Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £250
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Chicago O'Hare Intl Airport departing on 30/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from London Heathrow Airport to Chicago O'Hare Intl Airport
Our best United Airlines deals on London Heathrow Airport to Chicago O'Hare Intl Airport flight tickets
British Airways flights from London Heathrow Airport to Chicago O'Hare Intl Airport
Our best British Airways deals on London Heathrow Airport to Chicago O'Hare Intl Airport flight tickets
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How to get the cheapest flight ticket from London Heathrow Airport to Chicago O'Hare Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Chicago O'Hare Intl Airport?
The cheapest month to fly to Chicago O'Hare Intl Airport from London Heathrow Airport is in February. Flight prices, which tend to average around £467, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Chicago O'Hare Intl Airport from London Heathrow Airport during April instead. Flights to Chicago O'Hare Intl Airport in April, while not as cheap as those in February, still average around £523.
What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?
The cheapest day to depart from London Heathrow Airport to Chicago O'Hare Intl Airport is on a Wednesday. Travellers who choose to depart for Chicago O'Hare Intl Airport on a Wednesday will often find tickets for as low as £636. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Chicago O'Hare Intl Airport on Sunday is £692.
What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?
The cheapest time of day to fly to Chicago O'Hare Intl Airport is in the evening when flights can be purchased for as low as £589. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the afternoon when prices are around £674.
What is the cheapest London Heathrow to Chicago O'Hare Intl flight route?
Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - Chicago O'Hare Intl flight prices
How far in advance should I book a flight to Chicago O'Hare Intl Airport?
You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from London Heathrow Airport when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around £574 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from London Heathrow Airport for as low as £559 on momondo.
What cabin class options are available on London Heathrow to Chicago O'Hare Intl flights?
There are 4 cabin classes available to choose from on London Heathrow to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London Heathrow to Chicago O'Hare Intl?
WestJet, TAP AIR PORTUGAL, and Icelandair are the most popular carriers operating from London Heathrow to Chicago O'Hare Intl
Which airlines fly to Chicago O'Hare Intl Airport?
British Airways, Finnair and Lufthansa are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 56% of people opting to fly with this airline when travelling to Chicago O'Hare Intl Airport. Keep in mind that there are 15 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to Chicago O'Hare Intl Airport on average per day?
The number of flights available between London Heathrow Airport and Chicago O'Hare Intl Airport is 29 per day as of March 2025. The most frequent departure time is 11:00, with 51% of daily flights leaving at midday.
How many flights depart from London Heathrow Airport to Chicago O'Hare Intl Airport on average per week?
209 flights are operational weekly from London Heathrow Airport to Chicago O'Hare Intl Airport as of March 2025. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.
When to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport
Cheap London Heathrow Airport to Chicago O'Hare Intl Airport (LHR to ORD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Chicago O'Hare Intl Airport
How far is London Heathrow to Chicago O'Hare Intl by plane?
The distance between London Heathrow and Chicago O'Hare Intl is about 3939.2 mi. Flights usually cover this in 8h 25m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
Prices for flights from London Heathrow Airport to Chicago O'Hare Intl Airport were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
The number of operators available for flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 15 as of March 2025.
How old do you have to be to fly from London Heathrow Airport to Chicago O'Hare Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Chicago O'Hare Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Chicago O'Hare Intl Airport is Boeing 767-300, representing 29.09% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 21.90%, Boeing 777 at 19.11%, and Airbus A350-900 at 6.92%.
What is the most popular airline from London Heathrow Airport to Chicago O'Hare Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London Heathrow Airport to Chicago O'Hare Intl Airport is British Airways (44% of total bookings). The next most popular airlines are Finnair (14%), Lufthansa (11%), and Aer Lingus (9%).
Best airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport
Compare and see reviews for airlines that fly from London Heathrow Airport to Chicago O'Hare Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £360 | Free Cancellation | Rating 7.0 474 reviews | |||
| PriceFrom £368 | Free Cancellation | Rating 7.3 1,325 reviews | |||
| PriceFrom £382 | Free Cancellation | Rating 7.1 1,825 reviews | |||
| PriceFrom £423 | Free Cancellation | Rating 7.5 769 reviews | |||
| PriceFrom £425 | Free Cancellation | Rating 6.7 6,952 reviews | |||
| PriceFrom £425 | Free Cancellation | Rating 7.4 8,603 reviews | |||
| PriceFrom £429 | Free Cancellation | Rating 7.4 634 reviews | |||
| PriceFrom £434 | Free Cancellation | Rating 6.6 6,712 reviews | |||
| PriceFrom £438 | Free Cancellation | Rating 7.3 344 reviews | |||
| PriceFrom £449 | Free Cancellation | Rating 7.0 1,062 reviews |
Finnair Flights From London Heathrow Airport to Chicago O'Hare Intl Airport
Finnair flight deals from London Heathrow Airport to Chicago O'Hare Intl Airport start from £612 round-trip. Over the 23 Finnair flights for this route in a normal week, average airfare is usually £772 round-trip - but some users have found much cheaper deals with momondo.
Austrian Airlines Flights From London Heathrow Airport to Chicago O'Hare Intl Airport
Another popular option for London Heathrow Airport to Chicago O'Hare Intl Airport flights is Austrian Airlines (7.5/10, 769 ratings). Austrian Airlines flies from London Heathrow Airport to Chicago O'Hare Intl Airport around 11 times per week, with deals starting from £546 round-trip and rising to an average price of around £748.
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Why should I use momondo to find a flight deal from London to Chicago?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Chicago. momondo saves you time and could save you money on your trip.
Can I find flights from London to Chicago with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Chicago from London with this policy.
How can momondo help me find flights from London to Chicago?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from London.
I’m not ready to book a flight from London to Chicago right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from London and alert you when they change.