards and how they can help you save, visit Railcards here.

Travel in a group to save 1/3

If you are planning a trip with a group of three to nine people, there's good news for you! You can take advantage of group travel discounts that are offered by many train companies. These discounts can save you up to 1/3 on off-peak fares, making your journey from Knebworth to Portsmouth more affordable. Whether you're traveling with your family, friends, or colleagues, the group save options make it easier for everyone to enjoy the benefits of discounted fares while embarking on a memorable trip together.