$250 Cheap Flights from St. Louis (STL) to Flagstaff (FLG)

View $250 flight on Mon, Nov 3, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Flagstaff Pulliam Field (FLG)

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

Prices were available within the past 7 days and start at $250 for one-way flights and $356 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 3 - Thu, Nov 6
STL
St. Louis
FLG
Flagstaff
$356 Roundtrip, found 18 hours ago
$356
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 3 from St. Louis to Flagstaff, returning Thu, Nov 6, priced at $356 found 18 hours ago
American Airlines
Mon, Oct 13 - Fri, Oct 17
STL
St. Louis
FLG
Flagstaff
$366 Roundtrip, found 4 days ago
$366
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Oct 13 from St. Louis to Flagstaff, returning Fri, Oct 17, priced at $366 found 4 days ago
American Airlines
Sun, Oct 26 - Sat, Nov 1
STL
St. Louis
FLG
Flagstaff
$406 Roundtrip, just found
$406
Roundtrip
just found
Select American Airlines flight, departing Sun, Oct 26 from St. Louis to Flagstaff, returning Sat, Nov 1, priced at $406 just found
American Airlines
Thu, Nov 13 - Tue, Nov 18
STL
St. Louis
FLG
Flagstaff
$416 Roundtrip, found 5 days ago
$416
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Nov 13 from St. Louis to Flagstaff, returning Tue, Nov 18, priced at $416 found 5 days ago
American Airlines
Mon, May 4 - Fri, May 8
STL
St. Louis
FLG
Flagstaff
$436 Roundtrip, just found
$436
Roundtrip
just found
Select American Airlines flight, departing Mon, May 4 from St. Louis to Flagstaff, returning Fri, May 8, priced at $436 just found
American Airlines
Mon, Oct 13 - Tue, Oct 28
STL
St. Louis
FLG
Flagstaff
$446 Roundtrip, found 9 hours ago
$446
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Mon, Oct 13 from St. Louis to Flagstaff, returning Tue, Oct 28, priced at $446 found 9 hours ago
American Airlines
Tue, Apr 14 - Fri, May 1
STL
St. Louis
FLG
Flagstaff
$451 Roundtrip, found 4 days ago
$451
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Apr 14 from St. Louis to Flagstaff, returning Fri, May 1, priced at $451 found 4 days ago
American Airlines
Sun, Oct 26 - Sat, Nov 1
STL
St. Louis
FLG
Flagstaff
$452 Roundtrip, found 2 days ago
$452
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Oct 26 from St. Louis to Flagstaff, returning Sat, Nov 1, priced at $452 found 2 days ago
American Airlines
Sun, Feb 22 - Tue, Mar 10
STL
St. Louis
FLG
Flagstaff
$456 Roundtrip, found 1 day ago
$456
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Feb 22 from St. Louis to Flagstaff, returning Tue, Mar 10, priced at $456 found 1 day ago
American Airlines
Sun, Oct 26 - Sat, Nov 1
STL
St. Louis
FLG
Flagstaff
$459 Roundtrip, just found
$459
Roundtrip
just found
Select American Airlines flight, departing Sun, Oct 26 from St. Louis to Flagstaff, returning Sat, Nov 1, priced at $459 just found

Find the cheapest month to fly from St. Louis (STL) to Flagstaff (FLG)

November is typically the cheapest month to fly

From $335 - $745 per traveler.

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG) cost?
Secure a cheap one-way flight from $250 or cheap return flight from $356 from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG)?
The cheapest month to fly from STL to FLG is November, when demand is low. Off-peak months are typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to FLG flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG)?
There are no daily direct flights from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from STL to FLG?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG) last-minute?
Last-minute bookings from STL to FLG are generally more expensive. To secure the lowest rates, start looking for flights ahead of time. That said, if your travel plans are flexible, you may land a cheap fare right before your trip.
Is it cheaper to book a STL to FLG flight and hotel package?
Securing a STL to FLG flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our impressive range of accommodations and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG)?
Typically, you can cancel or reschedule your STL to FLG flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need more information, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Flagstaff Pulliam Field
Airlines serving
American Airlines
Roundtrip price
$355
Distance
1199 mi

Book with confidence

Book with confidence

St. Louis to Flagstaff Flights

The cheapest times to fly from St. Louis to Flagstaff

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Flagstaff are during the month of November. You can find some of the cheapest flights from St. Louis to Flagstaff with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Flagstaff

Sunday is one of the best days to book for cheap flights from St. Louis to Flagstaff: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Flagstaff

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Flagstaff in 2025. You can also book with separate airlines for your outbound and return journeys, from $250 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Flagstaff flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Flagstaff airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Flagstaff Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.