Cheap flights from Chicago to London

Chicago FSS
CHI
London
LON

Flight deals from Chicago to London

Below you can see the best deals on flights Chicago — London for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 29 September, from $237.

Top 10 cheap flights from Chicago to London

B6
Z0
$ 319

Chicago — London

10:59—06:20
12 Sep 2026
13 h 21 m
1 stop
B6
Z0
$ 319

Chicago — London

07:00—06:20
12 Sep 2026
17 h 20 m
1 stop
UA
Z0
$ 327

Chicago — London

11:00—06:20
12 Sep 2026
13 h 20 m
1 stop
UA
Z0
$ 327

Chicago — London

10:25—06:20
12 Sep 2026
13 h 55 m
1 stop
UA
Z0
$ 327

Chicago — London

10:00—06:20
12 Sep 2026
14 h 20 m
1 stop
UA
Z0
$ 327

Chicago — London

08:40—06:20
12 Sep 2026
15 h 40 m
1 stop
UA
Z0
$ 327

Chicago — London

07:45—06:20
12 Sep 2026
16 h 35 m
1 stop
UA
Z0
$ 327

Chicago — London

07:05—06:20
12 Sep 2026
17 h 15 m
1 stop
UA
Z0
$ 327

Chicago — London

07:00—06:20
12 Sep 2026
17 h 20 m
1 stop
UA
Z0
$ 327

Chicago — London

06:00—06:20
12 Sep 2026
18 h 20 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

When is the best time to book a flight from Chicago to London?

The price of a flight from Chicago to London changes depending on how far ahead you book. For the best chance of a lower fare, book around 8 days before departure, when the average ticket costs about $569. Fares also tend to climb as the departure date gets closer.

About the Chicago — London flight

Looking for cheap flights from Chicago to London? Compare fares from different airlines, check the flight schedule and travel time — and book your Chicago — London ticket online at the best price.

The route has direct flights — around 270 flights per week, flights are operated by Alaska Airlines, American Airlines, United Airlines, British Airways and 6 more airlines, a nonstop flight takes about 7 h 45 min, the distance between the cities is around 6,371 km.

Planning your trip? You may find our London travel guide, how to get from the airport into town and London weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $199Min. price
JanuaryCheapest
AugustPeak season
YesDirect flights
6,371 kmDistance
7 h 45 minTravel time
10Airlines
270 / wkFlights

Flight schedule from Chicago to London

The table shows direct flights from Chicago to London on the selected date. The flight takes approximately 7 h 45 min. Regular flights are operated by Alaska Airlines, American Airlines, United Airlines and British Airways. Departures from O'Hare International Airport, Chicago Midway International Airport and Midway International Airport airports, arrivals at Heathrow Airport, London Gatwick Airport and Stansted Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 14 Aug 2026

Flight ticket prices by day: Chicago — London

Below is a calendar of the lowest flight ticket prices for Chicago — London by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $199 in January, and the most expensive are around $395 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Chicago to London by month. Tickets are usually cheapest in October (around $391) and priciest in June (about $605) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$428lowMay$503mediumSep$493medium
Feb$577highJun$605highOct$391low
Mar$437lowJul$586highNov$400low
Apr$475mediumAug$521mediumDec$558high

Some values are estimated based on seasonality.

When to fly

Weather in London: it is warmest in July (up to 22 °C on average) and coolest in January (around 7 °C). The driest month is June.

Tickets are usually cheapest in January and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · London

Dry and wet days · London

Wind speed and direction · London

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How to get the best deal on a Chicago — London ticket

  • Book ahead: fares for Chicago — London are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Chicago is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to London is usually January — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Chicago — London route are operated by 10 airlines; Alaska Airlines runs the most flights (around 25% of all flights). Compare carriers, flight shares and schedules below.

