$401 Find Cheap Flights from Flagstaff to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Flagstaff to Illinois departing on 9/6. 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
1 adult, Economy, 0 bags

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Book Cheap Flagstaff to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Flagstaff to Illinois 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Flagstaff to Illinois

Wed, Aug 5 - Sun, Aug 9
American Airlines Logo
12:35 pm - 9:16 pm
FLG
-
ORD
6h 41m
1 stop
American Airlines Logo
7:00 am - 11:54 am
ORD
-
FLG
6h 54m
1 stop
$528American Airlines
Thu, Aug 6 - Sun, Aug 9
American Airlines Logo
12:35 pm - 11:30 pm
FLG
-
ORD
8h 55m
1 stop
American Airlines Logo
6:59 am - 11:11 am
ORD
-
FLG
6h 12m
1 stop
$558American Airlines
Thu, Oct 29 - Sun, Nov 1
American Airlines Logo
7:15 am - 4:16 pm
FLG
-
ORD
7h 01m
1 stop
American Airlines Logo
7:00 pm - 11:43 pm
ORD
-
FLG
5h 43m
1 stop
$578American Airlines
Wed, Aug 5 - Sun, Aug 9
American Airlines Logo
10:30 am - 8:30 pm
FLG
-
ORD
8h 00m
2 stops
American Airlines Logo
6:59 am - 11:11 am
ORD
-
FLG
6h 12m
1 stop
$603American Airlines
Wed, Aug 5 - Sun, Aug 9
American Airlines Logo
12:35 pm - 9:16 pm
FLG
-
ORD
6h 41m
1 stop
American Airlines Logo
7:00 am - 11:54 am
ORD
-
FLG
6h 54m
1 stop
$618American Airlines
Fri, Jul 17 - Mon, Jul 20
American Airlines Logo
12:37 pm - 10:15 pm
FLG
-
ORD
7h 38m
1 stop
American Airlines Logo
7:25 am - 1:20 pm
ORD
-
FLG
7h 55m
1 stop
$636American Airlines
Fri, Aug 7 - Sun, Aug 9
American Airlines Logo
11:42 am - 10:00 pm
FLG
-
ORD
8h 18m
1 stop
American Airlines Logo
5:00 am - 9:49 am
ORD
-
FLG
6h 49m
1 stop
$648American Airlines
Wed, Aug 5 - Sun, Aug 9
American Airlines Logo
12:35 pm - 11:30 pm
FLG
-
ORD
8h 55m
1 stop
American Airlines Logo
5:00 am - 11:11 am
ORD
-
FLG
8h 11m
2 stops
$650American Airlines
Fri, Aug 7 - Sun, Aug 9
American Airlines Logo
12:35 pm - 10:13 pm
FLG
-
ORD
7h 38m
1 stop
American Airlines Logo
5:00 am - 11:11 am
ORD
-
FLG
8h 11m
2 stops
$680American Airlines
Fri, Jul 17 - Mon, Jul 20
American Airlines Logo
12:37 pm - 10:15 pm
FLG
-
ORD
7h 38m
1 stop
American Airlines Logo
6:04 am - 1:20 pm
ORD
-
FLG
9h 16m
2 stops
$702American Airlines
Booking Insights

KAYAK's insights & trends for Flagstaff to Illinois flights

Get data-powered insights and trends into flights from Flagstaff to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Flagstaff to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Flagstaff to Illinois departing in August.

What is the cheapest month to fly from Flagstaff to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Flagstaff to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Flagstaff to Illinois is August, when tickets cost $224 (return) on average. On the other hand, the most expensive months are March and April, when the average cost of round-trip tickets is $893 and $595 respectively.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$401
Best time to beat the crowds with an average 43% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Flagstaff to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Flagstaff to Illinois?

    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 Flagstaff to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Flagstaff to Illinois 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 Flagstaff to Illinois?

    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 from Flagstaff to Illinois with an airline and back with another airline.

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

    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 from Flagstaff to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Flagstaff to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Flagstaff to Illinois. 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 Flagstaff to Illinois? 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.
7.1
American AirlinesOverall score based on 11779 reviews
7.5Boarding
7.2Comfort
7.9Crew
6.4Food
6.8Entertainment
Airline reviews

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

8.0 ExcellentJoseph, Jul 2026
STL - ORD
Read more American Airlines reviews

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

The planes can use an actual cleaning. The armrest and seats do not appear to be cleaned on this one and most other planes.

Flight was delayed…once landed at ORD, no gates were available so made us wait for 56 minutes after we landed to let us out of the aircraft!

Food is what you expect on a plane. Nothing gluten free. But that is expected. Drinks, apple juice, was fine. Seat, what I expected. Fine.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

I liked the humor of the captain and crew on the flight from Flagstaff to Dallas. They were humorous.

Delayed delayed delayed and no offer for food or vouchers

Turn on the heat. Flight was way too cold from Arizona to Chicago.

Overall pleasant was delayed and caused transportation issue when landing

The flight was fine. I didn’t have any food or drink, but I believe they offered the usual cookie or pretzels and standard beverages. The crew was very friendly. The seats - like seats on just about all airlines - are a bit cramped - but I was relatively comfortable and the plane was clean. I’d fly American again for sure.

Everything you need to know for your flight from Flagstaff to Illinois

Information on your arrival and departure airports

Flagstaff (FLG)