ORD - LHR

C$ 376 Find Cheap Flights from Chicago to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Heathrow departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to London, as well as popular online travel agencies
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Cheap Flight Deals from Chicago to London (ORD-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Chicago to Heathrow

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Chicago to Heathrow.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
2:20 p.m. - 11:25 a.m.ORD-LHR
15h 05m1 stop
6:00 a.m. - 12:10 p.m.LHR-ORD
12h 10m1 stop
C$ 460SWISS
Find Deal
ven., 11 avr. - dim., 20 avr.
2:20 p.m. - 7:55 a.m.ORD-LHR
11h 35m1 stop
6:40 p.m. - 12:10 p.m.LHR-ORD
23h 30m1 stop
C$ 687SWISS
Find Deal
lun., 21 juil. - mar., 19 août
7:15 p.m. - 4:25 p.m.ORD-LHR
15h 10m2 stops
6:40 a.m. - 4:10 p.m.LHR-ORD
15h 30m1 stop
C$ 768Scandinavian Airlines
Find Deal
ven., 9 mai - lun., 12 mai
7:15 p.m. - 1:35 p.m.ORD-LHR
12h 20m1 stop
10:20 a.m. - 4:10 p.m.LHR-ORD
11h 50m1 stop
C$ 788Scandinavian Airlines
Find Deal
ven., 25 avr. - dim., 27 avr.
7:15 p.m. - 9:40 p.m.ORD-LHR
20h 25m1 stop
10:20 a.m. - 4:10 p.m.LHR-ORD
11h 50m1 stop
C$ 822Scandinavian Airlines
Find Deal
mar., 22 avr. - mar., 29 avr.
10:20 p.m. - 12:15 p.m.ORD-LHR
7h 55mdirect
7:30 a.m. - 5:50 p.m.LHR-ORD
16h 20m1 stop
C$ 844Finnair
Find Deal
mar., 22 avr. - mer., 30 avr.
10:30 p.m. - 12:15 p.m.ORD-LHR
7h 45mdirect
7:30 a.m. - 5:50 p.m.LHR-ORD
16h 20m1 stop
C$ 845Finnair
Find Deal
mar., 1 avr. - mer., 23 avr.
4:55 p.m. - 8:05 a.m.ORD-LHR
10h 10m1 stop
1:25 p.m. - 7:00 p.m.LHR-ORD
11h 35m1 stop
C$ 848Aer Lingus
Find Deal
mar., 18 mars - mar., 8 avr.
10:10 p.m. - 11:15 a.m.ORD-LHR
8h 05mdirect
8:55 a.m. - 1:55 p.m.LHR-ORD
34h 00m1 stop
C$ 871United Airlines
Find Deal
dim., 9 mars - lun., 17 mars
6:05 p.m. - 8:20 a.m.ORD-LHR
8h 15mdirect
8:45 a.m. - 12:10 p.m.LHR-ORD
33h 25m1 stop
C$ 875United Airlines
Find Deal
dim., 6 avr. - dim., 13 avr.

Flights from Chicago to Heathrow - Travel Insights & Trends

Get data-powered insights and trends into flights from Chicago to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chicago to London?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
For Chicago to London, Sunday is the cheapest day to fly on average and Friday is the most expensive. Flying from London back to Chicago, the best deals are generally found on Monday, with Wednesday being the most expensive.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Chicago O'Hare Intl Airport to London Heathrow Airport is October, where tickets cost C$ 950 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is C$ 1,557 and C$ 1,487 respectively.

Can I save money by flying with a layover from Chicago O'Hare Intl Airport to London Heathrow Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 2,596 on average.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Chicago O'Hare Intl Airport to London Heathrow Airport, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low season

February

High season

August

Cheapest flight

C$ 376
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Chicago to London

When to book flights from Chicago to Heathrow

Are your dates flexible? Find out the best times to travel from Chicago to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Chicago to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Chicago to Heathrow 
DinaFlew with United AirlinesJan 2025
Anticipate delays, prepare for long walks through Heathrow to baggage claim or for connections.
Verified travelerFlew with United AirlinesJul 2024
Even though you may have a delay or two the important part is that you arrive safely from one point to the next. I wish I could get some credit back since I paid for a nonstop flight and ended up having a connecting flight.
Verified travelerFlew with British AirwaysMay 2024
Make sure you get a airline that allows one check-in luggage and respects its customers.
AaronFlew with American AirlinesDec 2023
Find a flight where you are allowed to choose your seats before the day of boarding for anything international.

FAQs for booking Chicago to London flights

  • Can I get a nonstop flight from Chicago (ORD) to Heathrow (LHR)?

    Yes. British Airways, Finnair, and American Airlines operate several nonstop flights between ORD and LHR per day. Generally, flights tend to depart either around 8 am or around 5 pm. KLM Royal Dutch Airlines, Delta, United, American, and Air Canada operate flights with two stops, with layovers in many cities, including Montreal (YUL), Detroit (DTW), Minneapolis (MSP), and Dublin (DUB).

  • How do I get from LHR to London city center on public transportation?

    To get to London from the airport, go to terminals 1, 2, or 3’s train station. From there, you can catch a train to Paddington Station in London, a primary London station where you can catch other trains, the subway, buses, or taxis. You can also catch a bus from Heathrow’s Central Bus Station. At Heathrow, terminals 2 and 3 have subway stations that can get you to the city center of London. Shuttles and taxis are options as well, but more expensive than a train, the subway, or a bus.