  • Alaska AirlinesAS
    23x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight ORD → LHR23x/week
    25.2%Open →
  • American AirlinesAA
    19x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight ORD → LHR19x/week
    20.7%Open →
  • United AirlinesUA
    14x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight ORD → LHR14x/week
    15.6%Open →
  • British AirwaysBA
    14x/week
    WebsiteFleet: 29243M pax/year
    • Direct flight ORD → LHR14x/week
    15.6%Open →
  • Aer LingusEI
    6x/week
    WebsiteFleet: 5710.7M pax/year
    • Direct flight ORD → LHR6x/week
    6.7%Open →
  • IberiaIB
    5x/week
    WebsiteFleet: 9224M pax/year
    • Direct flight ORD → LHR5x/week
    5.9%Open →
  • Brussels AirlinesSN
    4x/week
    WebsiteFleet: 468.3M pax/year
    • Direct flight ORD → LHR4x/week
    4.4%Open →
  • AustrianOS
    3x/week
    WebsiteFleet: 6814.6M pax/year
    • Direct flight ORD → LHR3x/week
    3.3%Open →
  • LufthansaLH
    2x/week
    WebsiteFleet: 38764.5M pax/year
    • Direct flight ORD → LHR2x/week
    2.2%Open →
  • FinnairAY
    1x/week
    WebsiteFleet: 7911M pax/year
    • Direct flight ORD → LHR1x/week
    0.4%Open →

Cities and airports on the Chicago — London route

Flights Chicago — London depart from O'Hare International Airport, Chicago Midway International Airport, Midway International Airport and Chicago Rockford International Airport and arrive at Heathrow Airport, London Gatwick Airport, Stansted Airport and London Luton Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Chicago

CHI
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

London

LON
United Kingdom
About the cityHow to get thereWeatherAll about the country United Kingdom
Departure airports
Arrival airports

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Frequently asked questions about the Chicago — London flight

How long is the flight from Chicago to London?

A nonstop Chicago — London flight takes about 7 h 45 min — the distance between the cities is around 6,371 km.

How far is it from Chicago to London?

The distance from Chicago to London is about 6,371 km, which a nonstop flight covers in around 7 h 45 min.

Are there direct flights from Chicago to London?

Yes, there are nonstop flights Chicago — London — around 270 flights per week.

Which airlines fly from Chicago to London?

Airlines operating Chicago — London include Alaska Airlines, American Airlines, United Airlines, British Airways, Aer Lingus. See the full list with schedules in the "Airlines" section on this page.

Which airports do Chicago — London flights use?

Flights from Chicago depart from O'Hare International Airport, Chicago Midway International Airport, Midway International Airport, and arrive at Heathrow Airport, London Gatwick Airport, Stansted Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Chicago to London?

The price of a Chicago — London ticket depends on your travel date, season and demand: it is usually cheapest to fly in January, and most expensive in August. Tickets typically cost between $199 and $395. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Chicago — London?

Flights Chicago — London are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is January. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Chicago to London?

To catch a low fare Chicago — London, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually January.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Chicago

See all
New York CityTorontoDetroitWashington, D.C.AtlantaMinneapolisLos AngelesSeattleBostonDallasHoustonOrlandoDenverNashvilleIndianapolisSan DiegoMontrealMilwaukeeSt. LouisCharlottePhiladelphiaColumbusKansas CityMiamiPhoenixLas VegasCincinnatiGrand RapidsDes MoinesRaleighSan FranciscoMadisonDaytonGreen BayTampaPittsburghLouisvilleKnoxvilleRochesterCleveland

Where else you can fly from London

See all
New York CityAmsterdamMadridBarcelonaDublinParisFrankfurt am MainMilanPalmaMalagaEdinburghIstanbulGenevaGlasgowBelfastLisbonFaroZurichNiceRomeLos AngelesCopenhagenAthensAlicanteBerlinSan FranciscoDubaiBostonIbizaTorontoAntalyaMunichDohaBristolStockholmOsloViennaDusseldorfCardiffPrague

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