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Cheap flights from Glasgow Intl Airport to Illinois from £288

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — ORD
28 Jun — 5 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow Intl to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow Intl to Illinois
Explore the most affordable flight options available from Glasgow Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 May 2026.

Mon 21/920:40
GLA
-
ORD
2 stops28h 35m
Multiple Airlines
Wed 30/922:25
ORD
-
GLA
1 stop9h 00m
Multiple Airlines
Deal found 28/5£518
Mon 21/920:40
GLA
-
ORD
2 stops28h 35m
Multiple Airlines
Sat 26/919:25
ORD
-
GLA
1 stop12h 00m
Multiple Airlines
Deal found 28/5£523
Tue 7/708:20
GLA
-
ORD
2 stops14h 37m
Multiple Airlines
Thu 30/719:25
ORD
-
GLA
1 stop12h 00m
Multiple Airlines
Deal found 27/5£534
Wed 26/807:45
GLA
-
ORD
2 stops15h 12m
Multiple Airlines
Mon 7/922:25
ORD
-
GLA
1 stop9h 00m
Multiple Airlines
Deal found 29/5£537
Wed 16/922:35
GLA
-
ORD
2 stops29h 00m
Multiple Airlines
Wed 23/922:25
ORD
-
GLA
1 stop9h 00m
Multiple Airlines
Deal found 24/5£542
Fri 3/721:25
GLA
-
MDW
2 stops42h 15m
Multiple Airlines
Fri 14/810:20
MDW
-
GLA
1 stop17h 20m
Multiple Airlines
Deal found 27/5£552
Sat 19/907:40
GLA
-
ORD
2 stops16h 35m
Multiple Airlines
Wed 30/922:25
ORD
-
GLA
1 stop9h 00m
Multiple Airlines
Deal found 28/5£576
Sat 19/907:40
GLA
-
ORD
2 stops16h 35m
Multiple Airlines
Sun 27/922:25
ORD
-
GLA
1 stop9h 00m
Multiple Airlines
Deal found 28/5£581
Wed 1/722:35
GLA
-
ORD
2 stops24h 22m
Multiple Airlines
Tue 14/717:35
ORD
-
GLA
1 stop10h 05m
Multiple Airlines
Deal found 28/5£583
Wed 16/909:10
GLA
-
MDW
2 stops15h 01m
KLM
Wed 23/913:14
MDW
-
GLA
2 stops13h 11m
KLM
Deal found 24/5£683
Mon 21/909:10
GLA
-
MDW
2 stops15h 01m
KLM
Tue 29/913:14
MDW
-
GLA
2 stops13h 11m
KLM
Deal found 28/5£684
Mon 21/909:10
GLA
-
MDW
2 stops15h 01m
Multiple Airlines
Mon 28/913:14
MDW
-
GLA
2 stops13h 11m
Multiple Airlines
Deal found 27/5£685

Find flight deals from Glasgow Intl to Illinois

Keep the following information in mind while searching for Glasgow Intl to Illinois flight deals. Data was last updated 29 May 2026.

Round-trip from

£518

One-way from

£288

Popular in

July

Cheapest in

February

Average price

£553
Icelandair
  • Icelandair
  • 21/9-30/9
  • 3 total stops
  • 37h 35m total
  • Glasgow to Illinois
Search Deals
27/9
  • 27/9
  • 3 total stops
  • 39h 05m total
  • Glasgow to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£84 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Glasgow Intl to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 May 2026.
Use the filters below to find and compare flights from Glasgow Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Wed 16/9

