$358 Cheap Flights from St. Louis (STL) to Hyannis (HYA)

View $358 flight on Mon, Jun 22, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $358 for one-way flights and $479 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
$479 Roundtrip, found 1 day ago
$479
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $479 found 1 day ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$524 Roundtrip, found 1 day ago
$524
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $524 found 1 day ago
American Airlines
Mon, Jun 22 - Thu, Jun 25
STL
St. Louis
HYA
Hyannis
$532 Roundtrip, found 6 days ago
$532
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jun 22 from St. Louis to Hyannis, returning Thu, Jun 25, priced at $532 found 6 days ago
American Airlines
Fri, Jun 19 - Fri, Jul 3
STL
St. Louis
HYA
Hyannis
$532 Roundtrip, found 6 days ago
$532
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Jun 19 from St. Louis to Hyannis, returning Fri, Jul 3, priced at $532 found 6 days ago
American Airlines
Fri, Jun 19 - Fri, Jul 3
STL
St. Louis
HYA
Hyannis
$548 Roundtrip, found 6 days ago
$548
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Jun 19 from St. Louis to Hyannis, returning Fri, Jul 3, priced at $548 found 6 days ago
American Airlines
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$549 Roundtrip, found 1 day ago
$549
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $549 found 1 day ago
American Airlines
Mon, Jun 22 - Thu, Jun 25
STL
St. Louis
HYA
Hyannis
$556 Roundtrip, found 6 days ago
$556
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jun 22 from St. Louis to Hyannis, returning Thu, Jun 25, priced at $556 found 6 days ago
American Airlines
Mon, Jun 22 - Thu, Jun 25
STL
St. Louis
HYA
Hyannis
$557 Roundtrip, found 6 days ago
$557
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jun 22 from St. Louis to Hyannis, returning Thu, Jun 25, priced at $557 found 6 days ago
American Airlines
Thu, Jun 18 - Mon, Jun 22
STL
St. Louis
HYA
Hyannis
$562 Roundtrip, found 4 days ago
$562
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Jun 18 from St. Louis to Hyannis, returning Mon, Jun 22, priced at $562 found 4 days ago
United
Sun, Aug 23 - Sun, Aug 30
STL
St. Louis
HYA
Hyannis
$676 Roundtrip, found 1 day ago
$676
Roundtrip
found 1 day ago
Select United flight, departing Sun, Aug 23 from St. Louis to Hyannis, returning Sun, Aug 30, priced at $676 found 1 day ago

Frequently asked questions

How much does a flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) cost?
You can find cheap one-way flights and cheap return flights from $479 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) with Expedia. One-way flights generally range between $380 and $1860. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
The cheapest month to fly from STL to HYA is August when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
Enter STL to HYA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
United, American Airlines and Delta are just some of the carriers that fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
The earliest flight from Lambert-St. Louis International Airport (STL) to Barnstable Municipal Airport (HYA) typically departs at 5:00 AM, operated by American Airlines. This seasonal service is available in July, giving you an early start to your trip to Hyannis. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
You'll usually find the most flights from Lambert-St. Louis Intl. (STL) to Barnstable Municipal (HYA) on a Wednesday, with around 20 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta, United, and American Airlines.
What are the most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
The most popular departure times for flights from St. Louis (STL) to Hyannis (HYA) are in the early morning, from 6am to 9am. About 61% of passengers prefer this time window. Many major carriers, including United Airlines and American Airlines, offer flights during this window. This timing is popular because it allows you to start your day early and make the most of your time in Hyannis.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
Flights from STL to HYA with one stop typically take around 7 hours, covering approximately 1,076 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
Select the "Business class" and "First class" filters when looking for STL to HYA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Hyannis from Lambert-St. Louis Intl. (STL)?
If you're planning to travel to Hyannis from Lambert-St. Louis Intl. (STL), you can fly into Barnstable Municipal (HYA) Some flights may connect through major hubs like O'Hare Intl. (ORD), LaGuardia (LGA), Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Hyannis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Hyannis, MA (HYA-Barnstable Municipal) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Barnstable Municipal
Roundtrip price
$479
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 2026. You can also book with separate airlines for your outbound and return journeys, from $358 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

*Flight schedules are subject to change.

*Available to One Key members.

 

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