Find cheap flights from Illinois to London

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Find cheap flights from Illinois to London

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Boston (BOS)
London
Wed 4/21
Wed 4/28
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Low season

AugustBest time to beat the crowds with an average 20% drop in price.

High season

JulyMost popular time to fly with an average 50% increase in price.

Average price round-trip

$491(avg. price over the last 2 weeks)

Good deal round-trip

$70or less

Good deal one-way

$88or less

FAQs for booking flights from Illinois to London

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Top 3 airlines serving Illinois to London

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 29,181 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

Pros: "Kosher snacks! Thank you. Screens and outlets at every seat. Safe, controlled Covid protocols including de-boarding. Excellent!"

Pros: "Delta flight took extra precaution to keep all passengers safe before during and after the flight. They communicate effectively during the flight. I will be flying Delta again and again."
Cons: "The trip was great"

Pros: "The crew very professional. My flight was on time."

Cons: "We arrived around 39 minutes early and the whole process was very smooth"

Pros: "Crew was friendly, seats really comfortable!"
Cons: "Headphones sold for $ 2. Headphones preferably free"

Pros: "Crew was attentive and accommodating."
Cons: "Gates switched 3 times and all bags had to be checked because of a small aging plane."

Pros: "Calm and safe, just like I like it."

Pros: "Comfortable plane due to few passengers"
Cons: "7 hour delay after flight postponed."

Cons: "I would ask that the gate does not share in detail reason for delay in seat assignment is related to getting a family sitting together when the basic rules should apply unilaterally."

Pros: "Got to my destination without any issues"
Cons: "Seats/seating area are too small, and I'm not a big person."

Pros: "All good."
Cons: "Price"

Cons: "No AC for an hour before takeoff - very uncomfortable. Audio for tv did not work."

Cons: "Flight was delayed a bit due to a couple passenger booking/misc issues. 1st class didn’t get gate bevfood service. Oven was busted so my meal wasn’t available. Entertainment console had all channels functional except — not really an issue I just really wanted to have ESPN playing in the background"

Pros: "Son got wings, so was happy."
Cons: "No entertainment."

Cons: "It was late"

Pros: "Good snack selection. Crew was personable."

Cons: "Seat assignment for me and my traveling companion was done at gate. We had to sit in 2 different rows."

Pros: "Crew was nice and welcoming"
Cons: "Well, if our plane had been leaving on time it would've been superb."

Cons: "Notify the delay quickly"

Pros: "Helpful"
Cons: "More print media to read on"

Pros: "Crew was great."
Cons: "Couldn’t hear/understand the pilot"

Pros: "Flight attendant in first class was amazing."

Pros: "The boarding was fast and very well handled."

Cons: "My flight from Chicago was two hours late and that's why I missed the flight from Atlanta to Buenos Aires. No one helped and did not know that the flight was delayed and I had to find a place to sleep. I'm not satisfied with the experience and I have not yet arrived in Argentina because of the whole"

Cons: "It was delayed"

Pros: "N/A"
Cons: "Chinese Eastern did not try to help and solve my problem."

Pros: "There was a bit of a mixup in boarding the plane but otherwise the flight was good. There was no entertainment system on this short flight. The flight attendants were very pleasant & efficient. They only served snacks on this short flight but were very good at ensuring everyone had at least one or more beverages. The premium seats were very comfortable ."

Pros: "Short flight"
Cons: "Flight attendant was not willing to go above and beyond as he stated he would. My husband asked for a coke and the flight attendant told him he could only get water."

Pros: "It was a smooth boarding, flight and exit out of the plane."

Pros: "On time departure/arrival despite weather in Atlanta. Always a fan of free messaging and choice of snacks."
Cons: "Delta needs to invest in their gate area at ORD. Understand it’s not a hub but it’s a key business/leisure destination. The MD-80s are ok for a short hop but over 1 hour unless you’re in Comfort+, it’s tight."

Pros: "Snacks, cleanliness and crew"
Cons: "N/A"

Cons: "From the begging they changed the flights for something totally different. It was a 14 hour trip. Awful"

Pros: "Nothing"
Cons: "They take them forever to find me another fly ,make miss my other fly, my work my time and my sleep"

Pros: "It was a normal flight as well expected."

