The are 11 different ways across 4 unique modes of transportation to help you travel from APG to Burke. If you're only considering the price, you should check out the train out of ABE towards ALX, as it is the cheapest to Burke. It's common to find tickets for as low as $14. Amtrak operates from APG to Burke, so you book your trip with them! Take the train, it is cheaper and more comfortable than the bus!
On your trip from APG to Burke, it is best to book as soon as possible. It won't necessarily help reduce your price by a large amount, but will ensure that you have a spot on the bus or train. Shuttle service may be available to Burke. If you're traveling with a large group, you should probably take a shuttle as it will reduce the price per person. Alternatively, there are shared shuttle services available. With this option, you'll want to book as soon as possible to allow the shuttle service enough time to coordinate your pickup and dropoff.
While buses have recently gotten bad coverage because of cleanliness of bus stations or winter time accidents, they are can be very convenient for travel. The best part about traveling by bus to Burke is that it can be very cheap. That's because they usually have basic accomodations - WiFi and a restroom. Some of the APG/Burke buses' coverage has been overstated. The real thing to consider when taking a bus from APG is to consider the time of travel and the density of the cities that you're traveling to. If you are traveling by bus between APG and Burke during high traffic times, you can expect to have your trip altered significantly due to traffic. Further, if you are traveling during winter, the bus schedule might be thrown off due to inclimate winter weather. Be sure to plan accordingly!
The plus side of taking the train from APG to Burke? The accomodations, scenery, and lack of Burke traffic can usually be on point. Moreover, you can usually expect your average concessions - such as food and drinks. Most trains have WiFi these days as well. The worst part about trains are the price. While the train to Burke is often cheaper than flying, they are generally more expensive than buses. Train prices are usually set and do not vary as much as bus prices or flights or so the likelihood of finding discounts is pretty rare.