Finnair flights from London to Chicago O'Hare Intl Airport (LON - ORD)
LON — ORD
2 Oct — 9 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
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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 2 September 2026.
Thu 10/912:15 -
Nonstop8h 40m
Wed 23/917:55 -
Nonstop7h 45m
Deal found 2/9£554
Sat 5/909:45 -
Nonstop8h 45m
Fri 18/920:50 -
Nonstop8h 00m
Deal found 29/8£555
Thu 17/913:00 -
1 stop12h 39m
Wed 30/920:50 -
Nonstop8h 00m
Deal found 31/8£558
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 2 September 2026.
Tue 13/1012:15 -
Nonstop8h 45m
Tue 27/1016:25 -
1 stop11h 50m
Deal found 30/8£576
Thu 22/1012:15 -
Nonstop8h 45m
Thu 29/1022:50 -
Nonstop7h 45m
Deal found 28/8£588
Fri 23/1014:45 -
Nonstop8h 50m
Tue 27/1018:10 -
Nonstop7h 45m
Deal found 28/8£588
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 2 September 2026.
Thu 17/909:45 -
Nonstop8h 40m
Wed 30/920:50 -
Nonstop8h 00m
Deal found 31/8£555
Sat 19/909:45 -
Nonstop8h 40m
Mon 21/922:25 -
Nonstop7h 50m
Deal found 31/8£563
Wed 7/1014:45 -
Nonstop8h 50m
Wed 14/1022:30 -
Nonstop7h 45m
Deal found 31/8£565
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 2 September 2026 and is based on user searches.
Thu 10/912:15 -
Nonstop8h 40m
Wed 23/917:55 -
Nonstop7h 45m
Deal found 2/9£554
Sat 5/909:45 -
Nonstop8h 45m
Fri 18/920:50 -
Nonstop8h 00m
Deal found 29/8£555
Thu 17/913:00 -
1 stop12h 39m
Wed 30/920:50 -
Nonstop8h 00m
Deal found 31/8£558
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 2 September 2026.
Fri 30/1011:00 -
Nonstop8h 45m
Deal found 31/8£463
Wed 9/909:45 -
Nonstop8h 40m
Deal found 29/8£571
Fri 18/912:15 -
Nonstop8h 40m
Deal found 2/9£577
How do most travelers feel about Finnair?
Cheapflights users who travel with Finnair (a popular airline from London to Chicago O'Hare Intl Airport) have rated them a 7.6/10. This rating comes from 1,429 reviews. If you are looking to travel LON-ORD, search your dates above.
Can I get a flight from London to Chicago O'Hare Intl Airport on Finnair for under £667?
8 Finnair flights from LON to ORD have recently been found on Cheapflights for under £667. Click here to find the best deals to Chicago O'Hare Intl Airport for your desired dates.
Finnair flights from London to O'Hare Intl in 2026
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 2 September 2026.
Which month is the cheapest to fly Economy class from London to Chicago O'Hare Intl Airport?
For Economy class flights, the cheapest month to fly this route is February. The most expensive months are March and August.
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 (5 on average). You will have fewer Finnair flight options on Monday, which is when the least amount of flights are scheduled (5 on average).
Rainfall in O'Hare Intl by month
Plan your trip to O'Hare Intl by taking into account the average rainfall totals 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
Plan your trip to O'Hare Intl by taking into account the average temperature totals 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.
LON-ORD
LHR-ORD
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.
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Fly from London 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 2 September 2026.
Browse through other Finnair flights departing from London. Flight routes are based on user searches made on Cheapflights and were last updated on 2 September 2026.
If O'Hare Intl is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on 2 September 2026.
Browse through some of the most popular routes that Finnair offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 2 September 2026.
Read reviews and see what other travellers are saying about their experiences with Finnair. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Finnair for your next flight. Reviews last updated 2 September 2026.
The flight from Helsinki to Toronto was very cramped. No leg space and no room to even walk. Very bad experience
8.0
Very Good|Jul 2026
Very limited food provided. Limited drinks, lights out for 10 of 12.30 flights. Very few staff.
2.0
Poor|Jun 2026
Lost our luggage and took two days to get it back. Ruined the trip.
10.0
Wonderful|Jun 2026
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
10.0
Wonderful|May 2026
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