$438+ Cheap flights from Flagstaff to St. Louis (FLG - 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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
FLG — STL
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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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 Flagstaff to St. Louis
Cheapest
Best
One-way
Cheapest flights from Flagstaff to St. LouisExplore the most affordable flight options available from Flagstaff to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Flagstaff to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/241:16 pm -
1 stop5h 20m
Tue 12/296:57 pm -
1 stop18h 49m
Deal found 10/21![American Airlines logo]()
$673
Best flights from Flagstaff to St. LouisDiscover carefully curated flight deals from Flagstaff to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Flagstaff to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Thu 12/241:16 pm -
1 stop5h 20m
Tue 12/296:57 pm -
1 stop18h 49m
Deal found 10/23![American Airlines logo]()
$673
One-way flights from Flagstaff to St. LouisSearch for one-way flight options from Flagstaff to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Flagstaff to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:16 am -
2 stops9h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:16 am -
3 stops50h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$1,157
Find flight deals from Flagstaff to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Flagstaff (FLG) 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 October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $673 (American Airlines) |
One-way from | $438 (American Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Flagstaff 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 October 25, 2026.
Use the filters below to find and compare flights from Flagstaff to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
FlagstaffSt. Louis
FLG Flagstaff Pulliam - STL Lambert-St Louis
FLGSTL
Flagstaff Pulliam
Mon 11/9
11:16 am-9:56 pm
2 stops9h 40m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$438
FlagstaffSt. Louis
FLG Flagstaff Pulliam - STL Lambert-St Louis
FLGSTL
Flagstaff Pulliam
Thu 12/24
1:16 pm-7:36 pm
1 stop5h 20m
Lambert-St Louis
Tue 12/29
6:57 pm-12:46 pm
1 stop18h 49m
$673
FlagstaffSt. Louis
FLG Flagstaff Pulliam - STL Lambert-St Louis
FLGSTL
Flagstaff Pulliam
Mon 11/9
11:16 am-2:46 pm
3 stops50h 30m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$1,157
Sorted by cheapest first
Compare providers for flights from Flagstaff to St. Louis
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 Flagstaff to St. Louis in October.
| 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 Flagstaff-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Flagstaff-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Flagstaff-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Flagstaff-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 Flagstaff-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 Flagstaff to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Flagstaff with our price prediction graph.
FLG-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 October 25, 2026.
Get a feel of what it's like to fly with American Airlines from Flagstaff to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
7.9
Entertainment
6.8
Comfort
7.1
Overall
7.0
Boarding
7.4
Food
6.4
Reviews
1 / 20
4.0
OkayAmanda,Sep 2023
PHX - OGG
Crew
7.9
Entertainment
6.8
Comfort
7.1
Overall
7.0
Boarding
7.4
Food
6.4
Reviews
1 / 20
4.0
OkayAmanda,Sep 2023
PHX - OGG
Related info for your journey
Find useful and relevant information for your journey from Flagstaff 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
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Eureka
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Collinsville
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Glencoe
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Top airline flying from Flagstaff to St. Louis
Discover the top airline that operate flights from Flagstaff 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 October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$365 | Average$575 | FlexibilityNo cancel fee | On-time71% |