$244 Find Cheap Flights from Chicago O'Hare Airport to 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 O'Hare Intl to the United Kingdom departing on 5/3. 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 O'Hare Intl to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$658
Edinburgh
Edinburgh1 stop$678
Manchester
Manchester1 stop$667
Birmingham
Birmingham2 stops$707
Belfast
Belfast3 stops$879
Inverness
Inverness1 stop$732
Bristol
Bristol3 stops$717
Aberdeen
Aberdeen3 stops$808
Leeds
Leeds2 stops$822
Liverpool
Liverpool1 stop$875
Cardiff
Cardiff1 stop$1,072
Newquay
Newquay3 stops$985
Exeter
Exeter2 stops$1,048
Grimsby
Grimsby2 stops$1,010
Kirkwall
Kirkwall2 stops$1,366
London
London1 stop$658
Edinburgh
Edinburgh1 stop$678
Manchester
Manchester1 stop$667
Birmingham
Birmingham2 stops$707
Belfast
Belfast3 stops$879
Inverness
Inverness1 stop$732
Bristol
Bristol3 stops$717
Aberdeen
Aberdeen3 stops$808
Leeds
Leeds2 stops$822
Liverpool
Liverpool1 stop$875
Cardiff
Cardiff1 stop$1,072
Newquay
Newquay3 stops$985
Exeter
Exeter2 stops$1,048
Grimsby
Grimsby2 stops$1,010
Kirkwall
Kirkwall2 stops$1,366

Book Cheap O'Hare Intl 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 O'Hare Intl 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 O'Hare Intl to the United Kingdom

Sun, Apr 19 - Tue, Apr 28
Turkish Airlines Logo
8:10 pm - 4:40 pm
ORD
-
STN
38h 30m
1 stop
Turkish Airlines Logo
6:55 am - 9:40 am
STN
-
ORD
32h 45m
1 stop
$658Turkish Airlines
Mon, Apr 27 - Thu, May 14
Turkish Airlines Logo
11:25 am - 9:55 am
ORD
-
LGW
16h 30m
1 stop
Turkish Airlines Logo
5:35 pm - 9:40 am
LGW
-
ORD
22h 05m
1 stop
$659Turkish Airlines
Sat, Aug 22 - Tue, Aug 25
Scandinavian Airlines Logo
7:15 pm - 8:55 am
ORD
-
LHR
31h 40m
2 stops
Scandinavian Airlines Logo
6:40 am - 4:10 pm
LHR
-
ORD
15h 30m
1 stop
$681Scandinavian Airlines
Sat, Aug 22 - Tue, Aug 25
Scandinavian Airlines Logo
7:15 pm - 8:55 am
ORD
-
LHR
31h 40m
2 stops
Scandinavian Airlines Logo
7:05 am - 4:10 pm
LHR
-
ORD
15h 05m
2 stops
$682Scandinavian Airlines
Mon, Sep 21 - Fri, Sep 25
Icelandair Logo
7:25 pm - 1:25 pm
ORD
-
GLA
12h 00m
1 stop
Icelandair Logo
2:20 pm - 6:15 pm
GLA
-
ORD
9h 55m
1 stop
$686Icelandair
Mon, Oct 5 - Fri, Oct 23
Icelandair Logo
7:25 pm - 1:25 pm
ORD
-
GLA
12h 00m
1 stop
Icelandair Logo
2:20 pm - 6:15 pm
GLA
-
ORD
9h 55m
1 stop
$689Icelandair
Mon, Apr 20 - Mon, Apr 27
British Airways Logo
7:05 pm - 1:10 pm
ORD
-
MAN
12h 05m
1 stop
British Airways Logo
6:55 am - 1:50 pm
MAN
-
ORD
12h 55m
1 stop
$695British Airways
Sun, Oct 4 - Wed, Oct 14
British Airways Logo
9:15 pm - 2:50 pm
ORD
-
INV
11h 35m
1 stop
British Airways Logo
7:35 am - 3:55 pm
INV
-
ORD
14h 20m
1 stop
$732British Airways
Tue, Aug 18 - Wed, Aug 26
American Airlines Logo
8:45 pm - 2:25 pm
ORD
-
INV
11h 40m
1 stop
American Airlines Logo
10:35 am - 5:35 pm
INV
-
ORD
13h 00m
1 stop
$741American Airlines
Sun, Oct 4 - Wed, Oct 14
American Airlines Logo
4:45 pm - 2:50 pm
ORD
-
INV
16h 05m
2 stops
American Airlines Logo
7:35 am - 3:00 pm
INV
-
ORD
13h 25m
1 stop
$746American Airlines
Booking Insights

KAYAK's insights & trends for O'Hare Intl to the United Kingdom flights

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

What is the cheapest Chicago O'Hare Intl Airport 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 O'Hare Intl Airport found in the last 72 hours was to London, at $682 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 $682.

