How long is the flight from O'ahu to Illinois?

A quick flight from O'ahu to Illinois can take about 10h 53m. Delta provides one of the quickest options available for as low as $421. O'ahu and Illinois are separated by a distance of 4120 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from O'ahu to Illinois one-way?

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $211. However, be on the lookout for offers from Alaska Airlines and Hawaiian Airlines, as they are both options that can get you from O'ahu to Illinois for a low price.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Can I find deals for flights from O'ahu to Illinois that include hotel bookings?

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

How can I find direct flights from O'ahu to Illinois?

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

Can I find deals for business class flights from O'ahu to Illinois?

Yes. Cheapflights offers flight deals from O'ahu 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.

$211+ Flights from O'ahu to Illinois

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from O'ahu to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from O'ahu to Illinois

Cheapest flights from O'ahu to Illinois
Explore the most affordable flight options available from O'ahu to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2025.

Thu 12/2511:28 pmHNL - ORD

1 stop11h 09mMultiple Airlines

Sun 1/119:00 amORD - HNL

1 stop31h 48mMultiple Airlines

Deal found 12/19

$520

Wed 12/2412:40 pmHNL - ORD

1 stop21h 57mMultiple Airlines

Sun 1/119:00 amORD - HNL

1 stop31h 48mMultiple Airlines

Deal found 12/19

$530

Mon 12/228:30 pmHNL - ORD

1 stop11h 47mUnited Airlines

Sun 1/1110:41 amORD - HNL

1 stop14h 27mUnited Airlines

Deal found 12/19

$549

Thu 12/256:05 pmHNL - ORD

Nonstop8h 11mUnited Airlines

Sun 1/111:00 pmORD - HNL

1 stop12h 08mUnited Airlines

Deal found 12/19

$560

Tue 12/238:10 amHNL - ORD

1 stop11h 49mDelta

Mon 1/126:50 amORD - HNL

1 stop12h 34mDelta

Deal found 12/19

$570

Tue 12/236:10 pmHNL - STL

1 stop13h 02mDelta

Tue 12/307:20 amSTL - HNL

2 stops18h 40mDelta

Deal found 12/21

$590

Mon 12/221:59 pmHNL - ORD

2 stops15h 26mDelta

Sun 1/116:15 amORD - HNL

1 stop12h 56mDelta

Deal found 12/19

$602

Sat 12/2011:35 pmHNL - STL

2 stops17h 59mDelta

Tue 12/307:20 amSTL - HNL

2 stops18h 40mDelta

Deal found 12/20

$626

Sat 12/2711:28 pmHNL - ORD

1 stop11h 09mMultiple Airlines

Tue 1/276:06 pmORD - HNL

1 stop21h 05mMultiple Airlines

Deal found 12/20

$633

Sat 12/276:30 pmHNL - STL

1 stop13h 51mDelta

Thu 1/87:00 amSTL - HNL

1 stop12h 56mDelta

Deal found 12/20

$641

Sat 12/278:00 amHNL - STL

1 stop11h 51mAmerican Airlines

Thu 1/811:55 amSTL - HNL

2 stops14h 48mAmerican Airlines

Deal found 12/20

$647

Tue 12/2311:35 pmHNL - STL

2 stops17h 59mDelta

Mon 12/297:20 amSTL - HNL

2 stops18h 40mDelta

Deal found 12/22

$705

Best flights from O'ahu to Illinois
Discover carefully curated flight deals from O'ahu to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 22, 2025.

