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$1,677+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GUM
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$2,137
(United Airlines)

One-way from

$1,677
(Delta)

Popular in

July

Cheapest in

May

Average price

$1,967
Provider with most accurate pricing for Chicago (CHI)-Tamuning Guam Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Tamuning Guam Intl flights.
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From Illinois to Guam
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One-way flight from Illinois to Guam
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Highest demand for flights based on searches. 3% potential increase in price ($85 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. 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 12/19:10 pmORD - GUM
2 stops29h 40mUnited Airlines
Tue 1/137:25 amGUM - ORD
2 stops23h 09mUnited Airlines
Deal found 4/30$1,967
This Delta deal was found by Cheapflights users on 4/30. 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 12/16:00 amORD - GUM
2 stops40h 35mDelta
Sat 1/174:50 pmGUM - ORD
2 stops41h 56mDelta
Deal found 4/30$1,983
This Delta deal was found by Cheapflights users on 4/29. 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 12/16:00 amMDW - GUM
2 stops40h 35mDelta
Sat 1/174:50 pmGUM - MDW
2 stops44h 56mDelta
Deal found 4/29$2,528
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Thu 5/86:00 amSTL - GUM
2 stops21h 15mUnited Airlines
Tue 5/137:00 amGUM - STL
2 stops24h 33mUnited Airlines
Deal found 4/30$2,827

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 May 1, 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

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Sun 7/20

9:30 am-6:05 pm

1 stop17h 35m

Tamuning Guam Intl

Sat 8/9

7:00 pm-3:20 pm

1 stop35h 20m

$2,137

ChicagoTamuning

ORD - GUM

ORDGUM

Chicago O'Hare Intl

Sat 6/14

6:15 pm-3:15 pm

2 stops30h 00m

Tamuning Guam Intl

Sat 6/21

5:00 pm-10:09 pm

2 stops44h 09m

$2,297

ChicagoTamuning

MDW - GUM

MDWGUM

Chicago Midway

Fri 8/8

9:25 am-3:15 pm

2 stops38h 50m

Tamuning Guam Intl

Sun 8/17

5:00 pm-9:47 pm

2 stops43h 47m

$2,632

ChicagoTamuning

MDW - GUM

MDWGUM

Chicago Midway

Fri 6/13

9:21 am-3:15 pm

2 stops38h 54m

$1,677

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 May 1, 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.

Rainfall in Guam by month

Plan your trip to Guam by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Guam ranges from 2.6 - 14.4 inches per month. August is typically the wettest month, when rainfall can reach 14.4 in. March is typically the driest time to visit Guam when rainfall is around 2.6 in.

Temperature in Guam by month

Plan your trip to Guam by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Guam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Guam

Get insights into the airlines that provide service to Guam. 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 Guam. Reviews last updated May 1, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Illinois to Guam by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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.

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,916Average$2,202FlexibilityNo cancel feeOn-time69%

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