CA $354 Cheap Flights from St. Louis (STL) to Pittsburgh (PIT)

You can find one-way and return flights from STL to PIT with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when STL to PIT ticket fares go up or down.

September is typically the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.), with average return fares around CA$416. September often sees lower prices as the summer travel rush ends and before the holiday season begins, leading to reduced demand. Other budget-friendly months to consider for your trip include February and December.

Only one airline offers direct flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.). Southwest Airlines operates 13 direct flights from Lambert-St. Louis Intl. to Pittsburgh Intl. every week.

Southwest Airlines is one of the cheapest airlines offering nonstop return flights from Lambert-St. Louis Intl. (STL) to Pittsburgh Intl. (PIT), with tickets starting from around CA$299 for flights that can be booked for departure within the next year. Frontier Airlines is one of the cheapest airlines offering connecting return flights on this route, with tickets starting from around CA$303. These prices are per adult in economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The cheapest months to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) are typically September and December, with average return flights costing around CA$416. These months can offer good value, especially if you're looking to travel before the holiday rush in December or enjoy the early autumn in September.

You'll find approximately 2 nonstop flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.). For even more choices, look at flights that include layovers, as there are around 77 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Charlotte-Douglas Intl. (CLT).

The earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) typically departs around 5:00 AM. This service is offered by American Airlines. Please note that this is a seasonal service, active only in November. An early departure like this can be great for maximizing your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) on a Friday, with around 60 flights available. This gives you a good selection of options if you're planning a weekend getaway or a business trip. Major airlines on this route include Southwest Airlines, American Airlines, and United. Fridays offer notably more flight options compared to other days of the week, making it a popular choice for travellers.

The most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) are in the early morning, from 6am to 9am. Many major carriers, including American Airlines, Southwest Airlines and United, offer flights during this window. Many travellers prefer these times to get an early start on their day at their destination.

A nonstop flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) typically takes around 1 hour 30 minutes. This route covers a distance of approximately 887 kilometres. If you opt for a flight with one stop, your travel time will be longer, usually around 4 hours 48 minutes. Flights with two or more stops can take even longer, averaging about 8 hours. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic.

Yes, you can fly business class or first class between STL and PIT. You can fly business class with Frontier Airlines and Delta.

First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.

It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to Pittsburgh from Lambert-St. Louis Intl. (STL), you can fly directly into Pittsburgh Intl. (PIT). Some flights may connect through major hubs like O'Hare Intl. (ORD), Charlotte-Douglas Intl. (CLT), or Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Pittsburgh. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.