$185+ 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
HDN — STL
Oct 29 — Nov 51
Round-trip
1 adult, Economy
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Find cheap flights from Hayden to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Hayden to St. Louis
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Best
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One-way
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 September 29, 2026.
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 September 29, 2026.
This United Airlines deal was found by Cheapflights users on 9/26. 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 10/143:14 pm -
1 stop7h 30m
Tue 10/209:00 am -
1 stop4h 41m
Deal found 9/26![United Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 9/26. 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.
Wed 10/148:55 am -
2 stops7h 50m
Tue 10/202:35 pm -
1 stop5h 50m
Deal found 9/26![Southwest logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 11/181:27 pm -
1 stop6h 32m
Mon 11/238:00 am -
2 stops13h 32m
Deal found 9/29![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/29. 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 11/197:00 am -
1 stop4h 38m
Mon 11/238:00 am -
2 stops13h 32m
Deal found 9/29![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/101:43 pm -
1 stop5h 53m
Wed 10/144:39 pm -
1 stop4h 42m
Deal found 9/25![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Wed 10/141:43 pm -
1 stop5h 53m
Sat 10/178:00 am -
2 stops7h 33m
Deal found 9/28![United Airlines logo]()
$504
This Southwest deal was found by Cheapflights users on 9/25. 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.
Sat 10/109:10 am -
2 stops10h 00m
Wed 10/1412:10 pm -
2 stops8h 15m
Deal found 9/25![Southwest logo]()
$509
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 11/187:00 am -
1 stop4h 38m
Tue 11/244:39 pm -
1 stop4h 53m
Deal found 9/29![United Airlines logo]()
$527
Best flights from Hayden to St. LouisDiscover 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 September 29, 2026.
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 September 29, 2026.
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Tue 2/97:30 am -
1 stop4h 13m
Wed 2/109:13 am -
1 stop6h 25m
Deal found 9/28![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Wed 10/141:43 pm -
1 stop5h 53m
Sat 10/179:00 am -
1 stop6h 33m
Deal found 9/28![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/101:43 pm -
1 stop5h 53m
Wed 10/144:39 pm -
1 stop4h 42m
Deal found 9/25![United Airlines logo]()
$499
Last-minute flights from Hayden to St. LouisDiscover last-minute flight deals from Hayden to St. Louis. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Hayden to St. Louis. Data last updated September 29, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/101:43 pm -
1 stop5h 53m
Wed 10/144:39 pm -
1 stop4h 42m
Deal found 9/25![United Airlines logo]()
$499
This Southwest deal was found by Cheapflights users on 9/25. 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.
Sat 10/109:10 am -
2 stops10h 00m
Wed 10/1412:10 pm -
2 stops8h 15m
Deal found 9/25![Southwest logo]()
$509
This United Airlines deal was found by Cheapflights users on 9/26. 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 10/143:14 pm -
1 stop7h 30m
Tue 10/209:00 am -
1 stop4h 41m
Deal found 9/26![United Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 9/26. 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.
Wed 10/148:55 am -
2 stops7h 50m
Tue 10/202:35 pm -
1 stop5h 50m
Deal found 9/26![Southwest logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Wed 10/141:43 pm -
1 stop5h 53m
Sat 10/178:00 am -
2 stops7h 33m
Deal found 9/28![United Airlines logo]()
$504
This Southwest deal was found by Cheapflights users on 9/26. 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.
Wed 10/148:55 am -
1 stop4h 05m
Mon 10/192:25 pm -
1 stop5h 55m
Deal found 9/26![Southwest logo]()
$539
This Southwest deal was found by Cheapflights users on 9/26. 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.
Thu 10/158:45 am -
2 stops9h 20m
Sun 10/182:40 pm -
1 stop6h 40m
Deal found 9/26![Southwest logo]()
$568
One-way flights from Hayden to St. LouisSearch for one-way flight options from Hayden to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
Search for one-way flight options from Hayden to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This United Airlines deal was found by Cheapflights users on 9/26. 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 12/117:15 am -
1 stop4h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![United Airlines logo]()
$185
This Southwest deal was found by Cheapflights users on 9/26. 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 12/118:20 am -
2 stops9h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Southwest logo]()
$190
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Thu 10/81:43 pm -
1 stop5h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$250
This Southwest deal was found by Cheapflights users on 9/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:45 am -
2 stops9h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Southwest logo]()
$496
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 September 29, 2026.
Round-trip from | $419 (United Airlines) |
|---|---|
One-way from | $185 (United Airlines) |
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 7,457,451 searches. Data last updated September 29, 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
Cheapest round-trip
Quickest round-trip
HaydenSt. Louis
HDN Hayden Yampa Valley - STL Lambert-St Louis
HDNSTL
Hayden Yampa Valley
Fri 12/11
7:15 am-12:53 pm
1 stop4h 38m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
HaydenSt. Louis
HDN Hayden Yampa Valley - STL Lambert-St Louis
HDNSTL
Hayden Yampa Valley
Fri 12/11
8:20 am-7:00 pm
2 stops9h 40m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$190
HaydenSt. Louis
HDN Hayden Yampa Valley - STL Lambert-St Louis
HDNSTL
Hayden Yampa Valley
Thu 10/8
1:43 pm-8:36 pm
1 stop5h 53m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$250
HaydenSt. Louis
HDN Hayden Yampa Valley - STL Lambert-St Louis
HDNSTL
Hayden Yampa Valley
Tue 2/9
7:30 am-12:43 pm
1 stop4h 13m
Lambert-St Louis
Wed 2/10
9:13 am-2:38 pm
1 stop6h 25m
$454
HaydenSt. Louis
HDN Hayden Yampa Valley - STL Lambert-St Louis
HDNSTL
Hayden Yampa Valley
Wed 10/14
1:43 pm-8:36 pm
1 stop5h 53m
Lambert-St Louis
Sat 10/17
9:00 am-2:33 pm
1 stop6h 33m
$499
HaydenSt. Louis
HDN Hayden Yampa Valley - STL Lambert-St Louis
HDNSTL
Hayden Yampa Valley
Sat 10/10
1:43 pm-8:36 pm
1 stop5h 53m
Lambert-St Louis
Wed 10/14
4:39 pm-8:21 pm
1 stop4h 42m
$499
Sorted by cheapest first
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.
HDN-STL
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 September 29, 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.
Overall
7.4
Food
6.7
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentMichelle,Dec 2025
DEN - MKE
Overall
7.4
Food
6.7
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentMichelle,Dec 2025
DEN - MKE
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Chesterfield
Maryland Heights
Collinsville
Edwardsville
Glencoe
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Hayden and St. Louis flights
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Other flights from Hayden
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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 7,457,451 searches. Data last updated September 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$264 | Average$443 | FlexibilityNo cancel fee | On-time69% |