Cheap flights from St. Louis to Flagstaff from $250
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 10/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights
American Airlines flights from St. Louis to Flagstaff
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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 $485. The month of June is another great option to travel to Flagstaff, with average flight prices from St. Louis averaging around $495.
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
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
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 16m 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?
As of July 2025, there is 1 operator available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Flagstaff is American Airlines, representing 100% of all bookings.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $435 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near Flagstaff?
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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.