Question 1

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

Accepted Answer

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.

Question 2

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

Accepted Answer

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.

Question 3

Weekly flight availability from Portsmouth to Chicago

Accepted Answer

The most flights from P0R to CHI 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).

Question 4

E

Accepted Answer

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.

Question 5

E

Accepted Answer

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).

Question 6

What are the cheapest flights from Portsmouth to Chicago?

Accepted Answer

On average you can expect to pay £1,822 for a flight from Portsmouth to Chicago. The cheapest flight overall is £401 while the most popular route, (Southampton Eastleigh - Chicago O'Hare Intl) is currently priced at £706.

Question 7

What are the most reliable airlines from Portsmouth to Chicago?

Accepted Answer

Consider Air Canada (89%), Austrian Airlines (89%) or United Airlines (89%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Chicago.

Question 8

What are the most popular airlines that fly from Portsmouth to Chicago?

Accepted Answer

Consider American Airlines, Finnair or British Airways when booking your flight. These represent the most popular airlines when flying from Portsmouth to Chicago.

Question 9

How far in advance should I book a flight from Portsmouth to Chicago?

Accepted Answer

Users have found that booking a flight from Portsmouth to Chicago at least 45 days early can save you up to 23% on average compared to booking a flight this week. If booking 45 days before your flight isn’t an option for you, users have found flights from Portsmouth to Chicago for as little as £515 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £615 for flights departing within the next 3 days.

Question 10

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

Accepted Answer

February is one of the best times of the year to fly to Chicago from Portsmouth. Prices for February average £518 per person but you can even find prices for as low as £315. The most expensive prices can be found in the month of August. Opting for a February flight can save you 25% on your journey compared to booking in August

Question 11

What is the cheapest time of day to fly from P0R to CHI?

Accepted Answer

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.

Question 12

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

Accepted Answer

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

Question 13

How can I find direct flights from Portsmouth to Chicago?

Accepted Answer

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

Question 14

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

Accepted Answer

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.

Question 15

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

Accepted Answer

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.

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

Can Cheapflights notify me if prices for flights from Portsmouth to Chicago become cheaper?

Accepted Answer

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!

Round-trip from	£560
Popular in	August
Cheapest in	February
Average price	£646

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£309	Average£484	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£349	Average£499	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£362	Average£608	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£380	Average£576	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Brussels Airlines	Cheapest£389	Average£599	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£393	Average£571	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Austrian Airlines	Cheapest£396	Average£574	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
United Airlines	Cheapest£398	Average£566	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£399	Average£629	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£401	Average£562	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Cheap flights from Portsmouth to Chicago from £560

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/8. Fares are subject to change and may not be available on all flights or dates of travel.

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 8 July 2025.

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Find flight deals from Portsmouth to Chicago

Cheapest flights from Portsmouth to ChicagoExplore 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 8 July 2025.

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 8 July 2025.

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Use the filters below to find and compare flights from Portsmouth to Chicago that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Chicago

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

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 8 July 2025.

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 16 December 2024.

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 8 July 2025.

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 8 July 2025.

Check out reviews from past customers who have flown with Delta and Aer Lingus from Portsmouth to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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 most reliable airlines from Portsmouth to Chicago?

What are the cheapest flights from Portsmouth to Chicago?

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

How can I find direct flights from Portsmouth to Chicago?

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

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

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Alternative routes for Portsmouth to Chicago

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Top 10 airlines flying from Portsmouth to Chicago

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

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

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

Can Cheapflights notify me if prices for flights from Portsmouth to Chicago become cheaper?

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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 8 July 2025.