AED 2,566 Cheap flights from Chicago to London Heathrow

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Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Chicago to London Heathrow

Looking for a cheap last-minute deal or the best round-trip flight from Chicago to London Heathrow Airport? If you want to travel next month, round-trip fares start from AED 2,792. Find the lowest prices on one-way and round-trip tickets right here.

London.AED 1,249 per passenger.Departing Mon, May 4.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Chicago O'Hare International on Mon, May 4, arriving in London Heathrow.Price includes taxes and charges.From AED 1,249, select.

London.AED 1,290 per passenger.Departing Sun, Jun 7.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departing from Chicago Rockford on Sun, Jun 7, arriving in London Heathrow.Price includes taxes and charges.From AED 1,290, select.

London.AED 1,296 per passenger.Departing Mon, Apr 27.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departing from Chicago O'Hare International on Mon, Apr 27, arriving in London Heathrow.Price includes taxes and charges.From AED 1,296, select.

London.AED 1,348 per passenger.Departing Mon, Nov 9.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departing from Chicago O'Hare International on Mon, Nov 9, arriving in London Heathrow.Price includes taxes and charges.From AED 1,348, select.

London.AED 1,361 per passenger.Departing Wed, Dec 9.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departing from Chicago O'Hare International on Wed, Dec 9, arriving in London Heathrow.Price includes taxes and charges.From AED 1,361, select.

London.AED 1,374 per passenger.Departing Sun, Aug 30.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departing from Chicago Rockford on Sun, Aug 30, arriving in London Heathrow.Price includes taxes and charges.From AED 1,374, select.

London.AED 1,393 per passenger.Departing Sat, Oct 3.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departing from Chicago O'Hare International on Sat, Oct 3, arriving in London Heathrow.Price includes taxes and charges.From AED 1,393, select.

London.AED 1,404 per passenger.Departing Tue, Sep 8.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departing from Chicago O'Hare International on Tue, Sep 8, arriving in London Heathrow.Price includes taxes and charges.From AED 1,404, select.

London.AED 1,489 per passenger.Departing Wed, Mar 3.One-way flight with Iberia.Outbound indirect flight with Iberia, departing from Chicago O'Hare International on Wed, Mar 3, arriving in London Heathrow.Price includes taxes and charges.From AED 1,489, select.

London.AED 1,501 per passenger.Departing Wed, Feb 3.One-way flight with Iberia.Outbound indirect flight with Iberia, departing from Chicago O'Hare International on Wed, Feb 3, arriving in London Heathrow.Price includes taxes and charges.From AED 1,501, select.

London.AED 1,524 per passenger.Departing Wed, Jul 22.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departing from Chicago O'Hare International on Wed, Jul 22, arriving in London Heathrow.Price includes taxes and charges.From AED 1,524, select.

London.AED 1,682 per passenger.Departing Fri, Jan 15.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Chicago O'Hare International on Fri, Jan 15, arriving in London Heathrow.Price includes taxes and charges.From AED 1,682, select.

London.AED 1,847 per passenger.Departing Wed, Apr 29.One-way flight with Finnair.Outbound direct flight with Finnair departing from Chicago O'Hare International on Wed, Apr 29, arriving in London Heathrow.Price includes taxes and charges.From AED 1,847, select.

London.AED 1,847 per passenger.Departing Sun, May 10.One-way flight with Finnair.Outbound direct flight with Finnair departing from Chicago O'Hare International on Sun, May 10, arriving in London Heathrow.Price includes taxes and charges.From AED 1,847, select.

London.AED 1,855 per passenger.Departing Wed, Apr 7.One-way flight with SWISS.Outbound indirect flight with SWISS, departing from Chicago O'Hare International on Wed, Apr 7, arriving in London Heathrow.Price includes taxes and charges.From AED 1,855, select.

London.AED 1,856 per passenger.Departing Sun, Dec 6.One-way flight with Iberia.Outbound direct flight with Iberia departing from Chicago O'Hare International on Sun, Dec 6, arriving in London Heathrow.Price includes taxes and charges.From AED 1,856, select.

