Find cheap flights from Chicago to the United Kingdom

Find cheap flights from Chicago to the United Kingdom

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Chicago (CHI)
United Kingdom
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Good to know

Low season

February Best time to beat the crowds with an average 3% drop in price.

High season

June Most popular time to fly with an average 9% increase in price.

Average price round-trip

$658 (avg. price over the last 2 weeks)

Good deal round-trip

$389 or less

Good deal one-way

$202 or less

Top tips for finding cheap flights to the United Kingdom

  • Looking for a cheap flight? 25% of our users found tickets from Chicago to the United Kingdom for the following prices or less: to London $261 one-way - $474 round-trip
  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be January, November and December. The cheapest month to fly to the United Kingdom is January.
  • Morning departure is around 48% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs - booking United Kingdom flights

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Which airlines fly to the United Kingdom?

Are there United Kingdom travel restrictions currently due to Coronavirus?

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Top airlines flying from Chicago to the United Kingdom

Scores according to KAYAK customer reviews

7.3
Icelandair
Overall score based on 9,382 reviews
7.2
Boarding
7.3
Comfort
8.0
Crew
7.6
Entertainment
6.2
Food
Airline reviews

Cons: "No complaints."

Cons: "The flight attendants were rude answering the simplest question like what beverages are available to drink, etc coke, Pepsi...that basically tells you all you need to know about the level not only to me but all passengers in my area"

Pros: "Courteous staff, comfortable seats with pillows and blankets, great boarding system"
Cons: "Captain manspread... seriously dude, tone down the open thighs"

Pros: "Not much"
Cons: "Very poor communication did not cooperate connecting us to a different airline flight. Being put on hold for two hours to talk to customer service with no solution!"

Pros: "Very modern plane, good inflight entertainment system. Nice staff."
Cons: "Flight was great but didn’t like paying $65 per bag for 4 bags in the hold. Also tried to pay in advance online but didn’t seem to be a way to do it."

Pros: "Most crew members were great except one was very sour."
Cons: "No room under the middle seat for a bag and feet barely fit. They forgot to give pre-ordered meal. Hot in our part of cabin but stewardess made and effort to fix it."

Cons: "It was late causing me to miss my connections"

Pros: "Flight was fine. We fly economy and we know what to expect; all was fine."
Cons: "The late departure was not an issue for us; however the flight information board was poorly updated. Since we were connecting to a second Iceland Air flight, a nonissue. However those connecting to another airline with limited time would have been rightfully frustrated."

Pros: "The crew was extremely friendly and helpful, and flight staff were timely and there was good communication."
Cons: "I assumed an evening international flight would serve dinner, so it was disappointing that this wasn't the case. I wasn't able to enjoy the entertainment because I brought Bluetooth headphones instead of ones that plug in, and none of the movies or TV shows had subtitles."

Cons: "That it said on my itinerary that I had economy class but then they still charged me $90 to check a bag. It didn’t say anywhere that my ticket was economy light. I would have bought my bag beforehand to save money but it was not clear at all."

Pros: "Blanket and pillow already on chair. Pilots did an awesome job landing in a blizzard."
Cons: "No offer for headphones"

Cons: "There was no food offered although I had a 6 hour flight from O'Hare to Reyjkavik , and then another from Reyjkavik to Berlin. Both flights were with icelandair"

Pros: "Flight left on time. Staff friendly."
Cons: "Seats are not super comfortable."

Pros: "Flight rebooked fort they next day"
Cons: "Am waiting at hotel (only gave voucher for a single room for two people - my nephew and I). Room won't be ready until 14:00. We are exhausted from an overnight flight and have no where to go so we're stuck at the hotel. For several hours. I am tired and cranky."

Cons: "For the price food should be included"

Cons: "Ordered food off their website and wasn't given a meal."

Pros: "I liked the water bottle and blanket and courteous staff"
Cons: "It would have been nice to get a complimentary snack or meal since the flight is so long"

Pros: "I saw a lot of bad reviews and got nervous, but I had no trouble at all. I only wish they served food..."

Pros: "Clean plane. Nice crew. On time."
Cons: "No food service unless you paid for it al la carte. I would expect a bag of peanuts at minimum but preferably a breakfast! WiFi available... but again at a price. I would expect it free. I did not have ear-phones for the entertainment. Had to pay 8 euros to buy some! How long has that been an up fee?"

