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Cheap flights from Portsmouth to Chicago O'Hare Intl Airport from £545

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 24/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
2 Apr — 9 Apr1
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 28 March 2025.

Round-trip from

£604

One-way from

£545

Popular in

August

Cheapest in

February

Average price

£495
Virgin Atlantic
  • Virgin Atlantic
  • 24/4-1/5
  • 3 total stops
  • 50h 20m total
  • Portsmouth to Chicago
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24/4
  • 24/4
  • 3 total stops
  • 41h 14m total
  • Portsmouth to Chicago
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
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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 28 March 2025.

Thu 24/409:20SOU - ORD
1 stop10h 50mVirgin Atlantic
Thu 1/511:15ORD - SOU
2 stops39h 30mVirgin Atlantic
Deal found 27/3£604
Thu 24/420:00SOU - ORD
2 stops23h 50mAer Lingus
Thu 1/515:45ORD - SOU
1 stop10h 55mAer Lingus
Deal found 27/3£653
Tue 17/609:20SOU - ORD
1 stop10h 50mDelta
Tue 1/716:20ORD - SOU
1 stop10h 25mDelta
Deal found 28/3£673
Tue 17/609:20SOU - ORD
1 stop10h 50mKLM
Tue 1/716:20ORD - SOU
1 stop10h 25mKLM
Deal found 27/3£711
Sun 11/509:10SOU - ORD
3 stops42h 40mMultiple Airlines
Sun 18/508:37ORD - SOU
3 stops42h 13mMultiple Airlines
Deal found 27/3£746

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 28 March 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

Thu 24/4

09:20-14:10

1 stop10h 50m

Chicago O'Hare Intl

Thu 1/5

11:15-08:45

2 stops39h 30m

£604

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 24/4

20:00-13:50

2 stops23h 50m

Chicago O'Hare Intl

Thu 1/5

15:45-08:40

1 stop10h 55m

£653

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Tue 17/6

09:20-14:10

1 stop10h 50m

Chicago O'Hare Intl

Tue 1/7

16:20-08:45

1 stop10h 25m

£673

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Tue 17/6

09:20-14:10

1 stop10h 50m

Chicago O'Hare Intl

Tue 1/7

16:20-08:45

1 stop10h 25m

£711

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 11/5

09:10-21:50

3 stops42h 40m

Chicago O'Hare Intl

Sun 18/5

08:37-08:50

3 stops42h 13m

£746

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 24/4

20:50-08:04

3 stops41h 14m

£545

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 24/4

17:15-14:00

1 stop26h 45m

£711

Flights are sorted by cheapest return flights first.

Deals found on 27/3

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 28 March 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.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 28 March 2025.
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,896 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Virgin Atlantic
7.4
Good
634 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,062 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 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 (93%), Austrian Airlines (93%) or United Airlines (93%) 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 £1,756 for a flight from Portsmouth to Chicago O'Hare Intl Airport. The cheapest flight overall is £434 while the most popular route, (Southampton Eastleigh - Chicago O'Hare Intl) is currently priced at £525.

  • 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 Portsmouth?

Book flights to Portsmouth if you plan to visit one of these locations
Evanston
Downers Grove
Schaumburg
Elk Grove Village
Beloit
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.
Heathrow to O'Hare Intl flights
Gatwick to O'Hare Intl flights
Heathrow to Midway flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Manchester to O'Hare Intl flights
Luton to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Manchester to Midway flights
Gatwick to Midway flights
Edinburgh to Midway flights
London City to Midway flights
Birmingham to O'Hare Intl flights
Liverpool to O'Hare Intl flights
Newcastle upon Tyne to O'Hare Intl flights
Bristol to O'Hare Intl flights
Southampton to O'Hare Intl flights
Birmingham to Midway flights
Newcastle upon Tyne to Midway flights
Bristol to Midway flights
Leeds to O'Hare Intl flights
Leeds to Midway flights
Southampton to Midway flights
Norwich to O'Hare Intl flights
Exeter to O'Hare Intl flights
Southend to O'Hare Intl flights
Doncaster to O'Hare Intl flights
Newquay to O'Hare Intl flights
Darlington to O'Hare Intl flights
Darlington to Midway flights
Grimsby 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 28 March 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£324Average£498FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£367Average£521FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£381Average£611FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£419Average£574FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Austrian AirlinesCheapest£422Average£578FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£424Average£582FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£424Average£598FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£428Average£566FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£437Average£707FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Aer LingusCheapest£449Average£589FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to O'Hare Intl?

When you search for this flight from Portsmouth to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to O'Hare Intl?

Millions of users choose and trust Cheapflights to book the best flight deals from Portsmouth to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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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