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$187+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DLH
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$198
(Delta)

Popular in

February

Cheapest in

October

Average price

$371

Good round-trip deal

$334 or less

Good one-way deal

$316 or less
From Illinois to Duluth Intl
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Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Illinois to Duluth Intl.
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Price to beat on a one-way 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/12. 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 9/268:20 pmORD - DLH
Nonstop1h 53mUnited Airlines
Sun 9/288:00 amDLH - ORD
Nonstop1h 55mUnited Airlines
Deal found 6/12$187
This Delta deal was found by Cheapflights users on 6/11. 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 8/266:10 amORD - DLH
1 stop4h 05mDelta
Sun 8/315:10 amDLH - ORD
1 stop3h 14mDelta
Deal found 6/11$198
This Delta deal was found by Cheapflights users on 6/11. 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 8/267:17 pmMDW - DLH
1 stop3h 29mDelta
Sun 8/315:10 amDLH - MDW
2 stops7h 18mDelta
Deal found 6/11$269
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/125:30 pmSTL - DLH
1 stop4h 35mUnited Airlines
Sun 9/149:45 amDLH - STL
1 stop4h 34mUnited Airlines
Deal found 6/11$359
This Delta deal was found by Cheapflights users on 6/11. 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 9/225:30 pmSTL - DLH
1 stop6h 14mDelta
Thu 9/255:10 amDLH - STL
1 stop3h 34mDelta
Deal found 6/11$360

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 June 12, 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

Tue 8/26

6:10 am-10:15 am

1 stop4h 05m

Duluth Intl

Sun 8/31

5:10 am-8:24 am

1 stop3h 14m

$198

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Thu 7/10

8:15 pm-10:00 pm

Nonstop1h 45m

Duluth Intl

Thu 7/17

6:13 pm-8:05 pm

Nonstop1h 52m

$219

ChicagoDuluth

MDW - DLH

MDWDLH

Chicago Midway

Tue 8/26

7:17 pm-10:46 pm

1 stop3h 29m

Duluth Intl

Sun 8/31

5:10 am-12:28 pm

2 stops7h 18m

$269

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Fri 9/12

5:30 pm-10:05 pm

1 stop4h 35m

Duluth Intl

Sun 9/14

9:45 am-2:19 pm

1 stop4h 34m

$359

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Mon 9/22

5:30 pm-11:44 pm

1 stop6h 14m

Duluth Intl

Thu 9/25

5:10 am-8:44 am

1 stop3h 34m

$360

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sun 7/20

5:37 pm-10:44 pm

1 stop5h 07m

$204

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Thu 7/24

12:50 pm-2:28 pm

Nonstop1h 38m

$209

ChicagoDuluth

MDW - DLH

MDWDLH

Chicago Midway

Mon 8/11

7:17 pm-10:13 am

1 stop14h 56m

$212

ChicagoDuluth

ORD - DLH

ORDDLH

Chicago O'Hare Intl

Tue 8/12

8:25 am-10:44 pm

1 stop14h 19m

$212

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sun 7/20

8:15 am-10:51 am

2 stops26h 36m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $335). Flying from Illinois to Duluth in June is currently the most expensive (average of $473). 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 June 12, 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 June 12, 2025.

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

Rainfall in Duluth by month

Plan your trip to Duluth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Duluth ranges from 0.6 - 3.6 inches per month. August is typically the wettest month, when rainfall can reach 3.6 in. February is typically the driest time to visit Duluth when rainfall is around 0.6 in.

Temperature in Duluth by month

Plan your trip to Duluth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Duluth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 12.2 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Delta and United Airlines from Illinois to Duluth to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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 Republic Airways (100%), United Airlines (86%) or SkyWest Airlines (82%) 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 $239. While the most popular route (Chicago O'Hare Intl - Duluth Intl) can be booked for $189 on average our data indicates $401 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 $335). Flying from Illinois to Duluth in June is currently the most expensive (average of $473). 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 Illinois?

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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$188Average$268FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$209Average$325FlexibilityNo cancel feeOn-time69%

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