This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LON
16 Oct — 23 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago to London are usually found in February or January, booked 33 days in advance, depart on a Monday or Wednesday and return on a Wednesday
Cheap flight deals from Chicago to London
Enter your travel dates to find the best prices.
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Cheapest flights from Chicago to London
Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.
Sun 13/1218:30 -
1 stop19h 00m
Sun 20/1220:35 -
1 stop26h 45m
Deal found 13/9£485
Sun 20/919:05 -
Nonstop8h 00m
Tue 29/908:45 -
1 stop14h 05m
Deal found 12/9£537
Mon 2/1115:55 -
2 stops23h 05m
Wed 18/1116:35 -
3 stops31h 45m
Deal found 11/9£537
Wed 28/1010:57 -
2 stops15h 13m
Tue 10/1109:00 -
2 stops16h 58m
Deal found 11/9£538
Mon 21/915:45 -
1 stop15h 00m
Tue 29/909:40 -
1 stop15h 35m
Deal found 14/9£538
Wed 30/919:05 -
1 stop16h 45m
Tue 6/1009:25 -
1 stop33h 10m
Deal found 12/9£538
Mon 21/915:45 -
1 stop10h 05m
Tue 29/911:35 -
1 stop13h 40m
Deal found 14/9£538
Mon 28/921:00 -
1 stop12h 00m
Sun 4/1008:50 -
1 stop11h 10m
Deal found 11/9£539
Wed 30/911:05 -
1 stop13h 25m
Mon 5/1018:40 -
1 stop23h 55m
Deal found 11/9£539
Mon 26/1010:15 -
2 stops22h 30m
Mon 2/1116:20 -
2 stops32h 05m
Deal found 11/9£539
Tue 3/1107:05 -
2 stops25h 20m
Sun 8/1108:30 -
2 stops17h 22m
Deal found 11/9£539
Thu 5/1120:05 -
1 stop10h 00m
Sun 15/1112:25 -
1 stop11h 55m
Deal found 11/9£539
Best flights from Chicago to London
Discover carefully curated flight deals from Chicago to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.
Fri 13/1119:15 -
2 stops15h 10m
Sun 15/1106:40 -
1 stop16h 05m
Deal found 12/9£542
Tue 29/917:50 -
1 stop13h 15m
Wed 7/1009:55 -
2 stops17h 36m
Deal found 11/9£548
Fri 16/1020:50 -
Nonstop8h 00m
Fri 23/1007:30 -
1 stop16h 20m
Deal found 14/9£558
Wed 24/206:00 -
2 stops21h 00m
Tue 2/310:00 -
1 stop12h 15m
Deal found 12/9£562
Mon 2/1118:30 -
2 stops20h 35m
Thu 5/1121:45 -
2 stops25h 35m
Deal found 15/9£576
Sun 11/1018:35 -
Nonstop8h 25m
Sat 17/1016:25 -
1 stop26h 10m
Deal found 15/9£578
Fri 15/117:10 -
Nonstop7h 45m
Tue 2/211:00 -
Nonstop8h 45m
Deal found 15/9£586
Tue 17/1120:15 -
1 stop38h 05m
Tue 1/1217:20 -
1 stop31h 00m
Deal found 14/9£619
Sun 27/918:00 -
1 stop33h 45m
Tue 29/921:15 -
2 stops24h 45m
Deal found 14/9£693
Fri 13/1112:30 -
2 stops13h 40m
Sun 15/1120:05 -
2 stops26h 13m
Deal found 14/9£803
Wed 28/1022:35 -
2 stops14h 55m
Mon 2/1109:15 -
2 stops15h 00m
Deal found 11/9£870
Mon 2/1113:27 -
2 stops13h 33m
Wed 11/1110:00 -
2 stops18h 54m
Deal found 12/9£551
Tue 13/1016:15 -
1 stop21h 30m
Wed 28/1008:40 -
1 stop11h 45m
