$265 Cheap Flights from St. Louis (STL) to Nantucket (ACK)

View $265 flight on Sat, Aug 8, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Nantucket, MA (ACK-Nantucket Memorial)

Cheap Flights from St. Louis to Nantucket (STL-ACK)

Prices were available within the past 7 days and start at $265 for one-way flights and $329 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$329 Roundtrip, found 5 days ago
$329
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $329 found 5 days ago
Delta
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$379 Roundtrip, found 5 days ago
$379
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $379 found 5 days ago
American Airlines
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$398 Roundtrip, found 5 days ago
$398
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $398 found 5 days ago
Delta
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$408 Roundtrip, found 5 days ago
$408
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $408 found 5 days ago
American Airlines
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$409 Roundtrip, found 5 days ago
$409
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $409 found 5 days ago
American Airlines
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$418 Roundtrip, found 5 days ago
$418
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $418 found 5 days ago
Delta
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$423 Roundtrip, found 5 days ago
$423
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $423 found 5 days ago
Delta
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$428 Roundtrip, found 5 days ago
$428
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $428 found 5 days ago
American Airlines
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$439 Roundtrip, found 5 days ago
$439
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $439 found 5 days ago
United
Sat, Aug 8 - Wed, Aug 12
STL
St. Louis
ACK
Nantucket
$1,043 Roundtrip, found 5 days ago
$1,043
Roundtrip
found 5 days ago
Select United flight, departing Sat, Aug 8 from St. Louis to Nantucket, returning Wed, Aug 12, priced at $1,043 found 5 days ago

Alternative airports near Nantucket

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Martha's Vineyard MVY. Cheapest option available. Flights from $903
MVY
Martha's Vineyard
Cheapest
Flights from $903

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK) cost?
Get a cheap one-way flight from $265 or cheap return flight from $329 from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK)?
August is the most affordable month to fly from STL to ACK. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest STL to ACK flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK)?
You'll have to book a flight with a layover if you're traveling from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from STL to ACK?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the time of year, carrier 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 Nantucket Memorial Airport (ACK)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**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.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK) last-minute?
Last-minute bookings from STL to ACK are generally more expensive. To secure the lowest rates, start searching for flights as early as possible. That being said, if you're flexible with your travel plans, you may land a cheap ticket right before you leave.
Is it cheaper to book a STL to ACK flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to ACK flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the hassle out of planning your trip. Simply pick your flights and choose from our wide range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Nantucket Memorial Airport (ACK)?
Usually, it's possible to cancel or reschedule your STL to ACK flight. However, if the booking was made more than 24 hours ago, additional fees 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
Nantucket Memorial
Roundtrip price
$329
Distance
1085 mi

Book with confidence

St. Louis to Nantucket Flights

The cheapest times to fly from St. Louis to Nantucket

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 Nantucket are during the month of August. You can find some of the cheapest flights from St. Louis to Nantucket with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Nantucket: 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 Nantucket

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 Nantucket in 2025. You can also book with separate airlines for your outbound and return journeys, from $265 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 Nantucket 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 Nantucket 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 Nantucket Flights

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*Available to One Key members.