Cheap flights from St. Louis (STL) to Illinois from $65

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — ORD
Apr 3 — Apr 101

How far in advance should I book a flight from St. Louis to Illinois?

Find a great deal and save up to 98% by booking at least 48 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Illinois within the next two weeks, with the cheapest ticket starting at $270.

What is the cheapest month to fly from St. Louis to Illinois?

February can be a great time to fly to Illinois from St. Louis with a flight ticket averaging about $271. Cheapflights users have found deals in the month of February for as cheap as $167. The most expensive prices can be found in the month of May.

When is the cheapest time to fly from St. Louis to Illinois (STL - IL)?

When flying from St. Louis 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.

Cheap American Airlines flights from St. Louis to Illinois

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,228,805 searches. Data last updated March 29, 2024.
Take a peek at the cheapest American Airlines flights we've detected traveling from St. Louis to Illinois. Come back soon if you're not finding the exact deal you're looking for.
Sat 4/276:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Sat 4/2710:10 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/29$131
Sat 4/275:25 pmSTL - ORD
Nonstop1h 15mAmerican Airlines
Sat 5/410:10 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$137
Wed 4/246:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Wed 5/13:09 pmORD - STL
Nonstop1h 18mAmerican Airlines
Deal found 3/28$138
Sat 4/277:10 amSTL - ORD
1 stop5h 14mAmerican Airlines
Sat 4/273:08 pmORD - STL
Nonstop1h 14mAmerican Airlines
Deal found 3/29$139
Sat 4/271:11 pmSTL - ORD
1 stop5h 06mAmerican Airlines
Sat 5/48:15 amORD - STL
Nonstop1h 24mAmerican Airlines
Deal found 3/28$145
Wed 4/247:10 amSTL - ORD
1 stop5h 14mAmerican Airlines
Wed 5/110:08 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$146
Sat 4/205:25 pmSTL - ORD
Nonstop1h 15mAmerican Airlines
Tue 4/236:35 amORD - STL
1 stop5h 55mAmerican Airlines
Deal found 3/29$147
Sat 4/274:42 pmSTL - ORD
1 stop7h 15mAmerican Airlines
Sat 5/46:35 amORD - STL
1 stop5h 55mAmerican Airlines
Deal found 3/28$153
Wed 4/245:15 amSTL - ORD
1 stop5h 00mAmerican Airlines
Wed 5/15:30 amORD - STL
1 stop4h 43mAmerican Airlines
Deal found 3/28$154

Cheap Delta flights from St. Louis to Illinois

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,228,805 searches. Data last updated March 29, 2024.
Some of the best deals we've found on Delta flights traveling from St. Louis to Illinois. Check back soon if you're not seeing flights that suit your needs.
Sat 4/2711:45 amSTL - MDW
1 stop4h 34mDelta
Sat 5/46:30 amMDW - STL
1 stop4h 29mDelta
Deal found 3/28$156
Sat 4/276:13 amSTL - ORD
1 stop4h 12mDelta
Mon 4/295:57 pmORD - STL
1 stop5h 49mDelta
Deal found 3/28$157
Sat 4/201:01 pmSTL - ORD
1 stop6h 30mDelta
Wed 4/246:20 amORD - STL
1 stop4h 31mDelta
Deal found 3/28$158
Sat 4/276:13 amSTL - ORD
2 stops6h 22mDelta
Sat 5/45:25 pmORD - STL
1 stop3h 58mDelta
Deal found 3/28$161
Sat 4/276:13 amSTL - ORD
2 stops6h 22mDelta
Mon 4/295:57 pmORD - STL
1 stop5h 49mDelta
Deal found 3/28$162
Sat 4/206:00 amSTL - MDW
2 stops10h 19mDelta
Wed 4/249:30 amMDW - STL
1 stop3h 41mDelta
Deal found 3/27$163
Sat 4/276:00 amSTL - MDW
2 stops10h 19mDelta
Mon 4/291:25 pmMDW - STL
2 stops10h 21mDelta
Deal found 3/28$167
Sun 5/56:13 amSTL - MDW
1 stop4h 23mDelta
Wed 5/89:32 amMDW - STL
1 stop3h 36mDelta
Deal found 3/27$177
Wed 4/246:04 amSTL - ORD
1 stop5h 18mDelta
Thu 4/257:15 amORD - STL
1 stop7h 31mDelta
Deal found 3/28$178

