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Cheap flights from Twin Falls to St. Louis from $887

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 5/14. 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

Find the cheapest flights from Twin Falls to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:35 am - 7:03 pm
TWF
-
STL
6h 28m
1 stop
Delta Logo
7:00 am - 10:45 am
STL
-
TWF
4h 45m
1 stop
$887Delta
Thu, May 14 - Sun, May 17
Delta Logo
11:35 am - 7:03 pm
TWF
-
STL
6h 28m
1 stop
Delta Logo
10:49 am - 10:16 pm
STL
-
TWF
12h 27m
2 stops
$1,133Delta
Thu, May 14 - Sun, May 17
Delta Logo
11:35 am - 11:59 pm
TWF
-
STL
11h 24m
2 stops
Delta Logo
10:49 am - 10:16 pm
STL
-
TWF
12h 27m
2 stops
$1,459Delta
Thu, May 14 - Sun, May 17

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Delta flights from Twin Falls to St. Louis

Our best Delta deals on Twin Falls to St. Louis flight tickets
Delta
May 14
TWF11:35 amTwin Falls Joslin
6h 28m
1 stop
STL7:03 pmLambert-St Louis
May 17
STL7:00 amLambert-St Louis
4h 45m
1 stop
TWF10:45 amTwin Falls Joslin
$887
Delta
May 14
TWF11:35 amTwin Falls Joslin
6h 28m
1 stop
STL7:03 pmLambert-St Louis
May 17
STL10:49 amLambert-St Louis
12h 27m
2 stops
TWF10:16 pmTwin Falls Joslin
$1,133
Delta
May 14
TWF11:35 amTwin Falls Joslin
11h 24m
2 stops
STL11:59 pmLambert-St Louis
May 17
STL10:49 amLambert-St Louis
12h 27m
2 stops
TWF10:16 pmTwin Falls Joslin
$1,459

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 May 3, 2026.
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

Cheapest round-trip
Quickest round-trip

Twin FallsSt. Louis

TWF - STL

TWFSTL

Twin Falls Joslin

Thu 5/14

11:35 am-7:03 pm

1 stop6h 28m

Lambert-St Louis

Sun 5/17

7:00 am-10:45 am

1 stop4h 45m

$887

Twin FallsSt. Louis

TWF - STL

TWFSTL

Twin Falls Joslin

Thu 5/14

11:35 am-7:03 pm

1 stop6h 28m

Lambert-St Louis

Sun 5/17

10:49 am-10:16 pm

2 stops12h 27m

$1,133

Twin FallsSt. Louis

TWF - STL

TWFSTL

Twin Falls Joslin

Thu 5/14

11:35 am-11:59 pm

2 stops11h 24m

Lambert-St Louis

Sun 5/17

10:49 am-10:16 pm

2 stops12h 27m

$1,459

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

Fastest flight time

6h 17m

Direct flights

None
The fastest flight from Twin Falls to St. Louis takes 6h 17m
There are no direct flights from Twin Falls to St. Louis. There are no popular flight routes from Twin Falls to St. Louis.
Search flight deals

Frequently asked questions about flying 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 6h 17m, 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.

Frequently asked questions about flying from Twin Falls to St. Louis

  • 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
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

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.

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