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Duluth

$179+ Cheap flights from Illinois to Duluth (DLH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DLH
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap 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 February 4, 2026.

This United Airlines deal was found by Cheapflights users on 2/3. 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 3/54:24 pm
ORD
-
DLH
Nonstop1h 44m
United Airlines
Thu 3/123:07 pm
DLH
-
ORD
Nonstop1h 46m
United Airlines
Deal found 2/3$179
This United Airlines deal was found by Cheapflights users on 2/3. 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 5/218:40 am
ORD
-
DLH
Nonstop1h 55m
United Airlines
Mon 5/256:10 pm
DLH
-
ORD
Nonstop1h 57m
United Airlines
Deal found 2/3$186
This United Airlines deal was found by Cheapflights users on 2/1. 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 6/103:40 pm
ORD
-
DLH
Nonstop1h 54m
United Airlines
Wed 6/177:45 am
DLH
-
ORD
Nonstop1h 57m
United Airlines
Deal found 2/1$191
This United Airlines deal was found by Cheapflights users on 2/3. 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 5/293:40 pm
ORD
-
DLH
Nonstop1h 54m
United Airlines
Sun 5/316:10 pm
DLH
-
ORD
Nonstop1h 57m
United Airlines
Deal found 2/3$192
This Delta deal was found by Cheapflights users on 2/2. 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.
Wed 2/256:15 am
ORD
-
DLH
1 stop5h 15m
Delta
Sat 2/2812:15 pm
DLH
-
ORD
1 stop5h 46m
Delta
Deal found 2/2$198
This United Airlines deal was found by Cheapflights users on 2/3. 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 2/178:50 am
ORD
-
DLH
Nonstop1h 53m
United Airlines
Sat 2/213:19 pm
DLH
-
ORD
Nonstop1h 46m
United Airlines
Deal found 2/3$209
This United Airlines deal was found by Cheapflights users on 2/3. 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 2/258:50 am
ORD
-
DLH
Nonstop1h 53m
United Airlines
Sat 2/283:19 pm
DLH
-
ORD
Nonstop1h 46m
United Airlines
Deal found 2/3$211
This Delta deal was found by Cheapflights users on 2/2. 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.
Wed 2/251:49 pm
MDW
-
DLH
1 stop5h 43m
Delta
Sat 2/2812:15 pm
DLH
-
MDW
1 stop3h 59m
Delta
Deal found 2/2$213
This Delta deal was found by Cheapflights users on 2/3. 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 2/177:20 pm
MDW
-
DLH
1 stop4h 35m
Delta
Sat 2/215:00 am
DLH
-
MDW
1 stop6h 03m
Delta
Deal found 2/3$228
This Delta deal was found by Cheapflights users on 2/3. 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 2/178:50 am
ORD
-
DLH
1 stop6h 41m
Delta
Sat 2/215:00 am
DLH
-
ORD
1 stop5h 25m
Delta
Deal found 2/3$228
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/54:24 pm
ORD
-
DLH
Nonstop1h 44m
United Airlines
Sun 3/86:43 pm
DLH
-
ORD
Nonstop1h 49m
United Airlines
Deal found 2/3$239
This Delta deal was found by Cheapflights users on 2/3. 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.
Fri 5/228:05 pm
ORD
-
DLH
1 stop3h 33m
Delta
Mon 5/2512:00 pm
DLH
-
ORD
1 stop4h 52m
Delta
Deal found 2/3$243

Find flight deals from Illinois to Duluth

Keep the following information in mind while searching for Illinois to Duluth flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$349

Good round-trip deal

$283 or less
Provider with most accurate pricing for Chicago (CHI)-Duluth Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Duluth Intl flights.
Search Deals
From Illinois to Duluth Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Duluth Intl.
Search Deals

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 February 4, 2026.
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

Wed 2/25

6:15 am-11:30 am

1 stop5h 15m

Duluth Intl

Sat 2/28

12:15 pm-6:01 pm

1 stop5h 46m

$198

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Tue 2/17

8:50 am-10:43 am

Nonstop1h 53m

Duluth Intl

Sat 2/21

3:19 pm-5:05 pm

Nonstop1h 46m

$209

ChicagoDuluth

MDW - DLH

MDWDLH

Chicago Midway

Tue 2/17

1:49 pm-7:32 pm

1 stop5h 43m

Duluth Intl

Sat 2/21

5:00 am-11:03 am

1 stop6h 03m

$228

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Thu 3/5

4:24 pm-6:08 pm

Nonstop1h 44m

Duluth Intl

Sun 3/8

6:43 pm-8:32 pm

Nonstop1h 49m

$239

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Wed 2/18

6:15 am-11:30 am

1 stop5h 15m

Duluth Intl

Sun 2/22

8:00 am-11:45 am

1 stop3h 45m

$258

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Tue 5/5

5:35 pm-10:46 pm

1 stop5h 11m

Duluth Intl

Tue 5/12

12:00 pm-3:19 pm

1 stop3h 19m

$262

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Sat 2/28

6:51 pm-11:55 pm

1 stop5h 04m

Duluth Intl

Mon 3/2

12:15 pm-6:01 pm

1 stop5h 46m

$273

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Wed 2/18

8:50 am-10:43 am

Nonstop1h 53m

Duluth Intl

Sun 2/22

7:50 am-9:47 am

Nonstop1h 57m

$283

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 3/21

5:29 pm-10:47 pm

1 stop5h 18m

Duluth Intl

Sat 3/28

8:04 am-11:48 am

1 stop3h 44m

$306

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sun 3/22

6:25 am-10:43 am

1 stop4h 18m

Duluth Intl

Sun 3/29

6:42 pm-10:56 pm

1 stop4h 14m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 32 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, November is the cheapest month in which you can book a flight from Illinois to Duluth (average of $179). Flying from Illinois to Duluth in March is currently the most expensive (average of $249). 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 February 4, 2026.

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 February 4, 2026.

The most flights from USIL to DLH are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 53m. 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 SkyWest Airlines (48%), United Airlines (48%) or Air New Zealand (48%) 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 $178. While the most popular route (Chicago O'Hare Intl - Duluth Intl) can be booked for $179 on average, our data indicates $388 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, November is the cheapest month in which you can book a flight from Illinois to Duluth (average of $179). Flying from Illinois to Duluth in March is currently the most expensive (average of $249). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$209Average$358FlexibilityNo cancel feeOn-time69%

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