$251 Cheap Flights from St. Louis (STL) to Hyannis (HYA)

View $251 flight on Sun, Aug 23, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Hyannis, MA (HYA-Barnstable Municipal)

Cheap Flights from St. Louis to Hyannis (STL-HYA)

Prices were available within the past 7 days and start at $251 for one-way flights and $499 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$499 Roundtrip, found 17 hours ago
$499
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $499 found 17 hours ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$527 Roundtrip, found 17 hours ago
$527
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $527 found 17 hours ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$579 Roundtrip, found 17 hours ago
$579
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $579 found 17 hours ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$622 Roundtrip, found 17 hours ago
$622
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $622 found 17 hours ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$661 Roundtrip, found 17 hours ago
$661
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $661 found 17 hours ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$673 Roundtrip, found 17 hours ago
$673
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $673 found 17 hours ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$679 Roundtrip, found 17 hours ago
$679
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $679 found 17 hours ago
Delta
Thu, Nov 27 - Tue, Dec 2
STL
St. Louis
HYA
Hyannis
$710 Roundtrip, found 2 days ago
$710
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Nov 27 from St. Louis to Hyannis, returning Tue, Dec 2, priced at $710 found 2 days ago
Delta
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$723 Roundtrip, found 17 hours ago
$723
Roundtrip
found 17 hours ago
Select Delta flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $723 found 17 hours ago
Delta
Mon, Nov 24 - Thu, Nov 27
STL
St. Louis
HYA
Hyannis
$729 Roundtrip, found 2 days ago
$729
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Nov 24 from St. Louis to Hyannis, returning Thu, Nov 27, priced at $729 found 2 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA) cost?
Get a cheap one-way flight from $251 or cheap return flight from $499 from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA)?
August is the cheapest month to fly from STL to HYA. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA)?
To find the cheapest airline flying from STL to HYA, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA)?
There are no daily direct flights from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from STL to HYA?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Cape Cod from Lambert-St. Louis Intl. Airport (STL)?
Check out your flight options from Lambert-St. Louis Intl. Airport (STL) to Logan Intl. Airport (BOS). This is the only airport in Cape Cod you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA) last-minute?
Holding off until just before your departure to book your flight from STL to HYA generally means paying more. While you might find some last-minute offers, they aren't always guaranteed. Keep your travel schedule open to maximize your chances of getting a bargain.
Is it cheaper to book a STL to HYA flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to HYA flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of stays, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Barnstable Municipal Airport (HYA)?
Typically, it's possible to cancel or reschedule your STL to HYA flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Barnstable Municipal
Airlines serving
American Airlines
Roundtrip price
$499
Distance
1076 mi

Book with confidence

St. Louis to Hyannis Flights

The cheapest times to fly from St. Louis to Hyannis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Hyannis are during the month of August. You can find some of the cheapest flights from St. Louis to Hyannis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Hyannis

Sunday is one of the best days to book for cheap flights from St. Louis to Hyannis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Hyannis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Hyannis in 2025. You can also book with separate airlines for your outbound and return journeys, from $251 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Hyannis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Hyannis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Hyannis Flights

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*Available to One Key members.