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Cheap flights from Portsmouth to Chicago O'Hare Intl Airport from £560

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
20 Jul — 27 Jul1
1 adult

Cheap flight deals from Portsmouth to O'Hare Intl

Keep the following information in mind while searching for Portsmouth to O'Hare Intl flight deals. Data was last updated 15 July 2025.

Round-trip from

£560

Popular in

July

Cheapest in

February

Average price

£654
Delta
  • Delta
  • 14/9-15/10
  • 2 total stops
  • 36h 20m total
  • Portsmouth to Chicago
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£65 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Portsmouth to O'Hare Intl

Cheapest flights from Portsmouth to O'Hare Intl
Explore the most affordable flight options available from Portsmouth to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2025.

Sun 14/918:25SOU - ORD
1 stop26h 15mDelta
Tue 14/1016:15ORD - SOU
1 stop10h 30mDelta
Deal found 12/7£560
Wed 27/809:20SOU - ORD
1 stop11h 20mKLM
Wed 3/911:05ORD - SOU
2 stops15h 40mKLM
Deal found 13/7£586
Wed 27/809:10SOU - ORD
2 stops15h 05mMultiple Airlines
Wed 3/919:25ORD - SOU
3 stops31h 20mMultiple Airlines
Deal found 13/7£659
Mon 15/909:40SOU - ORD
1 stop15h 20mBritish Airways
Mon 13/1021:15ORD - SOU
2 stops16h 10mBritish Airways
Deal found 12/7£692
Fri 22/809:40SOU - ORD
1 stop15h 20mAer Lingus
Sat 30/821:15ORD - SOU
1 stop16h 15mAer Lingus
Deal found 14/7£752

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth 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 858,174 searches. Data last updated 15 July 2025.
Use the filters below to find and compare flights from Portsmouth to Chicago O'Hare Intl Airport that are best for you.

Fly from

Portsmouth

Fly to

O'Hare Intl

Route

Depart

Return

Price

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 14/9

18:25-14:40

1 stop26h 15m

Chicago O'Hare Intl

Wed 15/10

16:40-08:45

1 stop10h 05m

£560

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 27/8

09:20-14:40

1 stop11h 20m

Chicago O'Hare Intl

Wed 3/9

16:40-08:45

1 stop10h 05m

£586

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 27/8

09:10-18:15

2 stops15h 05m

Chicago O'Hare Intl

Wed 3/9

19:25-08:45

3 stops31h 20m

£659

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Mon 15/9

09:40-19:00

1 stop15h 20m

Chicago O'Hare Intl

Mon 13/10

21:15-19:25

2 stops16h 10m

£692

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Fri 22/8

09:40-19:00

1 stop15h 20m

Chicago O'Hare Intl

Sat 30/8

21:15-19:30

1 stop16h 15m

£752

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 11/1

16:05-19:15

1 stop33h 10m

£840

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Fri 19/9

20:00-21:34

3 stops31h 34m

£1,073

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Tue 16/9

20:00-19:00

1 stop29h 00m

£1,983

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 17/9

09:20-14:40

1 stop11h 20m

£6,933

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Mon 15/9

17:35-14:10

1 stop26h 35m

£6,949

Flights are sorted by cheapest return flights first.

Deals found on 14/7

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

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Portsmouth with our price prediction graph.
Estimated return 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 Portsmouth to Chicago O'Hare Intl Airport

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

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Chicago O'Hare Intl Airport (average of £595). Flying from Portsmouth to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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 P0R to ORD?

Find hourly flight availability from Portsmouth 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 15 July 2025.

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

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

Use this chart to determine the cheapest time to fly return from Portsmouth to O'Hare Intl. Price data was last updated on 16 December 2024.

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

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

Explore weekly flight availability from Portsmouth 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 15 July 2025.

The most flights from P0R to ORD are scheduled on a Monday (53 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (47 on average).

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 15 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andAer Lingus from Portsmouth to Chicago O'Hare Intl Airport. 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.
Delta
8.0
Very Good
7,956 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,956 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Aer Lingus
7.1
Good
1,165 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
British Airways
6.6
Okay
7,134 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth 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 are the cheapest airlines to fly from Portsmouth to Chicago O'Hare Intl Airport one-way?

    The cheapet airlines for a one-way flight from Portsmouth to Chicago O'Hare Intl Airport are British Airways (£840), Aer Lingus (£1,983), and Delta (£6,933).

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

    No one likes to see their flight delayed. When booking a flight from Portsmouth to Chicago O'Hare Intl Airport consider choosing Air Canada (89%), Austrian Airlines (89%) or United Airlines (89%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay £1,817 for a flight from Portsmouth to Chicago O'Hare Intl Airport. The cheapest flight overall is £420 while the most popular route, (Southampton Eastleigh - Chicago O'Hare Intl) is currently priced at £592.

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

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

  • How can I find direct flights from Portsmouth 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 Portsmouth to O'Hare Intl.

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

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

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to Chicago O'Hare Intl Airport (average of £595). Flying from Portsmouth to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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

Travelling 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
Downers Grove
Elk Grove Village
Rosemont

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Alternative routes for Portsmouth to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Heathrow to Midway flights
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Darlington to Midway flights
Norwich to O'Hare Intl flights

Top 10 airlines flying from Portsmouth to O'Hare Intl

Discover the top 10 airlines that operate flights from Portsmouth 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 858,174 searches. Data last updated 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£311Average£492FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£353Average£505FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£367Average£615FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£381Average£491FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£393Average£590FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
LufthansaCheapest£397Average£576FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£403Average£580FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
American AirlinesCheapest£404Average£635FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£406Average£565FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£407Average£566FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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Can Cheapflights find flights from Portsmouth to O'Hare Intl with no change fees?

Need flexible booking options for your flight to O'Hare Intl from Portsmouth? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Portsmouth to O'Hare Intl become cheaper?

Yes, Cheapflights offers price alerts on Portsmouth to O'Hare Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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