Cheap flights from Twin Falls to St. Louis from $523

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Twin Falls to St. Louis departing on 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Twin Falls to St. Louis

Cheap round-trip flights

Delta Logo
3:22 pm - 9:21 pmTWF-STL
4h 59m1 stop
Delta Logo
2:15 pm - 10:24 pmSTL-TWF
9h 09m2 stops
$523Delta
Find Deal
Sat, Oct 4 - Tue, Oct 7
Delta Logo
3:22 pm - 11:09 pmTWF-STL
6h 47m2 stops
Delta Logo
2:15 pm - 10:24 pmSTL-TWF
9h 09m2 stops
$528Delta
Find Deal
Sat, Oct 4 - Tue, Oct 7
Delta Logo
3:22 pm - 9:21 pmTWF-STL
4h 59m1 stop
Delta Logo
2:29 pm - 2:37 pmSTL-TWF
25h 08m1 stop
$648Delta
Find Deal
Sat, Oct 4 - Tue, Oct 7

Delta flights from Twin Falls to St. Louis

Our best Delta deals on Twin Falls to St. Louis flight tickets
Delta
Oct 4
TWF3:22 pmTwin Falls Joslin
4h 59m
1 stop
STL9:21 pmLambert-St Louis
Oct 7
STL2:15 pmLambert-St Louis
9h 09m
2 stops
TWF10:24 pmTwin Falls Joslin
Delta
Oct 4
TWF3:22 pmTwin Falls Joslin
6h 47m
2 stops
STL11:09 pmLambert-St Louis
Oct 7
STL2:15 pmLambert-St Louis
9h 09m
2 stops
TWF10:24 pmTwin Falls Joslin
Delta
Oct 4
TWF3:22 pmTwin Falls Joslin
4h 59m
1 stop
STL9:21 pmLambert-St Louis
Oct 7
STL2:29 pmLambert-St Louis
25h 08m
1 stop
TWF2:37 pmTwin Falls Joslin

momondo Fare Finder

 
Customize your flight search to find flights from Twin Falls to St. Louis 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Twin Falls to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Twin FallsSt. Louis

TWF - STL

TWFSTL

Twin Falls Joslin

Sat 10/4

3:22 pm-9:21 pm

1 stop4h 59m

Lambert-St Louis

Tue 10/7

2:15 pm-10:24 pm

2 stops9h 09m

$523

Twin FallsSt. Louis

TWF - STL

TWFSTL

Twin Falls Joslin

Sat 10/4

3:22 pm-11:09 pm

2 stops6h 47m

Lambert-St Louis

Tue 10/7

2:15 pm-10:24 pm

2 stops9h 09m

$528

Twin FallsSt. Louis

TWF - STL

TWFSTL

Twin Falls Joslin

Sat 10/4

3:22 pm-9:21 pm

1 stop4h 59m

Lambert-St Louis

Tue 10/7

2:29 pm-2:37 pm

1 stop25h 08m

$648

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Twin Falls to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Twin Falls to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Twin Falls to St. Louis (TWF to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Twin Falls to St. Louis

Direct flights

None
There are no direct flights from Twin Falls to St. Louis. There are no popular flight routes from Twin Falls to St. Louis.
  • How far is Twin Falls Joslin to Lambert-St Louis by plane?

    The distance between Twin Falls Joslin and Lambert-St Louis is about 1296.0 mi. Flights usually cover this in 4h 59m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Twin Falls Joslin Airport to Lambert-St Louis Airport?

    Prices for flights from Twin Falls Joslin Airport to Lambert-St Louis Airport are updated daily.

  • How old do you have to be to fly from Twin Falls Joslin Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Twin Falls Joslin Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Twin Falls to St. Louis?

    Confirm your travel details to search for the latest offers for flights from Twin Falls to St. Louis. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Twin Falls to St. Louis with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Twin Falls to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Twin Falls to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Twin Falls to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Twin Falls which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Twin Falls to St. Louis?

momondo helps you find the best flight between Twin Falls and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Twin Falls to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Twin Falls. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/17
Fri 10/24

Find better results for your trip to the United States