Cheap Flights from Chicago to London
Compare indicative cheapest fares from Chicago (ORD) to London (LHR) — currently from $282. Check airlines, flight times and the cheapest days to fly, then book with our travel partner.
Search live Chicago → London faresFares from
$282
Fastest trip
9h 00m
Airlines
3+ carriers
Cheapest Chicago to London fares right now
Fares are indicative (updated periodically) and confirmed on our partner’s site. We may earn a commission when you book through our links, at no extra cost to you.
Airlines flying Chicago to London
On the Chicago to London route you will typically find fares from FI, B6, EI. Comparing a few carriers is the surest way to catch the cheapest flights, since the lowest fare shifts between airlines by the day.
Tips for the cheapest Chicago–London fare
- • Fly mid-week — Tuesday and Wednesday departures are usually cheapest.
- • Our data shows lower fares around October — target that window if you can.
- • Book a few weeks to two months ahead rather than last-minute.
- • Set a price alert and compare non-stop vs one-stop options.
Chicago to London flights — FAQs
How much is a cheap flight from Chicago to London?
Indicative fares from Chicago to London start from around $282 one-way. Prices change with the season and how far ahead you book — the cheapest deals we have on record for Chicago (ORD) to London (LHR) currently sit near $282.
Which airlines fly from Chicago to London?
Carriers offering fares on the Chicago to London route include FI, B6, EI. Availability changes daily, so compare the live options below before you book.
How long is the flight from Chicago to London?
The quickest itineraries we see on Chicago to London take about 9h 00m. Times vary by airline and number of stops.
When is the cheapest time to fly from Chicago to London?
Our data currently shows the lowest Chicago–London fares around October. As a rule, mid-week departures (Tuesday and Wednesday) and booking a few weeks to a couple of months ahead give you the cheapest flights on this route. Set a price alert and stay flexible on dates to save the most.
Where can I book cheap flights from Chicago to London?
Compare the indicative cheapest fares below, then tap "Book" to complete your Chicago to London booking on our trusted travel partner's site. Fares shown are indicative and confirmed at checkout.