How do most travelers feel about Finnair?

The average rating from 544 Finnair reviews by Cheapflights users is 7.0 (out of a maximum rating of 10). If you are considering flying LHR-ORD with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to Chicago O'Hare Intl Airport with Finnair.

Weekly Finnair flight availability from London Heathrow Airport to Chicago O'Hare Intl Airport

The most Finnair flights from LHR to ORD are scheduled on a Tuesday (5 on average). You will have fewer Finnair flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

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).

£405+ Finnair Flights from Heathrow to O'Hare Intl

Cheapflights users flying from London to Chicago on Finnair typically fly into Chicago O'Hare Intl and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from Heathrow to O'Hare Intl in 2025

One-way from	£405
Return from	£405
Popular in	July
Cheapest in	February
Average price (all airlines)	£438

Finnair
15/12
Nonstop
8h 50m total
London to Chicago

Search Deals

Finnair
9/10-13/10
2 total stops
24h 44m total
London to Chicago

Search Deals

Highest demand for flights from London Heathrow to Chicago O'Hare Intl; 13% potential price increase.

Search Deals

Best time to find cheap flights from London Heathrow to Chicago O'Hare Intl; 2% potential price drop.

Search Deals

Average price for all London Heathrow to Chicago O'Hare Intl flights (one-way and round-trip).

Search Deals

Can I get a flight from London Heathrow Airport to Chicago O'Hare Intl Airport on Finnair for under £600?
London Heathrow Airport to Chicago O'Hare Intl Airport flights on Finnair are currently available under £600. 5 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.
How do most travelers feel about Finnair?
The average rating from 544 Finnair reviews by Cheapflights users is 7.0 (out of a maximum rating of 10). If you are considering flying LHR-ORD with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to Chicago O'Hare Intl Airport with Finnair.

Find Finnair flight deals from Heathrow to O'Hare Intl

Cheapest Finnair flights from Heathrow to O'Hare Intl
Explore the most affordable Finnair flight options available from Heathrow to O'Hare Intl. Find the lowest fares with prices last updated on 16 September 2025.

Thu 9/1009:15LHR - ORD

1 stop12h 50mFinnair

Mon 13/1018:36ORD - LHR

1 stop11h 54mFinnair

Deal found 14/9£405

Thu 25/917:00LHR - ORD

2 stops19h 51mFinnair

Mon 29/912:33ORD - LHR

1 stop14h 32mFinnair

Deal found 16/9£406

Fri 31/1014:10LHR - ORD

Nonstop8h 35mFinnair

Mon 3/1105:00ORD - LHR

1 stop20h 20mFinnair

Deal found 15/9£409

Best Finnair flights from Heathrow to O'Hare Intl
Discover carefully curated Finnair flight deals from Heathrow to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Mon 6/1011:00LHR - ORD

1 stop14h 11mFinnair

Mon 13/1018:36ORD - LHR

1 stop11h 54mFinnair

Deal found 14/9£405

Fri 28/1115:35LHR - ORD

2 stops21h 35mFinnair

Thu 4/1210:06ORD - LHR

1 stop30h 04mFinnair

Deal found 15/9£405

Fri 3/1009:45LHR - ORD

2 stops27h 06mFinnair

Sun 5/1009:20ORD - LHR

1 stop17h 45mFinnair

Deal found 15/9£405

Direct Finnair flights from Heathrow to O'Hare Intl
Explore direct Finnair flight options from Heathrow to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2025.

Thu 23/1012:15LHR - ORD

Nonstop8h 25mFinnair

Wed 29/1021:45ORD - LHR

Nonstop7h 40mFinnair

Deal found 15/9£543

Sun 19/1014:25LHR - ORD

Nonstop8h 35mFinnair

Sun 26/1019:25ORD - LHR

Nonstop7h 50mFinnair

Deal found 14/9£581

Thu 25/1214:10LHR - ORD

Nonstop8h 50mFinnair

Sat 3/118:45ORD - LHR

Nonstop7h 50mFinnair

Deal found 13/9£696

Last-minute Finnair flights from Heathrow to O'Hare Intl
Discover last-minute Finnair flight deals from Heathrow to O'Hare Intl. Data last updated 16 September 2025 and is based on user searches.