Cheap St. Louis to Illinois flights in March & April 2024

Find cheap flight options from St. Louis to Illinois specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,228,805 searches. Prices were last updated on March 29, 2024.
These are some of the most attractive deals on flights from St. Louis to Illinois in 2024. Check back regularly for other flight deals.
Mon 4/299:35 amSTL - UIN
Nonstop0h 50mSouthern / Mokulele
Tue 4/306:10 amUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$88
Sat 4/69:35 amSTL - UIN
Nonstop0h 50mSouthern / Mokulele
Wed 4/1012:10 pmUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$129
Sat 4/275:25 pmSTL - ORD
Nonstop1h 15mAmerican Airlines
Sat 5/410:10 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$137
Wed 4/246:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Wed 5/13:09 pmORD - STL
Nonstop1h 18mAmerican Airlines
Deal found 3/28$138
Sat 4/271:11 pmSTL - ORD
1 stop5h 06mAmerican Airlines
Sat 5/48:15 amORD - STL
Nonstop1h 24mAmerican Airlines
Deal found 3/28$145
Wed 4/247:10 amSTL - ORD
1 stop5h 14mAmerican Airlines
Wed 5/110:08 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$146
Sat 4/205:25 pmSTL - ORD
Nonstop1h 15mAmerican Airlines
Sun 4/285:30 amORD - STL
1 stop4h 43mAmerican Airlines
Deal found 3/28$147
Sat 4/274:42 pmSTL - ORD
1 stop7h 15mAmerican Airlines
Sat 5/46:35 amORD - STL
1 stop5h 55mAmerican Airlines
Deal found 3/28$153
Wed 4/245:15 amSTL - ORD
1 stop5h 00mAmerican Airlines
Wed 5/15:30 amORD - STL
1 stop4h 43mAmerican Airlines
Deal found 3/28$154

St. Louis to Illinois 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Illinois in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,228,805 searches. Data last updated March 29, 2024.
These are some of the most attractive deals on flights from St. Louis to Illinois in 2024. Check back regularly for other flight deals.
Mon 4/299:35 amSTL - UIN
Nonstop0h 50mSouthern / Mokulele
Tue 4/306:10 amUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$88
Tue 7/308:55 pmSTL - UIN
Nonstop0h 50mSouthern / Mokulele
Thu 8/17:30 pmUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$129
Sat 4/275:25 pmSTL - ORD
Nonstop1h 15mAmerican Airlines
Sat 5/410:10 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$137
Wed 4/246:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Wed 5/13:09 pmORD - STL
Nonstop1h 18mAmerican Airlines
Deal found 3/28$138
Thu 5/165:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Sun 5/199:50 amORD - STL
Nonstop1h 14mAmerican Airlines
Deal found 3/28$139
Sat 4/271:11 pmSTL - ORD
1 stop5h 06mAmerican Airlines
Sat 5/48:15 amORD - STL
Nonstop1h 24mAmerican Airlines
Deal found 3/28$145
Wed 4/247:10 amSTL - ORD
1 stop5h 14mAmerican Airlines
Wed 5/110:08 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$146
Sat 4/205:25 pmSTL - ORD
Nonstop1h 15mAmerican Airlines
Sun 4/285:30 amORD - STL
1 stop4h 43mAmerican Airlines
Deal found 3/28$147
Sat 4/274:42 pmSTL - ORD
1 stop7h 15mAmerican Airlines
Sat 5/46:35 amORD - STL
1 stop5h 55mAmerican Airlines
Deal found 3/28$153

