$303 Find Cheap Flights from Chicago to Cambridge - Compare and Save

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 Cambridge departing on 8/23. 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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Everything you should know

Cheapest round-trip
$673
Typical prices: $598-$878
Scandinavian Airlines
Fri 10/9Mon 10/12
ORD - LHR • 2 stops
Cheapest non-stop
$759
Typical prices: $664-$957
British Airways
Tue 9/29Mon 10/5
ORD - LHR • Non-stop
Arrival airport
You can't fly directly to Cambridge. It is served by London (LON), located 49.3 miles from Cambridge.
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Flight Deals

Cheap Flights from Chicago to Cambridge (CHI-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Cambridge 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 Cambridge

Fri, Oct 9 - Mon, Oct 12
Scandinavian Airlines Logo
7:15 pm - 12:55 pmORD  Chicago O'Hare Intl-LHR London Heathrow
35h 40m2 stops Kastrup Copenhagen Stockholm Arlanda
Scandinavian Airlines Logo
6:40 am - 4:10 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
15h 30m1 stop Kastrup Copenhagen
$673Scandinavian Airlines
Mon, Nov 23 - Thu, Nov 26
Scandinavian Airlines Logo
7:15 pm - 8:55 amORD  Chicago O'Hare Intl-LHR London Heathrow
31h 40m2 stops Kastrup Copenhagen Stockholm Arlanda
Scandinavian Airlines Logo
6:40 am - 4:45 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
16h 05m1 stop Kastrup Copenhagen
$673Scandinavian Airlines
Tue, Oct 20 - Wed, Oct 28
Multiple Airlines Logo
6:05 am - 10:00 amORD  Chicago O'Hare Intl-LGW London Gatwick
21h 55m1 stop Orlando
Multiple Airlines Logo
10:10 am - 8:21 amLGW  London Gatwick-ORD Chicago O'Hare Intl
27h 11m1 stop Orlando
$673Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Multiple Airlines Logo
7:25 pm - 11:20 pmORD  Chicago O'Hare Intl-STN London Stansted
21h 55m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
6:30 am - 6:15 pmSTN  London Stansted-ORD Chicago O'Hare Intl
17h 45m2 stops Dublin Reykjavik Keflavik Intl
$680Multiple Airlines
Thu, Oct 22 - Thu, Oct 29
Icelandair Logo
7:25 pm - 2:40 pmORD  Chicago O'Hare Intl-LGW London Gatwick
13h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:55 am - 6:20 pmLGW  London Gatwick-ORD Chicago O'Hare Intl
11h 25m1 stop Reykjavik Keflavik Intl
$685Icelandair
Thu, Oct 22 - Thu, Oct 29
Icelandair Logo
7:25 pm - 11:55 amORD  Chicago O'Hare Intl-LHR London Heathrow
10h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 pm - 6:20 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
11h 05m1 stop Reykjavik Keflavik Intl
$686Icelandair
Wed, Oct 21 - Thu, Oct 29
TAP AIR PORTUGAL Logo
6:00 pm - 10:00 pmORD  Chicago O'Hare Intl-LHR London Heathrow
22h 00m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
7:55 pm - 4:30 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
25h 35m1 stop Lisbon Humberto Delgado
$701TAP AIR PORTUGAL
Thu, Oct 1 - Tue, Oct 6
TAP AIR PORTUGAL Logo
6:00 pm - 12:45 pmORD  Chicago O'Hare Intl-LHR London Heathrow
12h 45m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
7:50 pm - 4:00 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
26h 10m1 stop Lisbon Humberto Delgado
$701TAP AIR PORTUGAL
Mon, Nov 2 - Thu, Nov 5
United Airlines Logo
8:50 pm - 8:30 amORD  Chicago O'Hare Intl-LHR London Heathrow
29h 40m1 stop Toronto Pearson Intl
United Airlines Logo
6:50 am - 12:10 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
11h 20m1 stop Brussels Bruxelles-National
$730United Airlines
Sun, Nov 8 - Wed, Nov 11
United Airlines Logo
8:50 pm - 8:30 amORD  Chicago O'Hare Intl-LHR London Heathrow
29h 40m1 stop Toronto Pearson Intl
United Airlines Logo
6:50 am - 12:10 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
11h 20m1 stop Brussels Bruxelles-National
$730United Airlines
Useful Info

Good to know

Cheapest flight

$303
Flight from Chicago O'Hare Airport to London Stansted Airport

When to book flights from Chicago to Cambridge

Are your dates flexible? Find out the best times to travel from Chicago to Cambridge based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Chicago to Cambridge: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Chicago to Cambridge 
Verified travelerFlew with British Airways-Mar 2026
Take early morning flights to adjust to weather-related delays.
Verified travelerFlew with British Airways-Jun 2025
Get a wheel chair if you have difficulty walking
JoeFlew with Iberia-Apr 2025
Get there early. Nice airport options while you wait.
Verified travelerFlew with Iberia-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-Jan 2025
Anticipate delays, prepare for long walks through Heathrow to baggage claim or for connections.
KariFlew with British Airways-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-Dec 2023
Find a flight where you are allowed to choose your seats before the day of boarding for anything international.

FAQs for booking flights from Chicago to Cambridge

  • Which airports will I be using when flying from Chicago to Cambridge?

    When flying out of Chicago you’ll be using one of these airports: Chicago Midway or Chicago O'Hare Intl. Cambridge does not have its own airport so you’ll be flying into nearby London All airports airport, which is 49.3 mi away.

  • What’s the cheapest day of the week to fly between Chicago and Cambridge?

    Consider leaving on a Saturday and avoid Wednesdays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Fridays and the most expensive ones on Saturdays.

  • How does KAYAK find such low prices on flights from Chicago to Cambridge?