Cons: "no communication from crew and cockpit. we were sitting an hour on the runway without getting info what is going on. almost missed my connection because if the delay, where btw the crew won't give you any information either about connecting flights (e.g. gate#)"

Pros: "We safely arrived."
Cons: "The plane was only a 757, so smaller and more cramped. No food was served despite it being a 6+ hour flight. The screen in front of my seat did not work, but would not shut off. The seat next to me the headphones jack did not work. We were also late taking off and landing, making our connection very tight"

Cons: "Since my first int'l flight in 1980 I have never had one on which there was no food - no food - offered as a gratuity. I received 2 cups of water and asked for a cup of coffee. Aside from the food issue, this practice risks passengers' dehydration. No headphones offered, no pillows. Plane late departing from Reyjavik to Paris. Cramped airport. No place to sit other than the floor and on radiators."

Pros: "Quick boarding to minimize a delay. Good communication about the delay. Being handled a bottle of water upon boarding."
Cons: "Late departure, crew was scarce, paying for food and drink on an international flight."

Pros: "Everything"

Pros: "The crew and check in were easy and fast in CHI. The flight was just fine - be ready for Icelandic first then English - fun experience for sure! The detailed information they gave about what to do about our next flight in Reykjavik was helpful and proactive. One stewardess on the flight even gave my wife a whole extra large bottle of water and said, "Anything for the new mother!" Good customer service and sensitivity."

Pros: "Nice flight crew and good customer service."
Cons: "Food wasn't included nor were any snacks, 2$8,$ I thought was a bit cheap for an international flight. Also, it wasn't the best selection for special diet people (I'm vegetarian and gluten free)."

Pros: "I sat in seat 7F..had plenty of leg room and staff was friendly and helpful"

Pros: "nothing, but previously I've had great experience with this airline"
Cons: "They cancelled this ticket. I was unable to make a flight on the first ticket due to a business partner being ill (blood pressure issues). I then purchased a premium economy comfort ticket for the next day, also on IcelandAir, which was TWICE the cost of my original deal yet they would not honor my ticket. It really was quite disgusting and handled very badly. There was a medical situation that cost me far more than and then they would not honor my ticket to Manchester, so I had to fly WOWair to Bristol UK instead."

Cons: "Missed connection by a minute and got delayed ten hours."

Pros: "In theory a short connection to the US"
Cons: "No food unless you pay Staff not very nice Transfer at Reykjavik airport"

Pros: "Water was nice, boarding was ok, seat wasn't too uncomfortable"
Cons: "No food"

Pros: "Easy boarding. Delayed but arrived on time."
Cons: "No meal"

Pros: "Efficient and smoothe flight, on time"
Cons: "baggage delay due to? security breach at aircraft. 2 hours standing around, almost as long as the flight"

Cons: "Late"

Cons: "For such a long flight, I was shocked that we didn't even receive a snack. It was my first experience."

Pros: "The airline hospitality was very good. If our flight was on time the 40 minute connection would have been fine. Iceland airport is very small and easy to get throu."
Cons: "Our first plane didn't show up or have fuel, so we departed an hour and a half later. We missed the connecting flight in Iceland, but they already had us booked on another flight that day."

Pros: "Movies were available to watch."
Cons: "The only thing offered was one drink and this was an international flight. The flight was delayed which resulted in us arriving only fifteen minutes before boarding our next flight which was also delayed. You had to pay for internet unless in their premier club."

Cons: "Business class seats in Row 1 were AWFUL! No leg room and no foot rests. The most cramped and uncomfortable transatlantic flight we hsve ever taken. We had chosen tso seats in row 3 or 4 when we booked this flight months ago. But when we got our bosrding passes, our seats had been changed to row 1. We got off the plane in Reykjavik barely able to walk. The airport layout in Reykjavik where we changed planes was not well thought-out ... almost no signs,long lines. We thought ee would miss the flight to Stockholm. That flight was OK; we had better seats. But we were--and still are--so upset about the Chicago to Reykjavik flight that I will not fly again on Icelandic."

Pros: "Nothing"
Cons: "Everything"

Cons: "When we boarded in Reykjavik al was fine until the pilot announced that the bag sorting machinery was malfunctioning. We were told we'd be delayed while 18 bags were found and sorted by hand. Then it was 14. And an hour later, we left. Apparently it was still five. That is how many of us were still waiting at the carousel when all the bags had come off. I suspect Iceland Air decided that was an acceptable number and sent us on knowing that they hadn't found all the bags. I did eventually get my bag... six days later and after quite a few unanswered messages. That is partly because Iceland subcontracts list bag service to a company called THS, which again subcontracts delivery to a company called APC. All of these appear allergic to caulking US numbers. Iceland Air for the win."

