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

According to our current data, United Airlines ($894), offers the cheapest pricing from Hayden, Colorado to St. Louis.

What is the cheapest month to book a flight from Hayden, Colorado to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Hayden, Colorado to St. Louis (average of $311). Flying from Hayden, Colorado to St. Louis in March is currently the most expensive (average of $356). 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.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest time of day to fly from HDN to STL?

When flying from Hayden, Colorado to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 5% versus a flight in the morning.

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.

$121+ Flights from Hayden, CO to St. Louis

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Cheap flight deals from Hayden to St. Louis

Round-trip from	$894 (United Airlines)
One-way from	$121 (Southwest)

From Hayden Yampa Valley to Lambert-St Louis

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One-way flight from Hayden Yampa Valley to Lambert-St Louis

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Find 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 3, 2025.

Wed 10/17:33 amHDN - STL

1 stop4h 11mUnited Airlines

Wed 10/14:50 pmSTL - HDN

1 stop4h 13mUnited Airlines

Deal found 7/1

$894

Best flights from Hayden to St. Louis
Discover carefully curated flight deals from Hayden to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Wed 10/17:33 amHDN - STL

1 stop4h 11mUnited Airlines

Wed 10/14:50 pmSTL - HDN

1 stop4h 13mUnited Airlines

Deal found 7/1

$894

One-way flights from Hayden to St. Louis
Search for one-way flight options from Hayden to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Sat 9/2712:00 pmHDN - STL

1 stop4h 00mSouthwest

Deal found 7/1

$121

Wed 10/11:35 pmHDN - STL

1 stop6h 11mUnited Airlines

Deal found 7/1

$154

Cheapflights Fare Finder

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

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Wed 10/1

7:33 am-12:44 pm

1 stop4h 11m

Lambert-St Louis

Wed 10/1

4:50 pm-8:03 pm

1 stop4h 13m

$894

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Sat 9/27

12:00 pm-5:00 pm

1 stop4h 00m

$121

HaydenSt. Louis

HDN - STL

HDNSTL

Hayden Yampa Valley

Wed 10/1

1:35 pm-8:46 pm

1 stop6h 11m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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

Read reviews from past customers who have flown Southwest and 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.

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,266 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,861 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What is the cheapest airline to fly from Hayden, Colorado to St. Louis round-trip?
According to our current data, United Airlines ($894), 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.
What is the cheapest month to book a flight from Hayden, Colorado to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Hayden, Colorado to St. Louis (average of $311). Flying from Hayden, Colorado to St. Louis in March is currently the most expensive (average of $356). 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

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Eureka

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Festus

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Farmington

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Top airline flying from Hayden to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$270	Average$550	FlexibilityNo cancel fee	On-time69%

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$121+ Cheap flights from Hayden, CO to St. Louis (HDN - 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Hayden to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Hayden to St. Louis

Round-trip from

One-way from

Find flight deals from Hayden to St. Louis

Cheapest flights from Hayden to St. LouisExplore 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 3, 2025.

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 3, 2025.

Cheapflights Fare Finder

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

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.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Southwest and 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.

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.

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

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

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

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

What is the cheapest month to book a flight from Hayden, Colorado to St. Louis?

Traveling to a place near Hayden?

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Alternative routes for Hayden to St. Louis

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Top airline flying from Hayden to St. Louis

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Travel Smart

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 3, 2025.