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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $40. JetBlue flights start at $77 while deals on Southwest start at $78 one-way.

Weekly flight availability from Dallas to Illinois

The most flights from A78 to USIL are scheduled on a Sunday (90 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (69 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 Dallas to Illinois?

The most popular flight routes from Dallas to Illinois are Dallas/Fort Worth - Chicago O'Hare Intl, Dallas/Fort Worth - Chicago Midway and Dallas Love Field - Chicago Midway.

What are the cheapest flights from Dallas to Illinois?

Looking for the cheapest flight from Dallas to Illinois? While on average our users pay $873, our data indicates the cheapest price to be $134. The most popular route (Dallas/Fort Worth - Chicago O'Hare Intl), is priced around $115.

What are the most reliable airlines from Dallas to Illinois?

The top 3 most reliable airlines when flying from Dallas to Illinois are GOL (87%), ITA Airways (83%) and Turkish Airlines (82%).

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

Consider Frontier, American Airlines or United Airlines when booking your flight. These represent the most popular airlines when flying from Dallas to Illinois.

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

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

How can I find direct flights from Dallas to Illinois?

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

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

Yes. Cheapflights offers flight deals from Dallas 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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Cheapest in	January
Average price	$274

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Highest demand for flights based on searches. 16% potential increase in price ($48 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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

Prices

Airlines

How far ahead should I book a flight from Dallas to Illinois?

Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dallas to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Dallas to Illinois?

Currently, January is the cheapest month in which you can book a flight from Dallas to Illinois (average of $200). Flying from Dallas to Illinois in June is currently the most expensive (average of $352). 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 DFW to IL?

It’s optimal to fly from Dallas to Illinois at noon. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the afternoon.

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

Travelers seeking maximum savings on their Dallas to Illinois flight should consider departing on Wednesday evenings 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,Contour, andUnited Airlines from Dallas 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

7.9

Good

4,216 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Southwest

7.9

Good

4,216 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Contour

7.5

Good

43 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

United Airlines

7.4

Good

10,351 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

American Airlines

7.0

Good

12,162 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Frontier

5.5

Fair

2,542 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Related info for your journey

What are the cheapest airlines to fly from Dallas to Illinois one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $40. JetBlue flights start at $77 while deals on Southwest start at $78 one-way.
What are the most popular routes from Dallas to Illinois?
The most popular flight routes from Dallas to Illinois are Dallas/Fort Worth - Chicago O'Hare Intl, Dallas/Fort Worth - Chicago Midway and Dallas Love Field - Chicago Midway.
What are the most reliable airlines from Dallas to Illinois?
The top 3 most reliable airlines when flying from Dallas to Illinois are GOL (87%), ITA Airways (83%) and Turkish Airlines (82%).
What are the cheapest flights from Dallas to Illinois?
Looking for the cheapest flight from Dallas to Illinois? While on average our users pay $873, our data indicates the cheapest price to be $134. The most popular route (Dallas/Fort Worth - Chicago O'Hare Intl), is priced around $115.
Can I find deals for flights from Dallas to Illinois that include hotel bookings?
Yes. In addition to deals on Dallas to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dallas to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas to Illinois.
Can I find deals for business class flights from Dallas to Illinois?
Yes. Cheapflights offers flight deals from Dallas 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.
What is the cheapest month to book a flight from Dallas to Illinois?
Currently, January is the cheapest month in which you can book a flight from Dallas to Illinois (average of $200). Flying from Dallas to Illinois in June is currently the most expensive (average of $352). 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.

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Top 7 airlines flying from Dallas to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$66	Average$222	FlexibilityNo cancel fee	On-time62%
Contour	Cheapest$147	Average$259	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$157	Average$351	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$166	Average$230	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$191	Average$506	FlexibilityNo cancel fee	On-time71%
JetBlue	Cheapest$195	Average$247	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$220	Average$427	FlexibilityNo cancel fee	On-time69%

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Cheap flights from Dallas to Illinois

Find cheap flights from Dallas to Illinois with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Dallas to Illinois

Most accurate provider

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Popular in

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Cheapflights Insights

How far ahead should I book a flight from Dallas to Illinois?

Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dallas to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Dallas to Illinois?

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

It’s optimal to fly from Dallas to Illinois at noon. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the afternoon.

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

Travelers seeking maximum savings on their Dallas to Illinois flight should consider departing on Wednesday evenings 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 Dallas to Illinois

The most flights from A78 to USIL are scheduled on a Sunday (90 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (69 on average).

Reviews of airlines servicing Illinois

See what other customers who have flown with Southwest,Contour, andUnited Airlines from Dallas 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 Dallas to Illinois one-way?

What are the most popular routes from Dallas to Illinois?

What are the most reliable airlines from Dallas to Illinois?

What are the cheapest flights from Dallas to Illinois?

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

How can I find direct flights from Dallas to Illinois?

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

What is the cheapest month to book a flight from Dallas to Illinois?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dallas to Illinois

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Complete your trip

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

Search flights from Dallas to Illinois by cabin class

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

Dallas and Illinois flights

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Top 7 airlines flying from Dallas to Illinois

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