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

Save on Flight Bookings!

Popular airlines from Pittsburgh Intl. Airport (PIT) to St. Louis Lambert Intl. Airport (STL)

  • Be in the know

    Get alerts if flight prices drop or rise*
  • Book smarter

    Save on select hotels after you book a flight*
  • Find the right fit

    We search billions of combinations of flights to help you find your next adventure

Eid al-Fitr Sale

Members save up to 40% on hotels. Plan this year’s big trip and save.

Frequently asked questions

Is it cheaper to buy a plane ticket from Pittsburgh Airport to Lambert Field last minute?
Being the spontaneous type is a wonderful way to discover the world, but it's not always the best method to grab a cheap flight. It's better to book your Pittsburgh Airport to Lambert Field journey well ahead of time instead of waiting till the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. You can unleash your spontaneous side when you reach Lambert Field!
What airports do you fly into for St. Louis from Pittsburgh?
From Pittsburgh, you can travel to St. Louis via Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) and St. Louis Downtown Airport (CPS). Find out which airport is more convenient for you before making your decision. If you decide to land at Lambert-St. Louis Intl. Airport (STL), it's roughly 19 kilometers northwest of downtown. Use the cash you save when booking your seat with Expedia to enjoy the city's popular sights, such as Busch Stadium and Gateway Arch.
Can I change the date of my flight from PIT to STL?
Expedia makes it easy to make changes to your PIT to Lambert-St. Louis Intl. Airport (STL) journey yourself. Access your details via the Expedia Trips portal and hit "change flight." Browse around for new flights and book the one that better suits your plans. You'll see an estimate of any flight change costs. Alternatively, head to our Customer Service portal to connect with our Virtual Agent and get answers to your questions.

Travel information

Origin airport
Pittsburgh Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
881 km
Average flight time
1 hour 28 mins

Book with confidence