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Cheap flights from St. Louis to Flagstaff from $200

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Flagstaff departing on 11/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Flagstaff (STL-FLG)

Cheap round-trip flights

American Airlines Logo
3:59 pm - 7:43 pmSTL-FLG
5h 44m1 stop
American Airlines Logo
10:38 am - 11:07 pmFLG-STL
10h 29m2 stops
$346American Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
American Airlines Logo
1:53 pm - 8:18 pmSTL-FLG
8h 25m2 stops
American Airlines Logo
11:55 am - 10:50 pmFLG-STL
8h 55m2 stops
$351American Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
American Airlines Logo
5:17 am - 12:20 pmSTL-FLG
8h 03m1 stop
American Airlines Logo
1:37 pm - 10:58 pmFLG-STL
8h 21m1 stop
$380American Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 19
American Airlines Logo
2:45 pm - 8:49 pmSTL-FLG
7h 04m1 stop
American Airlines Logo
6:39 am - 1:42 pmFLG-STL
6h 03m1 stop
$386American Airlines
Find Deal
Fri, Feb 6 - Tue, Feb 10
American Airlines Logo
5:17 am - 1:00 pmSTL-FLG
8h 43m2 stops
American Airlines Logo
4:04 pm - 11:50 pmFLG-STL
6h 46m1 stop
$390American Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 19
American Airlines Logo
8:00 am - 11:25 amSTL-FLG
5h 25m1 stop
American Airlines Logo
8:00 am - 6:22 pmFLG-STL
8h 22m2 stops
$396American Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
American Airlines Logo
7:16 am - 4:54 pmSTL-FLG
11h 38m2 stops
American Airlines Logo
8:00 am - 6:22 pmFLG-STL
8h 22m2 stops
$401American Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
American Airlines Logo
6:21 pm - 10:54 pmSTL-FLG
6h 33m1 stop
American Airlines Logo
1:20 pm - 8:27 pmFLG-STL
5h 07m1 stop
$416American Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
American Airlines Logo
6:21 pm - 10:54 pmSTL-FLG
6h 33m1 stop
American Airlines Logo
8:00 am - 8:53 pmFLG-STL
10h 53m2 stops
$426American Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
American Airlines Logo
8:00 am - 11:25 amSTL-FLG
5h 25m1 stop
American Airlines Logo
10:38 am - 8:25 pmFLG-STL
7h 47m1 stop
$466American Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24

American Airlines flights from St. Louis to Flagstaff

Our best American Airlines deals on St. Louis to Flagstaff flight tickets
American Airlines
Sep 16
STL3:59 pmLambert-St Louis
5h 44m
1 stop
FLG7:43 pmFlagstaff Pulliam
Sep 23
FLG10:38 amFlagstaff Pulliam
10h 29m
2 stops
STL11:07 pmLambert-St Louis
$346
Find similar
American Airlines
Sep 16
STL1:53 pmLambert-St Louis
8h 25m
2 stops
FLG8:18 pmFlagstaff Pulliam
Sep 23
FLG11:55 amFlagstaff Pulliam
8h 55m
2 stops
STL10:50 pmLambert-St Louis
$351
Find similar
American Airlines
Nov 19
STL5:17 amLambert-St Louis
8h 03m
1 stop
FLG12:20 pmFlagstaff Pulliam
Nov 19
FLG1:37 pmFlagstaff Pulliam
8h 21m
1 stop
STL10:58 pmLambert-St Louis
$380
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Flagstaff 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, momondo users made 832,500 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from St. Louis to Flagstaff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Tue 9/16

