STL - FLG

$412 Find Cheap Flights from St. Louis to Flagstaff - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$484
Typical prices: $485-$655
American Airlines
Wed 10/17Wed 10/24
STL - FLG • 1 stop
Cheapest one-way
$412
Typical prices: $260-$415
American Airlines
Thu 11/1
STL - FLG • 1 stop
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Flagstaff. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
March
Cheapest • 14% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $349 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 5h 48m (one-way)
Insights
Insights
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Booking Insights
Flight Deals

Cheap Flights from St. Louis to Flagstaff (STL-FLG)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Flagstaff

Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
2:31 pm - 8:39 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
8h 08m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
11:52 am - 8:43 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
6h 51m1 stop Phoenix Sky Harbor Intl
$484American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
2:31 pm - 8:39 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
8h 08m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
11:52 am - 8:43 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
6h 51m1 stop Phoenix Sky Harbor Intl
$484American Airlines
Fri, Oct 23 - Wed, Oct 28
American Airlines Logo
5:40 am - 12:05 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
8h 25m1 stop Dallas/Fort Worth
American Airlines Logo
7:15 am - 5:03 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
7h 48m1 stop Dallas/Fort Worth
$522American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
12:46 pm - 8:39 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
9h 53m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
11:52 am - 8:43 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
6h 51m1 stop Phoenix Sky Harbor Intl
$558American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
12:49 pm - 8:39 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
9h 50m2 stops Charlotte Douglas Phoenix Sky Harbor Intl
American Airlines Logo
12:45 pm - 7:48 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
5h 03m1 stop Dallas/Fort Worth
$558American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
3:20 pm - 7:49 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
6h 29m1 stop Dallas/Fort Worth
American Airlines Logo
11:52 am - 11:42 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
9h 50m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
$558American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
12:46 pm - 8:39 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
9h 53m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
11:52 am - 8:43 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
6h 51m1 stop Phoenix Sky Harbor Intl
$558American Airlines
Fri, Sep 25 - Fri, Oct 2
American Airlines Logo
8:00 am - 11:13 amSTL  Lambert-St Louis-FLG Flagstaff Pulliam
5h 13m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
11:43 am - 8:52 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
7h 09m1 stop Phoenix Sky Harbor Intl
$591American Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Flagstaff flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Flagstaff with more confidence.

How much is a round-trip flight from St. Louis to Flagstaff?

Round-trip flights from St. Louis to Flagstaff start at $484. Prices are below average for this route right now, with typical round-trip fares ranging from $485 to $655. The lowest price found in the past 5 days was $484 on American Airlines.

What's the cheapest day of the week to fly from St. Louis to Flagstaff?

Monday is the cheapest day of the week to fly from St. Louis to Flagstaff, it is 12% cheaper than the average day. Sunday is the most expensive day with flight prices 40% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from St. Louis to Flagstaff?

  • March is the cheapest month to fly from St. Louis to Flagstaff at $485 round-trip.
  • December ($791) and June ($762) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 63% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for St. Louis to Flagstaff flights

Low season

July

Cheapest flight

$412
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 16% increase in price.
Flight from St. Louis to Flagstaff

When to book flights from St. Louis to Flagstaff

Are your dates flexible? Find out the best times to travel from St. Louis to Flagstaff based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Flagstaff flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from St. Louis to Flagstaff?

    Flights from St. Louis to Flagstaff usually depart from Lambert-St Louis (STL) and arrive at Flagstaff Pulliam (FLG).

  • What cabin classes can I book on flights from St. Louis to Flagstaff?

    Only Economy Class is available on flights from St. Louis to Flagstaff.

  • Which airports do connecting flights from St. Louis to Flagstaff pass through?

    One-stop flights from St. Louis to Flagstaff most commonly connect through:

    • Phoenix Sky Harbor Intl (PHX) - 54% of one-stop connections
    • Dallas/Fort Worth (DFW) - 39% of one-stop connections
    • Denver Intl (DEN) - 7% of one-stop connections

    Phoenix Sky Harbor Intl (PHX) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from St. Louis to Flagstaff?

    Yes. Being flexible with your travel dates can save you up to 37% on the St. Louis to Flagstaff route. Monday is the cheapest departure day at $501 round-trip on average, while Sunday is the most expensive at $791, a difference of $290. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from St. Louis to Flagstaff?

    A nonstop flight from St. Louis to Flagstaff takes 0h 00m, covering 1,199 miles.

  • Do I need a passport to fly from St. Louis to Flagstaff?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from St. Louis to Flagstaff changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $484 to $891. That means the highest observed fare was about 84% higher than the lowest one.

  • How are flight prices from St. Louis to Flagstaff looking right now?

    One-way fares from St. Louis to Flagstaff are currently higher than usual. Average one-way flight prices are about $415, which is 9% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from St. Louis to Flagstaff?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 5h 48m, compared with 5h 50m via Phoenix Sky Harbor Intl (PHX) and 6h 09m via Denver Intl (DEN).

  • What is the time difference between St. Louis and Flagstaff?

    Flagstaff is 2 hours behind St. Louis (Mountain Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Flagstaff Pulliam Airport (FLG)?

    Flagstaff Pulliam Airport (FLG) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
    · Budget
    · Hertz
    · Alamo
    · Dollar
    · Enterprise Rent-A-Car

  • How much should I expect to pay for a St. Louis to Flagstaff flight?

    Round-trip flights from St. Louis to Flagstaff range from $485 to $655, with an average of $565 over the past 12 months. Anything below $485 counts as a good deal.

Your guide to booking St. Louis to Flagstaff flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Sunday. On this route, Monday flights average $501 - about $290 less than Sunday (37% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Flagstaff trip for March. Fares historically average $485 round-trip in that month - typically $306 less than the most expensive month, which is December (based on the last 12 months).

Everything you need to know for your flight from St. Louis to Flagstaff

Information on your arrival and departure airports

St. Louis (STL)
Flagstaff (FLG)