If you’re travelling between Changi Airport and St. Louis Lambert International Airport, round-trip flights start from S$1,491. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don’t let a good deal slip through your fingers. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.

Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for SIN to Lambert-St. Louis Intl. Airport (STL) flights, you’ll see a “no change fees” filter for you to select.

With a flight distance of 15,300 kilometres from SIN (SIN) to STL (STL), this is a long-haul journey. Make sure you drink lots of water and go for a short walk down the aisle from time to time.

If you want to fly straight from SIN to Lambert Field, you’ll have to book a flight with one or more stops. Unfortunately, there aren’t any airlines that fly directly on this route.

Tickets from Changi Airport to St. Louis Lambert International Airport are available up to a year prior to departure on Expedia. And although you may occasionally score fantastic last-minute deals, it’s never something you can count on. Also, booking your flights well in advance means you’ll have more choices — and you can avoid ending up with the dreaded middle seat! We’re constantly updating our fares to make sure you get the biggest bargains, so check back often for all the latest specials.