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Cheap flights from St. Louis to Flagstaff from $410

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 12/29. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
3:37 pm - 11:44 pmSTL-FLG
9h 07m2 stops
American Airlines Logo
1:18 pm - 7:29 pmFLG-STL
5h 11m1 stop
$416American Airlines
Find Deal
Fri, Feb 6 - Tue, Feb 10
American Airlines Logo
3:37 pm - 11:44 pmSTL-FLG
9h 07m2 stops
American Airlines Logo
7:24 am - 4:14 pmFLG-STL
7h 50m2 stops
$421American Airlines
Find Deal
Fri, Feb 6 - Tue, Feb 10
American Airlines Logo
2:29 pm - 6:35 pmSTL-FLG
5h 06m1 stop
American Airlines Logo
10:36 am - 11:07 pmFLG-STL
11h 31m2 stops
$426American Airlines
Find Deal
Mon, Nov 10 - Fri, Nov 14
American Airlines Logo
7:17 am - 10:49 amSTL-FLG
5h 32m1 stop
American Airlines Logo
3:09 pm - 11:47 pmFLG-STL
6h 38m1 stop
$436American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
2:36 pm - 10:37 pmSTL-FLG
10h 01m2 stops
American Airlines Logo
3:09 pm - 11:47 pmFLG-STL
6h 38m1 stop
$446American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
7:05 am - 12:03 pmSTL-FLG
5h 58m1 stop
American Airlines Logo
12:33 pm - 7:19 pmFLG-STL
5h 46m1 stop
$456American Airlines
Find Deal
Sat, Feb 21 - Sat, Feb 28
American Airlines Logo
7:17 am - 10:49 amSTL-FLG
5h 32m1 stop
American Airlines Logo
3:09 pm - 11:47 pmFLG-STL
6h 38m1 stop
$466American Airlines
Find Deal
Sun, Mar 8 - Thu, Mar 12
American Airlines Logo
10:03 am - 4:56 pmSTL-FLG
7h 53m2 stops
American Airlines Logo
7:21 am - 6:10 pmFLG-STL
9h 49m2 stops
$471American Airlines
Find Deal
Sat, Feb 21 - Sat, Feb 28
American Airlines Logo
7:17 am - 10:49 amSTL-FLG
5h 32m1 stop
American Airlines Logo
6:55 pm - 8:09 amFLG-STL
11h 14m2 stops
$476American Airlines
Find Deal
Sun, Mar 8 - Thu, Mar 12
American Airlines Logo
8:13 am - 6:35 pmSTL-FLG
11h 22m2 stops
American Airlines Logo
10:36 am - 11:07 pmFLG-STL
11h 31m2 stops
$481American Airlines
Find Deal
Mon, Nov 10 - Fri, Nov 14

American Airlines flights from St. Louis to Flagstaff

Our best American Airlines deals on St. Louis to Flagstaff flight tickets
American Airlines
Feb 6
STL3:37 pmLambert-St Louis
9h 07m
2 stops
FLG11:44 pmFlagstaff Pulliam
Feb 10
FLG1:18 pmFlagstaff Pulliam
5h 11m
1 stop
STL7:29 pmLambert-St Louis
$416
Find similar
American Airlines
Feb 6
STL3:37 pmLambert-St Louis
9h 07m
2 stops
FLG11:44 pmFlagstaff Pulliam
Feb 10
FLG7:24 amFlagstaff Pulliam
7h 50m
2 stops
STL4:14 pmLambert-St Louis
$421
Find similar
American Airlines
Nov 10
STL2:29 pmLambert-St Louis
5h 06m
1 stop
FLG6:35 pmFlagstaff Pulliam
Nov 14
FLG10:36 amFlagstaff Pulliam
11h 31m
2 stops
STL11:07 pmLambert-St Louis
$426
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 October 27, 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

Fri 2/6

3:37 pm-11:44 pm

2 stops9h 07m

Flagstaff Pulliam

Tue 2/10

1:18 pm-7:29 pm

1 stop5h 11m

$416

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Fri 2/6

3:37 pm-11:44 pm

2 stops9h 07m

Flagstaff Pulliam

Tue 2/10

7:24 am-4:14 pm

2 stops7h 50m

$421

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Mon 11/10

2:29 pm-6:35 pm

1 stop5h 06m

Flagstaff Pulliam

Fri 11/14

10:36 am-11:07 pm

2 stops11h 31m

$426

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Tue 3/10

7:17 am-10:49 am

1 stop5h 32m

Flagstaff Pulliam

Wed 3/11

3:09 pm-11:47 pm

1 stop6h 38m

$436

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Tue 3/10

2:36 pm-10:37 pm

2 stops10h 01m

Flagstaff Pulliam

Wed 3/11

3:09 pm-11:47 pm

1 stop6h 38m

$446

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Sat 2/21

7:05 am-12:03 pm

1 stop5h 58m

Flagstaff Pulliam

Sat 2/28

12:33 pm-7:19 pm

1 stop5h 46m

$456

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Sun 3/8

7:17 am-10:49 am

1 stop5h 32m

Flagstaff Pulliam

Thu 3/12

3:09 pm-11:47 pm

1 stop6h 38m

$466

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Sat 2/21

10:03 am-4:56 pm

2 stops7h 53m

Flagstaff Pulliam

Sat 2/28

7:21 am-6:10 pm

2 stops9h 49m

$471

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Sun 3/8

7:17 am-10:49 am

1 stop5h 32m

Flagstaff Pulliam

Thu 3/12

6:55 pm-8:09 am

2 stops11h 14m

$476

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Mon 11/10

8:13 am-6:35 pm

2 stops11h 22m

Flagstaff Pulliam

Fri 11/14

10:36 am-11:07 pm

2 stops11h 31m

$481

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 typical price of a round-trip flight between St. Louis and Flagstaff?

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 $440. 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.
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  • 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 06m 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 $400Free CancellationRating
7.2
11,033 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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