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

The average price for all round-trip flights from Chicago O'Hare Intl Airport to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally at night, when round-trip flights cost $833 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 $853.

Can I save money by flying with a layover from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport to the United Kingdom is February, when tickets cost $594 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,204 and $939 respectively.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to United Kingdom?

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

If you are looking for a flight deal from Chicago O'Hare Airport to United Kingdom, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from United Kingdom, Friday is the cheapest day to fly and Monday is the most expensive.

How far in advance should I book a flight from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport to the United Kingdom, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$244
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Chicago O'Hare Airport to Glasgow

Flights from O'Hare Intl to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from O'Hare Intl to the United Kingdom 
Verified travelerFlew with British Airways
ORD
-
LHR
Mar 2026
Take early morning flights to adjust to weather-related delays.
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 O'Hare Airport to 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 O'Hare Airport to United Kingdom.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago O'Hare Airport to 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 O'Hare Airport to 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 O'Hare Airport to 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 O'Hare Airport to 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 O'Hare Airport to United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to the United Kingdom

  • Looking for a cheap flight? 25% of our users found tickets from Chicago O'Hare Airport to the following destinations at these prices or less: London $483 one-way - $831 round-trip

Reviews of the top 5 airlines serving from O'Hare Intl to the United Kingdom

 
Need help choosing which airline to fly with from O'Hare Intl 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 9554 reviews
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
7.3Comfort
Airline reviews

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

4.0 OkayAnonymous, Apr 2026
ORD - BRU
Read more United Airlines reviews

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

Great until we got to FRA. The next trip leg we were put in Business Class where seats had minimal padding!!!! They were awful and United Airlines needs to have their Lufthansa partner up their game or I won’t fly with them again!!

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

Awful. No counter attendants. No dinner offered due to delays.

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

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.

Delays experienced in boarding/take off due to incoming plane delayed. However, the boarding time/depart time in the app was significantly delayed in providing these updates. Usually not updated until an hour after we should have already boarded. Poorly managed.

Moved to earlier flight which unexpectedly had maintenance issues initially indicated as quick fix to ultimately plane changes. Moved back to original flight, also delayed. In all cases customer updates and communication very unclear, no updates on drivers for delays.

Typical AA - late by 90+ mn. Gate changed twice... Changed the departure time 6 times No explanation, no communication on reasons for delay I travel with AA twice a year... and it is consistently very poor.. I will continue to use AA only when i have to.

The gate got changed several times and the flight was delayed over an hour. Awful experience

American continues to decline in their customer service and its beyond disappointing.

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

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.

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.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

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!

The Experience Was Torture Spend a few extra dollars and avoid Icelandair at all costs. There is absolutely no refreshments, no food, no drinks. Only water, coffee, tea are free and at only half a tiny cup. Entertainment is limited selection of films, shows and mostly outdated. The seats are smaller than usual, with no cushion, no pillows, no blankets. First time in my life have I witness an airline asking for donations in spare change for a charity. With all the money Icelandair saves by starving the passenger, they can afford to give this charity on their own.

Iceland air transfer was bad. They lost my luggage and I just received it 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

It was too cold in the plane my feet froze

In general, I've had excellent experiences with Iberia flights and will continue to use them. In this last flight there were two things that didn't go right. I didn't get the kosher meal I had pre-requested when I had checked in on-line. Things worked out OK as we ended up eating the fish and vegetarian choices, which were really good. The other issue was that some movies for me and my wife started fine but after 8-12 minutes the content just switched to something else. The flight attendant reset our entertainment systems, but the problem persisted. We ended up choosing other movies/TV shows that did work fine.

Flight was fine - however my husband's checked in case was damaged, and mine still has not arrived

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.

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Wish the food and overall service was better. They treat Business class passengers same as economy

WiFi wasn’t available to economy until the end of the flight.

Very good staff members with sincere passion and responsibility in their job.

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

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.

Everything you need to know for your flight from O'Hare Intl to the United Kingdom

Information on your arrival and departure airports