It’s as easy as counting 1-2-3 with Expedia. First, enter your travel dates and destination and click on “Search.” Next step? Check “No change fee” just below the “Flexible change policies” heading on the top left of your screen. Step 3. Nab a cheap and flexible airfare to Pennsylvania.

Choose from various airlines that offer flights into or near Pennsylvania. Here are some of the best of them:

• American Airlines - 7,968 flights to or near Pennsylvania each month, including 6,663 flights to Philadelphia Intl. Airport (PHL) and 945 flights to Pittsburgh Intl. Airport (PIT) per month.
• Delta Air Lines - 1,456 flights to or near Pennsylvania each month, including 771 flights to Pittsburgh Intl. Airport (PIT) and 567 flights to Philadelphia Intl. Airport (PHL) per month.
• United Airlines - 1,183 flights to or near Pennsylvania each month, including 637 flights to Pittsburgh Intl. Airport (PIT) and 394 flights to Philadelphia Intl. Airport (PHL) per month.

An excellent strategy for scoring cheap fares is to be flexible with your travel dates. Begin with searching for your flight to Pennsylvania, then click on the “flexible dates” link for a list of prices for nearby days. Want another good tip? Book well in advance. To give you an idea of fares, €177 was the lowest price for a flight to Pennsylvania in the last seven days.

There were a lot of inexpensive fares up for grabs in the last seven days, with the price of a return flight to Pennsylvania ranging between €177 and €481. Many lucky travellers purchased one-way flights from Chicago (MDW) for only €89.

Book a flight to Pennsylvania and you’ll have a few main airports to choose from. Here are three of the region’s busiest:

• Philadelphia Intl. Airport (PHL) - 9,429 flights per month.
• Pittsburgh Intl. Airport (PIT) - 3,702 flights per month.
• Harrisburg Intl. Airport (MDT) - 719 flights per month.

In the last seven days, flights to Pennsylvania varied between €177 and €481. Prices depend on multiple things, particularly the departure time, cabin class, airline and how early you make your booking.

Summer begins June 20 in the Northern Hemisphere, and these warmer months are a good time to travel to the thrilling Pennsylvania city of Philadelphia. Average temperatures range between 21ºC and 29ºC across the season. The biggest crowds flock here in May, July and August.

The ideal month to land a great deal to Pennsylvania is February, while prices are at a premium in December. Give this month a miss if you’d like to save money.