Can I get a flight from London to Chicago O'Hare Intl Airport on Finnair for under £800?

9 Finnair flights from LON to ORD have recently been found on Cheapflights for under £800. Click here to find the best deals to Chicago O'Hare Intl Airport for your desired dates.

£392+ Finnair Flights from London 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 London to O'Hare Intl in 2025

One-way from	£392
Return from	£560
Popular in	July
Cheapest in	February
Average price (all airlines)	£556

Finnair
25/1
Nonstop
8h 50m total
London to Chicago

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Finnair
13/1-21/1
Nonstop
16h 30m total
London to Chicago

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Highest demand for flights from London to Chicago O'Hare Intl; 11% potential price increase.

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

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

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Can I get a flight from London to Chicago O'Hare Intl Airport on Finnair for under £800?
9 Finnair flights from LON to ORD have recently been found on Cheapflights for under £800. Click here to find the best deals to Chicago O'Hare Intl Airport for your desired dates.

Find Finnair flight deals from London to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest Finnair flights from London to O'Hare Intl
Explore the most affordable Finnair flight options available from London to O'Hare Intl. Find the lowest fares with prices last updated on 15 October 2025.

Wed 22/1011:05LHR - ORD

Nonstop8h 45mFinnair

Sat 25/1016:28ORD - LHR

1 stop32h 52mFinnair

Deal found 13/10£923

Mon 20/1020:15LHR - ORD

2 stops24h 00mFinnair

Tue 28/1016:28ORD - LHR

1 stop12h 12mFinnair

Deal found 13/10£961

Mon 20/1016:25LHR - ORD

1 stop33h 15mFinnair

Wed 29/1016:28ORD - LHR

2 stops19h 32mFinnair

Deal found 13/10£964

Best Finnair flights from London to O'Hare Intl
Discover carefully curated Finnair flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 October 2025.

Tue 13/114:10LHR - ORD

Nonstop8h 50mFinnair

Wed 21/120:45ORD - LHR

Nonstop7h 40mFinnair

Deal found 12/10£560

Mon 2/315:45LHR - ORD

Nonstop9h 00mFinnair

Wed 25/319:45ORD - LHR

Nonstop7h 50mFinnair

Deal found 14/10£561

Mon 2/311:00LHR - ORD

Nonstop8h 50mFinnair

Mon 23/318:10ORD - LHR

Nonstop7h 45mFinnair

Deal found 14/10£561

Direct Finnair flights from London to O'Hare Intl
Explore direct Finnair flight options from London to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 October 2025.

Tue 13/114:10LHR - ORD

Nonstop8h 50mFinnair

Wed 21/120:45ORD - LHR

Nonstop7h 40mFinnair

Deal found 12/10£560

Mon 2/311:00LHR - ORD

Nonstop8h 50mFinnair

Mon 23/318:10ORD - LHR

Nonstop7h 45mFinnair

Deal found 14/10£561

Thu 8/112:35LHR - ORD

Nonstop8h 50mFinnair

Sat 17/117:10ORD - LHR

Nonstop7h 45mFinnair

Deal found 14/10£621

Last-minute Finnair flights from London to O'Hare Intl
Discover last-minute Finnair flight deals from London to O'Hare Intl. Data last updated 15 October 2025 and is based on user searches.

Wed 22/1011:05LHR - ORD

Nonstop8h 45mFinnair

Sat 25/1016:28ORD - LHR

1 stop32h 52mFinnair

Deal found 13/10£923

Mon 20/1020:15LHR - ORD

2 stops24h 00mFinnair

Tue 28/1016:28ORD - LHR

1 stop12h 12mFinnair

Deal found 13/10£961

Mon 20/1016:25LHR - ORD

1 stop33h 15mFinnair

Wed 29/1016:28ORD - LHR

2 stops19h 32mFinnair

Deal found 13/10£964

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 15 October 2025.

Sun 25/114:10LHR - ORD

Nonstop8h 50mFinnair

Deal found 13/10£392

Sat 11/414:25LHR - ORD

Nonstop8h 35mFinnair

Deal found 13/10£397

Sun 11/112:35LHR - ORD

Nonstop8h 50mFinnair

Deal found 14/10£408

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

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

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

Currently, the most affordable month to book a Finnair flight from London to Chicago O'Hare Intl Airport in April, with an average price of £377. Conversely, traveling with Finnair from London to Chicago O'Hare Intl Airport in December will be the most expensive, with an average cost of £486. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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

The most Finnair flights from LON to ORD are scheduled on a Monday (4 on average). You will have fewer Finnair flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in O'Hare Intl by month

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.

Temperature in O'Hare Intl by month

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).

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

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

1,332 reviews

Check prices

Overview

Recent reviews

4.0

Mediocre|Sept 2025

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

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.

1 out of 444

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Finnair flights from London to Chicago O'Hare Intl Airport (LON - 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 London to O'Hare Intl in 2025

Find detailed information about Finnair flights from London to O'Hare Intl. Explore the options provided by Finnair to plan your journey from London to O'Hare Intl. Data last updated 15 October 2025.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Can I get a flight from London to Chicago O'Hare Intl Airport on Finnair for under £800?

Find Finnair flight deals from London to O'Hare Intl

Cheapest Finnair flights from London to O'Hare IntlExplore the most affordable Finnair flight options available from London to O'Hare Intl. Find the lowest fares with prices last updated on 15 October 2025.

Explore the most affordable Finnair flight options available from London to O'Hare Intl. Find the lowest fares with prices last updated on 15 October 2025.

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

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

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

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

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

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

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

Other Finnair flights from London

Browse through other Finnair flights departing from London. Flight routes are based on user searches made on Cheapflights and were last updated on 15 October 2025.

See what others are saying about Finnair

Overview

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Cheapest Finnair flights from London to O'Hare Intl
Explore the most affordable Finnair flight options available from London to O'Hare Intl. Find the lowest fares with prices last updated on 15 October 2025.