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O'Hare Intl

$99+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Find cheap flights from Philadelphia to O'Hare Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Philadelphia to Chicago O'Hare Intl are usually found in October or November, booked 65 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap 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 August 1, 2026.

This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:54 am
PHL
-
ORD
Nonstop2h 36m
Frontier
Wed 10/76:00 am
ORD
-
PHL
1 stop7h 21m
Frontier
Deal found 7/31$175
This Frontier deal was found by Cheapflights users on 7/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:00 pm
PHL
-
ORD
1 stop11h 08m
Frontier
Wed 9/28:05 am
ORD
-
PHL
1 stop13h 54m
Frontier
Deal found 7/30$178
This Super.com deal was found by Cheapflights users on 7/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:22 am
PHL
-
ORD
Nonstop2h 33m
Frontier
Sun 8/306:00 am
ORD
-
PHL
Nonstop2h 17m
Frontier
Deal found 7/31$179
This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:22 am
PHL
-
ORD
Nonstop2h 33m
Frontier
Tue 8/251:59 pm
ORD
-
PHL
1 stop7h 34m
Frontier
Deal found 7/31$181
This Priceline deal was found by Cheapflights users on 7/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:05 am
PHL
-
ORD
Nonstop2h 36m
Frontier
Sun 11/156:50 am
ORD
-
PHL
Nonstop2h 10m
Frontier
Deal found 7/30$182
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Fri 9/2511:54 am
PHL
-
ORD
Nonstop2h 36m
Frontier
Tue 9/293:50 pm
ORD
-
PHL
1 stop7h 19m
Frontier
Deal found 7/30$183
This Frontier deal was found by Cheapflights users on 7/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:05 pm
PHL
-
ORD
Nonstop2h 42m
Frontier
Mon 8/318:37 am
ORD
-
PHL
Nonstop2h 15m
Frontier
Deal found 7/29$184
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Thu 10/154:47 pm
PHL
-
ORD
Nonstop2h 37m
Frontier
Mon 10/199:20 am
ORD
-
PHL
1 stop7h 55m
Frontier
Deal found 7/29$185
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:43 pm
PHL
-
ORD
1 stop8h 45m
Frontier
Mon 10/267:29 pm
ORD
-
PHL
Nonstop2h 18m
Frontier
Deal found 7/27$186
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:22 am
PHL
-
ORD
Nonstop2h 33m
Frontier
Mon 8/318:37 am
ORD
-
PHL
Nonstop2h 15m
Frontier
Deal found 7/27$187
This Frontier deal was found by Cheapflights users on 8/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:47 pm
PHL
-
ORD
Nonstop2h 37m
Frontier
Sun 10/187:29 pm
ORD
-
PHL
Nonstop2h 18m
Frontier
Deal found 8/1$188

Find 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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$175
(Frontier)

One-way from

$99
(Super.com)

Popular in

March

Cheapest in

October

Average price

$283

Good round-trip deal

$289 or less

Good one-way deal

$150 or less
Provider with most accurate pricing for Philadelphia-Chicago O'Hare Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Chicago O'Hare Intl flights.
Search Deals
From Philadelphia to Chicago O'Hare Intl
Search Deals
One-way flight from Philadelphia to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Philadelphia to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Philadelphia to Chicago O'Hare Intl.
Search Deals

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 August 1, 2026.
Use the filters below to find and compare flights from Philadelphia to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 9/22