Non-stop flights to Illinois from St. Louis

Discover non-stop flight options from St. Louis to Illinois. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,228,805 searches. Data last updated March 29, 2024.
For a shorter flight, select one of these non-stop flights from St. Louis to Illinois. Users can also choose from other St. Louis to Illinois flights by using the search form above.
Mon 4/299:35 amSTL - UIN
Nonstop0h 50mSouthern / Mokulele
Tue 4/306:10 amUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$88
Tue 7/308:55 pmSTL - UIN
Nonstop0h 50mSouthern / Mokulele
Thu 8/17:30 pmUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$129
Sat 4/275:25 pmSTL - ORD
Nonstop1h 15mAmerican Airlines
Sat 5/410:10 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$137
Wed 4/246:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Wed 5/13:09 pmORD - STL
Nonstop1h 18mAmerican Airlines
Deal found 3/28$138
Thu 5/165:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Sun 5/199:50 amORD - STL
Nonstop1h 14mAmerican Airlines
Deal found 3/28$139
Wed 4/246:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Thu 4/2510:08 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$159
Mon 4/226:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Mon 4/2210:08 amORD - STL
Nonstop1h 23mAmerican Airlines
Deal found 3/28$173
Fri 4/196:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Sat 4/207:14 pmORD - STL
Nonstop1h 15mAmerican Airlines
Deal found 3/28$189
Wed 5/295:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Wed 7/174:09 pmORD - STL
Nonstop1h 13mAmerican Airlines
Deal found 3/28$195

St. Louis to Illinois flights leaving soon

Find last-minute flight options from St. Louis to Illinois for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,228,805 searches. Data last updated March 29, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to Illinois. To prevent any unwanted surprises, users should verify their flight info before booking.
Sat 4/69:35 amSTL - UIN
Nonstop0h 50mSouthern / Mokulele
Wed 4/1012:10 pmUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$129
Fri 4/53:55 pmSTL - ORD
1 stop3h 15mSouthern / Mokulele
Fri 4/125:15 pmORD - STL
1 stop3h 05mSouthern / Mokulele
Deal found 3/27$180
Fri 3/298:55 pmSTL - ORD
1 stop10h 30mSouthern / Mokulele
Sun 3/3112:30 pmORD - STL
1 stop7h 50mSouthern / Mokulele
Deal found 3/28$182
Mon 4/13:55 pmSTL - ORD
1 stop3h 15mSouthern / Mokulele
Tue 4/212:30 pmORD - STL
1 stop7h 50mSouthern / Mokulele
Deal found 3/28$186
Tue 4/29:35 amSTL - ORD
1 stop21h 50mSouthern / Mokulele
Wed 4/35:15 pmORD - STL
1 stop19h 45mSouthern / Mokulele
Deal found 3/28$187
Sat 3/309:35 amSTL - ORD
1 stop7h 05mSouthern / Mokulele
Sun 3/3112:30 pmORD - STL
1 stop18h 30mSouthern / Mokulele
Deal found 3/27$190
Fri 3/299:35 amSTL - ORD
1 stop7h 05mSouthern / Mokulele
Fri 4/55:15 pmORD - STL
1 stop3h 05mSouthern / Mokulele
Deal found 3/28$193
Sat 3/309:35 amSTL - ORD
1 stop7h 05mSouthern / Mokulele
Sat 4/205:15 pmORD - STL
1 stop13h 45mSouthern / Mokulele
Deal found 3/28$196
Sat 4/612:00 pmSTL - UIN
2 stops33h 30mSouthern / Mokulele
Wed 4/106:10 amUIN - STL
Nonstop0h 50mSouthern / Mokulele
Deal found 3/28$199

One-way flights to Illinois from St. Louis

Search for one-way flight options from St. Louis to Illinois. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,228,805 searches. Data last updated March 29, 2024.
Some of the best available deals we've found on one-way flights from St. Louis to Illinois. Users in need of a round-trip flight from St. Louis to Illinois instead should update the search form at the top of page.
Tue 4/234:50 pmSTL - ORD
1 stop8h 06mFrontier
Deal found 3/28$65
Wed 5/87:45 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 3/28$69
Tue 5/74:50 pmSTL - MDW
1 stop18h 48mFrontier
Deal found 3/28$70
Tue 4/236:05 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 3/28$70
Tue 4/162:35 pmSTL - ORD
1 stop10h 24mMultiple Airlines
Deal found 3/28$72
Wed 5/85:04 amSTL - ORD
1 stop5h 22mAmerican Airlines
Deal found 3/28$77
Wed 5/83:27 pmSTL - MDW
1 stop6h 34mDelta
Deal found 3/28$78
Tue 5/146:30 amSTL - ORD
1 stop6h 12mDelta
Deal found 3/28$78
Tue 4/233:06 pmSTL - MDW
1 stop6h 26mDelta
Deal found 3/28$79

