$168 Find Cheap Flights from Chicago to the United Kingdom

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to the United Kingdom departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Chicago to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London2 stops$544
Edinburgh
Edinburgh2 stops$526
Manchester
Manchester1 stop$518
Birmingham
Birmingham1 stop$547
Inverness
Inverness1 stop$516
Bristol
Bristol1 stop$630
Cardiff
Cardiff2 stops$544
London
London2 stops$544
Edinburgh
Edinburgh2 stops$526
Manchester
Manchester1 stop$518
Birmingham
Birmingham1 stop$547
Inverness
Inverness1 stop$516
Bristol
Bristol1 stop$630
Cardiff
Cardiff2 stops$544

Book Cheap Chicago to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to the United Kingdom that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to the United Kingdom

Fri, Apr 3 - Fri, Apr 10
Icelandair Logo
10:25 pm - 1:25 pm
ORD
-
GLA
9h 00m
1 stop
Icelandair Logo
2:30 pm - 9:25 pm
GLA
-
ORD
12h 55m
1 stop
$510Icelandair
Mon, Apr 13 - Wed, Apr 22
Icelandair Logo
7:25 pm - 11:40 am
ORD
-
MAN
10h 15m
1 stop
Icelandair Logo
1:05 pm - 6:15 pm
MAN
-
ORD
11h 10m
1 stop
$518Icelandair
Fri, Apr 3 - Fri, Apr 10
Icelandair Logo
10:25 pm - 11:40 am
ORD
-
MAN
31h 15m
1 stop
Icelandair Logo
1:05 pm - 6:15 pm
MAN
-
ORD
11h 10m
1 stop
$519Icelandair
Sun, Apr 12 - Sun, Apr 19
Icelandair Logo
10:25 pm - 11:40 am
ORD
-
MAN
31h 15m
1 stop
Icelandair Logo
1:05 pm - 6:15 pm
MAN
-
ORD
11h 10m
1 stop
$520Icelandair
Sun, May 3 - Wed, May 13
Icelandair Logo
10:25 pm - 1:25 pm
ORD
-
GLA
9h 00m
1 stop
Icelandair Logo
2:30 pm - 9:25 pm
GLA
-
ORD
12h 55m
1 stop
$525Icelandair
Fri, Aug 21 - Mon, Aug 24
Scandinavian Airlines Logo
7:15 pm - 9:30 am
ORD
-
EDI
56h 15m
2 stops
Scandinavian Airlines Logo
7:10 pm - 4:10 pm
EDI
-
ORD
27h 00m
1 stop
$563Scandinavian Airlines
Tue, Mar 10 - Wed, Mar 18
Delta Logo
6:07 pm - 11:40 am
MDW
-
LHR
12h 33m
1 stop
Delta Logo
6:30 am - 5:54 pm
LHR
-
MDW
16h 24m
2 stops
$649Delta
Wed, Apr 8 - Wed, Apr 22
Delta Logo
9:35 am - 7:10 am
MDW
-
LHR
15h 35m
1 stop
Delta Logo
8:40 am - 6:36 pm
LHR
-
MDW
15h 56m
2 stops
$654Delta
Wed, May 6 - Tue, May 12
Lufthansa Logo
10:30 pm - 5:55 pm
ORD
-
LCY
13h 25m
1 stop
Lufthansa Logo
9:15 am - 7:55 pm
LCY
-
ORD
16h 40m
1 stop
$661Lufthansa
Mon, Mar 9 - Wed, Mar 18
KLM Logo
5:25 pm - 8:10 am
ORD
-
LCY
9h 45m
1 stop
KLM Logo
9:20 am - 3:20 pm
LCY
-
ORD
11h 00m
1 stop
$662KLM
Booking Insights

KAYAK's insights & trends for Chicago to the United Kingdom flights

Get data-powered insights and trends into flights from Chicago to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Chicago to the United Kingdom flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United Kingdom from Chicago found in the last 72 hours was to London, at $577 round-trip. The most popular route is from Chicago O'Hare Intl Airport (ORD) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $577.

Can I save money by flying with a layover from Chicago to the United Kingdom?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $723, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Chicago to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago to the United Kingdom is September, when tickets cost $655 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,147 and $959 respectively.

What’s the cheapest day of the week to fly from Chicago to United Kingdom?