Find the cheapest month to fly from Chicago to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to London Heathrow flights are currently cheapest in May.

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Direct flights from Chicago to London Heathrow

Chicago to London Heathrow: Alternative routes

Compare routes from Chicago to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Chicago to London: Flight information

The things to know before you go.

Cheapest flight found	AED 1,249
Cheapest month to fly	May
Average flight time	7 hrs, 56 mins
Most popular airline	American Airlines
Average flights per week	470

Finding cheap flights from Chicago to London Heathrow: Frequently asked questions

How much are round-trip flights from Chicago to London Heathrow?

The best price we found for a round-trip flight from Chicago to London Heathrow is AED 2,566. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Chicago to London Heathrow?

7 hours and 56 minutes is the average flight time from Chicago to London Heathrow.

Which airlines fly direct from Chicago to London Heathrow?

American Airlines, Alaska Airlines and British Airways fly direct from Chicago to London Heathrow.

How many flights are there a week from Chicago to London Heathrow?

There are 470 flights per week flying from Chicago to London Heathrow, as of April 2026.

When is the cheapest time to fly from Chicago to London Heathrow?

The cheapest month to fly from Chicago to London Heathrow is usually January.

Which upcoming date is cheapest to fly from Chicago to London Heathrow Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to London Heathrow Airport on Friday, January 15, 2027.

Can I get a direct flight from Chicago to London Heathrow Airport?

Yes – the average flight time is 7 hours and 56 minutes.

How can I find the best flight deal to London Heathrow?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

Traveling from Chicago to London Heathrow Airport (LHR): What you need to know

Planning your trip begins with working out where you'll leave from in Chicago. Chicago O'Hare International Airport (ORD) is the city's main base, so explore your options for reserving a flight from Chicago to London Heathrow Airport (LHR) jetting off from here.
The average time for a direct Chicago to London Heathrow Airport flight is 8 hours.
London is six hours ahead of Chicago. London Heathrow Airport is located in London, which runs on the UTC+0 timezone.
The busiest route is Chicago O'Hare International Airport (ORD) to London Heathrow Airport (LHR). There are 57 direct services each week.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Get to the airport on time to board your flight from Chicago to LHR.
With more people on the move during peak months like July, be at your terminal even earlier. Two hours for domestic flights and as much as four for international journeys will help you stay ahead of the crowds. Remember things also get busy during major holidays like Christmas and local events or festivals.

Airports in Chicago

Chicago O'Hare International Airport (ORD)

You can find a direct flight from Chicago to London Heathrow Airport (LHR) departing from Chicago O'Hare International Airport (ORD).
You'll have your pick of carriers that operate direct flights from Chicago to London Heathrow Airport departing from ORD. Book your journey with one of these:
United is the most frequently chosen airline for flights from ORD to LHR.
The carrier with the best on-time arrival rate on this route is Aer Lingus.
A stopover is the perfect opportunity to break up your trip and maybe even explore another city. When browsing cheap flights from Chicago to LHR departing from Chicago O'Hare International Airport (ORD), deselect the 'Direct flights only' box to find out where you can stop along the way. Some popular options include:
- Toronto Pearson International Airport (YYZ)
- Detroit Metropolitan Wayne County Airport (DTW)
- Dublin Airport (DUB)
Located around 27 kilometers from central Chicago, ORD can be reached in about 30 minutes by car (depending on traffic). The journey by public transport takes roughly 45 minutes.
Searching for a convenient hotel near Chicago O'Hare International Airport? If you've booked an early flight from Chicago to London Heathrow Airport, these stays will put you conveniently close to check-in:
70% of flights that leave from Chicago O'Hare International Airport touch down at their destination on schedule.
ORD is located at 10000 West O'Hare.