Pros: "The flight was very comfy. Icelandair has large planes that don't feel at all cramped even in economy. The flight staff was very friendly and helpful. Keeping everything near and orderly. Made for a great flight."
Cons: "Only thing is we ran a little behind and the left my suitcase in Reykjavik. So I arrived to Zurich with only the clothes on my back and 1 change of clothes in my carryon. hoping for the airline to deliver it soon. The Zurich airport was quite helpful in making me a lost bag report and giving me a tracking number and even looking up where my bag was."

Pros: "This was probably the worst flight I have ever been on (and I have flown internationally a lot - and travel weekly for work purposes Icelandair - hands you a bottle of water and you never see the flight attendant again - this for a 6 hour flight!!!!!! the plane was extremely hot there was no communication to tell people what was going on, that we were late, agents to help - etc etc - nothing needless to say - I will never fly Icelandair again others were worse then us - some had no flight to be redirected too - and side note - the customer service counter at Birmingham - had NO ONE there for over an hour - they had to finally call someone to come down and help the many people there"
Cons: "Icelandair was delayed out of Chicago - but the agent stated our flight would be fine - we would only be arriving 15 min late - and even so - they would "hold" the flight" . We arrived and ran to the gate- people were still boarding - gate was open and the agent said to us and others - oh you are the Chicago people - you have to go to customer service. We find out we have been "bumped" off the flight and placed on a new flight 2 hours later with a non direct flight - we have to go through Birmingham now. We are delayed again out of Iceland and get into Birmingham 1 hour late. We were never told that we had to reclaim our luggage. When we preceded to reclaim our luggage - there was NO luggage. and spent over an hours looking for it Icelandair never put our bags on the plane - and stated they would go on flights sometime the next day - we still have no word"

Pros: "Crew was relaxed and kind."
Cons: "Delayed boarding. We left an hour late which resulted in a sprint through Reykjavik and missing luggage when i arrived at my final destination."

Pros: "The flight themselves were fine. Crew and planes were all up to par"
Cons: "The layover in Iceland was very tough for me. our the first leg of our journey has been delayed which is fine those things happen the airline had auto rebooked us as we were going to miss our second leg. However it wasn't until we attempted to board that new flight that we were told we needed new boarding passes as we had been rebooked again. We went and got our boarding passes and went to our gate to wait. We had been waiting there for maybe 15 minutes and became worried as no one standing around us was headed toward our destination and our flight was not on any television screens. I went back to the service desk and found out that there had been a gate change. We ran accross the airport and were nearly the last people in line for our next leg. Naturally our luggage did not follow us. We did receive our luggage a day later."

Pros: "I liked the seats, blankets, and pillows."
Cons: "The service was not good. No food was offered, everything was for purchase. Plus, only one beverage round on a 9 hour flight! We had to ask for water and it was given, but almost like well, OK, but don't bother me. Plus, our flight was delayed in Chicago, so we got to Iceland late. We made it to our connecting flight to Hamburg, but our luggage did not."

Pros: "Good entertainment (tablet, movies ), but it was the only good point"
Cons: "My second flight has been cancelled and replaced by an other flight 8 hours later. I as really annoyed but still I wanted to go out-of the city and visit a little bit. But in the end this flight has been so late that I haven't been able to do it... + no food in the plane (even though I was supposed to arrive in Paris at 1pm and I finally got there at 10.30 pm...)"

Pros: "Nothing"
Cons: "We didn't fly Icelandair, the flight was delayed more than 5 hours because there not enough passengers. Took an extra day to get to Brussels. Not impressed at all. I will be calling Icelandair for compensation."

Cons: "My flight from ORD to Reykjavik was delayed and so I missed my connection to Glasgow. I was rerouted to Amsterdam and got to Glasgow 7 hours after my original flight. Needless to say my luggage did not make it to Glasgow. I arrived in Glasgow on June 14th and did not receive my luggage until the evening of June 17th only because I went to the airport to pick it up myself instead of waiting for it to be delivered on the 18th. Four days of my 12 days of vacation were spent on the phone tracking down my luggage and worrying about whether I'd ever see it again."

Cons: "They were late. They didn't serve food. They lost my bag and rerouted me twice with an added connection. It was an awful experience."

