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$158+ Cheap flights from Pasco (PSC) 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
PSC — ORD
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Pasco to Illinois

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

This Delta deal was found by Cheapflights users on 12/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:00 amPSC - ORD
1 stop6h 20mDelta
Fri 1/24:01 pmORD - PSC
1 stop6h 53mDelta
Deal found 12/14$453
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/295:00 amPSC - STL
1 stop6h 20mUnited Airlines
Fri 1/22:45 pmSTL - PSC
1 stop8h 18mUnited Airlines
Deal found 12/14$569
This Delta deal was found by Cheapflights users on 12/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:00 amPSC - STL
2 stops11h 20mDelta
Fri 1/23:43 pmSTL - PSC
1 stop7h 11mDelta
Deal found 12/14$574
This Alaska Airlines deal was found by Cheapflights users on 12/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:02 pmPSC - ORD
1 stop27h 57mAlaska Airlines
Sun 1/47:00 amORD - PSC
2 stops19h 17mAlaska Airlines
Deal found 12/13$672
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:45 pmPSC - ORD
1 stop8h 15mUnited Airlines
Sun 1/41:55 pmORD - PSC
1 stop9h 08mUnited Airlines
Deal found 12/13$721
This Delta deal was found by Cheapflights users on 12/12. 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 12/227:00 amPSC - ORD
1 stop8h 47mDelta
Fri 12/266:00 amORD - PSC
1 stop6h 38mDelta
Deal found 12/12$723
This United Airlines deal was found by Cheapflights users on 12/14. 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 12/2112:45 pmPSC - ORD
1 stop6h 34mUnited Airlines
Fri 12/267:10 amORD - PSC
1 stop8h 04mUnited Airlines
Deal found 12/14$754
This deal was found by Cheapflights users on 12/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:00 amPSC - ORD
1 stop6h 19mUnited Airlines
Sun 1/42:31 pmORD - PSC
1 stop8h 32mUnited Airlines
Deal found 12/12$757
This Delta deal was found by Cheapflights users on 12/12. 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.
Sun 12/2112:27 pmPSC - ORD
1 stop7h 09mDelta
Fri 12/266:00 amORD - PSC
1 stop6h 38mDelta
Deal found 12/12$759
This United Airlines deal was found by Cheapflights users on 12/12. 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 12/275:00 amPSC - ORD
1 stop16h 59mUnited Airlines
Wed 12/311:55 pmORD - PSC
1 stop9h 08mUnited Airlines
Deal found 12/12$771
This American Airlines deal was found by Cheapflights users on 12/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:00 amPSC - STL
1 stop6h 51mAmerican Airlines
Fri 12/198:00 amSTL - PSC
1 stop7h 49mAmerican Airlines
Deal found 12/13$947
This Alaska Airlines deal was found by Cheapflights users on 12/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:23 amPSC - STL
2 stops12h 24mAlaska Airlines
Fri 12/196:20 amSTL - PSC
1 stop18h 04mAlaska Airlines
Deal found 12/13$1,112

Find flight deals from Pasco to Illinois

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

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$285
(Delta)

One-way from

$158
(Alaska Airlines)

Popular in

January

Cheapest in

February

Average price

$580
Provider with most accurate pricing for Pasco Tri Cities-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Pasco Tri Cities-Chicago (CHI) flights.
Search Deals
From Pasco Tri Cities to Illinois
Search Deals
One-way flight from Pasco Tri Cities to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

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

Fly from

Pasco

Fly to

Illinois

Route

Depart

Return

Price

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Sun 1/18

1:00 pm-11:53 pm

1 stop8h 53m

Chicago O'Hare Intl

Mon 1/26

2:20 pm-11:09 pm

1 stop10h 49m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Sun 1/18

1:00 pm-1:22 pm

1 stop22h 22m

Chicago O'Hare Intl

Fri 1/23

2:20 pm-10:48 am

1 stop22h 28m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Tue 3/17

5:23 am-1:25 pm

1 stop6h 02m

Chicago O'Hare Intl

Wed 3/25

7:20 am-11:51 am

1 stop6h 31m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Mon 1/19

1:00 pm-11:53 pm

1 stop8h 53m

Chicago O'Hare Intl

Sun 1/25

7:30 am-11:09 pm

1 stop17h 39m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Tue 1/20

1:00 pm-11:53 pm

1 stop8h 53m

Chicago O'Hare Intl

Sat 1/24

7:30 am-11:09 pm

1 stop17h 39m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Thu 3/5

1:00 pm-11:52 pm

1 stop8h 52m

Chicago O'Hare Intl

Sun 3/8

7:20 am-11:50 am

1 stop6h 30m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Wed 1/21

1:00 pm-11:53 pm

1 stop8h 53m

Chicago O'Hare Intl

Sat 1/24

7:30 am-11:09 pm

1 stop17h 39m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Tue 1/20

5:05 am-1:22 pm

1 stop6h 17m

Chicago O'Hare Intl

Tue 1/27

7:30 am-4:23 pm

1 stop10h 53m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Mon 1/19

1:00 pm-11:53 pm

1 stop8h 53m

Chicago O'Hare Intl

Sat 1/24

7:30 am-11:09 pm

1 stop17h 39m

$285

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

Sat 1/24

1:00 pm-11:53 pm

1 stop8h 53m

Chicago O'Hare Intl

Tue 1/27

7:30 am-4:23 pm

1 stop10h 53m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 44 results
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Best time to book a flight from Pasco to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Pasco 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 Pasco to Illinois

What is the cheapest month to book a flight from Pasco to Illinois?

Currently, March is the cheapest month in which you can book a flight from Pasco to Illinois (average of $167). Flying from Pasco to Illinois in December is currently the most expensive (average of $584). 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.

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 December 15, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Pasco to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,452 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,452 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
9,092 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

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

  • What airport do you fly from for flights from Pasco to Illinois?

    For a flight from Pasco to Illinois, you will be flying from Tri Cities. Pasco Tri Cities (PSC) is just 1.9 mi from the center of the city.

  • How long is the flight from Pasco to Illinois?

    There are many flights that can get you from Pasco to Illinois in 7h 12m. Fly via Delta, American Airlines, or United Airlines to get the fastest option. Airlines will cover a distance of 1542 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Pasco to Illinois?

    When deciding which route to take from Pasco to Illinois consider Pasco Tri Cities - Chicago O'Hare Intl, Pasco Tri Cities - Chicago Midway or Pasco Tri Cities - Lambert-St Louis as they are the most popular.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Pasco to Illinois (average of $167). Flying from Pasco to Illinois in December is currently the most expensive (average of $584). 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 Pasco to Illinois

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Top 2 airlines flying from Pasco to Illinois

Discover the top 2 airlines that operate flights from Pasco 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 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$173Average$412FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$258Average$450FlexibilityNo cancel feeOn-time75%

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