11:00-21:35

1 stop16h 35m

Chicago O'Hare Intl

Wed 23/9

22:25-13:25

1 stop9h 00m

£595

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Wed 16/9

06:25-17:20

2 stops16h 55m

Chicago O'Hare Intl

Wed 23/9

13:59-10:30

2 stops14h 31m

£667

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Mon 21/9

13:30-14:15

1 stop30h 45m

Chicago O'Hare Intl

Tue 29/9

16:20-12:55

1 stop14h 35m

£680

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Wed 16/9

09:10-14:30

1 stop11h 20m

Chicago O'Hare Intl

Wed 23/9

14:00-16:10

2 stops20h 10m

£680

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Sun 20/9

17:00-14:30

1 stop27h 30m

Chicago O'Hare Intl

Tue 29/9

12:40-08:25

2 stops13h 45m

£681

GlasgowChicago

GLA - MDW

GLAMDW

Glasgow Intl

Wed 16/9

09:10-18:11

2 stops15h 01m

Chicago Midway

Wed 23/9

18:51-16:10

2 stops15h 19m

£684
Fastest return journey

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Wed 23/9

14:20-18:15

1 stop9h 55m

Chicago O'Hare Intl

Sun 27/9

22:25-13:25

1 stop9h 00m

£686

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Fri 2/10

14:20-21:25

1 stop13h 05m

Chicago O'Hare Intl

Mon 19/10

19:25-13:25

1 stop12h 00m

£687

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Tue 22/9

14:00-20:07

1 stop12h 07m

Chicago O'Hare Intl

Wed 30/9

11:15-10:10

2 stops16h 55m

£699

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Wed 23/9

14:00-07:25

2 stops23h 25m

Chicago O'Hare Intl

Tue 29/9

15:00-10:10

1 stop13h 10m

£699

Flights are sorted by cheapest return flights first.

Deals found on 28/5

Showing 1-10 of 51 resultsSorted by cheapest first
1
2
3
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6

Best time to book a flight from Glasgow Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Glasgow Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Glasgow Intl Airport to Illinois

What is the cheapest month to book a flight from Glasgow Intl Airport to Illinois?

Currently, September is the cheapest month in which you can book a flight from Glasgow Intl Airport to Illinois (average of £54). Flying from Glasgow Intl Airport to Illinois in June is currently the most expensive (average of £493). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Glasgow Intl Airport to Illinois?

How far ahead should I book a flight from Glasgow Intl Airport to Illinois?

Booking 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from Glasgow Intl Airport to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 29 May 2026.
See what other customers who have flown with Aer Lingus,American Airlines, andIcelandair from Glasgow Intl Airport to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,588 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,588 reviews
Aer Lingus
7.3
Good
1,588 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
American Airlines
7.1
Good
11,645 reviews
Aer Lingus
7.3
Good
1,588 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Icelandair
7.0
Good
661 reviews
Aer Lingus
7.3
Good
1,588 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
British Airways
6.7
Okay
8,008 reviews
Aer Lingus
7.3
Good
1,588 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Glasgow Intl Airport to Illinois?

    For as low as £680, British Airways can have you in Illinois from Glasgow Intl Airport in 11h 20m. Airlines will cover a distance of 3663 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Glasgow Intl Airport to Illinois?

    The most popular flight routes from Glasgow Intl Airport to Illinois are Glasgow Intl - Chicago O'Hare Intl, Glasgow Intl - Chicago Midway and Glasgow Intl - Lambert-St Louis.

  • Can I find deals for flights from Glasgow Intl to Illinois that include hotel bookings?

    Yes. In addition to deals on Glasgow Intl to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Glasgow Intl to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow Intl to Illinois.

  • Can I find deals for business class flights from Glasgow Intl to Illinois?

    Yes. Cheapflights offers flight deals from Glasgow Intl to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Glasgow Intl Airport to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Glasgow Intl Airport to Illinois (average of £54). Flying from Glasgow Intl Airport to Illinois in June is currently the most expensive (average of £493). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Glasgow Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Glasgow Intl to Illinois

Discover the top 3 airlines that operate flights from Glasgow Intl to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£395Average£501FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£451Average£602FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£497Average£890FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Glasgow Intl to Illinois?

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Why should you use Cheapflights to find cheap flight tickets from Glasgow Intl to Illinois?

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Can Cheapflights find flights from Glasgow Intl to Illinois with no change fees?

Certainly. Search results for flights to Illinois from Glasgow Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Glasgow Intl to Illinois become cheaper?

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