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$630+ Cheap flights from Illinois to Guam

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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GUM
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Illinois to Guam

Keep the following information in mind while searching for Illinois to Guam flight deals. Data was last updated September 15, 2025.

Round-trip from

$999
(United Airlines)

One-way from

$630
(Kiwi.com)
From Illinois to Guam
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One-way flight from Illinois to Guam
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Find flight deals from Illinois to Guam

Cheapest flights from Illinois to Guam
Explore the most affordable flight options available from Illinois to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/285:29 pmSTL - GUM
2 stops54h 16mUnited Airlines
Tue 12/27:40 amGUM - STL
2 stops24h 48mUnited Airlines
Deal found 9/14$999
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:34 pmMDW - GUM
2 stops37h 31mDelta
Fri 1/161:00 amGUM - MDW
2 stops36h 46mDelta
Deal found 9/15$1,983
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:50 pmORD - GUM
2 stops37h 15mDelta
Fri 1/161:00 amGUM - ORD
2 stops38h 44mDelta
Deal found 9/15$1,983
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/11:10 pmORD - GUM
1 stop23h 10mUnited Airlines
Tue 1/137:20 pmGUM - ORD
1 stop35h 50mUnited Airlines
Deal found 9/15$2,000
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2712:53 pmORD - GUM
2 stops48h 32mUnited Airlines
Tue 9/307:10 amGUM - ORD
2 stops27h 45mUnited Airlines
Deal found 9/14$2,009
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amORD - GUM
2 stops20h 50mUnited Airlines
Thu 12/257:40 amGUM - ORD
2 stops29h 52mUnited Airlines
Deal found 9/14$2,017
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/11:10 pmORD - GUM
1 stop23h 10mUnited Airlines
Sat 1/177:40 amGUM - ORD
2 stops38h 45mUnited Airlines
Deal found 9/15$2,026
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/141:10 pmORD - GUM
1 stop23h 10mUnited Airlines
Sat 1/177:20 pmGUM - ORD
1 stop35h 50mUnited Airlines
Deal found 9/15$2,050
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amORD - GUM
2 stops20h 50mUnited Airlines
Fri 12/267:40 amGUM - ORD
2 stops22h 52mUnited Airlines
Deal found 9/14$2,067
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:23 pmORD - GUM
2 stops29h 37mUnited Airlines
Sun 12/287:40 amGUM - ORD
2 stops21h 35mUnited Airlines
Deal found 9/14$2,117
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:47 pmMDW - GUM
2 stops42h 18mDelta
Tue 1/134:50 pmGUM - MDW
2 stops44h 56mDelta
Deal found 9/13$2,131
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/219:05 pmORD - GUM
2 stops29h 55mUnited Airlines
Mon 12/297:40 amGUM - ORD
2 stops19h 45mUnited Airlines
Deal found 9/14$2,187

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Guam 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 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Illinois to Guam that are best for you.

Fly from

Illinois

Fly to

Guam

Route

Depart

Return

Price

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 11/28

5:29 pm-3:45 pm

2 stops54h 16m

Tamuning Guam Intl

Tue 12/2

7:40 am-8:57 pm

2 stops29h 17m

$999

ChicagoTamuning

MDW - GUM

MDWGUM

Chicago Midway

Mon 12/1

6:00 am-11:05 pm

2 stops25h 05m

Tamuning Guam Intl

Tue 1/13

4:50 pm-9:46 pm

2 stops44h 56m

$1,983

ChicagoTamuning

MDW - GUM

MDWGUM

Chicago Midway

Mon 12/1

5:34 pm-11:05 pm

2 stops37h 31m

Tamuning Guam Intl

Fri 1/16

1:00 am-9:46 pm

2 stops36h 46m

$1,983

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Mon 12/1

5:50 pm-11:05 pm

2 stops37h 15m

Tamuning Guam Intl

Fri 1/16

1:00 am-11:44 pm

2 stops38h 44m

$1,983

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Mon 12/1

1:10 pm-4:20 am

1 stop23h 10m

Tamuning Guam Intl

Tue 1/13

7:20 pm-3:10 pm

1 stop35h 50m

$2,000

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Mon 12/1

1:10 pm-4:20 am

1 stop23h 10m

Tamuning Guam Intl

Sat 1/17

7:20 pm-3:10 pm

1 stop35h 50m

$2,000

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Sat 9/27

12:53 pm-4:25 am

2 stops48h 32m

Tamuning Guam Intl

Tue 9/30

7:10 am-7:55 pm

2 stops27h 45m

$2,009

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Wed 12/17

6:00 am-6:50 pm

2 stops20h 50m

Tamuning Guam Intl

Mon 12/29

7:40 am-2:55 pm

2 stops23h 15m

$2,017

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Sat 2/14

5:45 am-7:05 pm

2 stops21h 20m

Tamuning Guam Intl

Fri 2/20

7:20 pm-3:10 pm

1 stop35h 50m

$2,042

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Sun 12/14

1:10 pm-4:20 am

1 stop23h 10m

Tamuning Guam Intl

Sat 1/17

7:20 pm-3:10 pm

1 stop35h 50m

$2,050

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 17 results
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Best time to book a flight from Illinois to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from Illinois with our price prediction graph.
Estimated round-trip 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 Illinois to Guam

What is the cheapest time of day to fly from IL to GU?

Find hourly flight availability from Illinois to Guam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Guam as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Guam. 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 Illinois to Guam?

    Airlines like United Airlines and Delta fly from Illinois to Guam in about 25h 05m. The time it takes to get you to your destination can typically vary by up to 29h 11m. There are 7360 mi between Illinois and Guam. This flight may include one or multiple stops.

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

    Yes. In addition to deals on Illinois to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Guam?

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

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

    Yes. Cheapflights offers flight deals from Illinois to Guam 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 Illinois to Guam?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Guam (average of $1,977). Flying from Illinois to Guam in May is currently the most expensive (average of $2,214). 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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Top airline flying from Illinois to Guam

Discover the top airline that operate flights from Illinois to Guam. 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 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,916Average$2,226FlexibilityNo cancel feeOn-time69%

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