Thu 1/298:17 amHNL - ORD

1 stop11h 20mMultiple Airlines

Mon 2/29:00 amORD - HNL

1 stop13h 53mMultiple Airlines

Deal found 12/18

$381

Thu 2/197:45 amHNL - ORD

1 stop12h 07mDelta

Mon 2/237:40 amORD - HNL

2 stops17h 48mDelta

Deal found 12/19

$389

Sun 1/185:00 pmHNL - ORD

1 stop12h 43mUnited Airlines

Sun 1/258:45 amORD - HNL

1 stop11h 58mUnited Airlines

Deal found 12/19

$406

Fri 1/2311:00 pmHNL - STL

1 stop10h 53mAmerican Airlines

Tue 1/277:45 amSTL - HNL

1 stop11h 44mAmerican Airlines

Deal found 12/21

$421

Mon 1/195:15 pmHNL - ORD

1 stop11h 25mDelta

Tue 1/277:30 amORD - HNL

1 stop13h 35mDelta

Deal found 12/19

$403

Fri 1/2311:00 pmHNL - STL

1 stop10h 53mAmerican Airlines

Mon 1/2611:55 amSTL - HNL

2 stops14h 48mAmerican Airlines

Deal found 12/20

$427

Thu 1/2911:59 pmHNL - STL

1 stop18h 47mMultiple Airlines

Thu 2/52:50 pmSTL - HNL

1 stop26h 24mMultiple Airlines

Deal found 12/20

$452

Fri 1/239:35 pmHNL - STL

2 stops12h 13mDelta

Tue 1/276:10 amSTL - HNL

2 stops14h 55mDelta

Deal found 12/21

$413

Thu 1/295:15 pmHNL - ORD

2 stops16h 03mDelta

Sat 1/317:30 amORD - HNL

2 stops17h 58mDelta

Deal found 12/19

$414

Thu 1/229:46 pmHNL - STL

1 stop12h 08mMultiple Airlines

Mon 1/262:50 pmSTL - HNL

1 stop27h 13mMultiple Airlines

Deal found 12/21

$462

Tue 2/35:15 pmHNL - ORD

2 stops15h 58mDelta

Fri 2/67:30 amORD - HNL

2 stops17h 58mDelta

Deal found 12/19

$414

Thu 1/154:44 pmHNL - STL

1 stop12h 55mDelta

Mon 1/196:35 amSTL - HNL

1 stop12h 49mDelta

Deal found 12/21

$421

Fri 2/1310:15 amHNL - MDW

2 stops30h 53mMultiple Airlines

Sun 2/223:21 pmMDW - HNL

1 stop23h 54mMultiple Airlines

Deal found 12/21

$524

Fri 1/239:35 pmHNL - STL

2 stops14h 21mDelta

Mon 1/266:35 amSTL - HNL

1 stop12h 49mDelta

Deal found 12/20

$427

Wed 1/2110:50 pmHNL - MLI

2 stops18h 46mUnited Airlines

Sun 1/255:29 pmMLI - HNL

2 stops25h 03mUnited Airlines

Deal found 12/19

$726

Thu 1/225:15 pmHNL - MDW

1 stop11h 53mDelta

Thu 1/296:00 amMDW - HNL

1 stop13h 10mDelta

Deal found 12/20

$427

Thu 1/298:30 pmHNL - MLI

2 stops20h 04mUnited Airlines

Mon 2/25:29 pmMLI - HNL

2 stops25h 03mUnited Airlines

Deal found 12/20

$732

Sun 1/187:40 amHNL - RFD

2 stops29h 46mMultiple Airlines

Wed 1/212:05 pmRFD - HNL

1 stop24h 55mMultiple Airlines

Deal found 12/20

$610

Sun 1/184:44 pmHNL - MDW

1 stop12h 08mDelta

Sun 1/256:00 amMDW - HNL

1 stop13h 10mDelta

Deal found 12/20

$427

Mon 2/234:45 pmHNL - ORD

1 stop12h 56mDelta

Fri 3/62:20 pmORD - HNL

1 stop11h 34mDelta

Deal found 12/19

$427

Thu 1/295:15 pmHNL - MDW

1 stop11h 53mDelta

Wed 2/49:32 amMDW - HNL

2 stops15h 56mDelta

Deal found 12/20

$429

Fri 2/139:40 pmHNL - RFD

2 stops34h 11mMultiple Airlines

Sun 2/2212:41 pmRFD - HNL

1 stop13h 43mMultiple Airlines

Deal found 12/21

$718

Thu 1/224:44 pmHNL - ORD

1 stop12h 57mDelta

Tue 1/278:50 amORD - HNL