Deal found 15/9£574
Tue 27/1021:05 -
2 stops17h 35m
Wed 4/1119:50 -
2 stops24h 20m
Deal found 14/9£576
Thu 10/1215:45 -
Nonstop8h 10m
Wed 16/1213:35 -
Nonstop9h 20m
Deal found 12/9£579
Wed 30/913:19 -
1 stop11h 51m
Tue 6/1015:15 -
1 stop13h 18m
Deal found 14/9£553
Mon 12/1020:10 -
1 stop38h 40m
Thu 29/1017:20 -
1 stop22h 40m
Deal found 11/9£619
Wed 28/1022:50 -
Nonstop8h 10m
Mon 2/1107:50 -
Nonstop9h 05m
Deal found 13/9£579
Wed 14/1010:24 -
2 stops16h 56m
Wed 28/1007:05 -
2 stops15h 40m
Deal found 13/9£642
Wed 18/1113:31 -
1 stop12h 14m
Mon 23/1106:30 -
2 stops15h 48m
Deal found 15/9£584
Wed 25/1117:40 -
1 stop14h 05m
Wed 9/1221:45 -
2 stops25h 35m
Deal found 14/9£596
Tue 27/1013:27 -
2 stops21h 18m
Tue 3/1110:00 -
2 stops18h 33m
Deal found 12/9£562
Mon 28/913:00 -
1 stop11h 25m
Mon 5/1006:15 -
2 stops15h 56m
Deal found 14/9£585
Sat 16/115:45 -
Nonstop8h 10m
Thu 28/107:40 -
Nonstop9h 05m
Deal found 15/9£586
Fri 9/1020:10 -
1 stop31h 45m
Thu 15/1017:35 -
1 stop22h 05m
Deal found 11/9£649
Fri 16/1011:45 -
2 stops14h 10m
Fri 23/1009:40 -
2 stops34h 55m
Deal found 16/9£604
Wed 9/1213:02 -
1 stop12h 48m
Sun 13/1206:20 -
2 stops17h 41m
Deal found 13/9£585
Wed 17/218:10 -
2 stops16h 25m
Wed 24/208:40 -
1 stop11h 45m
Deal found 12/9£586
Wed 10/220:15 -
1 stop31h 40m
Mon 15/210:55 -
1 stop37h 25m
Deal found 11/9£649
Fri 18/914:20 -
2 stops25h 25m
Tue 22/906:30 -
2 stops19h 42m
Deal found 12/9£604
Direct flights from Chicago to London
Explore direct flight options from Chicago to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2026.
Tue 27/1022:50 -
Nonstop7h 45m
Tue 3/1112:35 -
Nonstop8h 55m
Deal found 12/9£537
Tue 10/1117:10 -
Nonstop7h 45m
Thu 19/1111:00 -
Nonstop8h 45m
Deal found 12/9£541
Tue 29/916:25 -
Nonstop8h 20m
Tue 6/1008:00 -
Nonstop9h 10m
Deal found 14/9£542
Tue 3/1117:45 -
Nonstop8h 10m
Fri 20/1113:35 -
Nonstop9h 20m
Deal found 11/9£543
Tue 12/117:10 -
Nonstop7h 45m
Tue 19/111:00 -
Nonstop8h 45m
Deal found 13/9£546
Wed 25/1121:50 -
Nonstop7h 45m
Tue 1/1211:00 -
Nonstop8h 45m
Deal found 14/9£548
Wed 30/917:00 -
Nonstop7h 50m
Tue 2/215:40 -
Nonstop9h 05m
Deal found 14/9£549
Sun 10/117:10 -
Nonstop7h 45m
Thu 4/211:00 -
Nonstop8h 45m
Deal found 11/9£550
Wed 28/1021:25 -
Nonstop8h 00m
Mon 2/1116:30 -
Nonstop9h 00m
Deal found 13/9£553
Wed 30/920:50 -
Nonstop8h 00m
Mon 5/1012:15 -
Nonstop8h 45m
Deal found 11/9£553
Thu 1/1020:50 -
Nonstop8h 00m
Tue 6/1009:45 -
Nonstop8h 45m
Deal found 14/9£556
Wed 25/1121:50 -
Nonstop7h 45m
Wed 2/1211:00 -
Nonstop8h 45m
Deal found 15/9£557
Last-minute flights from Chicago to London
Discover last-minute flight deals from Chicago to London. Data last updated 16 September 2026 and is based on user searches.