Pros: "The crew were very nice overall but one flight attendant in particular was incredible. I didn’t get a name but he was friendly, welcoming, and kind."
Cons: "I sat in an emergency row with an empty seat to my left and really did not like how the passenger in the row behind me kept getting up and walking into my row to get his stuff from the bins."

Pros: "Sleeping and being left alone"
Cons: "Food, Service by cabin crew because they never smiled"

Pros: "Amazing punctuality, both on the way out to Lisbon and on the return to London."
Cons: "Cannot really think of anything that needed attention on these flights."

Pros: "The lady checking me in was nice"
Cons: "Items were stolen from my bag"

Pros: "Super friendly"
Cons: "Maybe a hot meal?"

Cons: "Legroom"

Cons: "Maybe have one flight be on time. Train ground crew how to put on fuel."

Pros: "Good entertainment, great price"
Cons: "Had about 30 people on our flight that was taking another TAP connecting flight - missed the gate by less than two minutes - did not hold the plane when they could have"

Pros: "It got us to our destination."
Cons: "Seats sucked. Screaming kids. Wouldn’t let us bring our carry-on for the last leg: Lisbon to Barcelona even though there was room."

Cons: "Ok, it's TAP, it's a bargain, but the "breakfast" was a pitiful piece of meat on a stale piece of bread"

Pros: "Food was ok"
Cons: "Worst accommodations for baggage on a international flight in my opinion.Pay for a bag is the best advice in my opinion this airline barley lets you bring anything with. Disgusting plane it was so dirty I took a shower after this flight and the amount of dust in the air was visible terrible"

Pros: "The crew was great."
Cons: "My baggage did not get delivered to the final destination, that could have been handled better."

Cons: "So many delays, no real info provided. When we had to stay overnight they didn’t mention it would take 4 hours to get our bags which actually never came. Airline industry sucks and deltas one of the worst."

Cons: "Not cancelling it"

Pros: "Very modern aircraft, good (but not excellent) food, small bathrooms"
Cons: "It was not made clear that I would have to pay for my baggage extra - it was $120 to check one bag! Boarding was slow and pretty awful and that you have to pay for any seating in advance is just awful! Also JustFlly wasn't able to actually assign the seats I had chosen was a real turn off. Bad term"

Pros: "Scam"
Cons: "Do not sell flight you are not able to manage. Shame"

Pros: "flight was more than 4 hours late!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
Cons: "flight was more than 4 hours late!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

Cons: "Passport control in Lisbon was awful and many people missed their flight in spite of them being made aware of the issue."

Pros: "clean and fast"
Cons: "use airport finger in Lisbon airport"

Pros: "Nothing"
Cons: "Everything"

Pros: "Surprised and delighted to be served a tasty sandwich and fruit drink plus glass of wine on a 3 pm 2 + hr flight from Lisbon to London"
Cons: "Seats uncomfortable"

Pros: "The crew and passengers were in a great mood on a Saturday night flight feom Orly to LIS"
Cons: "There were papers and debris from previous flight still on the floor. Clearly they did not vacuum. If yoy want piece and quiet, this is not thw late flight for you."

Pros: "Clean modern aircraft"
Cons: "Left 35 minutes late; had to take a bus to the plane in Lisbon (no gate)"

Pros: "Clean, modern plane - tightly-packed but comfortable seats. Note: if you travel with a bag with wheels it will be weighed at the gate and those over 8kg will be checked. If you have a heavy bag without wheels, it gets no scrutiny."
Cons: "Odd they didn’t have a terminal gate on their home airport - we were bused from a distant spot on the tarmac to the terminal."

Cons: "No cnn or fox news in English"

Cons: "Ground personnel one crew member in particular was unfriendly uncaring and unwilling to find a responsible resolution for the problem"

Pros: "There was nothing to like about this flight!"
Cons: "The seats were the most uncomfortable I have ever experienced. There was no leg room. My knees were in the back of the seat in front of me abd I could not move. Unless you are way below average height, don’t take this airline."

Pros: "Very friendly personnel at gate."
Cons: "Arrogant crew. Hid in galley behind curtain for most of the flight. For several hours not even the offer of a cup of water! No possibility to charge electronics in economy class. Charge of $ 75.00 for first bag on an international flight?!? We're not talking about a budget airline, but THE airline of Portugal!"

Pros: "The crew did a great job."
Cons: "The boarding process was nutz. We had to take a bus away from the terminal to board the plane. The flight was delayed. I was not very happy to have to spend $92 to check 2 bags."

