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Cheap flights from Portsmouth to Chicago from £530

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Portsmouth to Chicago

Keep the following information in mind while searching for Portsmouth to Chicago flight deals. Data was last updated 21 February 2025.

Round-trip from

£776

One-way from

£530

Popular in

August

Cheapest in

February

Average price

£459
KLM
  • KLM
  • 6/4-13/4
  • 2 total stops
  • 36h 10m total
  • Portsmouth to Chicago
Search Deals
Aer Lingus
  • Aer Lingus
  • 19/4
  • 1 total stop
  • 15h 20m total
  • Portsmouth to Chicago
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£61 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 February 2025
Search Deals

Find flight deals from Portsmouth to Chicago

Cheapest flights from Portsmouth to Chicago
Explore the most affordable flight options available from Portsmouth to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Sun 6/418:25SOU - ORD
1 stop25h 45mKLM
Sun 13/416:20ORD - SOU
1 stop10h 25mKLM
Deal found 20/2£776
Sun 6/409:10SOU - ORD
2 stops35h 00mMultiple Airlines
Sun 13/416:20ORD - SOU
2 stops21h 10mMultiple Airlines
Deal found 20/2£819
Sun 6/418:25SOU - MDW
2 stops51h 47mVirgin Atlantic
Sun 13/409:23MDW - SOU
2 stops17h 22mVirgin Atlantic
Deal found 20/2£867

Find flights from Portsmouth to Chicago within your budget

Customise your flight search to find flights from Portsmouth to Chicago 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 21 February 2025.

Fly from

Portsmouth

Fly to

Chicago

Route

Depart

Return

Price

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 6/4

18:25-14:10

1 stop25h 45m

Chicago O'Hare Intl

Sun 13/4

16:20-08:45

1 stop10h 25m

£776

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 6/4

09:10-14:10

2 stops35h 00m

Chicago O'Hare Intl

Sun 13/4

16:20-19:30

2 stops21h 10m

£819

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Sun 6/4

18:25-16:12

2 stops51h 47m

Chicago Midway

Sun 13/4

09:23-08:45

2 stops17h 22m

£867

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sat 19/4

09:40-19:00

1 stop15h 20m

£530

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Sat 19/4

09:20-18:20

2 stops15h 00m

£1,277

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 27/7

17:35-14:10

1 stop26h 35m

£1,490

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Portsmouth to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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.

Travel insights for flights from Portsmouth to Chicago

Get recent, data-driven insights about flights from Portsmouth to Chicago including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Portsmouth to Chicago?

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Chicago (average of £595). Flying from Portsmouth to Chicago 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 CHI?

Find hourly flight availability from Portsmouth to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

When flying from Portsmouth to Chicago, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Portsmouth to Chicago?

Use this chart to determine the cheapest time to fly return from Portsmouth to Chicago. Price data was last updated on 25 February 2024.

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

Weekly flight availability from Portsmouth to Chicago

Explore weekly flight availability from Portsmouth to Chicago. 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 21 February 2025.

The most flights from P0R to CHI are scheduled on a Wednesday (38 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago 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 when rainfall is around 43.0 mm.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, 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 Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated 21 February 2025.
Delta
8.0
Very Good
8,213 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
8,213 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,331 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
7.5
Good
654 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,070 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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 Chicago. 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 one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at £530. KLM flights start at £1,277 while deals on Delta start at £1,490 one-way.

  • What are the most reliable airlines from Portsmouth to Chicago?

    Consider Air Canada (91%), Austrian Airlines (91%) or United Airlines (91%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Chicago.

  • What are the cheapest flights from Portsmouth to Chicago?

    On average you can expect to pay £1,146 for a flight from Portsmouth to Chicago. The cheapest flight overall is £438 while the most popular route, (Southampton Eastleigh - Chicago O'Hare Intl) is currently priced at £658.

  • Can I find deals for flights from Portsmouth to Chicago that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Chicago.

  • Can I find deals for business class flights from Portsmouth to Chicago?

    Yes. Cheapflights offers flight deals from Portsmouth to Chicago 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?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to Chicago (average of £595). Flying from Portsmouth to Chicago 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

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Alternative routes for Portsmouth to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Portsmouth to Chicago

Discover the top 10 airlines that operate flights from Portsmouth to Chicago. 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£332Average£511FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£376Average£530FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£388Average£585FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£417Average£627FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£425Average£587FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Austrian AirlinesCheapest£434Average£599FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£437Average£594FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£440Average£624FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£453Average£595FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
FinnairCheapest£473Average£611FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Chicago?

Deals for Portsmouth to Chicago flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Chicago?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portsmouth to Chicago.

Can Cheapflights find flights from Portsmouth to Chicago with no change fees?

Need flexible booking options for your flight to Chicago 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 Chicago become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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