Sun 20/919:05 -
Nonstop8h 00m
Tue 29/908:45 -
1 stop14h 05m
Deal found 12/9£537
Sun 20/915:45 -
2 stops14h 40m
Tue 29/907:00 -
2 stops19h 12m
Deal found 11/9£541
Mon 21/915:45 -
1 stop15h 00m
Tue 29/909:40 -
1 stop15h 35m
Deal found 14/9£538
Mon 21/915:45 -
1 stop10h 05m
Tue 29/911:35 -
1 stop13h 40m
Deal found 14/9£538
Mon 28/921:00 -
1 stop12h 00m
Sun 4/1008:50 -
1 stop11h 10m
Deal found 11/9£539
Mon 28/913:55 -
1 stop11h 15m
Tue 6/1008:40 -
1 stop11h 35m
Deal found 14/9£541
Wed 30/919:05 -
1 stop16h 45m
Tue 6/1009:25 -
1 stop33h 10m
Deal found 12/9£538
Wed 30/911:05 -
1 stop13h 25m
Mon 5/1018:40 -
1 stop23h 55m
Deal found 11/9£539
Wed 30/914:20 -
1 stop11h 35m
Sat 30/109:00 -
1 stop13h 15m
Deal found 13/9£540
Fri 9/1019:05 -
1 stop16h 45m
Fri 16/1009:25 -
1 stop12h 30m
Deal found 13/9£540
Mon 26/1010:15 -
2 stops22h 30m
Mon 2/1116:20 -
2 stops32h 05m
Deal found 11/9£539
Wed 28/1015:45 -
1 stop10h 25m
Tue 3/1109:00 -
2 stops16h 05m
Deal found 11/9£538
One-way flights from Chicago to London
Search for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.
Thu 3/1214:04 -
2 stops37h 56m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£223
Thu 3/1221:21 -
2 stops30h 39m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£223
Tue 27/1019:30 -
1 stop10h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 16/9£225
Sun 15/1118:30 -
1 stop10h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£225
Sat 14/1118:30 -
1 stop19h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£225
Sat 14/1118:30 -
1 stop10h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£225
Thu 1/1019:25 -
2 stops23h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£226
Tue 20/1019:25 -
3 stops20h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£228
Tue 20/1019:25 -
3 stops19h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£228
Sun 18/1019:25 -
1 stop10h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£230
Sun 18/1019:25 -
1 stop13h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£230
Tue 20/1019:25 -
2 stops14h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/9£232
Find flight deals from Chicago to London
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 September 2026.
Customise your flight search to find flights from Chicago to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 16 September 2026.
Use the filters below to find and compare flights from Chicago to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Tue 29/12
18:30-10:55
1 stop10h 25m
London Gatwick
Wed 31/12
00:00-17:00
Nonstop0h 00m
£239
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Wed 7/10
19:25-22:15
2 stops20h 50m
London Luton
Wed 31/12
00:00-17:00
Nonstop0h 00m
£240
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Mon 26/10
19:30-23:35
2 stops23h 05m
London Stansted
Wed 31/12
00:00-17:00
Nonstop0h 00m
£240
Fastest return journey
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Mon 15/3
22:50-11:35
Nonstop7h 45m
London Heathrow
Wed 31/12
00:00-17:00
Nonstop0h 00m
£241
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Sat 10/10
09:38-06:30
1 stop14h 52m
London Heathrow
Wed 31/12
00:00-17:00
Nonstop0h 00m
£244
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Wed 30/12
14:25-10:50
2 stops14h 25m
London Heathrow
Wed 31/12
00:00-17:00
Nonstop0h 00m
£244
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Mon 11/1
18:25-15:45
1 stop15h 20m
London Gatwick
Wed 31/12
00:00-17:00
Nonstop0h 00m
£245
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Thu 1/10
19:25-21:00
3 stops43h 35m
London Luton
Wed 31/12
00:00-17:00
Nonstop0h 00m
£245
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Thu 3/12
18:30-15:40
3 stops39h 10m
London Luton
Wed 31/12
00:00-17:00
Nonstop0h 00m
£246
ChicagoLondon
MDW Chicago Midway - STN London Stansted
MDWSTN
Chicago Midway
Thu 1/10
11:45-22:25
2 stops28h 40m
London Stansted
Wed 31/12
00:00-17:00
Nonstop0h 00m
£246
Flights are sorted by cheapest return flights first.
