$320+ Cheap flights from St. Louis to Montrose (STL - MTJ)
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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MTJ
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Montrose 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 St. Louis to Montrose
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Best
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Cheapest flights from St. Louis to MontroseExplore the most affordable flight options available from St. Louis to Montrose. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
Explore the most affordable flight options available from St. Louis to Montrose. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/169:00 am -
1 stop6h 27m
Wed 10/213:23 pm -
1 stop4h 13m
Deal found 9/16![United Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Mon 11/24:39 pm -
1 stop4h 51m
Mon 11/91:40 pm -
1 stop6h 19m
Deal found 9/20![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Fri 10/169:00 am -
1 stop6h 27m
Tue 10/203:23 pm -
1 stop4h 13m
Deal found 9/20![United Airlines logo]()
$352
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/108:50 am -
1 stop4h 46m
Wed 11/111:40 pm -
1 stop6h 19m
Deal found 9/15![United Airlines logo]()
$361
This Southwest deal was found by Cheapflights users on 9/16. 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 10/169:35 am -
2 stops10h 55m
Wed 10/218:35 am -
2 stops8h 10m
Deal found 9/16![Southwest logo]()
$380
This American Airlines deal was found by Cheapflights users on 9/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:32 am -
1 stop6h 51m
Tue 10/201:14 pm -
2 stops20h 36m
Deal found 9/20![American Airlines logo]()
$410
This Southwest deal was found by Cheapflights users on 9/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:35 am -
2 stops10h 55m
Tue 10/208:35 am -
2 stops8h 10m
Deal found 9/20![Southwest logo]()
$439
Best flights from St. Louis to MontroseDiscover carefully curated flight deals from St. Louis to Montrose that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from St. Louis to Montrose that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/169:00 am -
1 stop6h 27m
Wed 10/213:23 pm -
1 stop4h 13m
Deal found 9/16![United Airlines logo]()
$320
This Southwest deal was found by Cheapflights users on 9/16. 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 10/169:35 am -
2 stops10h 55m
Wed 10/218:35 am -
2 stops8h 10m
Deal found 9/16![Southwest logo]()
$380
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Mon 11/24:39 pm -
1 stop4h 51m
Mon 11/91:40 pm -
1 stop6h 19m
Deal found 9/20![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Fri 10/169:00 am -
1 stop6h 27m
Tue 10/203:23 pm -
1 stop4h 13m
Deal found 9/20![United Airlines logo]()
$352
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/108:50 am -
1 stop4h 46m
Wed 11/111:40 pm -
1 stop6h 19m
Deal found 9/15![United Airlines logo]()
$361
This Southwest deal was found by Cheapflights users on 9/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:35 am -
2 stops10h 55m
Tue 10/208:35 am -
2 stops8h 10m
Deal found 9/20![Southwest logo]()
$439
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/269:00 am -
1 stop4h 35m
Sat 10/37:15 am -
1 stop4h 25m
Deal found 9/16![United Airlines logo]()
$559
Last-minute flights from St. Louis to MontroseDiscover last-minute flight deals from St. Louis to Montrose. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Montrose. Data last updated September 21, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/1812:59 pm -
2 stops8h 26m
Tue 9/223:24 pm -
1 stop4h 14m
Deal found 9/16![United Airlines logo]()
$674
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/269:00 am -
1 stop4h 35m
Sat 10/37:15 am -
1 stop4h 25m
Deal found 9/16![United Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Mon 10/51:29 pm -
2 stops8h 08m
Fri 10/93:23 pm -
1 stop7h 21m
Deal found 9/20![United Airlines logo]()
$522
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/169:00 am -
1 stop6h 27m
Wed 10/213:23 pm -
1 stop4h 13m
Deal found 9/16![United Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Fri 10/169:00 am -
1 stop6h 27m
Tue 10/203:23 pm -
1 stop4h 13m
Deal found 9/20![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 9/16. 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 10/169:35 am -
2 stops10h 55m
Wed 10/218:35 am -
2 stops8h 10m
Deal found 9/16![Southwest logo]()
$380
This American Airlines deal was found by Cheapflights users on 9/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:32 am -
1 stop6h 51m
Tue 10/201:14 pm -
2 stops20h 36m
Deal found 9/20![American Airlines logo]()
$410
This Southwest deal was found by Cheapflights users on 9/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:35 am -
2 stops10h 55m
Tue 10/208:35 am -
2 stops8h 10m
Deal found 9/20![Southwest logo]()
$439
Find flight deals from St. Louis to Montrose
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Montrose (MTJ). 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 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $308 (Delta) |
Popular in | October |
Cheapest in | January |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Montrose 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 21, 2026.