Thu 9/1009:15LHR - ORD

1 stop12h 50mFinnair

Mon 13/1018:36ORD - LHR

1 stop11h 54mFinnair

Deal found 14/9£405

Thu 25/917:00LHR - ORD

2 stops19h 51mFinnair

Mon 29/912:33ORD - LHR

1 stop14h 32mFinnair

Deal found 16/9£406

Fri 31/1014:10LHR - ORD

Nonstop8h 35mFinnair

Mon 3/1105:00ORD - LHR

1 stop20h 20mFinnair

Deal found 15/9£409

One-way Finnair flights to O'Hare Intl
Search for one-way Finnair flight options to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 16 September 2025.

Mon 15/1214:10LHR - ORD

Nonstop8h 50mFinnair

Deal found 15/9£405

Sun 15/310:15LHR - ORD

2 stops17h 13mFinnair

Deal found 14/9£416

Wed 29/1014:10LHR - ORD

Nonstop8h 35mFinnair

Deal found 14/9£417

Travel insights for Finnair flights from Heathrow to O'Hare Intl

Get recent, data-driven insights about Finnair flights from Heathrow to O'Hare Intl including ideal travel times, pricing trends, and more.

Prices

Airlines

How far ahead should I book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport with Finnair?

Booking with Finnair 11 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport with Finnair?

Currently, the most affordable month to book a Finnair flight from London Heathrow Airport to Chicago O'Hare Intl Airport in April, with an average price of £369. Conversely, traveling with Finnair from London Heathrow Airport to Chicago O'Hare Intl Airport in July will be the most expensive, with an average cost of £475. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Best time to book a flight from Heathrow to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Heathrow 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.

Browse thousands of different options on Cheapflights for your next trip

See what others are saying about Finnair

Finnair

7.6

Good

1,323 reviews

Check prices

Overview

Recent reviews

8.0

Very Good|Jul 2025

It was okay

2.0

Poor|Jun 2025

They stranded us in the airport

10.0

Wonderful|May 2025

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

10.0

Wonderful|May 2025

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

6.0

Okay|May 2025

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(

1 out of 441

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.

Finnair flights from London Heathrow Airport to Chicago O'Hare Intl Airport (LHR - ORD)

Cheapflights users flying from London to Chicago on Finnair typically fly into Chicago O'Hare Intl and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from Heathrow to O'Hare Intl in 2025

Find detailed information about Finnair flights from Heathrow to O'Hare Intl. Explore the options provided by Finnair to plan your journey from Heathrow to O'Hare Intl. Data last updated 16 September 2025.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Can I get a flight from London Heathrow Airport to Chicago O'Hare Intl Airport on Finnair for under £600?

How do most travelers feel about Finnair?

Find Finnair flight deals from Heathrow to O'Hare Intl

Cheapest Finnair flights from Heathrow to O'Hare IntlExplore the most affordable Finnair flight options available from Heathrow to O'Hare Intl. Find the lowest fares with prices last updated on 16 September 2025.

Explore the most affordable Finnair flight options available from Heathrow to O'Hare Intl. Find the lowest fares with prices last updated on 16 September 2025.

Travel insights for Finnair flights from Heathrow to O'Hare Intl

Get recent, data-driven insights about Finnair flights from Heathrow to O'Hare Intl including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport with Finnair?

What is the cheapest month to book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport with Finnair?

Weekly Finnair flight availability from London Heathrow Airport to Chicago O'Hare Intl Airport

Rainfall in O'Hare Intl by month

Temperature in O'Hare Intl by month

Best time to book a flight from Heathrow to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Heathrow with our price prediction graph.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Heathrow to O'Hare Intl on another airline

Consider alternative airlines that service the O'Hare Intl area. Flight routes are based on user searches made on Cheapflights and were last updated on 16 September 2025.

See what others are saying about Finnair

Overview

100% Free

Book with Flexibility

Travel Smart

Cheapest Finnair flights from Heathrow to O'Hare Intl
Explore the most affordable Finnair flight options available from Heathrow to O'Hare Intl. Find the lowest fares with prices last updated on 16 September 2025.