10:42 am-7:01 pm

1 stop9h 19m

Chicago O'Hare Intl

Thu 9/24

9:38 am-5:48 pm

1 stop7h 10m

$249

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 8/20

5:01 pm-6:31 pm

Nonstop2h 30m

Chicago O'Hare Intl

Tue 8/25

11:22 am-2:40 pm

Nonstop2h 18m

$257

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 8/18

6:56 pm-8:26 pm

Nonstop2h 30m

Chicago O'Hare Intl

Tue 8/25

8:45 am-2:21 pm

1 stop4h 36m

$267

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 10/1

9:34 am-10:59 am

Nonstop2h 25m

Chicago O'Hare Intl

Sun 10/4

6:15 pm-9:29 pm

Nonstop2h 14m

$274

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 8/19

8:20 am-9:45 am

Nonstop2h 25m

Chicago O'Hare Intl

Thu 8/20

9:45 pm-12:59 am

Nonstop2h 14m

$319

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Mon 11/16

7:40 pm-11:40 pm

1 stop5h 00m

Chicago O'Hare Intl

Sat 11/28

7:45 pm-10:57 pm

Nonstop2h 12m

$367

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 11/17

7:40 pm-11:39 pm

1 stop4h 59m

Chicago O'Hare Intl

Sat 11/28

7:45 pm-10:57 pm

Nonstop2h 12m

$367

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Fri 9/4

5:20 pm-8:30 pm

1 stop4h 10m

Chicago O'Hare Intl

Mon 9/7

6:59 am-11:51 am

1 stop3h 52m

$373

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sun 11/22

10:00 am-6:35 pm

1 stop9h 35m

Chicago O'Hare Intl

Mon 11/23

11:38 am-11:11 am

1 stop22h 33m

$405

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sat 8/15

5:01 pm-6:31 pm

Nonstop2h 30m

Chicago O'Hare Intl

Tue 8/18

6:29 pm-9:43 pm

Nonstop2h 14m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Philadelphia to O'Hare Intl

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 Philadelphia to O'Hare Intl in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Trip.comPrice Accuracy1 starTrust 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 Philadelphia-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Chicago O'Hare Intl Airport 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 Philadelphia-Chicago O'Hare Intl Airport 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 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?

The best time to book flights from Philadelphia to Chicago O'Hare Intl Airport is 64 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, October is the cheapest month in which you can book a flight from Philadelphia to Chicago O'Hare Intl Airport (average of $235). Flying from Philadelphia to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $379). 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 August 1, 2026.

It’s optimal to fly from Philadelphia to Chicago O'Hare Intl Airport in the afternoon. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight at noon.

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 25, 2026.

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

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

Airfare is below average for this route at the moment.

Philadelphia to Chicago O'Hare Intl Airport flights typically cost between $195 and $362 in October.
The cheapest round-trip price found within the last 5 days was $175 on Frontier (Oct 5-Oct 7).

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to Chicago O'Hare Intl Airport trip
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

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
Marisa Garcia

Marisa Garcia

Expert on Frontier

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
Ramsey Qubein

Ramsey Qubein

Expert on ORD

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 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

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 August 1, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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
7.8
Good
8,498 reviews

Food

7.2

Boarding

8.1

Overall

7.8

Comfort

7.8

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,498 reviews
Delta
7.8
Good
8,498 reviews

Food

7.2

Boarding

8.1

Overall

7.8

Comfort

7.8

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,063 reviews
Delta
7.8
Good
8,498 reviews

Food

7.2

Boarding

8.1

Overall

7.8

Comfort

7.8

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,849 reviews
Delta
7.8
Good
8,498 reviews

Food

7.2

Boarding

8.1

Overall

7.8

Comfort

7.8

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Frontier
5.6
Fair
2,744 reviews
Delta
7.8
Good
8,498 reviews

Food

7.2

Boarding

8.1

Overall

7.8

Comfort

7.8

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 41 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.

  • How long is the flight from Philadelphia to Chicago O'Hare Intl Airport?

    Departing from Philadelphia to Chicago O'Hare Intl Airport will take you 2h 30m. The distance between Philadelphia and Chicago O'Hare Intl Airport is about 676 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, Frontier ($75), Delta ($133), and American Airlines ($168) offers the cheapest pricing from Philadelphia to Chicago O'Hare Intl Airport. Frontier is currently priced 75% 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 $51. American Airlines flights start at $88 while deals on United Airlines start at $93 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 Republic Airways (100%), SWISS (85%) and Japan Airlines (85%).

  • 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 $1,314, our data indicates the cheapest price to be $108. The most popular route (Philadelphia - Chicago O'Hare Intl), is priced around $128.

  • 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, October is the cheapest month in which you can book a flight from Philadelphia to Chicago O'Hare Intl Airport (average of $235). Flying from Philadelphia to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $379). 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
Benton Harbor
Rosemont
Schaumburg
Naperville
Lake Geneva
Oak Brook
Delavan
Oakbrook Terrace
Gurnee
South Holland
Libertyville
Orland Park
Hoffman Estates
Beloit
Downers Grove
Rockford
Aurora
Racine
Great Lakes
Janesville

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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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$75Average$184FlexibilityNo cancel feeOn-time62%
DeltaCheapest$133Average$266FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$168Average$339FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$171Average$349FlexibilityNo cancel feeOn-time69%

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