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

KLM and Virgin Atlantic can get you from Portsmouth to Chicago O'Hare Intl Airport in just under 20h 34m. Your travel time can differ by up to 6h 16m. The distance from Portsmouth to Chicago O'Hare Intl Airport is about 3921 mi. This flight may include one or multiple stops.

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.

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).

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

On average you can expect to pay £798 for a flight from Portsmouth to Chicago O'Hare Intl Airport. The cheapest flight overall is £408 while the most popular route, (Southampton Eastleigh - Chicago O'Hare Intl) is currently priced at £504.

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 Malaysia Airlines (79%), Air Canada (76%) or Austrian Airlines (76%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Portsmouth to Chicago O'Hare Intl Airport?

When booking a flight from Portsmouth to Chicago O'Hare Intl Airport, you may want to consider flying on American Airlines, Air Canada or Finnair as they are the most popular for this route.

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.

£498+ Cheap Flights from Portsmouth to Chicago O'Hare Intl Airport

Cheap flight deals from Portsmouth to O'Hare Intl

Round-trip from	£498
Popular in	July
Cheapest in	February
Average price	£434

KLM
31/10-7/11
2 total stops
37h 15m total
Portsmouth to Chicago

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£60 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 18 September 2025.

Fri 31/1017:30SOU - ORD

1 stop26h 50mKLM

Fri 7/1116:25ORD - SOU

1 stop10h 25mKLM

Deal found 16/9£498

Fri 3/1009:20SOU - ORD

2 stops20h 34mVirgin Atlantic

Tue 7/1016:15ORD - SOU

1 stop10h 30mVirgin Atlantic

Deal found 17/9£504

Fri 3/1009:20SOU - ORD

2 stops14h 44mKLM

Tue 7/1011:23ORD - SOU

2 stops15h 22mKLM

Deal found 17/9£511

Wed 8/1009:20SOU - ORD

2 stops17h 59mMultiple Airlines

Tue 14/1008:57ORD - SOU

2 stops17h 48mMultiple Airlines

Deal found 17/9£591

Fri 3/1009:40SOU - ORD

1 stop12h 05mMultiple Airlines

Tue 7/1021:15ORD - SOU

1 stop16h 15mMultiple Airlines

Deal found 17/9£602

Wed 8/1009:20SOU - ORD

1 stop11h 20mVirgin Atlantic

Tue 14/1016:15ORD - SOU

1 stop18h 45mVirgin Atlantic

Deal found 17/9£678

Fri 31/1014:25SOU - ORD

2 stops32h 20mMultiple Airlines

Fri 7/1119:20ORD - SOU

3 stops31h 25mMultiple Airlines

Deal found 16/9£756

Sat 27/1209:30SOU - ORD

1 stop14h 25mBritish Airways

Sat 17/121:00ORD - SOU

1 stop12h 35mBritish Airways

Deal found 16/9£846

Best flights from Portsmouth to O'Hare Intl
Discover carefully curated flight deals from Portsmouth to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Fri 31/1017:30SOU - ORD

1 stop26h 50mKLM

Fri 7/1116:25ORD - SOU

1 stop10h 25mKLM

Deal found 16/9£498

Fri 3/1009:20SOU - ORD

2 stops20h 34mVirgin Atlantic

Tue 7/1016:15ORD - SOU

1 stop10h 30mVirgin Atlantic

Deal found 17/9£504

Wed 8/1009:20SOU - ORD

2 stops17h 59mKLM

Tue 14/1016:15ORD - SOU

1 stop10h 30mKLM

Deal found 17/9£504

Thu 5/318:05SOU - ORD

1 stop26h 15mVirgin Atlantic

Mon 9/317:25ORD - SOU

1 stop18h 35mVirgin Atlantic

Deal found 15/9£534

Last-minute flights from Portsmouth to O'Hare Intl
Discover last-minute flight deals from Portsmouth to O'Hare Intl. Data last updated 18 September 2025 and is based on user searches.

