Cheap Flights from Boston (BOS) to St. Louis (CPS)

  • 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
Flights from Boston (BOS) to St. Louis (CPS)
Origin airport
Logan Intl.
Destination airport
St. Louis Downtown
Distance
1659 km

Boston to St. Louis Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Boston to St. Louis offer the perfect respite. Not only does exploring St. Louis provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Boston to St. Louis may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of St. Louis are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to St. Louis more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is now!

Frequently asked questions

Is it cheaper to buy a plane ticket from BOS to CPS last minute?
Being spontaneous is a fabulous way to see the world, but it isn't always the wisest method to land a bargain plane ticket. Think about booking your Logan Intl. Airport to St. Louis Downtown Airport (CPS) trip ahead of time rather than leaving it 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. Save all that spontaneity for when you reach your destination!
What airports do you fly into for East St. Louis from Boston?
With St. Louis Downtown Airport (CPS), Lambert-St. Louis Intl. Airport (STL) and MidAmerica-St. Louis Airport (BLV) to pick from, making your way from Boston to East St. Louis is simple. The city's main hub, St. Louis Downtown Airport (CPS), is approximately 3 kilometers south of the center. Besides ticket prices, consider factors like train or bus options from the airport and the distance to your hotel when deciding where to touch down. Get your East St. Louis trip off to a terrific start by exploring Busch Stadium and Gateway Arch.
Can I change the date of my flight from Logan Intl. Airport (BOS) to CPS?
Quickly and easily make changes to your Logan Intl. Airport (BOS) to St. Louis Downtown Airport (CPS) trip via the Expedia Trips portal. But before amending dates or times, read the conditions and rules in your itinerary to learn what the carrier will allow you to do and if fees apply. Some airlines charge a change fee per person, plus any difference in prices. However, if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also visit our Customer Service portal for further information and to chat with our Virtual Agent.