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$405+ Cheap flights from Hayden, CO to St. Louis (HDN - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
HDN — STL
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Cheap flight deals from Hayden to St. Louis

Cheapest flights from Hayden to St. Louis
Explore the most affordable flight options available from Hayden to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This United Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 8/297:05 am
HDN
-
STL
1 stop4h 35m
United Airlines
Tue 9/19:00 am
STL
-
HDN
1 stop6h 29m
United Airlines
Deal found 7/28$405
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Fri 8/73:20 pm
HDN
-
STL
1 stop7h 37m
United Airlines
Mon 8/104:48 pm
STL
-
HDN
1 stop4h 19m
United Airlines
Deal found 7/28$539
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/131:30 pm
HDN
-
STL
2 stops7h 30m
United Airlines
Mon 8/1712:59 pm
STL
-
HDN
2 stops8h 25m
United Airlines
Deal found 7/29$579

Find flight deals from Hayden to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Hayden (HDN) 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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$405
(United Airlines)
Provider with most accurate pricing for Hayden Yampa Valley-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Hayden Yampa Valley-Lambert-St Louis flights.
Search Deals
From Hayden Yampa Valley to Lambert-St Louis
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Hayden 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 July 30, 2026.
Use the filters below to find and compare flights from Hayden to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Sat 8/29

7:05 am-12:40 pm

1 stop4h 35m

Lambert-St Louis

Tue 9/1

9:00 am-2:29 pm

1 stop6h 29m

$405

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Thu 8/13

7:00 am-10:00 pm

2 stops14h 00m

Lambert-St Louis

Mon 8/17

4:40 pm-8:24 pm

1 stop4h 44m

$564

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Hayden, Colorado-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Hayden, Colorado-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Hayden, Colorado-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Hayden, Colorado-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub 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 Hayden, Colorado-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 Hayden to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Hayden 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.

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 July 30, 2026.
Read reviews from past customers who have flown United Airlines from Hayden to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,052 reviews

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

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
10,052 reviews
United Airlines
7.4
Good
10,052 reviews

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

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 Hayden 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 Hayden, Colorado to St. Louis?

    Departing from Hayden, Colorado to St. Louis will take you 4h 35m. The distance from Hayden, Colorado to St. Louis is about 903 mi.

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

    According to our current data, United Airlines ($264), offers the cheapest pricing from Hayden, Colorado to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Hayden 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.

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
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

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Top airline flying from Hayden to St. Louis

Discover the top airline that operate flights from Hayden 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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$264Average$443FlexibilityNo cancel feeOn-time69%

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