Pros: "I was with my friend"
Cons: "Delayed 12+ hours"

Pros: "I was given a complimentary upgrade."

Pros: "The crew and pilot were absolutely amazing."
Cons: "This is my 3rd delta flight in a row that has been delayed. I understand these things happen, just extremely frustrating."

Cons: "It takes time and worries to find the air train and Aeroflot registration."

Pros: "The service was amazing , the staff was honestly friendly and nice"

Pros: "Great service, nice agent friendly"

Pros: "Very friendly and professional gate agent and flight attendant"

Cons: "I was unable to fly at all due to a spelling error on my ticket. The airline refused to alter the ticket. Worst experience of my life, ruined my Christmas"

Pros: "Very nice flight and attentive staff. Enjoyed the view of NYC as we flew up the East River, then looped over Nassau County to approach LGA."
Cons: "The male flight attendant who handed out the complimentary drinks and snacks acted a bit strangely. I was very thirsty, and I asked him if I could keep the rest of the can of soda. He neither said yes nor no, but rather completely ignored what I said and just poured my drink and moved on. I was a mildly annoyed, but figured maybe it was policy and he was shy and didn't want to debate the matter. When he took care of the older couple behind us, however, things got really strange. He asked them whether they wanted pretzels or peanuts, but they misheard him and asked for a ginger ale. I happened to know that he did have ginger ale, since my wife had just gotten one, but rather than just pouring the old folks a drink, he repeated himself. "Peanuts or pretzels?" They misheard again and asked him whether he had a diet ginger ale. Again, rather than just pour them the drink, he repeated himself. "Peanuts or pretzels?" This went round and round a few more times -- like a poorly designed computer UI that refuses to accept anything except the correct input -- before the old couple finally figured out the disconnect and picked their snacks before their drinks. Very weird."

Cons: "Layover"

Pros: "Short flight"
Cons: "Too cold Not friendly boarding agent"

Cons: "Had a death in the family and no one would help me get back home"

Pros: "Seats were comfortable. Snacks!!! Nice flight crew."
Cons: "I liked everything."

Pros: "The movie I watched was pleasant, although I had trouble hearing it because of the situation described below."
Cons: "There was a family seated behind us with several crying, loud children. We were miserable. Even my headphones with a Mozart sonata cranked up to loud did little to mask the noise. Probably not Dela'a fault, but the crew did nothing to mitigate the problem."

Cons: "Plane was sat broken at gate and needed part to be flown in. 150 minutes delayed. Not acceptable."

Cons: "Timeliness"

Cons: "Terrible. Flights delayed by 90 minutes. Then on boarding we as a couple weren’t sat next to each other on the four across plane, but in the two aisle seats. This was bad. But then no one was sat next to my wife. So an empty seat, my wife, me, then a stranger. C’mon Air Canada, figures it out."

Cons: "They loose my luggage!!!!!!"

Cons: "The train at Chicago airport was broken. I walked to get the next gate to the other terminal."

Pros: "Many airlines have code share flights but it is better to buy ticket directly from the original airline as they keep on ignoring the code share flight bookings"
Cons: "Till last moment we were kept hanging if we will board or not as no seat number was allocated. I believe it was as we were from the code share airline not the real one"

Pros: "There wasn't anything that stood out that I could say I liked."
Cons: "I didn't care for the attitudes if the stage working in the Toronto airport. Things really aren't clear there for first-timers and much of the staff was acting like I should already know to do a lot of things when there weren't any clearly posted signs saying so. There is also a huge lack of organization."

Pros: "Upgraded to business class."

Pros: "I got upgraded to first class!"

Pros: "We had a very good experience with Air canada and will use Air Canada again."

Pros: "Extremely helpful and accommodating! Thanks to all!"

Cons: "The seats are large, but they tilt forward. I'm 6'2" and have anxiety issues related to spinal problems. That forward pitch in the seat (half way up the seat) is an painful problem for people like me."

Cons: "Departure was late, causing me to have to run to the next gate"

Pros: "At least the entertainment systems worked this time."
Cons: "I've never thought that airplane food was bad before, but they ran out of the main options and I was left with macaroni and cheese. It was bad."