Chicago Midway International Airport (MDW)

Split up your flight from Chicago to London Heathrow Airport with a stop so you can recharge or tick another place off your list. Popular stopovers between Chicago Midway International Airport and LHR include:
- Boston Logan International Airport (BOS)
- Philadelphia International Airport (PHL)
- Cincinnati/Northern Kentucky International Airport (CVG)
MDW is around 16 kilometers from central Chicago. It'll take 25 minutes or so to get to the airport by car from the city center. Public transport takes roughly 30 minutes.
Flying off with the first light? You might like to check in to one of these hotels near Chicago Midway International Airport the day before your Chicago to LHR flight:
Chicago Midway International Airport has an on-time performance of 76%. This figure provides insight into how frequently flights that leave from this airport land at their destination on time.
The address for MDW is 5700 South Cicero.

Chicago Rockford International Airport (RFD)

Choosing a plane ticket from Chicago to London Heathrow Airport (LHR) with one or more stops can offer you a bigger choice of departure times and access to lower fares. When flying from Chicago Rockford International Airport (RFD), here are a few places you can detour to on the way to LHR:
- Los Angeles International Airport (LAX)
- Las Vegas Harry Reid International Airport (LAS)
- Nashville International Airport (BNA)
The trip to RFD from central Chicago is around 2 hours by public transport. If you prefer to travel by car, it'll take you roughly 1 hour 40 minutes to cover the 145 kilometers or so.
Skip the rush on your departure day — stay near Chicago Rockford International Airport and know you'll reach your boarding gate with time to spare. Check in to one of these hotels the day before if you've booked an early Chicago to London Heathrow Airport flight:
The on-time performance rate of RFD is 71%. In other words, that's how often flights that depart this airport arrive at their destination as planned.
The street address of Chicago Rockford International Airport is 2 Airport Cir.

About London Heathrow Airport (LHR)

Have a late flight from Chicago to London Heathrow Airport? Don't let it steal your sleep. Stay at one of these hotels near LHR and fast-forward to bedtime:
Booking your vehicle around one week in advance of your Chicago to London Heathrow Airport flight can help you find the best deal.

Getting from London Heathrow Airport (LHR) to central London

London Heathrow Airport is around 24 kilometers from central London. It takes around 45 minutes or so to get to the city by car.
If you're traveling by public transport, expect a journey time of roughly 25 minutes.

How to find the cheapest flights from Chicago to London Heathrow Airport (LHR)

The cheapest price we've found for a one-way ticket from Chicago to London Heathrow Airport is AED 1,249. For a return flight on this route, the best price is AED 2,566. Depending on the availability when you book, these fares can change.
Book six months before your departure date. Pricing trends show that this is the ideal window for finding cheap flights from Chicago to LHR.
The best month for scoring cheap Chicago to London Heathrow Airport tickets is November. Use the 'Whole month' tool to compare prices, then select the dates with the lowest fares.
Save time looking for cheap plane tickets from Chicago to LHR by creating a Price Alert. We'll send you an email or push notification on the app when a lower fare becomes available.
Tailor your trip using filters. Choose your ideal arrival and departure times, total journey duration and airlines. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Chicago to London Heathrow Airport.

The best time to fly from Chicago to London Heathrow Airport (LHR)

Picture the kind of break you want when deciding when to fly. January is the quietest month to visit London. July is when most people book flights from Chicago to London Heathrow Airport (LHR), which may be perfect if you're chasing more excitement.
Book a Chicago to LHR plane ticket departing in July if you want to experience the city during its warmest month. Expect temperatures in London to range from 11ºC (52ºF) to 26ºC (79ºF).
If you want to travel in cooler conditions, search for a cheap ticket from Chicago to London Heathrow Airport in January when temperatures are between 0ºC (32ºF) and 9ºC (48ºF).

More about London

When it comes to looking for somewhere to rest your head, you'll find the most popular stays in London right here. Check out these options once you've booked your flight from Chicago to London Heathrow Airport:
There are so many things to explore in this city, it can be tricky to know where to start. The British Museum, Westminster Abbey and Big Ben are highlights which should feature on any well-planned London itinerary.

Explore more of the United Kingdom

London will leave a lasting impression, but there are so many other parts of the United Kingdom just waiting to be discovered. Around 257 kilometers northwest of London, a visit to Manchester will fill your itinerary to the brim. Start with leading sights like Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.
Birmingham is another essential stop in the United Kingdom and is around 153 kilometers northwest of London. No trip is complete without experiencing Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.