$381 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 9/5. 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

Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
11:42 am - 10:00 pm
FLG
-
ORD
8h 18m
1 stop
American Airlines Logo
6:00 am - 11:54 am
ORD
-
FLG
7h 54m
1 stop
$528American Airlines
Tue, Dec 29 - Sat, Jan 2
American Airlines Logo
4:07 pm - 11:35 pm
FLG
-
ORD
6h 28m
1 stop
American Airlines Logo
10:10 am - 3:35 pm
ORD
-
FLG
6h 25m
1 stop
$568American Airlines
Sat, Aug 1 - Wed, Aug 5
American Airlines Logo
10:17 am - 6:08 pm
FLG
-
ORD
5h 51m
1 stop
American Airlines Logo
5:00 am - 9:49 am
ORD
-
FLG
6h 49m
1 stop
$576American Airlines
Sun, Oct 18 - Sat, Oct 24
American Airlines Logo
12:45 pm - 9:20 pm
FLG
-
ORD
6h 35m
1 stop
American Airlines Logo
6:48 am - 11:16 am
ORD
-
FLG
6h 28m
1 stop
$578American Airlines
Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
12:35 pm - 9:16 pm
FLG
-
ORD
6h 41m
1 stop
American Airlines Logo
10:45 am - 5:49 pm
ORD
-
FLG
9h 04m
2 stops
$603American Airlines
Sat, Aug 1 - Wed, Aug 5
American Airlines Logo
10:17 am - 8:31 pm
FLG
-
ORD
8h 14m
2 stops
American Airlines Logo
5:00 am - 9:49 am
ORD
-
FLG
6h 49m
1 stop
$612American Airlines
Tue, Dec 29 - Sat, Jan 2
American Airlines Logo
12:30 pm - 10:00 pm
FLG
-
ORD
8h 30m
1 stop
American Airlines Logo
3:50 pm - 11:52 pm
ORD
-
FLG
9h 02m
2 stops
$613American Airlines
Thu, Aug 13 - Sun, Aug 16
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
$636American Airlines
Sat, Aug 1 - Wed, Aug 5
American Airlines Logo
10:17 am - 8:31 pm
FLG
-
ORD
8h 14m
2 stops
American Airlines Logo
5:00 am - 11:11 am
ORD
-
FLG
8h 11m
2 stops
$643American Airlines
Thu, Aug 13 - Sun, Aug 16
American Airlines Logo
11:42 am - 11:30 pm
FLG
-
ORD
9h 48m
2 stops
American Airlines Logo
7:00 am - 11:54 am
ORD
-
FLG
6h 54m
1 stop
$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 February, when tickets cost $406 (return) on average. On the other hand, the most expensive months are March and January, when the average cost of round-trip tickets is $893 and $810 respectively.

Good to know

Low season

September

Cheapest flight

$381
Best time to beat the crowds with an average 43% drop in price.
Most popular time to fly and prices are also 13% lower on average.
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 11826 reviews
6.4Food
7.5Boarding
6.8Entertainment
7.9Crew
7.2Comfort
Airline reviews

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

2.0 MediocreAnonymous, Jul 2026
PHL - ORD
Read more American Airlines reviews

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

I will never but. through kayak again. and American Airlines. I will never fly again on. They're both thieves.

Nothing, I wont be flying American Airlines again and will not be recommending anyone to fly American Airlines. It was the worst experience flying I've ever had.

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