$179 Find Cheap Flights from Duluth to Illinois

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Duluth to Illinois departing on 11/21. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Duluth to Illinois, 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 Duluth to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Duluth 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 Duluth 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 Duluth to Illinois

Fri, Nov 21 - Sun, Nov 23
United Airlines Logo
3:06 pm - 5:05 pmDLH-ORD
1h 59mnonstop
United Airlines Logo
8:51 am - 10:38 amORD-DLH
1h 47mnonstop
$179United Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
Delta Logo
5:00 am - 9:19 amDLH-MDW
4h 19m1 stop
Delta Logo
1:50 pm - 7:35 pmMDW-DLH
5h 45m1 stop
$198Delta
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Fri, Nov 28 - Tue, Dec 9
Delta Logo
5:10 am - 11:34 amDLH-ORD
6h 24m1 stop
Delta Logo
6:00 am - 11:20 amORD-DLH
5h 20m1 stop
$198Delta
Find Deal
Sat, Dec 6 - Wed, Dec 10
Delta Logo
5:00 am - 12:34 pmDLH-MDW
7h 34m2 stops
Delta Logo
7:02 pm - 11:59 pmMDW-DLH
4h 57m1 stop
$204Delta
Find Deal
Sat, Dec 6 - Wed, Dec 10
Delta Logo
12:01 pm - 8:35 pmDLH-ORD
8h 34m2 stops
Delta Logo
6:00 am - 11:20 amORD-DLH
5h 20m1 stop
$204Delta
Find Deal
Fri, Jan 16 - Sun, Jan 18
United Airlines Logo
3:05 pm - 5:10 pmDLH-ORD
2h 05mnonstop
United Airlines Logo
8:09 pm - 9:59 pmORD-DLH
1h 50mnonstop
$209United Airlines
Find Deal
Fri, Jan 9 - Sun, Jan 11
Delta Logo
12:00 pm - 6:08 pmDLH-MDW
6h 08m1 stop
Delta Logo
6:45 pm - 11:02 pmMDW-DLH
4h 17m1 stop
$228Delta
Find Deal
Sat, Nov 15 - Mon, Nov 17
Delta Logo
4:18 pm - 9:36 pmDLH-ORD
5h 18m1 stop
Delta Logo
6:00 am - 11:21 amORD-DLH
5h 21m1 stop
$228Delta
Find Deal
Sat, Nov 15 - Mon, Nov 17
Delta Logo
12:01 pm - 8:29 pmDLH-ORD
8h 28m2 stops
Delta Logo
6:00 am - 11:21 amORD-DLH
5h 21m1 stop
$234Delta
Find Deal
Tue, Nov 11 - Tue, Nov 18
United Airlines Logo
7:55 am - 9:54 amDLH-ORD
1h 59mnonstop
United Airlines Logo
12:54 pm - 2:31 pmORD-DLH
1h 37mnonstop
$239United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Duluth to Illinois flights

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

What is the cheapest Duluth to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Duluth found in the last 72 hours was to Chicago, at $243 round-trip. The most popular route is from Duluth (DLH) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $243.

Can I save money by flying with a layover from Duluth to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $294, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Duluth 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 Duluth to Illinois is December, when tickets cost $262 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $681 and $414 respectively.

What’s the cheapest day of the week to fly from Duluth to Illinois?

The average price of all round-trip flights from Duluth to Illinois clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Illinois on a Friday and more expensive on a Sunday. On your return trip to Duluth, you should consider flying back on a Saturday, and avoid Sundays for better deals.

Good to know

Low seasonJuly
Cheapest flight$179
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Duluth to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Duluth 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 Duluth to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Duluth 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 Duluth 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 Duluth 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 Duluth 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 Duluth to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $504 on average. Morning departures are around 3% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $529.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Duluth to the following destinations at these prices or less: Chicago $203 one-way - $325 round-trip

Reviews of the top airlines flying from Duluth to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Duluth 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 Duluth 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.
7.9
DeltaOverall score based on 7978 reviews
7.9Comfort
8.2Boarding
7.9Entertainment
8.5Crew
7.3Food
Airline reviews

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

6.0 GoodDavid, Oct 2025LAX - JFK
Read more Delta reviews

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

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

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