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Duluth

$124+ Cheap flights from Illinois to Duluth (DLH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DLH
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Illinois to Duluth

Keep the following information in mind while searching for Illinois to Duluth flight deals. Data was last updated September 15, 2025.

Round-trip from

$179
(United Airlines)

One-way from

$124
(United Airlines)

Popular in

June

Cheapest in

December

Average price

$334

Good round-trip deal

$247 or less
From Illinois to Duluth Intl
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One-way flight from Illinois to Duluth Intl
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Highest demand for flights based on searches. 13% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Illinois to Duluth Intl.
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Find flight deals from Illinois to Duluth

Cheapest flights from Illinois to Duluth
Explore the most affordable flight options available from Illinois to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:58 amORD - DLH
Nonstop1h 47mUnited Airlines
Sat 10/259:45 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 9/14$179
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/124:50 pmORD - DLH
Nonstop1h 47mUnited Airlines
Sun 10/199:45 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 9/13$183
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:58 amORD - DLH
Nonstop1h 47mUnited Airlines
Sun 10/199:45 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 9/14$184
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:15 pmORD - DLH
Nonstop1h 53mUnited Airlines
Sat 10/49:45 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 9/14$189
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:13 pmORD - DLH
Nonstop1h 46mUnited Airlines
Thu 12/112:57 pmDLH - ORD
Nonstop1h 59mUnited Airlines
Deal found 9/15$198
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:58 amORD - DLH
Nonstop1h 47mUnited Airlines
Mon 10/139:45 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 9/14$214
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amORD - DLH
1 stop5h 20mDelta
Sun 12/145:00 amDLH - ORD
1 stop3h 40mDelta
Deal found 9/15$228
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:02 pmMDW - DLH
1 stop16h 18mDelta
Mon 12/1512:01 pmDLH - MDW
1 stop6h 17mDelta
Deal found 9/15$237
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/88:40 pmORD - DLH
1 stop14h 40mDelta
Mon 12/1512:01 pmDLH - ORD
1 stop4h 53mDelta
Deal found 9/15$237
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/94:50 pmORD - DLH
Nonstop1h 47mUnited Airlines
Sun 10/1211:20 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 9/15$240
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:30 amSTL - DLH
1 stop4h 15mUnited Airlines
Sat 10/49:45 amDLH - STL
1 stop5h 59mUnited Airlines
Deal found 9/14$248
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:58 amORD - DLH
Nonstop1h 47mUnited Airlines
Sun 10/59:45 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 9/15$249

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Duluth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Illinois to Duluth that are best for you.

Fly from

Illinois

Fly to

Duluth

Route

Depart

Return

Price

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Sun 10/12

4:50 pm-6:37 pm

Nonstop1h 47m

Duluth Intl

Sun 10/19

9:45 am-11:40 am

Nonstop1h 55m

$183

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Fri 10/17

8:58 am-10:45 am

Nonstop1h 47m

Duluth Intl

Sun 10/19

9:45 am-11:40 am

Nonstop1h 55m

$184

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Fri 12/5

8:13 pm-9:59 pm

Nonstop1h 46m

Duluth Intl

Thu 12/11

2:57 pm-4:56 pm

Nonstop1h 59m

$198

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Thu 10/2

8:58 am-10:45 am

Nonstop1h 47m

Duluth Intl

Mon 10/13

9:45 am-11:40 am

Nonstop1h 55m

$214

ChicagoDuluth

MDW - DLH

MDWDLH

Chicago Midway

Mon 12/8

7:02 pm-11:20 am

1 stop16h 18m

Duluth Intl

Mon 12/15

12:01 pm-6:18 pm

1 stop6h 17m

$237

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Mon 12/8

8:40 pm-11:20 am

1 stop14h 40m

Duluth Intl

Sun 12/14

5:00 am-8:40 am

1 stop3h 40m

$237

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Mon 12/8

8:40 pm-11:20 am

1 stop14h 40m

Duluth Intl

Mon 12/15

12:01 pm-4:54 pm

1 stop4h 53m

$237

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Fri 9/26

4:50 pm-6:37 pm

Nonstop1h 47m

Duluth Intl

Sun 9/28

8:00 am-9:55 am

Nonstop1h 55m

$237

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Wed 10/22

8:58 am-10:45 am

Nonstop1h 47m

Duluth Intl

Sat 10/25

9:45 am-11:40 am

Nonstop1h 55m

$239

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Thu 10/2

6:30 am-10:45 am

1 stop4h 15m

Duluth Intl

Sat 10/4

9:45 am-3:44 pm

1 stop5h 59m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 51 results
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Best time to book a flight from Illinois to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Illinois to Duluth?

Currently, January is the cheapest month in which you can book a flight from Illinois to Duluth (average of $339). Flying from Illinois to Duluth in June is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to DLH?

Find hourly flight availability from Illinois to Duluth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Duluth as you normally would.

Weekly flight availability from Illinois to Duluth

Explore weekly flight availability from Illinois to Duluth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 15, 2025.

The most flights from USIL to DLH are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Duluth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Duluth from Illinois?

    Located just 5.8 mi from the city center, Duluth Intl (DLH) is the airport most travelers will use when flying to Duluth from Illinois.

  • How long is the flight from Illinois to Duluth?

    Departing from Illinois to Duluth will take you 1h 47m. The distance from Illinois to Duluth is about 397 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Illinois to Duluth?

    When deciding which route to take from Illinois to Duluth consider Chicago O'Hare Intl - Duluth Intl, Chicago Midway - Duluth Intl or Lambert-St Louis - Duluth Intl as they are the most popular.

  • What are the most reliable airlines from Illinois to Duluth?

    Consider Copa Airlines (91%), Air New Zealand (68%) or Emirates (59%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Duluth.

  • What are the cheapest flights from Illinois to Duluth?

    Looking at all options, your cheapest flight can be booked for $209. While the most popular route (Chicago O'Hare Intl - Duluth Intl) can be booked for $179 on average, our data indicates $329 when flying from Illinois to Duluth.

  • Can I find deals for flights from Illinois to Duluth that include hotel bookings?

    Yes. In addition to deals on Illinois to Duluth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Duluth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Duluth.

  • Can I find deals for business class flights from Illinois to Duluth?

    Yes. Cheapflights offers flight deals from Illinois to Duluth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Duluth?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Duluth (average of $339). Flying from Illinois to Duluth in June is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior

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Alternative routes for Illinois to Duluth

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Top airline flying from Illinois to Duluth

Discover the top airline that operate flights from Illinois to Duluth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$239Average$346FlexibilityNo cancel feeOn-time69%

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