$521+ Cheap flights from St. Louis (STL) to Cape Cod and the Islands
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ACK
Sep 22 — Sep 291
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Cape Cod and the Islands with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Cape Cod and the Islands
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to Cape Cod and the IslandsExplore the most affordable flight options available from St. Louis to Cape Cod and the Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 23, 2026.
Explore the most affordable flight options available from St. Louis to Cape Cod and the Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 23, 2026.
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/229:32 am -
1 stop5h 41m
Fri 8/2810:41 am -
1 stop7h 20m
Deal found 8/21![American Airlines logo]()
$521
This United deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 am -
3 stops22h 30m
Sat 9/192:59 pm -
2 stops9h 39m
Deal found 8/22![Multiple Airlines logo]()
$1,097
Best flights from St. Louis to Cape Cod and the IslandsDiscover carefully curated flight deals from St. Louis to Cape Cod and the Islands that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
Discover carefully curated flight deals from St. Louis to Cape Cod and the Islands that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
This United deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:00 am -
2 stops13h 08m
Sat 9/197:45 am -
2 stops14h 48m
Deal found 8/22![Multiple Airlines logo]()
$1,170
Last-minute flights from St. Louis to Cape Cod and the IslandsDiscover last-minute flight deals from St. Louis to Cape Cod and the Islands. Data last updated August 23, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Cape Cod and the Islands. Data last updated August 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/229:32 am -
1 stop5h 41m
Fri 8/2810:41 am -
1 stop7h 20m
Deal found 8/21![American Airlines logo]()
$521
This United deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 am -
3 stops22h 30m
Sat 9/192:59 pm -
2 stops9h 39m
Deal found 8/22![Multiple Airlines logo]()
$1,097
One-way flights from St. Louis to Cape Cod and the IslandsSearch for one-way flight options from St. Louis to Cape Cod and the Islands. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
Search for one-way flight options from St. Louis to Cape Cod and the Islands. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:35 pm -
3 stops34h 43m
Deal found 8/20![Multiple Airlines logo]()
$546
Find flight deals from St. Louis to Cape Cod and the Islands
Keep the following information in mind while searching for St. Louis to Cape Cod and the Islands flight deals. Data was last updated August 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,097 (United) |
One-way from | $546 (Kiwi.com) |
Popular in | February |
Cheapest in | December |
Average price | $486 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Cape Cod and the Islands that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 23, 2026.
Use the filters below to find and compare flights from St. Louis to Cape Cod and the Islands that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisWest Tisbury
STL Lambert-St Louis - MVY West Tisbury Martha's Vineyard
STLMVY
Lambert-St Louis
Sun 9/13
8:00 am-10:08 pm
2 stops13h 08m
West Tisbury Martha's Vineyard
Sat 9/19
7:45 am-9:33 pm
2 stops14h 48m
$1,170
Cheapest one-way
Quickest one-way
St. LouisWest Tisbury
STL Lambert-St Louis - MVY West Tisbury Martha's Vineyard
STLMVY
Lambert-St Louis
Wed 10/14
6:35 pm-6:18 am
3 stops34h 43m
$546
Sorted by cheapest first
Best time to book a flight from St. Louis to Cape Cod and the Islands
Have a flexible travel schedule? Discover the best time to fly to Cape Cod and the Islands from St. Louis with our price prediction graph.
STL-MVY
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Cape Cod and the Islands
STL-zzKDT
STL-MVY
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Cape Cod and the Islands. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights