Finnair flights from London to Chicago (LON - CHI)
LON — CHI
18 Oct — 25 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
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Cheapest Finnair flights from London to Chicago
Explore the most affordable Finnair flight options available from London to Chicago. Find the lowest fares with prices last updated on 18 September 2026.
Sat 31/1016:30 -
Nonstop8h 50m
Sat 7/1120:30 -
Nonstop7h 55m
Deal found 16/9£553
Tue 6/1012:15 -
Nonstop8h 45m
Tue 13/1020:50 -
Nonstop8h 00m
Deal found 17/9£568
Thu 29/1016:30 -
Nonstop8h 50m
Wed 11/1120:30 -
Nonstop7h 55m
Deal found 15/9£572
Best Finnair flights from London to Chicago
Discover carefully curated Finnair flight deals from London to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.
Mon 2/1112:35 -
Nonstop8h 55m
Mon 16/1116:31 -
1 stop23h 39m
Deal found 16/9£603
Tue 3/1107:30 -
2 stops21h 00m
Sat 14/1116:31 -
1 stop10h 44m
Deal found 15/9£609
Wed 4/1107:30 -
2 stops21h 00m
Tue 10/1116:31 -
1 stop10h 44m
Deal found 15/9£609
Direct Finnair flights from London to Chicago
Explore direct Finnair flight options from London to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2026.
Sat 31/1016:30 -
Nonstop8h 50m
Sat 7/1120:30 -
Nonstop7h 55m
Deal found 16/9£553
Tue 6/1012:15 -
Nonstop8h 45m
Tue 13/1020:50 -
Nonstop8h 00m
Deal found 17/9£568
Thu 29/1016:30 -
Nonstop8h 50m
Wed 11/1120:30 -
Nonstop7h 55m
Deal found 15/9£572
Last-minute Finnair flights from London to Chicago
Discover last-minute Finnair flight deals from London to Chicago. Data last updated 18 September 2026 and is based on user searches.
Sat 31/1016:30 -
Nonstop8h 50m
Sat 7/1120:30 -
Nonstop7h 55m
Deal found 16/9£553
Tue 6/1012:15 -
Nonstop8h 45m
Tue 13/1020:50 -
Nonstop8h 00m
Deal found 17/9£568
Thu 29/1016:30 -
Nonstop8h 50m
Wed 11/1120:30 -
Nonstop7h 55m
Deal found 15/9£572
One-way Finnair flights to Chicago
Search for one-way Finnair flight options to Chicago. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.
Mon 15/311:15 -
Nonstop8h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£411
Mon 9/1112:35 -
Nonstop8h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£417
Sun 6/1213:35 -
2 stops38h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£426
How do most travelers feel about Finnair?
Finnair has received a 7.6/10 rating from 1,431 Cheapflights user reviews. If you wish to plan your next trip from London to Chicago with Finnair, enter your preferred travel dates above!
Does Finnair service alternative airports for LON-CHI?
If you’re flying LON-CHI on Finnair and are looking for alternative airports to fly into or out of, you are in luck. When arriving in Chicago, most people land at Chicago O'Hare Intl, but that is not the only available airport that Finnair flies to. Many people choose to land at Chicago Midway depending on where there are traveling to in the area. If you are looking for alternative departure airport to London Heathrow, consider flying out of London Gatwick which also offers Finnair flights.
Can I get a flight from London to Chicago on Finnair for under £673?
There are 7 flights available on Finnair from London to Chicago for under £673. These prices can change based on many factors including date and time. To find LON-CHI flight prices for your dates, click here.
Find detailed information about Finnair flights from London to Chicago. Explore the options provided by Finnair to plan your journey from London to Chicago. Data last updated 18 September 2026.
Which month is the cheapest to fly Economy class from London to Chicago?
For Economy class flights, the cheapest month to fly this route is January. The most expensive months are July and August.
Weekly Finnair flight availability from London to Chicago
The most Finnair flights from LON to CHI are scheduled on a Wednesday (5 on average). You will have fewer Finnair flight options on Monday, which is when the least amount of flights are scheduled (3 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).
Best time to book a flight from London to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from London with our price prediction graph.
LON-CHI
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 Chicago on another airline
Consider alternative airlines that service the Chicago area. Flight routes are based on user searches made on Cheapflights and were last updated on 18 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 18 September 2026.
If Chicago 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 18 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 18 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 18 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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