Pros: "The staff were really friendly and the flight was as comfortable for me as a transatlantic journey in stage class can be. The food was surprisingly tasty and that Portuguese wine was offered for free made me and the passengers around me feel welcomed and well taken care of."
Cons: "My flight arrived late, apparently, as myself and people on two other connecting tap flights all deplaned after our respective boarding calls had begun. There was no announcement for people with tight connections or about what to do if we couldn't make them. That tap didn't plan out sufficient connection times for the conditions of the airport, and that it was security, not to itself, that did anything to try to expedite is through passport control, etc was disappointing and resulted in several extra hours stuck in the airport for me and for those on one of those other missed flights having to wait overnight for another seat"

Pros: "Flight on time and safe Crew very pleasant"
Cons: "Cramped seating Boarding dreadfully slow"

Cons: "We booked flight several months ago and it included seating assignment, so we choose our seats. Then when we check-in they had changed them to the last row of the plane. We had received a couple of emails asking for us for option to pay for advance seating. Assume they had changed their policy and now were charging. We had a close connection at LHR and being last off, we almost missed connection. Horrible"

Cons: "The delay on the take off"

Pros: "They gave us good snacks. Comfortable flight."
Cons: "We were delayed 1.5 hours. Had to sprint and almost missed my connecting flight."

Cons: "We had to postpone our first leg from London to Lisbon by a day and then they cancelled our return flight without telling us!!! So, we were trapped in Lisbon with no flight to return home. We called them and they said, "we cancelled your tickets and only have business class seats available for you and your toddler." We said no thank you. If we were going to spend 1k on a return flight, we were going to take British Airways. TAP, never again."

Cons: "The service was below average, nobody seems to be eager to assist. The food that was offered on the flight was below expectations. The company should work on improving customer care"

Pros: "Food was interesting and pretty good. Seats were okay. We were happy we choose tap"
Cons: "We never saw a crew member smile. They verged on being surley. From the time we boarded they were yawning. I do mean all of them were acting uninterested in doing their jobs."

Pros: "The fact that children were served first."
Cons: "N/A"

Cons: "Their 11 hours flight converted to 2 days flight with long waiting time between the flights. They also lost my baggage and there was no organization process in the airport as well as they couldn't resolve any problems related to their flight."

Pros: "Crew friendliness and attention"
Cons: "They ran out of diet coke and coke zero literally right after takeoff which is a joke!"

Pros: "Friendly crew. Good info on delay"
Cons: "No offer of coffee in businesss when woke up. Still 35-40 before landing"

Cons: "The lady changed my 11H seat for another seat (29B) when I claim that this is not fear , a man said to me that if I insist in this matter he will not let me in Or flight , for me this was an abuse"

Pros: "Lucky, had a seat in the front row so had room for my knees. The crew, as always, fantastic. Polite, professional, sense of humor."

Pros: "Everything was perfect! The staff was friendly and the food was nice. I found that there was more leg room than on other airlines."
Cons: "I used TAP to depart beautiful Portugal."

Pros: "Treat like a guest 2 great meals."
Cons: "Nothing"

Cons: "Excessive baggage fees on 2 connector flights TAP BUT TICKETS BOUGHT SEPARATE."

Pros: "Not much. Lunch"
Cons: "We paid to check the bag In and when we arrived the girl could not see this. We showed her clearly the paper then she charged ya and realised she had made a mistake but couldn't refund us. Terrible experience. Don't use the."

Pros: "Their system updates you with messages on gate changes and times. Staff is very friendly and professional. Planes are clean and seem well maintained."

Pros: "Flights were on-time, planes were clean/newer, snacks were good."

Pros: "The flight was fine, no issues. Plane was fine, no WIFI or entertainment. Served a small meal. For the price, excellent trip."
Cons: "All was good."

Read more about Icelandair
COVID-19 information

Safety measures for airlines flying from Chicago to the United Kingdom

Airlines flying from Chicago to the United Kingdom have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters

Mandatory masks

Masks required on board, masks provided

Social distancing seating

Middle seats unavailable to book

Pre-flight testing

Testing for antibodies, testing for symptoms

Book cheap flights from Chicago to United Kingdom

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30h 25m
ORD - LGW
1/15
Fri
1 stop
Finnair
12h 50m
ORD - GLA
12/8
Tue
2 stops
Air France
27h 45m
MDW - MAN
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