The average price of all round-trip flights from Chicago to the United Kingdom clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to United Kingdom on a Tuesday and more expensive on a Saturday. On your return trip to Chicago, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

How far in advance should I book a flight from Chicago to the United Kingdom?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago to the United Kingdom, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$168
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from Chicago O'Hare Airport to Manchester

Flights from Chicago to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Chicago to the United Kingdom 
Verified travelerFlew with British Airways
ORD
-
LHR
Jun 2025
Get a wheel chair if you have difficulty walking
JoeFlew with Iberia
ORD
-
LHR
Apr 2025
Get there early. Nice airport options while you wait.
Verified travelerFlew with Iberia
ORD
-
LHR
May 2025
Get to the airport early so you’re relaxed. Con yourself into believing it’s bedtime and try to sleep so that you can keep going all day when you get there. If you can afford more comfy seats it might be worth it - though I always have the cheap ones so I can’t say for sure. Try very hard not to. sit in the middle. I’m small and the guy next to me played games all night and didn’t care that he continually ( with every move) jabbed me with his arm. This was my first flight with Cheap Flights and it was far less convenient than other times I’ve flown overseas.
DinaFlew with United Airlines
ORD
-
LHR
Jan 2025
Anticipate delays, prepare for long walks through Heathrow to baggage claim or for connections.
KariFlew with British Airways
ORD
-
LHR
May 2024
Always check to confirm your assistance is in system. No wheelchair waiting for me in London. Had no clue about airport or how to get around. Got lost easy
AaronFlew with American Airlines
ORD
-
LHR
Dec 2023
Find a flight where you are allowed to choose your seats before the day of boarding for anything international.

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Chicago to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago to the United Kingdom is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Chicago to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Chicago to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally at night, when round-trip flights cost $811 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the evening, which is peak travel time and where the average cost of a ticket is $835.

Reviews of the top 5 airlines serving from Chicago to the United Kingdom

 
Need help choosing which airline to fly with from Chicago to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9350 reviews
6.6Food
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
Airline reviews

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

8.0 ExcellentDr. Joseph, Feb 2026
ORD - DCA
Read more United Airlines reviews

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

I understand weather is an issue, but making us chase our plane down at five scheduled gates across three terminals in an airport the size of O'Hare was unfair. They'd have probably been better off to leave gates as TBD until the inbound plane is in final approach instead of running us all over the place. Also, props to the consistently-unprepared ground crew in Richmond for once again leaving my lane parked short of the gate because they couldn't have a crew in place on time with 2 hours notice...

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Not United Airlines' fault. It's ORL airport's fault.

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

As previously stated the delay I experienced flying from Wichita to Chicago caused a host of issues. When I finally was able to be booked on the last remaining American flight from Chicago to Cincinnati, the gate changed four times with the last change occurring very near the scheduled boarding time. While I didn't have a problem moving from gate to gate, I did notice and make note of others that had mobility issues and had to move each time for the gate change.

Maintenance took a very long time and then we were in a holding pattern. While a one-off maintenance issue is standard, there were delays on both of my flights for this trip based on maintenance issues with the planes, which delayed both flights over 45 minutes. Thankfully, I didn't have any connections but it wasn't an experience that would make me pick AA if I have other options.

No Snacks or Entertainment. The flight was short, snacks should still be given.

See prior comment about how Kayak mishandled my reservation and delayed my arrival by 6 hours.

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Delayed an hour due to operational issues. Minimal apologies or care for the significant inconvenience caused. Landed at nearly 1am and they still couldn’t find ground staff to get us off the plane promptly.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

Crew in Columbia was not prepared for landing. It was a bit of a disaster and getting bags took forever.

We were upgraded to First Class and it was a great flight

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

It was too cold in the plane my feet froze

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Awful. They didn't even show concern that her connecting flight( Dallas to Mardrid) was gone/missing. I don't understand how that is even possible. Rudest answer from one of the crew was that American Airlines sold the tickets to somebody else. My daughter was not in the list.

The flight was canceled on a Thursday last minute. I lost thousands of dollars in hotels and car rental

Excellent lie flat seat for premium economy! Great staff. Bad food . Not so great entertainment. My bag didn’t make it either.

Really like the idea experience on this airline I will use again

The boarding procedure got confusing because they wanted to weigh everyone’s carry-on. Apparently mine was 3 1/2 kg over their limit. I didn’t know they had a limit. And at the check-in desk, nothing was said about this. They wanted me to check the carry-on at no charge and that would have been fine except then they told me at my connection in London I would have to go outside to baggage claim retrieve my bag, and then recheck it. In other words, they could not check it to my final destination, only to London. I told him this was unacceptable so after a few minutes of discussion, they came back and said that my bag would be OK to carry on the plane. It seems that if you have a connection then the weight is not as important. Then when I actually went to board the boarding agent said I needed a tag indicating that my bag had been weighed, even though she had just five minutes ago talked to the same person who cleared me. Lots of confusion seems like a very bad process. They need to improve this.

My flight being automatically moved messed up my travel plans, and I had to quickly find an alternative mode of transportation. I couldn’t get a refund from any of the companies involved. Kayak, Ibiza, or Vueling. I am still unsure of how to settle my concern.

Plane delayed due to weather. Plane boarded, then told to unboard due to a maintenance issue.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

The staff was very nice and helpful. Some of the best crew I have met.

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Everything you need to know for your flight from Chicago to the United Kingdom

Cabin class types available on flights to the United Kingdom

Cabin classes available on flights to the United Kingdom. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.