$392 Cheap Delta flights St. Louis (STL) to Twin Falls (TWF)

View $392 flight on Tue, Aug 19, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$392 Cheap Delta flights St. Louis (STL) to Twin Falls (TWF)

Prices were available within the past 7 days and start at $392 for one-way flights and $446 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Dec 23 - Fri, Dec 26
STL
St. Louis
TWF
Twin Falls
$446 Roundtrip, found 6 hours ago
$446
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, Dec 23 from St. Louis to Twin Falls, returning Fri, Dec 26, priced at $446 found 6 hours ago
Delta
Fri, Jul 18 - Wed, Jul 30
STL
St. Louis
TWF
Twin Falls
$456 Roundtrip, found 6 days ago
$456
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jul 18 from St. Louis to Twin Falls, returning Wed, Jul 30, priced at $456 found 6 days ago
Delta
Fri, Jul 18 - Sat, Aug 2
STL
St. Louis
TWF
Twin Falls
$466 Roundtrip, found 6 days ago
$466
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jul 18 from St. Louis to Twin Falls, returning Sat, Aug 2, priced at $466 found 6 days ago
Delta
Fri, Jul 18 - Thu, Aug 7
STL
St. Louis
TWF
Twin Falls
$472 Roundtrip, found 6 days ago
$472
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jul 18 from St. Louis to Twin Falls, returning Thu, Aug 7, priced at $472 found 6 days ago
Delta
Fri, Jul 18 - Sun, Aug 3
STL
St. Louis
TWF
Twin Falls
$476 Roundtrip, found 6 days ago
$476
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jul 18 from St. Louis to Twin Falls, returning Sun, Aug 3, priced at $476 found 6 days ago
Delta
Wed, Jul 16 - Wed, Jul 30
STL
St. Louis
TWF
Twin Falls
$477 Roundtrip, found 6 days ago
$477
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Jul 16 from St. Louis to Twin Falls, returning Wed, Jul 30, priced at $477 found 6 days ago
Flights from St. Louis (STL) to Twin Falls (TWF)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Twin Falls
Airlines serving
Delta
Popular airline
Delta
Distance
1286 mi

Frequently asked questions

How much is a Delta Air Lines flight from Lambert-St. Louis Intl. Airport (STL) to Twin Falls Airport (TWF)?
Scoring cheap one-way Delta Air Lines flights from STL to TWF from $392 on Expedia is simple --- just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $446 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from STL to TWF with Delta Air Lines?
Delta Air Lines flights to Twin Falls are generally cheaper in the low-season months of January and February. Whether you're searching for a round-trip or one-way ticket, you could land a better deal then.
What is the cheapest time to book flights from Lambert-St. Louis Intl. Airport (STL) to Twin Falls Airport (TWF) with Delta Air Lines?
Look for cheap Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL) to Twin Falls Airport (TWF) one to three months ahead of your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Lambert-St. Louis Intl. Airport (STL) to Twin Falls Airport (TWF)?
To see if there's a direct journey from STL to TWF with Delta Air Lines or another carrier, check the "Nonstop" filter when looking for tickets.
What is the earliest Delta Air Lines flight from STL to TWF?
To find the earliest departures from STL to TWF with Delta Air Lines, filter your results by "Morning" and "Early Morning." Booking an early flight usually means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Twin Falls?
Twin Falls Airport (TWF) is the primary Twin Falls gateway for Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL).
Why fly with Delta Air Lines from STL to TWF?
Taking off from STL to TWF with Delta Air Lines means enjoying a variety of perks, including an excellent in-flight experience and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to redeem on select future travel purchases. That's on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Lambert-St. Louis Intl. Airport (STL) to Twin Falls Airport (TWF)?
Changes are usually free within 24 hours of making your booking, but your airline may add a charge after that. For more information about modifying your flights, head to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to change your itinerary without additional costs, tick the "Changes included" and "No cancel fee" filters when organizing your next break.

Explore a world of travel with Expedia

*Available to One Key members.