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The cheapest time of year to fly to London Heathrow Airport from Chicago is February. Most expensive is July
Icelandair, Juneyao Airlines, and KLM are the most popular carriers operating from Chicago to London Heathrow Airport
0 days before
The cheapest time to buy a flight from Chicago to London Heathrow Airport is approximately 0 days to departure
When you’re planning your trip from Chicago to London, the most popular airport-to-airport route is Chicago O'Hare Intl Airport to London Heathrow Airport. When booking your trip to London, it is helpful to have an alternative airport to fly out of. The nearest airport to Chicago O'Hare Intl Airport is Chicago Midway Airport which is located in Chicago. The least expensive flight option from Chicago to London will typically be ORD — LHR during the month of August with an average price of $424 RT.
|Juneyao Airlines||PriceFrom $14||Free Cancellation||Rating|
|Scandinavian Airlines||PriceFrom $358||Free Cancellation||Rating|
Flight didn’t happen; it was cancelled. Chatdeal not taking responsibility to refund, even though they have my money.
1 / 10
|Icelandair||PriceFrom $371||Free Cancellation||Rating|
We paid extra to sit together, but when separated, attendants acted like there is nothing they could do about it. If the in-air service crew can’t fix it, then maybe not separating our seats in the first place would be appreciated. The crew was all very kind and professional though
1 / 10
|TAP AIR PORTUGAL||PriceFrom $374||Free Cancellation||Rating|
Uncomfortable seats, unfriendly crew, going up and down stairs, taking buses, all with hang luggage, not a nice experience, even flying business.
1 / 10
|Norwegian Air UK||PriceFrom $400||Free Cancellation||Rating|
|Air France||PriceFrom $457||Free Cancellation||Rating|
Waited 45 minutes for the pale to get cleaned up. Almost missed my next flight. My bags didn’t make it to my final destination.
1 / 10
|KLM||PriceFrom $462||Free Cancellation||Rating|
Voir avis précédent qui regroupe les deux vols
1 / 10
|Air Canada||PriceFrom $472||Free Cancellation||Rating|
Our bags were lost and Aegean airlines at Santorini airport were absolutely useless to help us get our bags back. Extremely unprofessional.
1 / 10
|Iberia||PriceFrom $486||Free Cancellation||Rating|
They lost our suitcase
1 / 10
|Lufthansa||PriceFrom $509||Free Cancellation||Rating|
The food choices and quality could be much better. It is not what it used to be.
1 / 10
SWISS operates around 14 flights from Chicago to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been $872, but momondo users have found SWISS deals from Chicago to London Heathrow Airport from as low as $632 round-trip. SWISS has been scored 8.4/10 in 138 reviews.
Aer Lingus (8.0/10 from 82 reviews) operates around 12 flights from Chicago to London Heathrow Airport in any given week. The average Aer Lingus airfare for this route is around $722, with deals from around $531 rare but found on momondo. Referenced prices are for round-trip Chicago to London Heathrow Airport flight searches in the last 72 hours.
Some of our partner airlines flying from Chicago to London Heathrow are adopting new policies due to the global impact of COVID-19. Some of the airlines that may be waiving their cancellation fees are British Airways, American Airlines, and Iberia. You can search for the full list of airlines like British Airways that are offering this flexibility.
There are 3933.5 mi between Chicago and London Heathrow. A reasonable flight in good conditions will take 7h 31m.
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Chicago.
Flights from Chicago to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to London.
If you are not ready to book a flight from Chicago to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.