Finnair flights from London Heathrow Airport to Chicago O'Hare Intl Airport (LHR - ORD)
LHR — ORD
19 Oct — 26 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
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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 19 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 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 19 September 2026.
Mon 2/1112:35 -
Nonstop8h 55m
Mon 16/1116:31 -
1 stop23h 39m
Deal found 18/9£598
Sun 6/1210:20 -
2 stops18h 10m
Tue 12/116:29 -
1 stop23h 41m
Deal found 16/9£609
Tue 3/1107:30 -
2 stops21h 00m
Sat 14/1116:31 -
1 stop10h 44m
Deal found 15/9£609
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 19 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 Heathrow to O'Hare Intl
Discover last-minute Finnair flight deals from Heathrow to O'Hare Intl. Data last updated 19 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 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 19 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?
The average rating from 1,431 Finnair reviews by Cheapflights users is 7.6 (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.
Can I get a flight from London Heathrow Airport to Chicago O'Hare Intl Airport on Finnair for under £673?
London Heathrow Airport to Chicago O'Hare Intl Airport flights on Finnair are currently available under £673. 9 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.
Finnair flights from Heathrow to O'Hare Intl in 2026
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 19 September 2026.
Which month is the cheapest to fly Economy class from London Heathrow Airport to Chicago O'Hare Intl Airport?
For Economy class flights, the cheapest month to fly this route is February. The most expensive months are August and July.
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 Friday (5 on average). You will have fewer Finnair flight options on Tuesday, which is when the least amount of flights are scheduled (3 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 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.
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 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 19 September 2026.
Browse through other Finnair flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 19 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 19 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 19 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 19 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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