Find flights from St. Louis to Illinois within your budget

Customize your flight search to find flights from St. Louis 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 3,228,805 searches. Data last updated March 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$88 - $233

Route

Depart

Return

Price

Lambert-St LouisQuincy Regional

STL - UIN

STLUIN

Lambert-St Louis

Mon 4/29

Nonstop0h 50m

Quincy Regional

Tue 4/30

Nonstop0h 50m

$88

Lambert-St LouisQuincy Regional

STL - UIN

STLUIN

Lambert-St Louis

Tue 7/30

Nonstop0h 50m

Quincy Regional

Thu 8/1

Nonstop0h 50m

$129

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Sat 4/27

Nonstop1h 19m

Chicago O'Hare Intl

Sat 4/27

Nonstop1h 23m

$131

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Sat 4/27

Nonstop1h 15m

Chicago O'Hare Intl

Sat 5/4

Nonstop1h 23m

$137

Lambert-St LouisChicago Midway

STL - MDW

STLMDW

Lambert-St Louis

Sat 4/27

1 stop4h 34m

Chicago Midway

Sat 5/4

1 stop4h 29m

$156

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Sat 4/20

2 stops9h 26m

Chicago O'Hare Intl

Sun 4/28

1 stop3h 05m

$189

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Sat 4/27

2 stops9h 26m

Chicago O'Hare Intl

Sat 5/4

2 stops20h 40m

$204

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Sun 5/26

Nonstop1h 24m

Chicago O'Hare Intl

Wed 5/29

Nonstop1h 24m

$215

Lambert-St LouisChicago Midway

STL - MDW

STLMDW

Lambert-St Louis

Thu 4/18

1 stop7h 57m

Chicago Midway

Sun 4/21

1 stop11h 20m

$233

Flights are sorted by cheapest first

Deals found on 3/28

No data available for this route at this time. Please check back soon.

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 March 29, 2024.
Peruse reviews from past customers who have flown with American Airlines, Delta and Spirit Airlines from St. Louis to Illinois to help guide your decision. 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
8.2
Very good
6,327 reviews

Boarding

8.3

Entertainment

7.9

Food

7.4

Overall

8.2

Comfort

8.1

Crew

8.8

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

Southwest
8.2
Very good
6,327 reviews
Southwest
8.2
Very good
6,327 reviews

Boarding

8.3

Entertainment

7.9

Food

7.4

Overall

8.2

Comfort

8.1

Crew

8.8

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

8.1
Very good
11,402 reviews
Southwest
8.2
Very good
6,327 reviews

Boarding

8.3

Entertainment

7.9

Food

7.4

Overall

8.2

Comfort

8.1

Crew

8.8

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

7.4
Good
11,470 reviews
Southwest
8.2
Very good
6,327 reviews

Boarding

8.3

Entertainment

7.9

Food

7.4

Overall

8.2

Comfort

8.1

Crew

8.8

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

7.3
Good
15,181 reviews
Southwest
8.2
Very good
6,327 reviews

Boarding

8.3

Entertainment

7.9

Food

7.4

Overall

8.2

Comfort

8.1

Crew

8.8

Reviews

1 / 10

No tray tables for food or drink not convenient nor comfortable

Related info for your journey

Find useful and relevant information for your journey from St. Louis 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 St. Louis to Illinois?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to Illinois from St. Louis.

  • Can I find flights from St. Louis to Illinois for under $100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Illinois for under $100. The cheapest flight booked recently is on Southern / Mokulele for just $88, but on average you can expect to pay $146.

  • Are there nonstop flights from St. Louis to Illinois for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Illinois under $100. A good price for a nonstop flight from St. Louis to Illinois is less than $205.

