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STL - FLG

$400 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
$504
Typical prices: $485-$655
American Airlines
Fri 2/2Tue 2/6
STL - FLG • 1 stop
Cheapest one-way
$400
Typical prices: $260-$415
American Airlines
Sun 12/23
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
Dallas/Fort Worth (DFW)
Cheapest • Avg $490 (round-trip)
Phoenix Sky Harbor Intl (PHX)
Shortest trip • 5h 50m (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

Tue, Feb 2 - Sat, Feb 6
American Airlines Logo
7:01 am - 12:52 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
6h 51m1 stop Dallas/Fort Worth
American Airlines Logo
7:29 am - 1:38 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
5h 09m1 stop Phoenix Sky Harbor Intl
$504American Airlines
Tue, Feb 2 - Sat, Feb 6
American Airlines Logo
11:22 am - 8:38 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
10h 16m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
7:29 am - 1:38 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
5h 09m1 stop Phoenix Sky Harbor Intl
$578American Airlines
Thu, Nov 19 - Mon, Nov 23
American Airlines Logo
5:00 am - 12:57 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
8h 57m1 stop Dallas/Fort Worth
American Airlines Logo
3:00 pm - 11:35 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
7h 35m1 stop Dallas/Fort Worth
$580American Airlines
Tue, Mar 16 - Sat, Mar 20
American Airlines Logo
2:31 pm - 7:38 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
7h 07m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
8:08 pm - 10:51 amFLG  Flagstaff Pulliam-STL Lambert-St Louis
12h 43m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
$608American Airlines
Thu, Nov 19 - Mon, Nov 23
American Airlines Logo
7:26 am - 6:40 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
12h 14m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
American Airlines Logo
7:37 am - 1:32 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
4h 55m1 stop Phoenix Sky Harbor Intl
$637American Airlines
Fri, Oct 16 - Tue, Oct 20
American Airlines Logo
5:40 am - 12:05 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
8h 25m1 stop Dallas/Fort Worth
American Airlines Logo
6:15 am - 1:37 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
5h 22m1 stop Phoenix Sky Harbor Intl
$642American Airlines
Mon, Oct 26 - Sun, Nov 1
American Airlines Logo
3:20 pm - 7:49 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
6h 29m1 stop Dallas/Fort Worth
American Airlines Logo
7:37 am - 1:38 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
5h 01m1 stop Phoenix Sky Harbor Intl
$642American Airlines
Tue, Feb 2 - Sat, Feb 6
American Airlines Logo
10:27 am - 8:38 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
11h 11m2 stops Charlotte Douglas Phoenix Sky Harbor Intl
American Airlines Logo
12:42 pm - 11:32 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
9h 50m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
$647American Airlines
Fri, Oct 16 - Tue, Oct 20
American Airlines Logo
3:20 pm - 7:49 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
6h 29m1 stop Dallas/Fort Worth
American Airlines Logo
10:34 am - 11:42 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
11h 08m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
$672American Airlines
Mon, Oct 26 - Sun, Nov 1
American Airlines Logo
6:32 am - 12:05 pmSTL  Lambert-St Louis-FLG Flagstaff Pulliam
7h 33m1 stop Dallas/Fort Worth
American Airlines Logo
12:41 pm - 11:55 pmFLG  Flagstaff Pulliam-STL Lambert-St Louis
10h 14m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
$676American 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 with more confidence.

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

Round-trip flights from St. Louis to Flagstaff typically range from $485 to $655. The lowest price found in the past 5 days was $504, on American Airlines.

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

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

What’s 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

$400
Beat the crowds with an average 49% drop in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

  • 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.

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

    A nonstop flight from St. Louis to Flagstaff takes 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.

  • 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.

  • 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 $504 to $935. That means the highest observed fare was about 85% 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 $418, which is 10% above the typical average for this route.

  • 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

  • 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).

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

    Connecting flights from St. Louis to Flagstaff most commonly pass through:

    • Phoenix Sky Harbor Intl (PHX) - 58% of one-stop connections
    • Dallas/Fort Worth (DFW) - 42% of one-stop connections

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

    Yes. Flexible dates can save you up to 37% on flights from St. Louis to Flagstaff. 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 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).

  • 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.

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 are flexible, aim for a Monday departure and avoid flying on Sunday. On this route, Monday flights average $501, about $290 less than Sunday fares (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).

More options for your flight from St. Louis to Flagstaff

Complete your trip to Flagstaff with a hotel stay or car rental

Car rentals in Flagstaff
Hotels in Flagstaff
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