2 stops16h 38mDelta

Deal found 12/20

$429

Tue 1/135:15 pmHNL - ORD

1 stop11h 25mDelta

Tue 1/207:30 amORD - HNL

2 stops17h 58mDelta

Deal found 12/21

$429

Thu 1/2910:30 pmHNL - ORD

1 stop10h 52mDelta

Wed 2/46:50 amORD - HNL

2 stops18h 38mDelta

Deal found 12/20

$429

Wed 1/284:15 pmHNL - RFD

1 stop16h 19mMultiple Airlines

Wed 2/42:05 pmRFD - HNL

1 stop24h 55mMultiple Airlines

Deal found 12/21

$853

Sun 1/185:15 pmHNL - ORD

1 stop11h 25mDelta

Sun 1/257:30 amORD - HNL

2 stops17h 58mDelta

Deal found 12/20

$433

Thu 1/2910:03 amHNL - RFD

1 stop27h 23mMultiple Airlines

Wed 2/42:05 pmRFD - HNL

1 stop24h 55mMultiple Airlines

Deal found 12/20

$854

Wed 1/281:55 pmHNL - MDW

2 stops14h 57mDelta

Wed 2/49:32 amMDW - HNL

2 stops15h 56mDelta

Deal found 12/21

$434

Thu 1/291:17 pmHNL - STL

2 stops16h 22mDelta

Thu 2/56:35 amSTL - HNL

1 stop12h 40mDelta

Deal found 12/20

$475

Last-minute flights from O'ahu to Illinois
Discover last-minute flight deals from O'ahu to Illinois. Data last updated December 22, 2025 and is based on user searches.

Thu 1/155:00 pmHNL - ORD

1 stop12h 43mUnited Airlines

Thu 1/227:00 amORD - HNL

1 stop13h 43mUnited Airlines

Deal found 12/19

$375

Thu 1/157:00 pmHNL - ORD

Nonstop8h 00mAmerican Airlines

Thu 1/2210:00 amORD - HNL

Nonstop9h 21mAmerican Airlines

Deal found 12/19

$380

Thu 1/151:17 pmHNL - ORD

2 stops16h 24mDelta

Thu 1/227:30 amORD - HNL

2 stops17h 58mDelta

Deal found 12/19

$394

Thu 1/159:50 pmHNL - ORD

1 stop11h 20mHawaiian Airlines

Thu 1/229:00 amORD - HNL

1 stop13h 53mHawaiian Airlines

Deal found 12/19

$397

Mon 1/195:15 pmHNL - ORD

1 stop11h 25mDelta

Tue 1/277:30 amORD - HNL

1 stop13h 35mDelta

Deal found 12/19

$403

Wed 1/2111:16 pmHNL - ORD

1 stop11h 13mMultiple Airlines

Sun 1/256:06 pmORD - HNL

1 stop21h 05mMultiple Airlines

Deal found 12/21

$389

Wed 1/2111:16 pmHNL - ORD

1 stop11h 13mMultiple Airlines

Wed 2/46:06 pmORD - HNL

1 stop29h 50mMultiple Airlines

Deal found 12/21

$402

Thu 1/2211:16 pmHNL - ORD

1 stop11h 13mHawaiian Airlines

Thu 1/298:00 amORD - HNL

1 stop18h 08mHawaiian Airlines

Deal found 12/21

$371

Fri 1/239:35 pmHNL - STL

2 stops12h 13mDelta

Tue 1/276:10 amSTL - HNL

2 stops14h 55mDelta

Deal found 12/21

$413

Wed 1/2811:16 pmHNL - ORD

1 stop11h 13mAlaska Airlines

Wed 2/49:00 amORD - HNL

1 stop13h 53mAlaska Airlines

Deal found 12/21

$370

Thu 1/298:17 amHNL - ORD

1 stop11h 20mMultiple Airlines

Mon 2/29:00 amORD - HNL

1 stop13h 53mMultiple Airlines

Deal found 12/18

$381

Thu 1/2912:58 pmHNL - ORD

1 stop21h 31mMultiple Airlines

Sat 1/318:00 amORD - HNL

1 stop31h 18mMultiple Airlines

Deal found 12/19

$399

One-way flights from O'ahu to Illinois
Search for one-way flight options from O'ahu to Illinois. Find affordable one-way fares based on user searches. Data last updated December 22, 2025.

