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$320+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
HDN — STL
Mar 26 — Apr 21
Thu 3/26
Thu 4/2
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 February 24, 2026.

This United Airlines deal was found by Cheapflights users on 2/21. 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 5/157:10 am
HDN
-
STL
1 stop5h 03m
United Airlines
Fri 5/152:35 pm
STL
-
HDN
1 stop6h 42m
United Airlines
Deal found 2/21$320
This United Airlines deal was found by Cheapflights users on 2/22. 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.
Tue 3/311:56 am
HDN
-
STL
1 stop8h 09m
United Airlines
Wed 3/46:25 am
STL
-
HDN
1 stop5h 35m
United Airlines
Deal found 2/22$389
This Southwest deal was found by Cheapflights users on 2/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:40 am
HDN
-
STL
1 stop6h 10m
Southwest
Mon 5/183:00 pm
STL
-
HDN
1 stop5h 10m
Southwest
Deal found 2/21$426
This United Airlines deal was found by Cheapflights users on 2/20. 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 2/251:13 pm
HDN
-
STL
1 stop8h 01m
United Airlines
Sat 2/284:30 pm
STL
-
HDN
1 stop4h 57m
United Airlines
Deal found 2/20$444
This Southwest deal was found by Cheapflights users on 2/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:40 am
HDN
-
STL
1 stop6h 10m
Southwest
Sun 5/178:35 am
STL
-
HDN
2 stops12h 10m
Southwest
Deal found 2/21$471

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 February 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$320
(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
Search Deals

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 February 24, 2026.
Use the filters below to find and compare flights from Hayden to St. Louis that are best for you.

Fly from

Hayden

Fly to

St. Louis

Route

Depart

Return

Price

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Fri 5/15

8:40 am-3:50 pm

1 stop6h 10m

Lambert-St Louis

Mon 5/18

3:00 pm-7:10 pm

1 stop5h 10m

$426

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Fri 5/15

8:40 am-3:50 pm

1 stop6h 10m

Lambert-St Louis

Sun 5/17

8:35 am-7:45 pm

2 stops12h 10m

$471

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Fri 3/20

7:00 am-1:19 pm

1 stop5h 19m

Lambert-St Louis

Sun 3/22

6:00 am-12:13 pm

1 stop7h 13m

$550

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Sat 3/21

7:00 am-4:23 pm

2 stops8h 23m

Lambert-St Louis

Sat 3/28

5:00 am-11:03 am

1 stop7h 03m

$724

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

  • 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 February 24, 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
9,344 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,344 reviews
United Airlines
7.4
Good
9,344 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 5h 19m. The distance from Hayden, Colorado to St. Louis is about 903 mi. This flight may include one or multiple stops.

  • 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
Swansea
Fairview Heights
Fenton
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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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 February 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$264Average$450FlexibilityNo cancel feeOn-time69%

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