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$175+ Cheap flights from Rochester, MN (RST) to Illinois

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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
RST — ORD
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Rochester to Illinois

Keep the following information in mind while searching for Rochester to Illinois flight deals. Data was last updated July 29, 2025.

Round-trip from

$246
(Delta)

One-way from

$175
(Delta)

Popular in

June

Cheapest in

October

Average price

$426

Good round-trip deal

$347 or less

Good one-way deal

$233 or less
From Rochester to Illinois
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One-way flight from Rochester to Illinois
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Highest demand for flights based on searches. 9% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Rochester to Illinois.
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Price to beat on a one-way flight from Rochester to Illinois.
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Find flight deals from Rochester to Illinois

Cheapest flights from Rochester to Illinois
Explore the most affordable flight options available from Rochester to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Delta deal was found by Cheapflights users on 7/27. 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 9/246:14 pmRST - STL
1 stop4h 55mDelta
Sat 9/276:00 amSTL - RST
1 stop4h 45mDelta
Deal found 7/27$246
This Delta deal was found by Cheapflights users on 7/27. 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 8/3012:50 pmRST - ORD
1 stop8h 45mDelta
Wed 9/38:25 amORD - RST
1 stop15h 04mDelta
Deal found 7/27$285
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amRST - STL
1 stop3h 26mAmerican Airlines
Sun 10/56:05 amSTL - RST
1 stop5h 14mAmerican Airlines
Deal found 7/27$296
This Delta deal was found by Cheapflights users on 7/27. 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 8/3012:50 pmRST - MDW
1 stop4h 47mDelta
Wed 9/31:43 pmMDW - RST
1 stop21h 10mDelta
Deal found 7/27$307
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3012:48 pmRST - ORD
Nonstop1h 26mAmerican Airlines
Sun 8/314:46 pmORD - RST
Nonstop1h 25mAmerican Airlines
Deal found 7/27$309
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/106:25 pmRST - MLI
1 stop5h 13mAmerican Airlines
Mon 8/116:33 pmMLI - RST
1 stop5h 14mAmerican Airlines
Deal found 7/28$808

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rochester to Illinois 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 29, 2025.
Use the filters below to find and compare flights from Rochester to Illinois that are best for you.

Fly from

Rochester

Fly to

Illinois

Route

Depart

Return

Price

RochesterSt. Louis

RST - STL

RSTSTL

Rochester

Wed 9/24

6:14 pm-11:09 pm

1 stop4h 55m

Lambert-St Louis

Sat 9/27

6:00 am-10:45 am

1 stop4h 45m

$246

RochesterChicago

RST - ORD

RSTORD

Rochester

Sat 8/30

12:50 pm-9:35 pm

1 stop8h 45m

Chicago O'Hare Intl

Wed 9/3

8:25 am-11:29 pm

1 stop15h 04m

$285

RochesterSt. Louis

RST - STL

RSTSTL

Rochester

Fri 10/3

6:00 am-9:26 am

1 stop3h 26m

Lambert-St Louis

Sun 10/5

6:05 am-11:19 am

1 stop5h 14m

$296

RochesterChicago

RST - MDW

RSTMDW

Rochester

Sat 8/30

12:50 pm-5:37 pm

1 stop4h 47m

Chicago Midway

Wed 9/3

1:43 pm-10:53 am

1 stop21h 10m

$307

RochesterChicago

RST - ORD

RSTORD

Rochester

Sat 8/30

12:48 pm-2:14 pm

Nonstop1h 26m

Chicago O'Hare Intl

Sun 8/31

4:46 pm-6:11 pm

Nonstop1h 25m

$309

RochesterMoline

RST - MLI

RSTMLI

Rochester

Sun 8/10

6:25 pm-11:38 pm

1 stop5h 13m

Moline Quad-City

Mon 8/11

6:33 pm-11:47 pm

1 stop5h 14m

$808

RochesterChicago

RST - ORD

RSTORD

Rochester

Sat 8/30

12:50 pm-10:20 am

2 stops21h 30m

$175

RochesterSt. Louis

RST - STL

RSTSTL

Rochester

Mon 8/11

6:25 pm-11:51 pm

1 stop5h 26m

$210

RochesterChicago

RST - ORD

RSTORD

Rochester

Tue 8/26

6:05 am-7:30 am

Nonstop1h 25m

$345

RochesterChicago

RST - MDW

RSTMDW

Rochester

Tue 8/5

11:27 am-5:39 pm

1 stop6h 12m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Rochester to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Rochester 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 Rochester to Illinois

What is the cheapest month to book a flight from Rochester, Minnesota to Illinois?

Currently, August is the cheapest month in which you can book a flight from Rochester, Minnesota to Illinois (average of $245). Flying from Rochester, Minnesota to Illinois in March is currently the most expensive (average of $321). 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 RST to IL?

Find hourly flight availability from Rochester to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

When flying from Rochester, Minnesota to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated July 29, 2025.
Read through reviews of airlines operating flights from Rochester to Illinois, such as Delta and American Airlines. 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
7,979 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Rochester to Illinois. 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 from for flights from Rochester to Illinois?

    Rochester (RST), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Rochester to Illinois.

  • What are the most popular routes from Rochester, Minnesota to Illinois?

    The most popular route from Rochester, Minnesota to Illinois is Rochester - Chicago O'Hare Intl. You may also consider Rochester - Chicago Midway or Rochester - Lambert-St Louis.

  • What are the most reliable airlines from Rochester, Minnesota to Illinois?

    The top 3 most reliable airlines when flying from Rochester, Minnesota to Illinois are SkyWest Airlines (66%), American Airlines (66%) and Qatar Airways (59%).

  • What are the cheapest flights from Rochester, Minnesota to Illinois?

    On average you can expect to pay $2,017 for a flight from Rochester, Minnesota to Illinois. The cheapest flight overall is $159 while the most popular route, (Rochester - Chicago O'Hare Intl) is currently priced at $328.

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

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

  • How can I find direct flights from Rochester to Illinois?

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

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

    Yes. Cheapflights offers flight deals from Rochester 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 Rochester, Minnesota to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Rochester, Minnesota to Illinois (average of $245). Flying from Rochester, Minnesota to Illinois in March is currently the most expensive (average of $321). 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 2 airlines flying from Rochester to Illinois

Discover the top 2 airlines that operate flights from Rochester to Illinois. 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$229Average$354FlexibilityNo cancel feeOn-time71%
DeltaCheapest$258Average$473FlexibilityNo cancel feeOn-timeN/A

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