$200 Cheap Flights from St. Louis (STL) to Flagstaff (FLG)

View $200 flight on Tue, Jul 22, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $200 for one-way flights and $336 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Sep 16 - Thu, Sep 25
STL
St. Louis
FLG
Flagstaff
$336 Roundtrip, found 1 day ago
$336
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Sep 16 from St. Louis to Flagstaff, returning Thu, Sep 25, priced at $336 found 1 day ago
American Airlines
Mon, Nov 3 - Thu, Nov 6
STL
St. Louis
FLG
Flagstaff
$351 Roundtrip, found 4 days ago
$351
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 3 from St. Louis to Flagstaff, returning Thu, Nov 6, priced at $351 found 4 days ago
American Airlines
Sun, Jun 7 - Wed, Jun 10
STL
St. Louis
FLG
Flagstaff
$356 Roundtrip, found 6 days ago
$356
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Jun 7 from St. Louis to Flagstaff, returning Wed, Jun 10, priced at $356 found 6 days ago
American Airlines
Tue, Jul 8 - Tue, Jul 15
STL
St. Louis
FLG
Flagstaff
$376 Roundtrip, found 2 days ago
$376
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Jul 8 from St. Louis to Flagstaff, returning Tue, Jul 15, priced at $376 found 2 days ago
American Airlines
Mon, Oct 27 - Thu, Oct 30
STL
St. Louis
FLG
Flagstaff
$377 Roundtrip, found 2 days ago
$377
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Oct 27 from St. Louis to Flagstaff, returning Thu, Oct 30, priced at $377 found 2 days ago
American Airlines
Mon, Oct 27 - Thu, Oct 30
STL
St. Louis
FLG
Flagstaff
$379 Roundtrip, found 2 days ago
$379
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Oct 27 from St. Louis to Flagstaff, returning Thu, Oct 30, priced at $379 found 2 days ago
American Airlines
Mon, Oct 27 - Thu, Oct 30
STL
St. Louis
FLG
Flagstaff
$381 Roundtrip, found 2 days ago
$381
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Oct 27 from St. Louis to Flagstaff, returning Thu, Oct 30, priced at $381 found 2 days ago
American Airlines
Sat, Nov 8 - Tue, Nov 11
STL
St. Louis
FLG
Flagstaff
$386 Roundtrip, found 3 days ago
$386
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Nov 8 from St. Louis to Flagstaff, returning Tue, Nov 11, priced at $386 found 3 days ago
American Airlines
Wed, Sep 17 - Fri, Sep 26
STL
St. Louis
FLG
Flagstaff
$394 Roundtrip, found 6 days ago
$394
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Sep 17 from St. Louis to Flagstaff, returning Fri, Sep 26, priced at $394 found 6 days ago
American Airlines
Fri, Sep 5 - Fri, Sep 12
STL
St. Louis
FLG
Flagstaff
$396 Roundtrip, found 2 days ago
$396
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Sep 5 from St. Louis to Flagstaff, returning Fri, Sep 12, priced at $396 found 2 days ago

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

April is typically the cheapest month to fly

From $385 - $645 per traveler.

Graph displaying average flight prices per month

Alternative airports near Flagstaff

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Flagstaff Pulliam Field FLG. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $551
FLG
Flagstaff Pulliam Field
CheapestClosest
Average driving time to city center9 min
Flights from $551
Flights from St. Louis (STL) to Flagstaff (FLG)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Flagstaff Pulliam Field
Airlines serving
American Airlines
Roundtrip price
$335
Distance
1199 mi

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 September. 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 $200 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.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Flagstaff Pulliam Field Airport (FLG) cost?
Discover the latest flight deals from STL to FLG by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to FLG?
The cheapest flights from STL to FLG are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to FLG?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to FLG. Sort your results by "Price (lowest to highest)" to snap up a great deal.
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.

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*Available to One Key members.