A city skyline with a prominent arch bridge at sunset.

Cheap Flights from Sun Valley (SUN) to St. Louis (STL)

Save on Flight Bookings!

Popular airlines from Sun Valley, ID (SUN-Friedman Memorial) 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

Frequently asked questions

Is it cheaper to buy a plane ticket from Friedman Memorial Airport (SUN) to STL last minute?
Being the spontaneous type is a terrific way to discover the world, but it's not always the wisest method to land a cheap airfare. It's better to book your SUN to Lambert Field trip in advance instead of waiting until 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're discovering Lambert Field!
What airports do you fly into for St. Louis from Sun Valley?
With Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) and St. Louis Downtown Airport (CPS) to select from, journeying from Sun Valley to St. Louis is a piece of cake. The city's busiest terminal, Lambert-St. Louis Intl. Airport (STL), is approximately 19 kilometers northwest of the downtown area. Besides the price of fares, consider factors like transportation options from the airport and the distance to your hotel before making your decision. Get your St. Louis adventure off to a superb start by discovering Busch Stadium and Gateway Arch.
Can I change the date of my flight from Friedman Memorial Airport to STL?
Plans can get upended, so Expedia is here to help make amending your trip as easy as possible. First, find your Friedman Memorial Airport (SUN) to STL itinerary through the Expedia Trips portal and check the ticket rules to see if you can make changes. If you booked your ticket in the last 24 hours, some airlines will let you cancel without charge and organize new flights. If you bought your fare more than 24 hours ago, connect with us through our Customer Service portal so we can assist you further.

Travel information

Origin airport
Friedman Memorial
Destination airport
Lambert-St. Louis Intl.
Distance
2053 km

Book with confidence