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Chicago to London flights
The cheapest Chicago to London fare we found recently is $303 on Tue, 17 Nov with Icelandair. The route covers 6,344 km.
Cheapest$303Tue, 17 Nov
Typical fare$329Next 2 months
Flight time9h 33m6,344 km
DirectConnecting3 airlines
Cheapest month to fly
Lowest fare per month · tap to search
Cheapest upcoming dates
Recent real fares per adult, economy
| Date | Airline | Stops | Duration | Fare | Action |
|---|---|---|---|---|---|
| Tue, 17 Nov 18:30 |  Icelandair | 1 stop | 9h 30m | $303 | Compare |
| Sun, 15 Nov 20:15 |  jetBlue | 1 stop | 9h 29m | $303 | Compare |
| Fri, 16 Oct 12:38 | jetBlue | 1 stop | 9h 49m | $329 | Compare |
| Sat, 17 Oct 06:10 | jetBlue | 1 stop | 9h 47m | $329 | Compare |
| Mon, 9 Nov 18:30 | Icelandair | 1 stop | 9h 30m | $331 | Compare |
| Sun, 1 Nov 20:10 |  TAP Air Portugal | 1 stop | 10h 55m | $336 | Compare |
| Thu, 29 Oct 13:00 | jetBlue | 1 stop | 9h 33m | $437 | Compare |
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Booking sites for this route
Estimated convenience fee per traveller, per flight
Airlines on this route
Icelandair from $303jetBlue from $303TAP Air Portugal from $336Route facts
FromO'Hare International Airport (ORD)
ToLondon Heathrow Airport (LHR)
Distance6,344 km
TypeInternational
Departure time zoneAmerica/Chicago
Arrival time zoneEurope/London
Coupons for this trip
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EaseMyTrip Reported
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Chicago to London: questions
What is the cheapest flight from Chicago to London?
The lowest recent fare is $303 per adult on 17 November with Icelandair. Typical fares in the next two months are around $329.
How long is the flight from Chicago to London?
The fastest flight we found takes 9h 29m; a typical journey takes 9h 33m. Connecting itineraries take longer.
Which airlines fly from Chicago to London?
Recent fares on this route include Icelandair, jetBlue, TAP Air Portugal.
When is the cheapest time to fly from Chicago to London?
Based on recent searches, November 2026 has the lowest fares, from $303. Prices rise closer to departure, so booking 3–6 weeks ahead (6–10 weeks for international) usually helps.
Is there a direct flight from Chicago to London?
We did not see non-stop fares in recent searches; most options connect via a hub.
Which site is cheapest for Chicago to London flights?
It changes by date. Aeroport compares each site's estimated checkout total — fare plus convenience fee, minus active coupons — so you can see the cheapest site for your exact flight before you book.