3:59 pm-7:43 pm

1 stop5h 44m

Flagstaff Pulliam

Tue 9/23

10:38 am-11:07 pm

2 stops10h 29m

$346

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Tue 9/16

1:53 pm-8:18 pm

2 stops8h 25m

Flagstaff Pulliam

Tue 9/23

11:55 am-10:50 pm

2 stops8h 55m

$351

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Wed 11/19

5:17 am-12:20 pm

1 stop8h 03m

Flagstaff Pulliam

Wed 11/19

1:37 pm-10:58 pm

1 stop8h 21m

$380

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Fri 2/6

2:45 pm-8:49 pm

1 stop7h 04m

Flagstaff Pulliam

Tue 2/10

6:39 am-1:42 pm

1 stop6h 03m

$386

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Wed 11/19

5:17 am-1:00 pm

2 stops8h 43m

Flagstaff Pulliam

Wed 11/19

4:04 pm-11:50 pm

1 stop6h 46m

$390

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Wed 9/17

8:00 am-11:25 am

1 stop5h 25m

Flagstaff Pulliam

Wed 9/24

8:00 am-6:22 pm

2 stops8h 22m

$396

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Wed 9/17

7:16 am-4:54 pm

2 stops11h 38m

Flagstaff Pulliam

Wed 9/24

8:00 am-6:22 pm

2 stops8h 22m

$401

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Fri 10/17

6:21 pm-10:54 pm

1 stop6h 33m

Flagstaff Pulliam

Tue 10/21

1:20 pm-8:27 pm

1 stop5h 07m

$416

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Fri 10/17

6:21 pm-10:54 pm

1 stop6h 33m

Flagstaff Pulliam

Tue 10/21

8:00 am-8:53 pm

2 stops10h 53m

$426

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Wed 9/17

8:00 am-11:25 am

1 stop5h 25m

Flagstaff Pulliam

Wed 9/24

10:38 am-8:25 pm

1 stop7h 47m

$466

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Flagstaff from

How to get the cheapest flight ticket from St. Louis to Flagstaff

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Flagstaff?

The month of September is, on average, the cheapest month to fly to Flagstaff from St. Louis, with most prices found around $445. The month of August is another great option to travel to Flagstaff, with average flight prices from St. Louis averaging around $465.

What is the cheapest day to depart on your flight to Flagstaff?

According to our data, Saturday is the cheapest day to fly to Flagstaff from St. Louis. The lowest ticket price found for a Saturday departure recently was $563. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $685. These prices are subject to change though, so be sure to set up a Price Alert for flights to Flagstaff.

What is the cheapest time of day to depart on your flight to Flagstaff?

The cheapest time of day to fly to Flagstaff is in the morning when flights can be purchased for as low as $633. Flights to Flagstaff are more costly at noon, with an average ticket price of $660. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on St. Louis to Flagstaff flights?

You could potentially save up to 33% on your flight if you consider stops on a St. Louis to Flagstaff flight.

When to book flights from St. Louis to Flagstaff

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Flagstaff according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Flagstaff (STL to FLG) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Flagstaff

Direct flights

None
There are no direct flights from St. Louis to Flagstaff. There are no popular flight routes from St. Louis to Flagstaff.
Search flight deals

  • How far is Lambert-St Louis to Flagstaff Pulliam by plane?

    A flight from Lambert-St Louis to Flagstaff Pulliam will travel around 1204.8 mi. Typically, this will take 5h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Flagstaff Pulliam Airport?

    Prices for flights from Lambert-St Louis Airport to Flagstaff Pulliam Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Flagstaff Pulliam Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Flagstaff Pulliam Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Flagstaff Pulliam Airport.

  • What documentation or ID do you need to fly to Flagstaff Pulliam Airport?

    The travel and health documents you'll need for your trip to Flagstaff Pulliam Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Flagstaff Pulliam Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Flagstaff?

Best airlines flying from St. Louis to Flagstaff

Compare and see reviews for airlines that fly from St. Louis to Flagstaff with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $435Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Flagstaff?

Book flights to Flagstaff if you plan to visit one of these locations
Sedona
Williams
Winslow

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Flagstaff?

Finding the right flight to Flagstaff from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Flagstaff quick and easy, saving you time and money.

Can I find flights from St. Louis to Flagstaff with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Flagstaff from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Flagstaff?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Flagstaff.

I’m not ready to book a flight from St. Louis to Flagstaff right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Flagstaff, momondo offers a useful price alert feature which will track prices for flights to Flagstaff from St. Louis and alert you when they change.

An easier way to manage your Flagstaff trip

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