Fri 1/3011:00 pmHNL - STL

1 stop10h 53mAmerican Airlines

Deal found 12/21

$211

Sat 2/78:00 amHNL - STL

1 stop25h 54mMultiple Airlines

Deal found 12/21

$257

Tue 1/272:44 pmHNL - ORD

3 stops23h 08mMultiple Airlines

Deal found 12/21

$263

Mon 1/128:17 amHNL - MDW

3 stops35h 45mMultiple Airlines

Deal found 12/20

$264

Mon 1/128:17 amHNL - ORD

3 stops54h 07mMultiple Airlines

Deal found 12/20

$264

Tue 1/1310:03 amHNL - RFD

1 stop23h 12mMultiple Airlines

Deal found 12/20

$265

Thu 3/1910:40 pmHNL - ORD

2 stops17h 54mDelta

Deal found 12/20

$265

Sun 1/186:05 pmHNL - ORD

Nonstop8h 11mUnited Airlines

Deal found 12/20

$266

Thu 1/229:38 pmHNL - ORD

3 stops21h 45mMultiple Airlines

Deal found 12/19

$267

Tue 3/176:00 pmHNL - ORD

Nonstop8h 04mAmerican Airlines

Deal found 12/19

$268

Mon 1/192:20 pmHNL - ORD

3 stops52h 18mMultiple Airlines

Deal found 12/18

$269

Sun 1/1811:59 pmHNL - ORD

3 stops42h 39mMultiple Airlines

Deal found 12/20

$271

Find flight deals from O'ahu to Illinois

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$366 (SmartFares)
One-way from	$211 (American Airlines)
Popular in	July
Cheapest in	September
Average price	$741
Good round-trip deal	$677 or less
Good one-way deal	$366 or less

Provider with most accurate pricing for Honolulu-Chicago (CHI) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Honolulu-Chicago (CHI) flights.

Search Deals

From O'ahu to Illinois

Search Deals

One-way flight from O'ahu to Illinois

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($95 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from O'ahu to Illinois.

Search Deals

Price to beat on a one-way flight from O'ahu to Illinois.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

HonoluluChicago

HNL - ORD

HNLORD

Honolulu

Thu 1/29

8:17 am-11:37 pm

1 stop11h 20m

Chicago O'Hare Intl

Mon 2/2

9:00 am-6:53 pm

1 stop13h 53m

$381

HonoluluChicago

HNL - ORD

HNLORD

Honolulu

Thu 2/19

7:45 am-11:52 pm

1 stop12h 07m

Chicago O'Hare Intl

Mon 2/23

7:40 am-9:28 pm

2 stops17h 48m

$389

HonoluluChicago

HNL - ORD

HNLORD

Honolulu

Mon 1/19

5:15 pm-8:40 am

1 stop11h 25m

Chicago O'Hare Intl

Tue 1/27

7:30 am-5:05 pm

1 stop13h 35m

$403

HonoluluChicago

HNL - ORD

HNLORD

Honolulu

Sun 1/18

5:00 pm-9:43 am

1 stop12h 43m

Chicago O'Hare Intl

Sun 1/25

8:45 am-4:43 pm

1 stop11h 58m

$406

HonoluluSt. Louis

HNL - STL

HNLSTL

Honolulu

Fri 1/23

9:35 pm-1:48 pm

2 stops12h 13m

Lambert-St Louis

Tue 1/27

6:10 am-5:05 pm

2 stops14h 55m

$413

HonoluluChicago

HNL - ORD

HNLORD

Honolulu

Thu 1/29

5:15 pm-1:18 pm

2 stops16h 03m

Chicago O'Hare Intl

Sat 1/31

7:30 am-9:28 pm

2 stops17h 58m

$414

HonoluluChicago

HNL - ORD

HNLORD

Honolulu

Tue 2/3

5:15 pm-1:13 pm

2 stops15h 58m

Chicago O'Hare Intl

Fri 2/6

7:30 am-9:28 pm

2 stops17h 58m

$414

HonoluluSt. Louis

HNL - STL

HNLSTL

Honolulu

Fri 1/23

11:00 pm-1:53 pm

1 stop10h 53m

Lambert-St Louis

Tue 1/27

7:45 am-3:29 pm

1 stop11h 44m

$421

HonoluluSt. Louis

HNL - STL

HNLSTL

Honolulu

Thu 1/15

4:44 pm-9:39 am

1 stop12h 55m

Lambert-St Louis

Mon 1/19

6:35 am-3:24 pm

1 stop12h 49m

$421

HonoluluSt. Louis

HNL - STL

HNLSTL

Honolulu

Fri 1/23

11:00 pm-1:53 pm

1 stop10h 53m

Lambert-St Louis

Mon 1/26

11:55 am-10:43 pm

2 stops14h 48m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 60 results

...

