What are the cheapest airlines to fly from Durham to Illinois one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $40. Users have also found prices from $80 and $88 on JetBlue and Delta, respectively.

Weekly flight availability from Durham to Illinois

The most flights from DU8 to USIL are scheduled on a Sunday (36 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 on average).

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

What are the most popular routes from Durham to Illinois?

The most popular flight routes from Durham to Illinois are Raleigh-Durham - Chicago O'Hare Intl, Raleigh-Durham - Chicago Midway and Raleigh-Durham - Lambert-St Louis.

What are the cheapest flights from Durham to Illinois?

Looking at all options, your cheapest flight can be booked for $121. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $183 on average, our data indicates $974 when flying from Durham to Illinois.

What are the most reliable airlines from Durham to Illinois?

No one likes to see their flight delayed. When booking a flight from Durham to Illinois consider choosing SkyWest Airlines (96%), Alaska Airlines (91%) or Porter Airlines (88%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Durham to Illinois?

United Airlines, American Airlines and Southwest are the most popular airlines when flying from Durham to Illinois.

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

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

How can I find direct flights from Durham to Illinois?

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

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

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

Find Cheap Flights from Durham to Illinois

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Find flight deals from Durham to Illinois

Most accurate provider	FlightHub 3 stars
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Popular in	July
Cheapest in	December
Average price	$337

Provider with most accurate pricing for Raleigh-Durham-Chicago (CHI) flight deals.

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Provider most trusted by Cheapflights users for Raleigh-Durham-Chicago (CHI) flights.

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Highest demand for flights based on searches. 9% potential increase in price ($33 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in November 2026

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

Prices

Airlines

What is the cheapest time of day to fly from DU8 to IL?

A simple way to save on the total cost of your ticket is to fly from Durham to Illinois in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Durham to Illinois?

Travelers seeking maximum savings on their Durham to Illinois flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Illinois

See what other customers who have flown with Southwest,United Airlines, andJetBlue from Durham to Illinois 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.

Southwest

8.0

Very good

4,219 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Southwest

8.0

Very good

4,219 reviews

Southwest

8.0

Very good

4,219 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

United Airlines

7.3

Good

10,471 reviews

Southwest

8.0

Very good

4,219 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

JetBlue

7.1

Good

3,067 reviews

Southwest

8.0

Very good

4,219 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

American Airlines

7.0

Good

12,224 reviews

Southwest

8.0

Very good

4,219 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Frontier

5.5

Fair

2,506 reviews

Southwest

8.0

Very good

4,219 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Related info for your journey

What are the cheapest airlines to fly from Durham to Illinois one-way?
For one-way options, check prices for Frontier. According to our data, you can fly for as low as $40. Users have also found prices from $80 and $88 on JetBlue and Delta, respectively.
What are the most popular routes from Durham to Illinois?
The most popular flight routes from Durham to Illinois are Raleigh-Durham - Chicago O'Hare Intl, Raleigh-Durham - Chicago Midway and Raleigh-Durham - Lambert-St Louis.
What are the most reliable airlines from Durham to Illinois?
No one likes to see their flight delayed. When booking a flight from Durham to Illinois consider choosing SkyWest Airlines (96%), Alaska Airlines (91%) or Porter Airlines (88%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Durham to Illinois?
Looking at all options, your cheapest flight can be booked for $121. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $183 on average, our data indicates $974 when flying from Durham to Illinois.
Can I find deals for flights from Durham to Illinois that include hotel bookings?
Yes. In addition to deals on Durham to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Durham to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Durham to Illinois.
Can I find deals for business class flights from Durham to Illinois?
Yes. Cheapflights offers flight deals from Durham to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 6 airlines flying from Durham to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$58	Average$238	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$88	Average$351	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$160	Average$327	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$208	Average$362	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$209	Average$432	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$253	Average$379	FlexibilityNo cancel fee	On-time63%

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Cheap flights from Durham, NC to Illinois

Find cheap flights from Durham to Illinois with Cheapflights

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Find flight deals from Durham to Illinois

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Cheapflights Insights

What is the cheapest time of day to fly from DU8 to IL?

A simple way to save on the total cost of your ticket is to fly from Durham to Illinois in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Durham to Illinois?

Travelers seeking maximum savings on their Durham to Illinois flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Durham to Illinois

The most flights from DU8 to USIL are scheduled on a Sunday (36 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 on average).

Reviews of airlines servicing Illinois

See what other customers who have flown with Southwest,United Airlines, andJetBlue from Durham to Illinois 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.

Related info for your journey

What are the cheapest airlines to fly from Durham to Illinois one-way?

What are the most popular routes from Durham to Illinois?

What are the most reliable airlines from Durham to Illinois?

What are the cheapest flights from Durham to Illinois?

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

How can I find direct flights from Durham to Illinois?

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

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 Durham to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Durham to Illinois by cabin class

Find flights from Durham to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Durham and Illinois flights

Browse other Durham and Illinois flight options. Last updated on November 10, 2026.

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Durham to Illinois flights

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Top 6 airlines flying from Durham to Illinois

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