  • If I have an early flight from ORD, are there hotels near or in the airport where I could stay the night before I fly?

    The luxurious Hilton Chicago O’Hare Airport is a hotel that is actually inside ORD, in Terminal 2. Along with their various king-size room offerings, this hotel has allergy-free rooms, accessible rooms, business doubles with two double beds, and family suites. For a surcharge, the hotel offers public internet access. This pet-friendly hotel has a business center, a fitness center, and an outdoor pool.

  • Does ORD offer any designated lactation areas for nursing moms who might want some privacy and cleanliness?

    Yes. ORD provides 14 different areas where nursing mothers can breastfeed or pump in hygienic privacy. ORD has 6 Mothers Rooms, clean quiet rooms that have comfortable seating and a sink. There is one Mothers Room in Terminal 1, 2, and 5 each. There are two Mothers Rooms in Terminal 3 and in the Multi-Modal Facility, a combination of a parking garage and the rental car center. ORD also offers Mamava pods, free-standing 4 X 8 cabins that give nursing moms some sanitized privacy. There are two pods in terminals 1 and 2, and four pods in Terminal 3.

  • What is the cheapest flight from Chicago O'Hare Intl Airport to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to London Heathrow Airport was C$ 265 for a one-way ticket and C$ 324 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to London?

    All the following airlines offer inflight Wi-Fi service on the Chicago to London flight route: Iberia, British Airways, Finnair, American Airlines, Alaska Airlines, and Lufthansa.

  • Which aircraft models fly most regularly from Chicago to London?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Chicago to London flight route.

  • Which airline alliances offer flights from Chicago to London?

    oneworld, and Star Alliance are the airline alliances operating flights between Chicago and London, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Chicago to London?

    There are direct flights from Chicago to London on a daily basis.

  • How does KAYAK find such low prices on flights from Chicago to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Chicago is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 841 or less round-trip.
  • Chicago O’Hare International Airport (ORD) is a hub for United Airlines and American Airlines. London Heathrow (LHR) is a hub for British Airways.
  • In Terminal 2, just past the security checkpoint, ORD provides a Family Lounge to make waiting for a plane easier for those traveling with kids. This vibrant, colorful space provides seating, places to park strollers, and outlets to charge your devices. Sometimes, especially during the holidays, they might even have live entertainment, including artists who will draw your picture and musicians.
  • You can use Travelex to exchange currency at Heathrow. Order online before you leave and collect your money at a Travelex location in Heathrow, either post-security in Terminal 5 or pre-security in Terminal 2.
  • ORD features bathrooms that are designated all-gender, and these restrooms can be found throughout the airport in all terminals and in the Multi-Modal Facility.
  • If you have time to grab a bite to eat before you depart from ORD, you could eat at a restaurant where you can watch the planes land and take off: the food court and Berghoff Café in Terminal 1 and Chili’s Too in Terminal 3.
See more tips

Prefer to fly direct from Chicago to London?

Find which airlines fly direct from Chicago O'Hare Intl Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to London Heathrow

Monday

Aer Lingus,Air Canada,Alaska Airlines, +13 more

Aer Lingus,Air Canada, +14 more

Tuesday

Aer Lingus,Air Canada,Alaska Airlines, +13 more

Aer Lingus,Air Canada, +14 more

Wednesday

Aer Lingus,Air Canada,Alaska Airlines, +13 more

Aer Lingus,Air Canada, +14 more

Thursday

Aer Lingus,Air Canada,Alaska Airlines, +13 more

Aer Lingus,Air Canada, +14 more

Friday

Aer Lingus,Air Canada,Alaska Airlines, +13 more

Aer Lingus,Air Canada, +14 more

Saturday

Aer Lingus,Air Canada,Alaska Airlines, +13 more

Aer Lingus,Air Canada, +14 more

Sunday

Aer Lingus,Air Canada,Alaska Airlines, +13 more

Aer Lingus,Air Canada, +14 more

See more nonstop flights

Direct returns

London Heathrow to Chicago O'Hare Intl

Monday

Aer Lingus,Air Canada,Alaska Airlines, +12 more

Aer Lingus,Air Canada, +13 more

Tuesday

Aer Lingus,Air Canada,Alaska Airlines, +12 more

Aer Lingus,Air Canada, +13 more

Wednesday

Aer Lingus,Air Canada,Alaska Airlines, +12 more

Aer Lingus,Air Canada, +13 more

Thursday

Aer Lingus,Air Canada,Alaska Airlines, +12 more

Aer Lingus,Air Canada, +13 more

Friday

Aer Lingus,Air Canada,Alaska Airlines, +12 more

Aer Lingus,Air Canada, +13 more

Saturday

Aer Lingus,Air Canada,Alaska Airlines, +12 more

Aer Lingus,Air Canada, +13 more

Sunday

Aer Lingus,Air Canada,Alaska Airlines, +12 more

Aer Lingus,Air Canada, +13 more

See more nonstop flights
See more nonstop flights

Travelling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Hounslow
Brighton
Hayes
Croydon
Slough
Wembley
Milton Keynes
Canterbury
Borehamwood
Chipping Norton
Poole
Stratford-upon-Avon
Guildford
Horley
Southall
Dover
Salisbury
Ilford
Eastbourne
Moreton-in-Marsh

Everything you need to know for your flight from Chicago to Heathrow

Information on your arrival and departure airports

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