Cons: "We were walking towards our seats near the end of the aircraft when this flight attendant stopped us from loading our hand luggage in the overhead bins. She made us stuff them under the seats in front of us. There was space im the overhead bin, but there was a bunch of stuff that belonged to the cabin crew. Rude."

Cons: "See above."

Pros: "Long wait for ticketing and at customs during transfer"

Pros: "One kind guy at air Canada in Toronto who was very helpful considering the lack of help from every one else. Arrived at 2 in morning exhausted."
Cons: "Attitude of staff"

Cons: "My original flight was delayed by 3 hours, causing me to miss my connecting flight. Instead of arriving at 9:30 at my final destination I arrived at 1:30 am. Exhausted."

Pros: "Crew"
Cons: "Boarding gate very small"

Pros: "I liked that we got a lot of food, and the movies were very good. Groups for boarding made sense and we boarded quickly"
Cons: "it was late and despite being 4.5 hours there were no free snacks or food. Only one toilet which we could never use bc of constant turbulence."

Pros: "The ever wonderful Air Canada cancelled a bunch of the flights that I had originally booked 2 months before I left and marooned me in the Toronto airport for an 8 hour layover on my way home. Unacceptable. No reason given, no apology made, nothing."

Pros: "Poor airline, always delayed, dreadful and unfriendly customer service. The only reason I flew with them this short trip was due to price"

Pros: "Smooth take off and landing."
Cons: "The numbers above the seating arrangement cause a lot of confusion for people and some almost want to argue for the window seat."

Cons: "My flight was changed and I wasn't informed - I cleerly checked my information beforehand but it would be nice if flights were to change by two hours, to know in advance so arrangements could be made"

Cons: "It was so great we didn't go. Got a refund you retards"

Cons: "horrible"

Pros: "short trip"
Cons: "delayed but didn't update the screen as delayed even though it was delayed an hour it still said on time."

Pros: "The crew was attentive."
Cons: "The head phone slot did not work. Then the TVs went out which did not matter because I could not listen to them anyway."

Cons: "Delayed"

Cons: "This is the third time that I flight with Air Canada and the third time that my flight got delayed. Never again!"

Pros: "Plane was super old...peeling paint, barely any full size luggage space, no in flight tv and always late or delayed. 4/4 flights we took were delayed. This airline is the worst and were terrible at keeping us updated on delays or cancellations."

Pros: "Staff was friendly"
Cons: "Uncomfortable seating"

Pros: "Everyone I came in contact with was amazing and super helpful!"

Pros: "Staff were friendly and helpful"
Cons: "Delays leaving the gate led to longer delays taking off."

Cons: "The departure time for the flight was 6:00am and there was no one in the check in counter until 4:15am. There was a long queue for the check in. Not a pleasant waiting time for the check in"

Cons: "The engine was making an unusually loud whirring sound. Felt concerned that the plane was not fit to fly."

Pros: "The plane was delayed and I had a short layover so I was maybe not going to make it to my next flight so they transferred me to another airline and was upgraded to first class for free!"
Cons: "I disliked that my flight was originally at 4 pm and the one that I was changed to didn't leave until 8 pm"

Pros: "Quick flight"
Cons: "Delays"

Pros: "The food was very good, and the alcohol was free even the second time around which i liked"

Cons: "Not enough time to go through customs. Missed connection."

Cons: "Deplaning and entering the terminal was delayed substantially."

Cons: "No free alcohol. Lights didn't turn off ever so I could get some sleep."

Pros: "The crew on the flight was nice, and the entertainment was good."
Cons: "Our first Air Canada flight was 2hr delayed due to mechanical error. After a 2hr delay, we finally flew for 1hr, had awful turbulence on the way down, and got to Toronto only to find out there was no customer service desk. We missed our connection with Luftanza and had to fly Air Canada again. First off, we couldn't get on another flight until the next morning. Then the desk never called the hotel they gave us the voucher for, so when we showed up at midnight the hotel was fully booked and had no room for us. We had to fly into Heathrow instead of Gatwick (final destination was Brighton for an international conference). We missed the entire first day of the meeting and had to rent a car for 65 pounds each to take us to Brighton from Heathrow, finally arriving at our hotel by midnight. The customer service was non-existent for Air Canada. We literally are going to have to email them."

