Getting a cheap flight to Oslo in Norway is not as difficult as it sounds. All it needs is a bit of research and a planning mind. The first thing to do when you are planning a trip to Norway is to decide the time of your travel. If it is inevitable that you travel during the peak season, then its best you plan your trip as well in advance as possible. This kind of a head start will allow you to get the best of ticket rates on airlines.
If you are a bit flexible with your dates, then you can look at travelling in the middle of the week and this often is when the prices of tickets are lowest. Tickets on Tuesdays, Wednesdays and Thursdays are generally the cheapest compared to the rest of the week and especially the weekends. Also keep in mind that flight rates change around midnight and then are revised further in the day. When you are doing your research on cheap flights to Oslo, make sure you look into these points as well.
Look through aggregator sites which give you in great deal all the flights to Oslo that you are looking for. This will help you compare airfare rates and make an intelligent choice. You can also look at an airline's own website to avoid paper processing charges. Look at package deals on roundtrips such as buy one get one free or a free night's stay in a hotel.
Combining your taxi as well as your hotel needs with your airfare can also help bring down the rate of the tickets. In the case of all package deals, make sure that you are looking into all the fine print. Many buy 1 get one free offers are limited to a particular airline and time band of travel. There are also clauses on when the free ticket can be redeemed and the like.
If you are still unsure of whether you are getting a good deal or not, get in touch with a trusted travel agent. Their years of contact with the travel industry put them in a better position to get you insider deals that are lot more easier on the wallet.