Do you know of any travel tour agency that can offer sightseeing tours including transportation and hotels when in Paris (example: Anderson Tours)?
It’s about £59 each way for an adult fare. People under 26 and seniors can get a discounted fare. There are also low cost carriers like Easyjet with one way fares around £70. Most of those carriers fly out of secondary airports, though, like from London Luton, so you do have to factor in the extra cost of getting there.
You might want to checkout Rick Steve’s Wall which is just for travel within Europe or TripAdvice for more advice. Both sites are laid out really well & informative.
Happy travels!

It's about $100 each way for an adult fare. People under 26 and seniors can get a discounted fare. There are also low cost carriers like Easyjet with one way fares around $45. Most of those carriers fly out of secondary airports, though, like from London Luton, so you do have to factor in the extra cost of getting there.
You might want to checkout Rick Steve's Graffiti Wall which is just for travel within Europe or TripAdvisor for more advice. Both sites are laid out really well & informative.
Happy travels!
References :
http://www.ricksteves.com/graffiti/graffiti_menu.htm