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$84+ Cheap flights from O'Hare Intl (ORD) to St. Louis (STL)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STL
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from Chicago O'Hare Intl to Lambert-St Louis are usually found in September or May, booked 90 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Cheap flight deals from O'Hare Intl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$97
(Flightnetwork)

One-way from

$84
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$364
Provider with most accurate pricing for Chicago O'Hare Intl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Lambert-St Louis flights.
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From Chicago O'Hare Intl to Lambert-St Louis
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One-way flight from Chicago O'Hare Intl to Lambert-St Louis
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High demand for flights, 10% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from O'Hare Intl to St. Louis

Cheapest flights from O'Hare Intl to St. Louis
Explore the most affordable flight options available from O'Hare Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This oojo deal was found by Cheapflights users on 12/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/318:20 pmORD - STL
1 stop15h 25mSouthern / Mokulele
Tue 1/712:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 12/18$165
This Delta deal was found by Cheapflights users on 12/18. 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.
Tue 12/315:50 pmORD - STL
1 stop4h 16mDelta
Tue 1/76:00 amSTL - ORD
2 stops6h 55mDelta
Deal found 12/18$226
This Mytrip deal was found by Cheapflights users on 12/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:30 pmORD - STL
1 stop20h 20mMultiple Airlines
Tue 1/74:27 pmSTL - ORD
3 stops26h 52mMultiple Airlines
Deal found 12/18$280
This Southwest deal was found by Cheapflights users on 12/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/243:10 pmORD - STL
1 stop5h 35mSouthwest
Wed 12/2511:05 amSTL - ORD
2 stops7h 05mSouthwest
Deal found 12/17$301
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/318:42 pmORD - STL
Nonstop1h 37mAmerican Airlines
Thu 1/26:23 pmSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 12/17$304
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/254:20 pmORD - STL
Nonstop1h 31mUnited Airlines
Sun 12/296:25 amSTL - ORD
Nonstop1h 35mUnited Airlines
Deal found 12/17$429

Find flights from O'Hare Intl to St. Louis within your budget

Customize your flight search to find flights from O'Hare Intl to St. Louis 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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 1/31

8:20 pm-11:45 am

1 stop15h 25m

Lambert-St Louis

Fri 2/7

12:15 pm-7:40 am

1 stop19h 25m

$97

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 1/22

6:25 pm-8:02 pm

Nonstop1h 37m

Lambert-St Louis

Wed 1/29

11:30 am-1:04 pm

Nonstop1h 34m

$137

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/16

3:00 pm-4:20 pm

Nonstop1h 20m

Lambert-St Louis

Thu 1/23

5:40 am-7:08 am

Nonstop1h 28m

$167

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 1/13

4:58 pm-11:14 pm

2 stops6h 16m

Lambert-St Louis

Wed 1/15

2:00 pm-6:49 pm

1 stop4h 49m

$184

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 2/1

8:45 pm-10:26 pm

Nonstop1h 41m

Lambert-St Louis

Sat 2/8

1:00 pm-7:37 am

1 stop18h 37m

$208

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 1/31

8:20 pm-11:45 am

1 stop15h 25m

Lambert-St Louis

Fri 2/7

7:09 pm-9:52 pm

2 stops26h 43m

$231

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/9

6:15 am-4:55 pm

2 stops10h 40m

Lambert-St Louis

Mon 1/13

1:15 pm-9:30 pm

1 stop8h 15m

$251

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 1/13

2:10 pm-3:38 pm

Nonstop1h 28m

$84

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 1/7

7:05 am-12:10 pm

1 stop5h 05m

$85

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 1/7

5:45 am-11:47 am

1 stop6h 02m

$87

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 14 results
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Compare providers for flights from O'Hare Intl to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to St. Louis in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from O'Hare Intl 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.

Travel insights for flights from O'Hare Intl to St. Louis

Get recent, data-driven insights about flights from O'Hare Intl to St. Louis including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to St. Louis. Price data was last updated on December 13, 2024.

The price you pay for your flight from Chicago O'Hare Intl Airport to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 88 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to St. Louis (average of $311). Flying from Chicago O'Hare Intl Airport to St. Louis in March is currently the most expensive (average of $356). 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 ORD to STL?

Find hourly flight availability from O'Hare Intl to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

It’s typically best to fly out from Chicago O'Hare Intl Airport to St. Louis in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to St. Louis. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated December 18, 2024.
Get a feel of what it's like to fly with Southwest, Southern / Mokulele and United Airlines from Chicago to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to St. Louis. 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 into for flights to St. Louis from Chicago O'Hare Intl?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Chicago O'Hare Intl. On average, Lambert-St Louis has 19 inbound flights from Chicago O'Hare Intl per day from 3 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

    Flying on Southern / Mokulele is currently your cheapest option to St. Louis, with prices starting at $97. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $137 and $167, respectively. Southern / Mokulele is 64% cheaper than the average price of flights available within the next 90 days to this destination.

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

    $84 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Southern / Mokulele and Delta, with prices starting from $85 and $87, respectively.

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

    Before booking your flight to St. Louis from Chicago O'Hare Intl Airport, check out the most reliable airlines to get you to your destination on time: Republic Airways (92%), Alaska Airlines (91%), Envoy Air( 90%).

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

    While on average a flight from Chicago O'Hare Intl Airport to St. Louis is generally $330, our data shows the cheapest flight currently is $111. When looking at the most popular route, (Chicago O'Hare Intl - Lambert-St Louis), you can expect to pay $101 for that flight.

  • Can I find deals for flights from O'Hare Intl to St. Louis that include hotel bookings?

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

  • How can I find direct flights from O'Hare Intl to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to St. Louis.

  • Can I find deals for business class flights from O'Hare Intl to St. Louis?

    Yes. Cheapflights offers flight deals from O'Hare Intl to St. Louis 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 Chicago O'Hare Intl Airport to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to St. Louis (average of $311). Flying from Chicago O'Hare Intl Airport to St. Louis in March is currently the most expensive (average of $356). 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 3 airlines flying from O'Hare Intl to St. Louis

Discover the top 3 airlines that operate flights from O'Hare Intl to St. Louis. 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$115Average$277FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$126Average$308FlexibilityNo cancel feeOn-time69%
Southern / MokuleleCheapest$143Average$179FlexibilityNo cancel feeOn-timeN/A
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