http://www.thomascooksport.com/Football/Premier-League/Chelsea#box2 It's £216 for the day trip, that includes a match ticket. Doing it this way would mean a lot of the hassle would be cut out. Although if you book it all separate it would probably work out cheaper and you could probably stay the night. At the moment you can get a flight on the day of the match arriving at 11:35 am, so plenty of drinking time, arriving back the next day at 9:25 pm for £135 through Ryanair. You can get a single room in Marseille for £35 a night through booking.com. This just leaves the match ticket which I'd assume will be between €30-40, only thing is you're not guaranteed a ticket whereas you are with Thomas Cook. This way obviously works out cheaper and you won't be completely knackered when coming back and can have a night out as well. If you have any more questions I will happily answer.