If travelling to mainland Europe for University business could you travel by train rather than plane? Travelling by Eurostar and conventional train significantly reduces the carbon emissions of your trip. Plus once you factor in travelling to the airport and check in times the time difference may be minimal with a less stressful journey.
You can book Eurostar online via Key Travel whilst the dedicated support team can help with trains in mainland Europe.
This website 'The Man in Seat 61' has a wealth of information on travelling by train to Europe and further afield.