Find flights
When to book
FAQs

Cheap flights from Portsmouth to Chicago O'Hare Intl Airport from £490

LHR — ORD
18 Oct — 25 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to O'Hare Intl

Sat 31/1009:20 -
1 stop15h 00m
Sat 7/1115:55 -
1 stop14h 00m
Deal found 16/9£595
Thu 1/1020:00 -
1 stop24h 00m
Thu 15/1015:45 -
1 stop19h 05m
Deal found 14/9£598
Thu 24/920:00 -
2 stops30h 20m
Mon 28/915:45 -
1 stop10h 55m
Deal found 12/9£636
Tue 20/1009:15 -
1 stop16h 00m
Tue 3/1115:55 -
1 stop10h 55m
Deal found 16/9£675
Sun 18/1020:00 -
1 stop24h 00m
Wed 4/1115:55 -
1 stop14h 00m
Deal found 16/9£685
Wed 21/1009:20 -
1 stop15h 55m
Sat 31/1016:55 -
1 stop10h 50m
Deal found 16/9£696
Wed 21/1009:20 -
1 stop15h 55m
Wed 4/1118:35 -
2 stops18h 35m
Deal found 16/9£699
Sat 31/1009:25 -
2 stops17h 18m
Sat 7/1118:00 -
2 stops16h 50m
Deal found 16/9£704

Find flight deals from Portsmouth to O'Hare Intl

Round-trip from

£595

One-way from

£490

Popular in

August

Cheapest in

February

Average price

£609
British Airways
  • British Airways
  • 31/10-7/11
  • 2 total stops
  • 29h 00m total
  • Portsmouth to Chicago
Search Deals
British Airways
  • British Airways
  • 29/11-31/12
  • 1 total stop
  • 31h 45m total
  • Portsmouth to Chicago
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£65 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 September 2026
Search Deals

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

Cheapest return flight

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Thu 1/10

20:00-14:00

1 stop24h 00m

Chicago O'Hare Intl

Thu 15/10

15:45-16:50

1 stop19h 05m

£598

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Thu 28/1

09:20-14:37

2 stops35h 17m

Chicago O'Hare Intl

Mon 1/2

20:45-11:50

2 stops33h 05m

£626

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Sat 31/10

09:25-21:43

2 stops17h 18m

Chicago O'Hare Intl

Sat 7/11

18:00-16:50

2 stops16h 50m

£704
Fastest return journey

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Thu 22/10

09:20-19:15

1 stop15h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£891

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Wed 21/10

09:20-19:15

1 stop15h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£897

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Fri 23/10

20:00-14:00

1 stop24h 00m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£900

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Sun 29/11

20:50-13:45

2 stops22h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£983

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Sat 26/9

17:20-19:15

1 stop31h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£1,017

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Sorted by cheapest first

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

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Chicago O'Hare Intl Airport

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.

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

The most flights from P0R to ORD are scheduled on a Wednesday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (39 on average).

Related info for your journey

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

    British Airways can get you from Portsmouth to Chicago O'Hare Intl Airport in just under 24h. Your travel time can differ by up to . The distance from Portsmouth to Chicago O'Hare Intl Airport is about 3921 mi.

  • 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 (88%), Austrian Airlines (88%) or United Airlines (88%) 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 £1,899 for a flight from Portsmouth to Chicago O'Hare Intl Airport. The cheapest flight overall is £401 while the most popular route, (Southampton Eastleigh - Chicago O'Hare Intl) is currently priced at £623.

  • 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.

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
Elk Grove Village

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Portsmouth to O'Hare Intl

AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£331Average£556FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£356Average£512FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£385Average£685FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Scandinavian AirlinesCheapest£388Average£546FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£389Average£583FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£396Average£668FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
British AirwaysCheapest£415Average£689FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£430Average£708FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£431Average£666FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£431Average£759FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.