Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Hailey to St. Louis from $729

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Hailey to St. Louis departing on 12/8. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Hailey to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:29 pm - 8:59 pm
SUN
-
STL
5h 30m
1 stop
United Airlines Logo
7:04 pm - 2:46 pm
STL
-
SUN
20h 42m
2 stops
$729United Airlines
Tue, Dec 8 - Sat, Dec 12
United Airlines Logo
2:29 pm - 11:09 pm
SUN
-
STL
7h 40m
2 stops
United Airlines Logo
7:04 pm - 2:46 pm
STL
-
SUN
20h 42m
2 stops
$734United Airlines
Tue, Dec 8 - Sat, Dec 12
United Airlines Logo
2:29 pm - 8:59 pm
SUN
-
STL
5h 30m
1 stop
United Airlines Logo
1:30 pm - 1:44 pm
STL
-
SUN
25h 14m
1 stop
$743United Airlines
Tue, Dec 8 - Sat, Dec 12
Alaska Airlines Logo
10:20 am - 11:58 pm
SUN
-
STL
12h 38m
2 stops
Alaska Airlines Logo
3:24 pm - 9:38 am
STL
-
SUN
19h 14m
1 stop
$764Alaska Airlines
Tue, Dec 8 - Sat, Dec 12
Alaska Airlines Logo
10:20 am - 11:57 pm
SUN
-
STL
12h 37m
2 stops
Alaska Airlines Logo
6:55 am - 9:38 am
STL
-
SUN
27h 43m
2 stops
$769Alaska Airlines
Tue, Dec 8 - Sat, Dec 12
Alaska Airlines Logo
10:20 am - 11:59 pm
SUN
-
STL
12h 39m
1 stop
Alaska Airlines Logo
3:24 pm - 9:38 am
STL
-
SUN
19h 14m
1 stop
$773Alaska Airlines
Tue, Dec 8 - Sat, Dec 12
United Airlines Logo
2:29 pm - 11:09 pm
SUN
-
STL
7h 40m
2 stops
United Airlines Logo
1:08 pm - 2:46 pm
STL
-
SUN
26h 38m
3 stops
$863United Airlines
Tue, Dec 8 - Sat, Dec 12

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.
Search flight deals

United Airlines flights from Hailey to St. Louis

Our best United Airlines deals on Hailey to St. Louis flight tickets
United Airlines
Dec 8
SUN2:29 pmHailey Sun Valley-Friedman
5h 30m
1 stop
STL8:59 pmLambert-St Louis
Dec 12
STL7:04 pmLambert-St Louis
20h 42m
2 stops
SUN2:46 pmHailey Sun Valley-Friedman
$729
United Airlines
Dec 8
SUN2:29 pmHailey Sun Valley-Friedman
7h 40m
2 stops
STL11:09 pmLambert-St Louis
Dec 12
STL7:04 pmLambert-St Louis
20h 42m
2 stops
SUN2:46 pmHailey Sun Valley-Friedman
$734
United Airlines
Dec 8
SUN2:29 pmHailey Sun Valley-Friedman
5h 30m
1 stop
STL8:59 pmLambert-St Louis
Dec 12
STL1:30 pmLambert-St Louis
25h 14m
1 stop
SUN1:44 pmHailey Sun Valley-Friedman
$743

Alaska Airlines flights from Hailey to St. Louis

Our best Alaska Airlines deals on Hailey to St. Louis flight tickets
Alaska Airlines
Dec 8
SUN10:20 amHailey Sun Valley-Friedman
12h 38m
2 stops
STL11:58 pmLambert-St Louis
Dec 12
STL3:24 pmLambert-St Louis
19h 14m
1 stop
SUN9:38 amHailey Sun Valley-Friedman
$764
Alaska Airlines
Dec 8
SUN10:20 amHailey Sun Valley-Friedman
12h 37m
2 stops
STL11:57 pmLambert-St Louis
Dec 12
STL6:55 amLambert-St Louis
27h 43m
2 stops
SUN9:38 amHailey Sun Valley-Friedman
$769
Alaska Airlines
Dec 8
SUN10:20 amHailey Sun Valley-Friedman
12h 39m
1 stop
STL11:59 pmLambert-St Louis
Dec 12
STL3:24 pmLambert-St Louis
19h 14m
1 stop
SUN9:38 amHailey Sun Valley-Friedman
$773

momondo Fare Finder

 
Customize your flight search to find flights from Hailey 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 June 23, 2026.
Use the filters below to find and compare flights from Hailey to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Tue 12/8

2:29 pm-8:59 pm

1 stop5h 30m

Lambert-St Louis

Sat 12/12

7:04 pm-2:46 pm

2 stops20h 42m

$729

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Tue 12/8

2:29 pm-11:09 pm

2 stops7h 40m

Lambert-St Louis

Sat 12/12

7:04 pm-2:46 pm

2 stops20h 42m

$734

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Tue 12/8

2:29 pm-8:59 pm

1 stop5h 30m

Lambert-St Louis

Sat 12/12

1:30 pm-1:44 pm

1 stop25h 14m

$743

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Tue 12/8

10:20 am-11:58 pm

2 stops12h 38m

Lambert-St Louis

Sat 12/12

3:24 pm-9:38 am

1 stop19h 14m

$764

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Tue 12/8

10:20 am-11:57 pm

2 stops12h 37m

Lambert-St Louis

Sat 12/12

6:55 am-9:38 am

2 stops27h 43m

$769

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Tue 12/8

10:20 am-11:59 pm

1 stop12h 39m

Lambert-St Louis

Sat 12/12

3:24 pm-9:38 am

1 stop19h 14m

$773

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Tue 12/8

2:29 pm-11:09 pm

2 stops7h 40m

Lambert-St Louis

Sat 12/12

1:08 pm-2:46 pm

3 stops26h 38m

$863

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Hailey to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to St. Louis?

Southwest, Delta and United Airlines are the top three most popular airlines that fly to St. Louis from Hailey according to our data. Southwest is the first choice among our users, with 36% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Hailey to St. Louis

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

Cheap Hailey to St. Louis (SUN to STL) flight deals and tips

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

Fastest flight time

5h 30m

Direct flights

None
The fastest flight from Hailey to St. Louis takes 5h 30m
There are no direct flights from Hailey to St. Louis. There are no popular flight routes from Hailey to St. Louis.
Search flight deals

Frequently asked questions about flying from Hailey to St. Louis

  • How far is Hailey Sun Valley-Friedman to Lambert-St Louis by plane?

    A flight from Hailey Sun Valley-Friedman to Lambert-St Louis will travel around 1294.9 mi. By plane, this route typically takes 5h 30m.

  • When did momondo last update prices for flights from Hailey Sun Valley-Friedman Airport to Lambert-St Louis Airport?

    Prices for flights from Hailey Sun Valley-Friedman Airport to Lambert-St Louis Airport were last updated today.

  • How old do you have to be to fly from Hailey Sun Valley-Friedman Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Hailey Sun Valley-Friedman 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 you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near St. Louis?

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

Why use momondo?

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

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

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

All flight searches from Hailey to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Hailey to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Hailey and alert you when they 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 7/23
Thu 7/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States