Tue 30/919:55SOU - ORD

2 stops21h 55mBritish Airways

Tue 7/1015:45ORD - SOU

1 stop10h 20mBritish Airways

Deal found 16/9£892

Fri 3/1009:20SOU - ORD

2 stops20h 34mVirgin Atlantic

Tue 7/1016:15ORD - SOU

1 stop10h 30mVirgin Atlantic

Deal found 17/9£504

Fri 3/1009:20SOU - ORD

2 stops14h 44mKLM

Tue 7/1011:23ORD - SOU

2 stops15h 22mKLM

Deal found 17/9£511

Fri 3/1009:40SOU - ORD

1 stop12h 05mMultiple Airlines

Tue 7/1021:15ORD - SOU

1 stop16h 15mMultiple Airlines

Deal found 17/9£602

Wed 8/1009:20SOU - ORD

2 stops17h 59mMultiple Airlines

Tue 14/1008:57ORD - SOU

2 stops17h 48mMultiple Airlines

Deal found 17/9£591

Wed 8/1009:20SOU - ORD

1 stop11h 20mVirgin Atlantic

Tue 14/1016:15ORD - SOU

1 stop18h 45mVirgin Atlantic

Deal found 17/9£678

Fri 31/1017:30SOU - ORD

1 stop26h 50mKLM

Fri 7/1116:25ORD - SOU

1 stop10h 25mKLM

Deal found 16/9£498

Fri 31/1014:25SOU - ORD

2 stops32h 20mMultiple Airlines

Fri 7/1119:20ORD - SOU

3 stops31h 25mMultiple Airlines

Deal found 16/9£756

One-way flights from Portsmouth to O'Hare Intl
Search for one-way flight options from Portsmouth to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Tue 23/1215:20SOU - ORD

2 stops29h 10mMultiple Airlines

Deal found 16/9£541

Mon 22/1212:05SOU - ORD

2 stops35h 50mMultiple Airlines

Deal found 16/9£575

Wed 1/1009:10SOU - ORD

1 stop15h 50mBritish Airways

Deal found 16/9£702

Sun 5/1020:00SOU - ORD

2 stops29h 29mBritish Airways

Deal found 16/9£706

Tue 30/920:00SOU - ORD

1 stop29h 00mBritish Airways

Deal found 16/9£709

Thu 2/1009:40SOU - ORD

2 stops15h 44mBritish Airways

Deal found 16/9£739

Fri 3/1009:40SOU - ORD

1 stop12h 05mBritish Airways

Deal found 16/9£744

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Fri 31/10

17:30-15:20

1 stop26h 50m

Chicago O'Hare Intl

Fri 7/11

16:25-08:50

1 stop10h 25m

£498

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Fri 3/10

09:20-23:54

2 stops20h 34m

Chicago O'Hare Intl

Tue 7/10

16:15-08:45

1 stop10h 30m

£504

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 8/10

09:20-21:19

2 stops17h 59m

Chicago O'Hare Intl

Tue 14/10

16:15-08:45

1 stop10h 30m

£504

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 5/3

18:05-14:20

1 stop26h 15m

Chicago O'Hare Intl

Mon 9/3

17:25-17:00

1 stop18h 35m

£534

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Mon 22/12

12:05-17:55

2 stops35h 50m

£575

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Tue 23/12

15:20-06:25

3 stops45h 05m

£657

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 5/10

20:00-19:29

2 stops29h 29m

£706

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Tue 30/9

20:00-19:00

1 stop29h 00m

£709

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 1/10

08:40-18:15

2 stops15h 35m

£723

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 2/10

09:40-19:24

2 stops15h 44m

£739

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 11 results

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?

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?

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

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).

Related info for your journey

How long is the flight from Portsmouth to Chicago O'Hare Intl Airport?
KLM and Virgin Atlantic can get you from Portsmouth to Chicago O'Hare Intl Airport in just under 20h 34m. Your travel time can differ by up to 6h 16m. The distance from Portsmouth to Chicago O'Hare Intl Airport is about 3921 mi. This flight may include one or multiple stops.
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 Malaysia Airlines (79%), Air Canada (76%) or Austrian Airlines (76%) 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 £798 for a flight from Portsmouth to Chicago O'Hare Intl Airport. The cheapest flight overall is £408 while the most popular route, (Southampton Eastleigh - Chicago O'Hare Intl) is currently priced at £504.
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.

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Top 10 airlines flying from Portsmouth to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£307	Average£477	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£349	Average£476	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£362	Average£605	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Aer Lingus	Cheapest£362	Average£565	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Virgin Atlantic	Cheapest£375	Average£474	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Brussels Airlines	Cheapest£388	Average£543	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£390	Average£567	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Austrian Airlines	Cheapest£395	Average£564	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
British Airways	Cheapest£399	Average£553	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£403	Average£535	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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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.

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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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Cheap flights from Portsmouth to Chicago O'Hare Intl Airport from £498

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/10. Fares are subject to change and may not be available on all flights or dates of travel.

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 18 September 2025.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Portsmouth to O'Hare Intl

Cheapest flights from Portsmouth to O'Hare IntlExplore 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 18 September 2025.

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 18 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Chicago O'Hare Intl Airport that are best for you.

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.

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?

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 18 September 2025.

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.

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

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.

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

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

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

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

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

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

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

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

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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.

Top 10 airlines flying from Portsmouth to O'Hare Intl

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

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

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

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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 18 September 2025.