Cheap flights from Portsmouth to Chicago O'Hare Intl Airport from £497
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/10. 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 17 September 2025.
Round-trip from | £497 |
---|---|
Popular in | July |
Cheapest in | February |
Average price | £435 |
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 17 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 17 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.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Thu 30/10
18:05-15:20
1 stop26h 15m
Chicago O'Hare Intl
Thu 6/11
13:08-08:05
2 stops12h 57m
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
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
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Mon 22/12
12:05-17:55
2 stops35h 50m
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Tue 23/12
15:20-06:25
3 stops45h 05m
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Sun 5/10
20:00-19:29
2 stops29h 29m
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Tue 30/9
20:00-19:00
1 stop29h 00m
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Wed 1/10
08:40-18:15
2 stops15h 35m
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Thu 2/10
09:40-19:24
2 stops15h 44m
SouthamptonChicago
SOU - ORD
SOUORD
Southampton Eastleigh
Sat 4/10
09:40-16:05
2 stops36h 25m
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?
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 17 September 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 17 September 2025.
The most flights from P0R to ORD are scheduled on a Tuesday (53 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (42 on average).
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.
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
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 17 September 2025.
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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.