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Duluth

$209+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DLH
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
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 December 21, 2025.

This United Airlines deal was found by Cheapflights users on 12/19. 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 12/249:05 pmORD - DLH
Nonstop1h 50mUnited Airlines
Sat 12/273:03 pmDLH - ORD
Nonstop2h 02mUnited Airlines
Deal found 12/19$384
This Delta deal was found by Cheapflights users on 12/19. 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 12/3011:48 amMDW - DLH
1 stop3h 42mDelta
Sat 1/35:00 amDLH - MDW
1 stop6h 06mDelta
Deal found 12/19$528
This Delta deal was found by Cheapflights users on 12/19. 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 12/306:35 amORD - DLH
1 stop4h 40mDelta
Sat 1/35:00 amDLH - ORD
1 stop4h 25mDelta
Deal found 12/19$588
This Delta deal was found by Cheapflights users on 12/19. 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 12/244:01 pmORD - DLH
1 stop6h 51mDelta
Sat 12/275:00 amDLH - ORD
1 stop4h 25mDelta
Deal found 12/19$743
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Sat 12/276:35 pmSTL - DLH
1 stop4h 20mUnited Airlines
Sat 1/37:50 amDLH - STL
1 stop6h 36mUnited Airlines
Deal found 12/19$757
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/309:05 pmORD - DLH
Nonstop1h 50mUnited Airlines
Sat 1/37:50 amDLH - ORD
Nonstop2h 03mUnited Airlines
Deal found 12/19$849
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/2312:45 pmORD - DLH
Nonstop1h 43mUnited Airlines
Tue 12/303:03 pmDLH - ORD
Nonstop2h 02mUnited Airlines
Deal found 12/19$904
This Delta deal was found by Cheapflights users on 12/19. 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 12/2411:48 amMDW - DLH
1 stop3h 42mDelta
Sat 12/275:00 amDLH - MDW
1 stop6h 06mDelta
Deal found 12/19$908
This Delta deal was found by Cheapflights users on 12/18. 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 12/227:00 amORD - DLH
2 stops8h 30mDelta
Wed 12/245:00 amDLH - ORD
1 stop4h 25mDelta
Deal found 12/18$1,073
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Mon 12/2212:45 pmORD - DLH
Nonstop1h 43mUnited Airlines
Wed 12/243:03 pmDLH - ORD
Nonstop2h 02mUnited Airlines
Deal found 12/19$1,137
This Delta deal was found by Cheapflights users on 12/19. 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 12/235:59 pmMDW - DLH
1 stop4h 53mDelta
Tue 12/305:00 amDLH - MDW
1 stop6h 06mDelta
Deal found 12/19$1,168
This Delta deal was found by Cheapflights users on 12/19. 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.
Sat 12/276:29 amSTL - DLH
2 stops9h 08mDelta
Sat 1/311:55 amDLH - STL
2 stops8h 46mDelta
Deal found 12/19$2,544

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 December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$194
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$370

Good round-trip deal

$379 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. 11% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 21, 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

Thu 1/8

8:09 pm-9:59 pm

Nonstop1h 50m

Duluth Intl

Mon 1/12

3:05 pm-5:10 pm

Nonstop2h 05m

$239

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Thu 1/15

12:45 pm-2:30 pm

Nonstop1h 45m

Duluth Intl

Mon 1/19

3:05 pm-5:10 pm

Nonstop2h 05m

$269

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Sat 1/3

9:05 pm-10:55 pm

Nonstop1h 50m

Duluth Intl

Wed 1/7

3:05 pm-5:10 pm

Nonstop2h 05m

$269

ChicagoDuluth

MDW - DLH

MDWDLH

Chicago Midway

Thu 1/8

9:50 am-3:44 pm

1 stop5h 54m

Duluth Intl

Mon 1/12

11:56 am-6:32 pm

1 stop6h 36m

$288

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Sun 1/18

6:15 am-11:16 am

1 stop5h 01m

Duluth Intl

Sun 1/25

5:00 am-11:47 am

1 stop6h 47m

$288

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Sat 1/31

8:09 pm-9:59 pm

Nonstop1h 50m

Duluth Intl

Tue 2/3

3:05 pm-5:10 pm

Nonstop2h 05m

$314

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Sun 1/18

12:45 pm-2:30 pm

Nonstop1h 45m

Duluth Intl

Sun 1/25

7:40 am-9:43 am

Nonstop2h 03m

$323

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Thu 1/15

6:15 am-11:16 am

1 stop5h 01m

Duluth Intl

Mon 1/19

5:00 am-1:18 pm

2 stops8h 18m

$379

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Mon 1/12

8:09 pm-9:59 pm

Nonstop1h 50m

Duluth Intl

Wed 1/14

3:05 pm-5:10 pm

Nonstop2h 05m

$417

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Tue 1/27

11:20 am-2:30 pm

1 stop27h 10m

Duluth Intl

Sat 1/31

3:05 pm-7:27 pm

1 stop4h 22m

$420

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 31 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 December 21, 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 December 21, 2025.

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).

How much does it cost to fly round-trip from Illinois to Duluth?

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 50m. 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 Emirates (73%), Copa Airlines (70%) or SkyWest Airlines (60%) 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 $218. While the most popular route (Chicago O'Hare Intl - Duluth Intl) can be booked for $194 on average, our data indicates $531 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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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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$209Average$355FlexibilityNo cancel feeOn-time69%

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