Use the filters below to find and compare flights from St. Louis to Montrose that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisMontrose
STL Lambert-St Louis - MTJ Montrose County
STLMTJ
Lambert-St Louis
Fri 10/16
9:00 am-2:27 pm
1 stop6h 27m
Montrose County
Wed 10/21
3:23 pm-8:36 pm
1 stop4h 13m
$320
St. LouisMontrose
STL Lambert-St Louis - MTJ Montrose County
STLMTJ
Lambert-St Louis
Mon 11/2
4:39 pm-8:30 pm
1 stop4h 51m
Montrose County
Mon 11/9
1:40 pm-8:59 pm
1 stop6h 19m
$339
St. LouisMontrose
STL Lambert-St Louis - MTJ Montrose County
STLMTJ
Lambert-St Louis
Fri 10/16
9:00 am-2:27 pm
1 stop6h 27m
Montrose County
Tue 10/20
3:23 pm-8:36 pm
1 stop4h 13m
$352
St. LouisMontrose
STL Lambert-St Louis - MTJ Montrose County
STLMTJ
Lambert-St Louis
Tue 11/10
8:50 am-12:36 pm
1 stop4h 46m
Montrose County
Wed 11/11
1:40 pm-8:59 pm
1 stop6h 19m
$361
St. LouisMontrose
STL Lambert-St Louis - MTJ Montrose County
STLMTJ
Lambert-St Louis
Fri 10/16
9:35 am-7:30 pm
2 stops10h 55m
Montrose County
Wed 10/21
8:35 am-5:45 pm
2 stops8h 10m
$380
St. LouisMontrose
STL Lambert-St Louis - MTJ Montrose County
STLMTJ
Lambert-St Louis
Fri 10/16
9:35 am-7:30 pm
2 stops10h 55m
Montrose County
Tue 10/20
8:35 am-5:45 pm
2 stops8h 10m
$439
Quickest round-trip
St. LouisMontrose
STL Lambert-St Louis - MTJ Montrose County
STLMTJ
Lambert-St Louis
Sat 9/26
9:00 am-12:35 pm
1 stop4h 35m
Montrose County
Sat 10/3
7:15 am-12:40 pm
1 stop4h 25m
$559
Sorted by cheapest first
Compare providers for flights from St. Louis to Montrose
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 St. Louis to Montrose in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Montrose flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Montrose flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Montrose flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Montrose 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 St. Louis-Montrose 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 St. Louis to Montrose
Have a flexible travel schedule? Discover the best time to fly to Montrose from St. Louis with our price prediction graph.
STL-MTJ
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 Montrose
Get insights into the airlines that provide service to Montrose. 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 Montrose. Reviews last updated September 21, 2026.
Get a feel of what it's like to fly with United Airlines from St. Louis to Montrose by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Food
6.7
Overall
7.4
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Food
6.7
Overall
7.4
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Montrose. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Montrose
Explore flights to Montrose departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 21, 2026.
St. Louis and Montrose flights
Browse other St. Louis and Montrose flight options. Last updated on September 21, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from St. Louis to Montrose
Discover the top airline that operate flights from St. Louis to Montrose. 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 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$210 | Average$397 | FlexibilityNo cancel fee | On-time69% |