Pros: "The flight was comfortable. Entertainment choices were varied and generous."
Cons: "o'Hare needs an upgrade."

Pros: "How quick it waz"
Cons: "How close the seats were"

Pros: "I liked the way they handled the rain delay. Although inconvenient, they were transparent with the process"
Cons: "The lack of certainty whether we were removed or stilling our connecting flight to delay."

Pros: "On board service Comfortable seating and space On time dep. & arrival"
Cons: "None"

Cons: "Long delay because the catering company forgot to replenish the aircraft."

Pros: "I like having the trip map in front of me so I can track progress. Usually I don't get it on flights this short."

Pros: "The crew was friendly, there was entertainment available via the display on the back of the seat."
Cons: "The touchscreen display wasn't working properly, making it difficult to control things like volume. I would have preferred a display with physical buttons that took a bit more time than the weirdly synced touch screen"

Pros: "Great service"
Cons: "Waiting an hour to take off"

Pros: "Everything"
Cons: "Keep improving for sustainability in market. Best"

Cons: "Everything was great"

Pros: "Nothing"
Cons: "The fact that it hasn't left yet and it won't leave until 8pm."

Pros: "Finally sitting in my seat"
Cons: "3 hrs late sucks"

Pros: "They know their business"
Cons: "No free Internet. Costs too outrageous."

Pros: "I enjoyed an on time departure and early arrival."

Pros: "The service since I am handicap"

Cons: "Good"

Cons: "Nothing"

Pros: "Everything went as it should. Very happy."

Pros: "Pilot helped with luggage. I was using a cane and c sm very v short"

Cons: "Same as above"

Cons: "Tv was subpar"

Pros: "The directTV was great."

Pros: "Loved the Great Falls airport!! Who goes to an airport that has leather couches that you can lay down on and take a quick nap!! Beautiful airport!!"

Cons: "You are required to pay to watch the tv. It's free with Delta."

Pros: "Excellent all the way!"
Cons: "It took about 30 minutes to get luggage in Atlanta"

Pros: "easy transfer"
Cons: "had to transfer"

Cons: "Left about 15 minutes late."

Pros: "same as above"
Cons: "same as above"

Pros: "ontime"
Cons: "At least one check-in baggage should be free for the price."

Pros: "Overall service."
Cons: "Impolite Lady Gate Agent."

Cons: "Too cramped, fligjt delay of over an hour"

Cons: "lost our bag, crying babies, uncomfortable plane"

Pros: "Everything was on time"

Pros: "Overall fine"

Cons: "Why should I have to pay to watch tv? I know you don't have to pay on Southwest, Virgin America or Jet Blue. Not sure that a very (and I mean VERY SMALL) snack can be considered food"

Pros: "On time, gates were close together"

Cons: "The delay"

Pros: "Getting from point a to point b."
Cons: "Lack of good free snacks. Not getting free bag checked."

Cons: "Deverted to Newark to get to portland"

Pros: "Good"

Cons: "Never made it so I can't rate it"

Pros: "Everything went smoothly"

Pros: "Large plane very comfortable"
Cons: "Nothing"

Pros: "Staff was great"
Cons: "Second delay in a row"

Cons: "Delays both ways"

Pros: "Everything!"

Pros: "Smoothly and on time"

Cons: "Fine until the unexpected stop but has to be done"

Pros: "Very respectful and loved all the smiling facez"
Cons: "N/A"

Pros: "Excellent choices, comparisons, easy to use, updates"

Pros: "Bigger planes"

Pros: "On time."

Cons: "Prices to watch Tv"

Pros: "All went as planned"
Cons: "Coffee"

Pros: "American Airlines saved the day!"

Pros: "Excellent"

Pros: "On time"

Read more about Delta
COVID-19 information

Safety measures for airlines flying from Illinois to London

Airlines flying from Illinois to London 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 on flights from Illinois to London

Mandatory masks

Masks required on board, masks provided on flights from Illinois to London

Social distancing seating

Middle seats unavailable to book on flights from Illinois to London

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Illinois to London

Book cheap flights from Illinois to London

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5/18
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