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O'Hare Intl

$75+ Cheap flights from Philadelphia (PHL) to O'Hare Intl (ORD)

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Chicago O'Hare Intl are usually found in September or August, booked 65 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Philadelphia to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to O'Hare Intl (ORD). 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 July 28, 2025.

Round-trip from

$144
(Kiwi.com)

One-way from

$75
(Cheapflightsfares)

Popular in

March

Cheapest in

September

Average price

$269

Good round-trip deal

$217 or less

Good one-way deal

$136 or less
From Philadelphia to Chicago O'Hare Intl
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One-way flight from Philadelphia to Chicago O'Hare Intl
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Highest demand for flights based on searches. 19% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 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 Philadelphia to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Philadelphia to Chicago O'Hare Intl.
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Find flight deals from Philadelphia to O'Hare Intl

Cheapest flights from Philadelphia to O'Hare Intl
Explore the most affordable flight options available from Philadelphia to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:58 pmPHL - ORD
1 stop8h 01mMultiple Airlines
Fri 8/296:35 amORD - PHL
Nonstop2h 17mMultiple Airlines
Deal found 7/26$144
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/149:14 pmPHL - ORD
Nonstop2h 35mFrontier
Fri 8/158:27 pmORD - PHL
Nonstop2h 26mFrontier
Deal found 7/26$148
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:58 pmPHL - ORD
1 stop8h 01mSpirit Airlines
Sat 8/2311:21 amORD - PHL
1 stop19h 42mSpirit Airlines
Deal found 7/27$175
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 8/2710:45 amPHL - ORD
Nonstop2h 35mAmerican Airlines
Mon 9/15:00 amORD - PHL
Nonstop2h 03mAmerican Airlines
Deal found 7/26$177

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to O'Hare Intl 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 28, 2025.
Use the filters below to find and compare flights from Philadelphia to Chicago O'Hare Intl Airport that are best for you.

Fly from

Philadelphia

Fly to

O'Hare Intl

Route

Depart

Return

Price

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 8/20

4:58 pm-11:59 pm

1 stop8h 01m

Chicago O'Hare Intl

Fri 8/29

6:35 am-9:52 am

Nonstop2h 17m

$144

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 8/14

9:14 pm-10:49 pm

Nonstop2h 35m

Chicago O'Hare Intl

Fri 8/15

8:27 pm-11:53 pm

Nonstop2h 26m

$148

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 8/20

4:58 pm-11:59 pm

1 stop8h 01m

Chicago O'Hare Intl

Sat 8/23

11:21 am-8:03 am

1 stop19h 42m

$175

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 8/27

6:39 pm-8:11 pm

Nonstop2h 32m

Chicago O'Hare Intl

Tue 9/2

9:11 pm-12:24 am

Nonstop2h 13m

$177

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Mon 8/18

5:48 pm-7:27 pm

Nonstop2h 39m

$75

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 8/14

2:06 pm-11:59 pm

1 stop10h 53m

$79

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 9/23

2:15 pm-3:43 pm

Nonstop2h 28m

$89

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sat 11/8

2:19 pm-6:49 pm

1 stop5h 30m

$99

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 8/20

1:03 pm-2:25 pm

Nonstop2h 22m

$109

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sun 11/23

6:00 am-11:56 am

1 stop6h 56m

$111

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

The best insider tips for Philadelphia to Chicago O'Hare Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to Chicago O'Hare Intl Airport trip
Airlines
Frontier

Frontier's UpFront Plus seats guarantee an empty middle seat with 32” separation for added comfort.


Frontier charges for carry-on bags; add during booking for lower fees and quicker boarding.

Read more about Frontierby Marisa Garcia
United Airlines

Basic Economy allows only a personal item; no carry-on bags unless you're a MileagePlus member.


Economy Plus offers extra legroom seats at the front of the economy cabin for MileagePlus Premier members.

Read more about United Airlinesby Harriet Baskas
Airports
PHL

For a quick check-in, verify your airline’s terminal before arriving at PHL. Terminals are spread out, and only some are connected by indoor walkways.

Read more about PHLby Mark Chesnut
ORD

For a smooth arrival at ORD, consider taking the 'L' train to avoid Chicago traffic. It's a reliable option from the city center.

Read more about ORDby Ramsey Qubein
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more

Best time to book a flight from Philadelphia to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Philadelphia 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 Philadelphia to Chicago O'Hare Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to O'Hare Intl. Price data was last updated on July 25, 2025.

The best time to book flights from Philadelphia to Chicago O'Hare Intl Airport is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Philadelphia to Chicago O'Hare Intl Airport (average of $245). Flying from Philadelphia to Chicago O'Hare Intl Airport 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 PHL to ORD?

Find hourly flight availability from Philadelphia to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

It’s optimal to fly from Philadelphia to Chicago O'Hare Intl Airport in the evening. By choosing this option you can save up to 43% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Philadelphia to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to O'Hare Intl. Price data was last updated on July 27, 2025.

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

Weekly flight availability from Philadelphia to Chicago O'Hare Intl Airport

Explore weekly flight availability from Philadelphia to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2025.

The most flights from PHL to ORD are scheduled on a Monday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (38 on average).

How much does it cost to fly round-trip from Philadelphia to Chicago O'Hare Intl Airport?

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated July 28, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Philadelphia to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,975 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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
7,975 reviews
Delta
8.0
Very good
7,975 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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!
United Airlines
7.4
Good
8,892 reviews
Delta
8.0
Very good
7,975 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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
7,975 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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!
Spirit Airlines
6.3
Okay
8,040 reviews
Delta
8.0
Very good
7,975 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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!
Frontier
5.9
Fair
3,238 reviews
Delta
8.0
Very good
7,975 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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 Philadelphia to O'Hare Intl. 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 Philadelphia to Chicago O'Hare Intl?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Chicago O'Hare Intl. On average, Philadelphia has 42 outbound flights to Chicago O'Hare Intl per day from 4 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

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

    According to our current data, Frontier ($148), Spirit Airlines ($175), and American Airlines ($177) offers the cheapest pricing from Philadelphia to Chicago O'Hare Intl Airport. Frontier is currently priced 46% below the average price you’ll pay for this route.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $75. Spirit Airlines flights start at $79 while deals on American Airlines start at $89 one-way.

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

    The top 3 most reliable airlines when flying from Philadelphia to Chicago O'Hare Intl Airport are ANA (85%), SWISS (82%) and Royal Jordanian (77%).

  • What are the cheapest flights from Philadelphia to Chicago O'Hare Intl Airport?

    Looking for the cheapest flight from Philadelphia to Chicago O'Hare Intl Airport? While on average our users pay $1,463, our data indicates the cheapest price to be $70. The most popular route (Philadelphia - Chicago O'Hare Intl), is priced around $85.

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

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

  • How can I find direct flights from Philadelphia to O'Hare Intl?

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to Chicago O'Hare Intl Airport (average of $245). Flying from Philadelphia to Chicago O'Hare Intl Airport 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.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Beloit
Hoffman Estates
Skokie
Naperville
Arlington Heights
Des Plaines
Elgin
Orland Park
Elk Grove Village
Racine
Rockford
Tinley Park
Merrillville
Evanston
Lake Geneva
Gurnee
Joliet
Waukegan

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Alternative routes for Philadelphia to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to O'Hare Intl flights
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State College to Midway flights
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Top 4 airlines flying from Philadelphia to O'Hare Intl

Discover the top 4 airlines that operate flights from Philadelphia to O'Hare Intl. 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$52Average$148FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$246FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$148Average$311FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$157Average$295FlexibilityNo cancel feeOn-time71%

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