Deals found on 11/9
Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Chicago to London
Have a flexible travel schedule? Discover the best time to fly to London from Chicago with our price prediction graph.
CHI-LON
MDW-LGW
ORD-LGW
ORD-LHR
ORD-STN
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.
Cheapflights Insights
Everything you need to know about your flight from Chicago to London
CHI-LON
MDW-LGW
ORD-LGW
ORD-LHR
ORD-STN
What is the cheapest month to book a flight from Chicago to London?
Currently, January is the cheapest month in which you can book a flight from Chicago to London (average of £487). Flying from Chicago to London in June is currently the most expensive (average of £1,028). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from CHI to LON?
Find hourly flight availability from Chicago to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 September 2026.
When flying from Chicago to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Chicago to London
Explore weekly flight availability from Chicago to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 September 2026.
The most flights from CHI to LON are scheduled on a Monday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (51 on average).
How much does it cost for a return flight from Chicago to London?
Airfare is below average for this route at the moment.
Chicago to London flights typically cost between £541 and £768 in January.The cheapest return price found within the last 5 days was £457 on Icelandair (10 Jan–17 Jan).
What’s the top stopover airport for flights from Chicago to London?
Share of one-stop return flights from Chicago to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Dublin (DUB) – chosen by Cheapflights users on 46% of one-stop itineraries from Chicago to London on Cheapflights.
What’s the cheapest stopover airport for flights from Chicago to London?
Average return fare for one-stop flights from Chicago to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £311.
What’s the fastest stopover option from Chicago to London?
Shortest average travel time for one-stop one-way flights from Chicago to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 10h 21m.
Which airport typically offers the quickest stopover for flights from Chicago to London?
Average stopover duration for one-stop one-way flights from Chicago to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 0h 56m.
How often are flights from Chicago to London delayed?
About 24% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 164 minutes.
What is the most punctual flight time for Chicago to London flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Chicago to London flights?
Over the past year, British Airways have had the lowest number of delays on this route, with just 23% of flights being delayed.
How far ahead should I book a flight from Chicago to London?
The best time to book flights from Chicago to London is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 16 September 2026.
Read reviews from past customers who have flown with United Airlines,Aer Lingus, andAmerican Airlines
from Chicago to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
Related info for your journey
Find useful and relevant information for your journey from Chicago to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How long is the flight from Chicago to London?
SWISS, Icelandair, and Scandinavian Airlines can get you from Chicago to London in just under 10h 25m. Your travel time can differ by up to 6h 20m. There are 3960 mi between Chicago and London. This flight may include one or multiple stops.
What are the cheapest airlines flying from Chicago to London round-trip?
Our cheapest airline available from Chicago to London is Icelandair. Our recent data shows that you can find tickets from as low as £363 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £421 and £458 round-trip. These flights start at 43% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Chicago to London one-way?
£280 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Iberia and British Airways, with prices starting from £285 and £286, respectively.
What are the most popular routes from Chicago to London?
The most popular route from Chicago to London is Chicago O'Hare Intl - London Heathrow. You may also consider Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London Stansted.
What are the most reliable airlines from Chicago to London?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to London on time: Royal Jordanian (68%), Air Canada (64%), Austrian Airlines (64%).
What are the cheapest flights from Chicago to London?
On average you can expect to pay £643 for a flight from Chicago to London. The cheapest flight overall is £229 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £398.
Can I find deals for business class flights from Chicago to London?
Yes. Cheapflights offers flight deals from Chicago to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Chicago to London?
Currently, January is the cheapest month in which you can book a flight from Chicago to London (average of £487). Flying from Chicago to London in June is currently the most expensive (average of £1,028). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 16 September 2026.
Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on 16 September 2026.
Discover the top 7 airlines that operate flights from Chicago to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 16 September 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Chicago to London?
Cheapflights makes it easy to find Chicago to London flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Chicago to London?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Chicago.
Can Cheapflights find flights from Chicago to London with no change fees?
Yes! Cheapflights helps users easily find flights from Chicago to London with no change fees.
Can Cheapflights notify me if prices for flights from Chicago to London become cheaper?
Yes! Start tracking prices for Chicago to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.
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Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
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