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STL - FLG

$421 Find cheap flights from St. Louis to Flagstaff

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Flagstaff departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/8
Sat 6/15

Search hundreds of travel sites at once for deals on flights to Flagstaff

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Flagstaff, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Flagstaff, as well as popular online travel agencies
In the last 7 days travelers have searched 43,895,468 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Flagstaff that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:11 pm - 9:29 pmSTL-FLG
5h 18m1 stop
10:18 am - 5:19 pmFLG-STL
5h 01m1 stop
$421American Airlines
Find Deal
Mon, Jul 1 - Tue, Jul 9
9:23 am - 5:44 pmSTL-FLG
10h 21m2 stops
7:00 am - 4:50 pmFLG-STL
7h 50m1 stop
$429American Airlines
Find Deal
Mon, Jul 1 - Tue, Jul 9
9:23 am - 5:44 pmSTL-FLG
10h 21m2 stops
8:21 am - 6:40 pmFLG-STL
8h 19m2 stops
$434American Airlines
Find Deal
Mon, Jul 1 - Tue, Jul 9
6:09 pm - 9:29 pmSTL-FLG
5h 20m1 stop
10:18 am - 5:19 pmFLG-STL
5h 01m1 stop
$523American Airlines
Find Deal
Wed, Jul 10 - Sun, Jul 14
6:09 pm - 9:29 pmSTL-FLG
5h 20m1 stop
10:18 am - 10:52 pmFLG-STL
10h 34m2 stops
$533American Airlines
Find Deal
Wed, Jul 10 - Sun, Jul 14
7:00 am - 5:35 pmSTL-FLG
12h 35m2 stops
8:21 am - 6:40 pmFLG-STL
8h 19m2 stops
$538American Airlines
Find Deal
Wed, Jul 10 - Sun, Jul 14
6:11 pm - 9:29 pmSTL-FLG
5h 18m1 stop
10:18 am - 5:21 pmFLG-STL
5h 03m1 stop
$581American Airlines
Find Deal
Sun, Jun 23 - Fri, Jun 28
6:00 am - 11:17 amSTL-FLG
7h 17m2 stops
8:21 am - 5:21 pmFLG-STL
7h 00m1 stop
$591American Airlines
Find Deal
Sun, Jun 23 - Fri, Jun 28
7:40 am - 11:13 amSTL-FLG
5h 33m1 stop
10:18 am - 5:19 pmFLG-STL
5h 01m1 stop
$603American Airlines
Find Deal
Fri, Jul 19 - Fri, Jul 26
5:22 am - 11:13 amSTL-FLG
7h 51m2 stops
8:21 am - 5:19 pmFLG-STL
6h 58m1 stop
$613American Airlines
Find Deal
Fri, Jul 19 - Fri, Jul 26

Good to know

Low season

April

High season

May

Cheapest flight

$421
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from St. Louis to Flagstaff

When to book flights from St. Louis to Flagstaff

Are your dates flexible? Find out the best times to travel from St. Louis to Flagstaff based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Flagstaff

  • What is the cheapest flight from St. Louis to Flagstaff?

    In the last 3 days, the lowest price for a flight from St. Louis to Flagstaff was $594 for a one-way ticket and $421 for a round-trip.

  • Do I need a passport to fly between St. Louis and Flagstaff?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from St. Louis to Flagstaff?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Flagstaff?

    oneworld is the only airline alliance operating flights between St. Louis and Flagstaff.

  • How does KAYAK find such low prices on flights from St. Louis to Flagstaff?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Flagstaff.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Flagstaff?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Flagstaff from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Flagstaff?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Flagstaff with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and FLG can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Flagstaff?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Flagstaff from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from St. Louis to Flagstaff

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Flagstaff. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Flagstaff? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
American AirlinesOverall score based on 14665 reviews
8.0Crew
7.1Entertainment
7.2Comfort
7.6Boarding
6.6Food
Airline reviews

The CX617 from HK to BKK was delayed more than 1.5 hours.

2.0 MediocreAnonymous, May 2024STL - ORD
Read more about American Airlines reviews

The CX617 from HK to BKK was delayed more than 1.5 hours.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

Plane took off without me, my stepdad and a dozen other passengers. It went from an hour delay to boarding in 15 montures without notifying anyone. Names were not called overhead. Now I’m missing a day of work and stuck in Charolette overnight paying for a hotel and Ubers out of pocket

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

after boarding on phx to sjd, crew discovered that one of the megaphones was either out of date or not working. It took 90 minutes to get a replacement and do the "paperwork." That is really unacceptable. Why wasn't the megaphone problem discovered before boarding? Is it part of normal maintenance check? who is responsible for checking. How can paperwork take that long? Fortunately, SJD was final destination for most travelers so very few if any passengers had to miss connections.

Flight From PHX to CVG was on time, very professional staff

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Flight attendants used to be nice to people. And any flight over 5 hours should have some kind of food other than tiny pretzels and one drink comped.

just overall disappointing, not a treat to travel these days....paying for Main Cabin Extra was not worth it.

Book cheap flights from St. Louis to Flagstaff

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Flagstaff found on KAYAK in the last 72 hours.
10/8Tue
2 stopsAmerican Airlines
22h 58mSTL-FLG
$594
10/8Tue
1 stopAmerican Airlines
7h 31mSTL-FLG
$863

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St. Louis - Flagstaff Flights

Departure:

St. Louis (undefined)United States

Destination:

Flagstaff (FLG)United States

Cabin classes: