Cheap flights from St. Louis (STL) to O'Hare Intl (ORD)

STL — ORD
Aug 24 — Aug 311

How to find the cheapest flight from St. Louis (STL) to O'Hare Intl (ORD)

All the information you need to plan the best STL to ORD flight in 2022: compare St. Louis to O'Hare Intl flight prices with the expected peak season, weather and rainfall in O'Hare Intl.

STL - ORD

Price

$175 - $365

ORD

Temperature

23 - 73.4 °F

ORD

Rainfall

1.7 - 4.9 inches

Popular inJuneHigh demand for flights, 35% potential price rise
Cheapest inNovemberBest time to find cheap flights, 26% potential price drop
Round-trip from$175From Lambert-St Louis to Chicago O'Hare Intl
One-way from$87One-way flight from Lambert-St Louis to Chicago O'Hare Intl

How far in advance should I book a flight from St. Louis to Chicago O'Hare Intl Airport?

Users have found that booking a flight from St. Louis to Chicago O'Hare Intl Airport at least 25 days early can save you up to 57% on average compared to booking a flight this week. If booking 25 days before your flight isn’t an option for you, users have found flights from St. Louis to Chicago O'Hare Intl Airport for as little as $237 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $333 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Chicago O'Hare Intl Airport?

January can be a great time to fly to Chicago O'Hare Intl Airport from St. Louis with a flight ticket averaging about $225. Cheapflights users have found deals in the month of January for as cheap as $136. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from St. Louis to Chicago O'Hare Intl Airport (STL - ORD)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Chicago O'Hare Intl Airport as you normally would.

Cheap flights from St. Louis to O'Hare Intl in August, September 2022

The best prices found for STL to ORD flights for August, September
Sep 3 - Sep 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

5h 56m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 10m
$155

American Airlines

Pick Dates

Deal found 8/18/22

Sep 13 - Sep 14
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 31m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 25m
$156

United Airlines

Pick Dates

Deal found 8/18/22

Sep 13 - Sep 14
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

4h 41m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 25m
$165

Multiple Airlines

Pick Dates

Deal found 8/18/22

St. Louis to O'Hare Intl 2022 flight deals

Cheap flights to O'Hare Intl from St. Louis found for this year
Sep 3 - Sep 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

5h 56m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 10m
$155

American Airlines

Pick Dates

Deal found 8/18/22

Sep 13 - Sep 14
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 31m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 25m
$156

United Airlines

Pick Dates

Deal found 8/18/22

Nov 15 - Nov 16
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 20m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

6h 48m
$163

American Airlines

Pick Dates

Deal found 8/18/22

Cheap Delta flights from St. Louis to O'Hare Intl

Oct 11 - Oct 12
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

4h 49m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

6h 02m
$171

Delta

Pick Dates

Deal found 8/17/22

Oct 18 - Nov 1
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

4h 49m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

6h 10m
$172

Delta

Pick Dates

Deal found 8/17/22

Sep 13 - Sep 14
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

6h 41m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

6h 23m
$174

Delta

Pick Dates

Deal found 8/18/22

Cheap American Airlines flights from St. Louis to O'Hare Intl

Sep 3 - Sep 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

5h 56m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 10m
$155

American Airlines

Pick Dates

Deal found 8/18/22

Nov 15 - Nov 16
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 20m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

6h 48m
$163

American Airlines

Pick Dates

Deal found 8/18/22

Sep 3 - Sep 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

2 stops

21h 35m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 08m
$186

American Airlines

Pick Dates

Deal found 8/18/22

Non-stop flights to O'Hare Intl from St. Louis

Save time with St. Louis to O'Hare Intl direct flight deals
Sep 13 - Sep 14
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 31m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 25m
$156

United Airlines

Pick Dates

Deal found 8/18/22

Oct 21 - Nov 2
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 17m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 13m
$198

American Airlines

Pick Dates

Deal found 8/16/22

Sep 2 - Sep 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 24m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 08m
$203

American Airlines

Pick Dates

Deal found 8/16/22

Last minute flights from St. Louis to O'Hare Intl

Late deals on return flights to O'Hare Intl from St. Louis, departing today and this week
Aug 28 - Aug 30
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

19h 44m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

12h 04m
$221

Multiple Airlines

Pick Dates

Deal found 8/18/22

Aug 24 - Sep 22
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

13h 51m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

19h 59m
$223

Multiple Airlines

Pick Dates

Deal found 8/16/22

Aug 25 - Aug 30
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

19h 44m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

12h 04m
$230

Multiple Airlines

Pick Dates

Deal found 8/16/22

One-way flights to O'Hare Intl from St. Louis

The cheapest one-way flights from St. Louis to O'Hare Intl
Sep 19
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

15h 07m
$74

Multiple Airlines

Pick Dates

Deal found 8/16/22

Sep 12
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

15h 07m
$75

Multiple Airlines

Pick Dates

Deal found 8/17/22

Sep 7
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 31m
$78

United Airlines

Pick Dates

Deal found 8/17/22

Related info for your journey

Useful info, stats and facts about St. Louis to O'Hare Intl flights.

What airport do you fly from for flights from St. Louis to Chicago O'Hare Intl?

If you book a flight to Chicago O'Hare Intl from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 46 flights from Lambert-St Louis to Chicago O'Hare Intl per day from 8 different airlines.

Which airlines flying from Lambert-St Louis to Chicago O'Hare Intl have flexible cancellations due to COVID-19?

American Airlines, United Airlines, and Train are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from St. Louis to Chicago O'Hare Intl Airport for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Chicago O'Hare Intl Airport for under $200. The cheapest flight booked recently is on American Airlines for just $155, but on average you can expect to pay $190.

Are there nonstop flights from St. Louis to Chicago O'Hare Intl Airport for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Chicago O'Hare Intl Airport under $200. A good price for a nonstop flight from St. Louis to Chicago O'Hare Intl Airport is less than $250.

Are there last-minute flights available from St. Louis to Chicago O'Hare Intl Airport for under $300?

There are currently 20+ open flights from St. Louis to Chicago O'Hare Intl Airport within the next 7 days for less than $300.

What days are nonstop flights available from St. Louis to Chicago O'Hare Intl Airport?

Nonstop flights are available for this route on the following days: Sunday, Monday, Tuesday, Wednesday, Friday, Saturday.

How many flights depart from St. Louis to Chicago O'Hare Intl Airport on average per day?

On average, you can expect to see 15 flights from St. Louis to Chicago O'Hare Intl Airport a day.
Morning (6am - Noon) - 53% of flight departures
Afternoon (Noon - 6pm) - 47% of flight departures

How long is the flight from St. Louis to Chicago O'Hare Intl Airport?

American Airlines, United Airlines, and Delta can get you from St. Louis to Chicago O'Hare Intl Airport in just under 1h 31m. Your travel time can differ by up to 4h 25m. The distance between St. Louis and Chicago O'Hare Intl Airport is about 259 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from St. Louis to Chicago O'Hare Intl Airport round-trip?

Flying on American Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at $155. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $156 and $171, respectively. American Airlines is 34% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from St. Louis to Chicago O'Hare Intl Airport one-way?

For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $78. Users have also found prices from $82 and $92 on Delta and Spirit Airlines, respectively.

What are the most popular airlines that fly from St. Louis to Chicago O'Hare Intl Airport?

Consider Train, Bus or Air Choice One when booking your flight. These represent the most popular airlines when flying from St. Louis to Chicago O'Hare Intl Airport.

What are the most reliable airlines from St. Louis to Chicago O'Hare Intl Airport?

Before booking your flight to Chicago O'Hare Intl Airport from St. Louis, check out the most reliable airlines to get you to your destination on time: Finnair (100%), ANA (92%), Lufthansa( 86%).

What are the cheapest flights from St. Louis to Chicago O'Hare Intl Airport?

The cheapest flight price from St. Louis to Chicago O'Hare Intl Airport is $99. On average you can expect to pay $396. The most popular route, (Lambert-St Louis - Chicago O'Hare Intl), can usually be booked for $156.

Alternative routes for St. Louis to O'Hare Intl

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

Top 3 airlines flying from St. Louis to O'Hare Intl

The chart below displays the airlines Cheapflights users traveling from St. Louis to O'Hare Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Air Choice OneCheapest$70Average$74FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Air Choice One flights
United AirlinesCheapest$103Average$239FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$120Average$279FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from St. Louis to O'Hare Intl

See what time of day planes typically take off from St. Louis to O'Hare Intl
13%of flight departuresEarly morningMidnight to 6 am
71%of flight departuresMorning6 am to noon
16%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to O'Hare Intl

See how many times per day planes take to the skies headed from St. Louis to O'Hare Intl
Sunday46daily flights
Monday49daily flights
Tuesday40daily flights
Wednesday48daily flights
Thursday51daily flights
Friday52daily flights
Saturday40daily flights