Best time to book a flight from O'ahu to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from O'ahu 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 O'ahu to Illinois

What is the cheapest month to book a flight from O'ahu to Illinois?

Currently, August is the cheapest month in which you can book a flight from O'ahu to Illinois (average of $253). Flying from O'ahu to Illinois in July is currently the most expensive (average of $719). 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.

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

When flying from O'ahu to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 32% versus a flight in the afternoon.

What is the cheapest day to fly from O'ahu to Illinois?

Travelers seeking maximum savings on their O'ahu to Illinois flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from O'ahu to Illinois

The most flights from zzFUW to USIL are scheduled on a Monday (7 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Illinois

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from O'ahu to Illinois by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

11,499 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Alaska Airlines

8.0

Very good

11,499 reviews

Alaska Airlines

8.0

Very good

11,499 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Southwest

8.0

Very good

4,254 reviews

Alaska Airlines

8.0

Very good

11,499 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Delta

7.9

Good

8,014 reviews

Alaska Airlines

8.0

Very good

11,499 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

United Airlines

7.4

Good

9,102 reviews

Alaska Airlines

8.0

Very good

11,499 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

American Airlines

7.2

Good

11,052 reviews

Alaska Airlines

8.0

Very good

11,499 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Related info for your journey

How long is the flight from O'ahu to Illinois?
A quick flight from O'ahu to Illinois can take about 10h 53m. Delta provides one of the quickest options available for as low as $421. O'ahu and Illinois are separated by a distance of 4120 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from O'ahu to Illinois one-way?
The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $211. However, be on the lookout for offers from Alaska Airlines and Hawaiian Airlines, as they are both options that can get you from O'ahu to Illinois for a low price.
Can I find deals for flights from O'ahu to Illinois that include hotel bookings?
Yes. In addition to deals on O'ahu to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from O'ahu to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'ahu to Illinois.
Can I find deals for business class flights from O'ahu to Illinois?
Yes. Cheapflights offers flight deals from O'ahu 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 O'ahu to Illinois?
Currently, August is the cheapest month in which you can book a flight from O'ahu to Illinois (average of $253). Flying from O'ahu to Illinois in July is currently the most expensive (average of $719). 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

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from O'ahu to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$305	Average$620	FlexibilityNo cancel fee	On-timeN/A
Hawaiian Airlines	Cheapest$335	Average$770	FlexibilityNo cancel fee	On-time85%
American Airlines	Cheapest$467	Average$769	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$512	Average$784	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$581	Average$778	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$717	Average$1,047	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$211+ Cheap flights from O'ahu to Illinois

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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from O'ahu to Illinois with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from O'ahu to Illinois

Cheapest flights from O'ahu to IllinoisExplore the most affordable flight options available from O'ahu to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2025.

Explore the most affordable flight options available from O'ahu to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2025.

Find flight deals from O'ahu to Illinois

Keep the following information in mind while searching for O'ahu to Illinois flight deals. Data was last updated December 22, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from O'ahu to Illinois that are best for you.

Best time to book a flight from O'ahu to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from O'ahu with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from O'ahu to Illinois

What is the cheapest month to book a flight from O'ahu to Illinois?

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

Find hourly flight availability from O'ahu to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2025.

What is the cheapest day to fly from O'ahu to Illinois?

Use this chart to determine the cheapest time to fly round-trip from O'ahu to Illinois. Price data was last updated on December 16, 2024.

Weekly flight availability from O'ahu to Illinois

Explore weekly flight availability from O'ahu to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 22, 2025.

Reviews of airlines servicing Illinois

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from O'ahu to Illinois by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from O'ahu 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 O'ahu to Illinois?

What are the cheapest airlines to fly from O'ahu to Illinois one-way?

Can I find deals for flights from O'ahu to Illinois that include hotel bookings?

How can I find direct flights from O'ahu to Illinois?

Can I find deals for business class flights from O'ahu to Illinois?

What is the cheapest month to book a flight from O'ahu to Illinois?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for O'ahu to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from O'ahu to Illinois

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from O'ahu to Illinois
Explore the most affordable flight options available from O'ahu to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2025.