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St. Louis

$146+ Cheap flights from Hailey to St. Louis (SUN - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
SUN — STL
Feb 1 — Feb 81
Sun 2/1
Sun 2/8
1 adult, Economy
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Cheap flight deals from Hailey to St. Louis

Best flights from Hailey to St. Louis
Discover carefully curated flight deals from Hailey to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 2, 2026.

This United Airlines deal was found by Cheapflights users on 12/31. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/157:00 amSUN - STL
1 stop5h 16mUnited Airlines
Mon 1/198:45 amSTL - SUN
1 stop6h 00mUnited Airlines
Deal found 12/31$329
This Delta deal was found by Cheapflights users on 12/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1512:55 pmSUN - STL
1 stop7h 40mDelta
Sun 1/186:10 amSTL - SUN
2 stops9h 32mDelta
Deal found 12/31$334
This United Airlines deal was found by Cheapflights users on 12/31. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/157:00 amSUN - STL
1 stop5h 16mUnited Airlines
Sun 1/186:30 amSTL - SUN
1 stop6h 32mUnited Airlines
Deal found 12/31$329
This Delta deal was found by Cheapflights users on 12/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/153:30 pmSUN - STL
2 stops6h 55mDelta
Mon 1/192:38 pmSTL - SUN
1 stop8h 17mDelta
Deal found 12/31$334
This United Airlines deal was found by Cheapflights users on 12/30. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/212:31 pmSUN - STL
1 stop5h 27mUnited Airlines
Sat 1/244:15 pmSTL - SUN
1 stop6h 14mUnited Airlines
Deal found 12/30$349

Find flight deals from Hailey to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Hailey (SUN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$329
(United Airlines)

One-way from

$146
(Delta)
Provider with most accurate pricing for Hailey Sun Valley-Friedman-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Hailey Sun Valley-Friedman-Lambert-St Louis flights.
Search Deals
From Hailey Sun Valley-Friedman to Lambert-St Louis
Search Deals
One-way flight from Hailey Sun Valley-Friedman to Lambert-St Louis
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 2, 2026.
Use the filters below to find and compare flights from Hailey to St. Louis that are best for you.

Fly from

Hailey

Fly to

St. Louis

Route

Depart

Return

Price

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Thu 1/15

7:00 am-1:16 pm

1 stop5h 16m

Lambert-St Louis

Mon 1/19

8:45 am-1:45 pm

1 stop6h 00m

$329

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Thu 1/15

7:00 am-1:16 pm

1 stop5h 16m

Lambert-St Louis

Sun 1/18

6:30 am-12:02 pm

1 stop6h 32m

$329

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Thu 1/15

12:55 pm-9:35 pm

1 stop7h 40m

Lambert-St Louis

Sun 1/18

6:10 am-2:42 pm

2 stops9h 32m

$334

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Thu 1/15

3:30 pm-11:25 pm

2 stops6h 55m

Lambert-St Louis

Mon 1/19

2:38 pm-9:55 pm

1 stop8h 17m

$334

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Wed 1/21

2:31 pm-8:58 pm

1 stop5h 27m

Lambert-St Louis

Sat 1/24

4:15 pm-9:29 pm

1 stop6h 14m

$349

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Fri 2/20

3:25 pm-12:25 am

1 stop8h 00m

$146

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Sun 3/22

7:54 pm-11:59 pm

1 stop27h 05m

$322

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Sun 3/22

7:54 pm-11:19 pm

3 stops50h 25m

$596

HaileySt. Louis

SUN - STL

SUNSTL

Hailey Sun Valley-Friedman

Fri 2/20

7:04 pm-2:09 pm

3 stops18h 05m

$858

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/31

Compare providers for flights from Hailey to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Hailey to St. Louis in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Hailey-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Hailey-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Hailey-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Hailey-St. Louis flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Hailey-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Hailey to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Hailey with our price prediction graph.
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 Hailey to St. Louis

What is the cheapest month to book a flight from Hailey to St. Louis?

Currently, April is the cheapest month in which you can book a flight from Hailey to St. Louis (average of $113). Flying from Hailey to St. Louis in December is currently the most expensive (average of $354). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated January 2, 2026.
Get a feel of what it's like to fly with United Airlines from Hailey to St. Louis by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,132 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,132 reviews
United Airlines
7.4
Good
9,132 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from Hailey to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Hailey to St. Louis?

    United Airlines and Delta can get you from Hailey to St. Louis in just under 5h 16m. Your travel time can differ by up to 2h 24m. There are 1282 mi between Hailey and St. Louis. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Hailey to St. Louis round-trip?

    Flying on United Airlines is currently your cheapest option to St. Louis, with prices starting at $510.

  • Can I find deals for flights from Hailey to St. Louis that include hotel bookings?

    Yes. In addition to deals on Hailey to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hailey to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hailey to St. Louis.

  • Can I find deals for business class flights from Hailey to St. Louis?

    Yes. Cheapflights offers flight deals from Hailey to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Hailey to St. Louis?

    Currently, April is the cheapest month in which you can book a flight from Hailey to St. Louis (average of $113). Flying from Hailey to St. Louis in December is currently the most expensive (average of $354). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Hailey to St. Louis

Discover the top airline that operate flights from Hailey to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$510Average$892FlexibilityNo cancel feeOn-time69%

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