How long is the flight from Chicago to London?

Non-stop flights on ORD → LHR are typically around 8 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.

Which airlines fly from Chicago to London?

The main carriers on this route are British Airways, United, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.

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

Historically the lowest fares land in January, February, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.

How far ahead should I book Chicago to London?

Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.

Can I book directly on destination.com?

The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

ORD → LHR

Chicago to London flights.

Live cached fares on Chicago (ORD) → London (LHR), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.

Flying time
~8h non-stop
Airlines
British Airways, United, American
Cheapest months
January, February, November

Flex dates · cheapest nearby

Loading prices…

Read our best-time-to-book guide for ORD → LHR →Target price, booking window, weekday pattern.

See 30-day price history for ORD → LHR →Median fare, lows, and best-day patterns.

No cached fares for exactly 2026-07-23 → 2026-07-30. Showing recent fares on ORD → LHR — pick a different date in the calendar above or run a live search.

Chicago → London · 17 fares12-month low · $199

Cached from Travelpayouts · filter & sort below

Showing 17 of 17 results

Cheapest
Icelandair · FI 852
OutboundORD → LHRThu, Jul 23 · 12:25 AM· 9h 30m· 1 stop
$199
one-way
Book →
Icelandair · FI 856
OutboundORD → LHRSun, Jul 5 · 3:25 AM· 9h 20m· 1 stop
$317
one-way
Book →
JetBlue · B6 406
OutboundORD → LHRThu, Jul 9 · 10:27 PM· 9h 33m· 1 stop
$397
one-way
Book →
JetBlue · B6 1012
OutboundORD → LHRSat, Jul 4 · 1:20 AM· 9h 22m· 1 stop
$442
one-way
Book →
Icelandair · FI 852
OutboundORD → LHRSun, Nov 22 · 12:30 AM· 9h 30m· 1 stop
ReturnLHR ← ORDSun, Nov 29 · 12:15 PM· 10h 5m· 1 stop
$722
total round-trip
Book →
TAP Portugal · TP 244
OutboundORD → LHRFri, Oct 9 · 11:00 PM· 10h 55m· 1 stop
ReturnLHR ← ORDSun, Oct 18 · 5:00 AM· 12h 10m· 1 stop
$777
total round-trip
Book →
SAS · SK 944
OutboundORD → LHRSat, Sep 12 · 12:15 AM· 10h 40m· 1 stop
ReturnLHR ← ORDMon, Sep 21 · 5:40 AM· 11h 5m· 1 stop
$841
total round-trip
Book →
United Airlines · UA 2455
OutboundORD → LHRTue, Sep 15 · 10:00 AM· 9h 4m· 1 stop
ReturnLHR ← ORDThu, Sep 24 · 5:30 AM· 10h 40m· 1 stop
$842
total round-trip
Book →
TAP Portugal · TP 244
OutboundORD → LHRFri, Aug 28 · 11:00 PM· 10h 55m· 1 stop
ReturnLHR ← ORDSun, Sep 6 · 7:00 AM· 12h 10m· 1 stop
$870
total round-trip
Book →
Icelandair · FI 852
OutboundORD → LHRFri, Aug 28 · 12:25 AM· 9h 30m· 1 stop
ReturnLHR ← ORDThu, Sep 3 · 6:40 AM· 9h 45m· 1 stop
$897
total round-trip
Book →
Icelandair · FI 852
OutboundORD → LHRWed, Jul 8 · 12:25 AM· 9h 30m· 1 stop
ReturnLHR ← ORDThu, Jul 9 · 7:40 AM· 10h 48m· 1 stop
$988
total round-trip
Book →
Icelandair · FI 852
OutboundORD → LHRMon, Jul 6 · 12:25 AM· 9h 30m· 1 stop
ReturnLHR ← ORDSun, Jul 12 · 5:30 AM· 10h 40m· 1 stop
$1,001
total round-trip
Book →
JetBlue · B6 406
OutboundORD → LHRTue, Jun 23 · 11:27 PM· 9h 46m· 1 stop
ReturnLHR ← ORDWed, Jul 8 · 7:15 AM· 11h 9m· 1 stop
$1,026
total round-trip
Book →
JetBlue · B6 406
OutboundORD → LHRTue, Jun 30 · 11:27 PM· 9h 46m· 1 stop
ReturnLHR ← ORDTue, Jul 7 · 7:50 PM· 15h 45m· 3 stops
$1,094
total round-trip
Book →
Icelandair · FI 852
OutboundORD → LHRSat, Jul 4 · 12:25 AM· 9h 30m· 1 stop
ReturnLHR ← ORDMon, Jul 6 · 8:25 PM· 10h· 1 stop
$1,164
total round-trip
Book →
JetBlue · B6 406
OutboundORD → LHRTue, Jun 30 · 11:27 PM· 9h 46m· 1 stop
ReturnLHR ← ORDThu, Jul 2 · 7:15 AM· 11h 6m· 1 stop
$1,302
total round-trip
Book →
JetBlue · B6 406
OutboundORD → LHRTue, Jun 23 · 11:27 PM· 9h 46m· 1 stop
ReturnLHR ← ORDFri, Jun 26 · 10:55 AM· 11h 30m· 1 stop
$1,312
total round-trip
Book →

Try a nearby airport

Thin routes often have more options from a neighbouring airport.

Chicago (MDW) → London (LHR)

nearby origin

Chicago (ORD) → London (LGW)

nearby destination

Chicago (ORD) → London (STN)

nearby destination

About Chicago → London

4-5 daily non-stops from ORD. United's international hub means easy one-stops via ORD from the Midwest.

Typical non-stop flying time is around 8 hours. Major carriers on this route include British Airways, United, American. Fares are usually cheapest in January, February, November — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.

Month-by-month price guide: Chicago to London

Live cheapest round-trip fare cached on ORD → LHR for each of the next 12 months. Tap any month and run a live search to confirm.

Jun
Peak
from $1026
Jul
Peak
from $988
Aug
Shoulder
from $870
Sep
Shoulder
from $841
Oct
Low
from $777
Nov
Low
from $722
Dec
No data
Jan
No data
Feb
No data
Mar
No data
Apr
No data
May
No data

Cheapest next 12 months: November from $722 round-trip. Run a live search →

Booking window tip

Medium-haul is the classic 6-10 week booking window. Fares drift down as the departure gets closer until about 21 days out, then start climbing fast. Tuesday and Wednesday departures are typically 10-18% cheaper than Friday or Sunday.

Price drop alerts

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Where to stay

Once you’ve booked the flight, pick a London neighbourhood.

See where to stay in London →

Questions, answered

How long is the flight from Chicago to London?
Non-stop flights on ORD → LHR are typically around 8 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.
Which airlines fly from Chicago to London?
The main carriers on this route are British Airways, United, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.
When is the cheapest time to fly from Chicago to London?
Historically the lowest fares land in January, February, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.
How far ahead should I book Chicago to London?
Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.
Can I book directly on destination.com?
The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

Other ways to reach London

If your plans are flexible on the origin, these alternate departure airports also serve London on the routes we track.

Other popular routes

Keep planning

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