  • Are there last-minute flights available from St. Louis to Illinois for under $200?

    There are currently 20+ open flights from St. Louis to Illinois within the next 7 days for less than $200.

  • What days are nonstop flights available from St. Louis to Illinois?

    You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Wednesday, Friday, Saturday.

  • How many flights depart from St. Louis to Illinois on average per day?

    On average 74 flights depart from St. Louis to Illinois per day.
    Early Morning (Midnight to 6am) - 5% of flight departures
    Morning (6am - Noon) - 46% of flight departures
    Afternoon (Noon - 6pm) - 42% of flight departures
    Evening (6pm - Midnight) - 7% of flight departures

  • How long is the flight from St. Louis to Illinois?

    A quick flight from St. Louis to Illinois can take about 50m. Southern / Mokulele provides one of the quickest options available for as low as $88. St. Louis and Illinois are separated by a distance of 259 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from St. Louis to Illinois one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $65. Users have also found prices from $69 and $78 on American Airlines and Delta, respectively.

  • What are the most popular routes from St. Louis to Illinois?

  • What are the most popular airlines that fly from St. Louis to Illinois?

  • What are the most reliable airlines from St. Louis to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Illinois on time: SkyWest Airlines (89%), Emirates (89%), Copa Airlines (89%).

  • What are the cheapest flights from St. Louis to Illinois?

    The cheapest flight price from St. Louis to Illinois is $88. On average you can expect to pay $1,095. The most popular route, (Lambert-St Louis - Chicago O'Hare Intl), can usually be booked for $149.

  • What does STL to ORD mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Chicago O'Hare Intl Airport flight would often be abbreviated as a STL to ORD flight. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Champaign University-Willard Airport (CMI).

  • Can I find deals for flights from St. Louis to Illinois that include extra baggage allowance?

    The amount of baggage you can bring depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Illinois with specific airlines?

    Yes, Cheapflights allows you to browse and filter flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Illinois that include hotel bookings?

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

  • How can I find direct flights from St. Louis to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to see available direct flights.

  • Can I find deals for business class flights from St. Louis to Illinois?

    Yes. Cheapflights offers flight deals from St. Louis 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.

  • Can I find deals for flights from St. Louis to Illinois that allow pets onboard?

    Many airlines do offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • How recently were the St. Louis to Illinois flight deals updated?

    The St. Louis to Illinois flight deals you see on this page were last updated on 3/28.

See more FAQs

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Alternative routes for St. Louis to Illinois
See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from St. Louis to Illinois

Discover the top 4 airlines that operate flights from St. Louis 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 3,228,805 searches. Data last updated March 29, 2024.
AirlineCheapestAverageFlexibilityOn-time
Southern / MokuleleCheapest$99Average$163FlexibilityNo cancel feeOn-timeN/A
Search Southern / Mokulele flights
United AirlinesCheapest$130Average$292FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$169Average$280FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$238Average$300FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Search flights from St. Louis to Illinois by cabin class

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

Hourly flight availability from St. Louis to Illinois

Find hourly flight availability from St. Louis 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 March 29, 2024.
11%of flight departuresEarly morningMidnight to 6 am
33%of flight departuresMorning6 am to noon
55%of flight departuresAfternoonNoon to 6 pm
1%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Illinois?

Cheapflights helps you search for flights from St. Louis to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Illinois?

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis to Illinois for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from St. Louis to Illinois with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis to Illinois flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from St. Louis to Illinois become cheaper?

Not ready to book yet? You can track prices for flights from St. Louis to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

Can I find deals on last-minute flights from St. Louis to Illinois?

Yes, you can often find last-minute deals on St. Louis to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

How can I compare prices from different travel booking sites for flights from St. Louis to Illinois?

Cheapflights aggregates prices from various travel booking sites. This allows you to compare prices and choose the best deal.

Can I find deals for flights from St. Louis to Illinois that offer flexible cancellation policies?

Cancellation policies vary by airline and fare type. After entering your flight details, you can view the cancellation policies for each deal in the search results. Some deals may offer flexibility in terms of cancellation and changes.

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