    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 Cambridge.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cambridge from Chicago 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 Cambridge?

    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 to Cambridge with an airline and back to Chicago with another airline.

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

    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 to Cambridge from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Chicago to Cambridge?

    In the last 5 days, the cheapest one-way ticket between Chicago and Cambridge found on KAYAK was with Finnair for $279. Air Canada offered a round-trip connection from $362 and TAP AIR PORTUGAL from $428.

Top tips for finding cheap flights from Chicago to Cambridge

  • There is no airport in Cambridge. Instead, you’ll be flying into London All airports when flying between Chicago and Cambridge.
  • The cheapest flight from Chicago to Cambridge was found 73 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is February.

Reviews of the top 5 airlines serving Chicago to Cambridge

 
Need help choosing which airline to fly with from Chicago to Cambridge? 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 10086 reviews
7.7Boarding
8.1Crew
7.3Comfort
6.7Food
7.1Entertainment
Airline reviews

Old 757 with poor entertainment system. United no longer partners with United for free text and email. O'Hara an absolute disaster! Limited gates clauses two hour delay. Unfortunately this appears to be the norm.

2.0 MediocreRichard, Aug 2026
Read more United Airlines reviews

Old 757 with poor entertainment system. United no longer partners with United for free text and email. O'Hara an absolute disaster! Limited gates clauses two hour delay. Unfortunately this appears to be the norm.

It was a good experience, unfortunately my checked baggages were come late and not arrived on time.

Very stressful to locate United Airline boarding area, delayed flight, changing boarding area again to another location with all tiredness 😩. But flying was fine.

It was hot and not as comfortable as the flight to Chicago. Must have been a different plane that needs to be worked on or replaced.

The boarding of took of late.The presentation of the food was horrable as was the tast of the food was cold and tastless.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

Horrible! I paid for a straight flight from Chicago to London. A week before trip it changed and now I had a connecting flight. Our flight was delayed an hour and a half because our flight crew was still flying in from CA. Forty passengers ran from one plane to the next. The next United Airlines flight was delayed two to three hours because of mechanical difficulties. They had to ready another plane which took time. I missed my scheduled excursion in London. 😢

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

All good, useful to have the united app from check in to boarding

The flight was clean and on time, the crew were all very nice and we got the seats we booked. Plenty of food and beverages. The seats are too close so it’s very difficult to try and sleep comfortably.

Our flight was cancelled while we are on our way to the airport. So, no notice. We were rescheduled to another airline with a 2 hour later takeoff and so arrived at our destination on time. We pre-paid American Airlines $190 to upgrade our seats. No refund. So no use for AA or Kayak.

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

It was good, the staff was friendly and it was a typical flight to Europe.

First leg of the flight was delayed by 2 1/2 hours with very little communication. We scrambled trying to talk to airline people at the airport about our connecting flight and received all different answers and no help. We ended up at our destination almost five hours when we were supposed to arrive. We ended up missing an afternoon that was already paid for due to the delays.

Flight left 2 hours late as it had to wait for luggage from American to be loaded. This cause me to miss my flight to Athens. The USB ports were broken so by the time I arrived in London my phone was out of battery.

Our 9:00 pm flight was cancelled on our way too the airport!!! No reason was given too us!!! So stressful!!! I couldn’t believe it!!! Thank goodness we arrived 6 hours ahead of time. We were able too get on an earlier flight. Than everything was great!!

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

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

It was a wonderful experience with great food, great staff, and no difficulties boarding!

I was in business class for the 8 hour flight where: 1. The WiFi did not work 2. The entertainment system did not work 3. We were told there were no hot drinks for the entire flight

Paid for “extra room” selected seat. Wasn’t a benefit. Also was in aisle and was bumped almost every time attendants walked down aisle. Should have saved the assigned seat money and let them select.

Alaska located my mother, aware that she had mobility issues and they seated her closer to the door. She and I were seated together so I felt more secure to be able to assist her. The desk attendant reviewed what steps to take when boarding. Allowed us to board first, we loved that. I was allowed time to help her board slowly, seat her, put all her things in their place before the crowds came through. These small details made me want to travel Alaska more when possible.

I bought the ticket through Iberian, but I was unable to check in using my code. American wouldn’t let me check in and Iberian counter was closed.

The comfort level was low, but the staff was nice

Bad. Requested a diabetic meal. Was served everything i couldnt eat. So i did not estbthe whole flight dinner / breakfast. Sad and uncomfortable.

The WiFi wasn’t working, so no one could watch any entertainment for 5 hours. The plane also was delayed and did not leave, nor did the staff prioritize those with connecting flights to de-board first. Everyone with a connecting flight to Munich missed their flight by 5 minutes. Then the next flight to Munich was 14 hours later. The airport could not compensate us because the closest hotel was about 2 hours away. This did not seem like the truth. I was not pleased with this traveling experience.

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Damage May baggage and I report the airport agant and they see it

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

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

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Great crew, bumpy landings, two-hour wait for baggage with no communication or explanation. Will not fly again!

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Comfortable seats, good service overall. The food could’ve been a little bit better. The boarding process was slightly chaotic and in fairness, not all of that is related to the performance of British Airways.

They gave away my business class seat. No explanation and no apology. Told me I had to take the downgrade if I wanted to get to India. Then no WiFi for 10 hours. Just ridiculous. We should not work with this company at Deloitte. They don’t know how to run a business.

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Overall ok. Best part has always been the sundae dessert.

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

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Had a nice little suite although I couldn’t close the door (but I didn’t ask anyone to help). 5K is a nice seat and very private (you look in on first class). Enjoyable flight and nice crew.

Everything you need to know for your flight from Chicago to Cambridge

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