HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Duluth

$143+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DLH
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Duluth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 31, 2025.

Round-trip from

$214
(United Airlines)

One-way from

$143
(Delta)

Popular in

June

Cheapest in

October

Average price

$373

Good round-trip deal

$328 or less

Good one-way deal

$333 or less
From Illinois to Duluth Intl
Search Deals
One-way flight from Illinois to Duluth Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Duluth Intl.
Search Deals
Price to beat on a one-way flight from Illinois to Duluth Intl.
Search Deals

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 July 31, 2025.

This United Airlines deal was found by Cheapflights users on 7/30. 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 9/198:12 pmORD - DLH
Nonstop1h 53mUnited Airlines
Sun 9/218:00 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 7/30$214
This Delta deal was found by Cheapflights users on 7/30. 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 8/196:10 amORD - DLH
1 stop4h 05mDelta
Sat 8/235:10 amDLH - ORD
1 stop3h 14mDelta
Deal found 7/30$228
This Delta deal was found by Cheapflights users on 7/30. 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.
Sun 8/317:17 pmMDW - DLH
1 stop3h 29mDelta
Sat 9/65:10 amDLH - MDW
2 stops7h 18mDelta
Deal found 7/30$294
This Delta deal was found by Cheapflights users on 7/31. 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 8/155:30 pmSTL - DLH
1 stop5h 14mDelta
Tue 8/195:10 amDLH - STL
1 stop3h 26mDelta
Deal found 7/31$453
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/197:04 pmSTL - DLH
1 stop27h 01mUnited Airlines
Mon 9/2211:20 amDLH - STL
1 stop7h 03mUnited Airlines
Deal found 7/31$498

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 July 31, 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

Fri 9/19

8:12 pm-10:05 pm

Nonstop1h 53m

Duluth Intl

Sun 9/21

8:00 am-9:55 am

Nonstop1h 55m

$214

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Tue 8/19

6:10 am-10:15 am

1 stop4h 05m

Duluth Intl

Sat 8/23

5:10 am-8:24 am

1 stop3h 14m

$228

ChicagoDuluth

MDW - DLH

MDWDLH

Chicago Midway

Sun 8/31

7:17 pm-10:46 pm

1 stop3h 29m

Duluth Intl

Sat 9/6

5:10 am-12:28 pm

2 stops7h 18m

$294

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Fri 8/15

5:30 pm-10:44 pm

1 stop5h 14m

Duluth Intl

Tue 8/19

5:10 am-8:36 am

1 stop3h 26m

$453

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Fri 9/19

7:04 pm-10:05 pm

1 stop27h 01m

Duluth Intl

Mon 9/22

11:20 am-6:23 pm

1 stop7h 03m

$498

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Wed 10/1

6:15 am-10:07 am

1 stop3h 52m

$143

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Wed 10/1

8:58 am-10:45 am

Nonstop1h 47m

$209

ChicagoDuluth

MDW - DLH

MDWDLH

Chicago Midway

Tue 8/12

1:43 pm-7:20 pm

1 stop5h 37m

$363

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sun 8/3

11:18 am-5:23 pm

1 stop6h 05m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 $336). Flying from Illinois to Duluth in June is currently the most expensive (average of $476). 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 July 31, 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 July 31, 2025.

The most flights from USIL to DLH are scheduled on a Wednesday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Duluth

Get insights into the airlines that provide service to Duluth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Duluth. Reviews last updated July 31, 2025.
See what other customers who have flown with Delta and United Airlines from Illinois to Duluth have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Mark,Jun 2024

SGF - ATL

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Mark,Jun 2024

SGF - ATL

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Mark,Jun 2024

SGF - ATL

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

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.

  • 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 Air New Zealand (75%), Republic Airways (75%) or United Airlines (63%) 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 $238. While the most popular route (Chicago O'Hare Intl - Duluth Intl) can be booked for $182 on average our data indicates $396 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 $336). Flying from Illinois to Duluth in June is currently the most expensive (average of $476). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Duluth

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Minneapolis flights
Dulles Intl to Minneapolis flights
LaGuardia to Minneapolis flights
Reagan-National to Minneapolis flights
Newark to Minneapolis flights
Baltimore to Minneapolis flights
Seattle to Minneapolis flights
John F Kennedy Intl to Minneapolis flights
Boston to Minneapolis flights
San Francisco to Minneapolis flights
Los Angeles to Minneapolis flights
Sky Harbor Intl to Minneapolis flights
Denver to Minneapolis flights
Tampa to Minneapolis flights
Philadelphia to Minneapolis flights
Atlanta to Minneapolis flights
O'Hare Intl to Minneapolis flights
Santa Ana to Minneapolis flights
George Bush Intcntl to Minneapolis flights
Orlando to Minneapolis flights
Hobby to Minneapolis flights
Pittsburgh to Minneapolis flights
Ontario to Minneapolis flights
San Diego to Minneapolis flights
Midway to Minneapolis flights
Portland to Minneapolis flights
Miami to Minneapolis flights
Cincinnati to Minneapolis flights
Fort Lauderdale to Minneapolis flights
St. Louis to Minneapolis flights
Charlotte to Minneapolis flights
Austin to Minneapolis flights
Salt Lake City to Minneapolis flights
Raleigh to Minneapolis flights
Detroit to Minneapolis flights
Honolulu to Minneapolis flights
Hartford to Minneapolis flights
Grand Rapids to Minneapolis flights
Nashville to Minneapolis flights
Milwaukee to Minneapolis flights
Indianapolis to Minneapolis flights
Kansas City to Minneapolis flights
Columbus to Minneapolis flights
San Antonio to Minneapolis flights
Cleveland to Minneapolis flights
San Jose to Minneapolis flights
Sacramento to Minneapolis flights
Fort Myers to Minneapolis flights
New Orleans to Minneapolis flights
Denver to Fargo flights

Top 2 airlines flying from Illinois to Duluth

Discover the top 2 airlines 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$188Average$268FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$229Average$343FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.