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$156+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
PSC — ORD
févr. 28 — mars 71
sam. 2/28
sam. 3/7
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 janvier 29, 2026.

This Delta deal was found by Cheapflights users on 1/27. 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.
mar. 3/1712:13 pm
PSC
-
ORD
1 stop7h 21m
Delta
mer. 3/257:25 am
ORD
-
PSC
1 stop6h 16m
Delta
Deal found 1/27$237
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
mar. 2/245:12 am
PSC
-
ORD
1 stop9h 21m
Alaska Airlines
mer. 2/253:54 pm
ORD
-
PSC
1 stop7h 01m
Alaska Airlines
Deal found 1/28$274
This Delta deal was found by Cheapflights users on 1/28. 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.
ven. 5/112:16 pm
PSC
-
ORD
1 stop7h 02m
Delta
dim. 5/37:12 pm
ORD
-
PSC
1 stop6h 27m
Delta
Deal found 1/28$311
This United Airlines deal was found by Cheapflights users on 1/27. 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.
sam. 9/122:00 pm
PSC
-
ORD
1 stop7h 34m
United Airlines
mar. 9/153:00 pm
ORD
-
PSC
1 stop7h 53m
United Airlines
Deal found 1/27$327
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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.
mar. 2/245:12 am
PSC
-
ORD
1 stop6h 59m
Alaska Airlines
mar. 2/243:54 pm
ORD
-
PSC
1 stop7h 01m
Alaska Airlines
Deal found 1/27$341
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
sam. 2/285:12 am
PSC
-
STL
1 stop6h 39m
Alaska Airlines
mer. 3/47:00 am
STL
-
PSC
1 stop7h 19m
Alaska Airlines
Deal found 1/28$362
This United Airlines deal was found by Cheapflights users on 1/27. 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.
sam. 2/285:00 am
PSC
-
STL
1 stop6h 14m
United Airlines
mer. 3/47:41 am
STL
-
PSC
2 stops15h 36m
United Airlines
Deal found 1/27$365
This Delta deal was found by Cheapflights users on 1/28. 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.
mar. 3/245:19 pm
PSC
-
STL
1 stop5h 02m
Delta
lun. 3/306:12 pm
STL
-
PSC
1 stop7h 17m
Delta
Deal found 1/28$368
This Delta deal was found by Cheapflights users on 1/27. 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.
mar. 7/215:00 pm
PSC
-
MDW
2 stops13h 42m
Delta
mar. 7/282:00 pm
MDW
-
PSC
1 stop7h 44m
Delta
Deal found 1/27$378
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 3/17:00 pm
PSC
-
STL
1 stop22h 52m
Multiple Airlines
dim. 3/86:19 pm
STL
-
PSC
1 stop28h 16m
Multiple Airlines
Deal found 1/27$395
This Delta deal was found by Cheapflights users on 1/27. 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.
sam. 9/126:00 am
PSC
-
MDW
2 stops10h 05m
Delta
mar. 9/152:00 pm
MDW
-
PSC
1 stop7h 44m
Delta
Deal found 1/27$411
This United Airlines deal was found by Cheapflights users on 1/27. 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.
sam. 9/1212:45 pm
PSC
-
STL
1 stop6h 14m
United Airlines
mar. 9/155:20 am
STL
-
PSC
2 stops8h 55m
United Airlines
Deal found 1/27$422

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 janvier 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Delta)

One-way from

$156
(Expedia)

Popular in

May

Cheapest in

February

Average price

$528
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. 8% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 janvier 29, 2026.
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

mar. 2/24

8:25 am-4:33 pm

1 stop6h 08m

Chicago O'Hare Intl

mer. 2/25

3:54 pm-8:55 pm

1 stop7h 01m

$237

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

mar. 3/17

12:13 pm-9:34 pm

1 stop7h 21m

Chicago O'Hare Intl

mer. 3/25

7:25 am-11:41 am

1 stop6h 16m

$237

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

ven. 5/1

12:16 pm-9:18 pm

1 stop7h 02m

Chicago O'Hare Intl

dim. 5/3

7:12 pm-11:39 pm

1 stop6h 27m

$311

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

sam. 2/28

5:12 am-1:51 pm

1 stop6h 39m

Lambert-St Louis

mer. 3/4

7:00 am-12:19 pm

1 stop7h 19m

$362

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

sam. 2/28

5:00 am-1:14 pm

1 stop6h 14m

Lambert-St Louis

mer. 3/4

7:41 am-9:17 pm

2 stops15h 36m

$365

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

mar. 3/24

5:19 pm-12:21 am

1 stop5h 02m

Lambert-St Louis

lun. 3/30

6:12 pm-11:29 pm

1 stop7h 17m

$368

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

mer. 3/25

5:19 pm-12:21 am

1 stop5h 02m

Lambert-St Louis

lun. 3/30

6:12 pm-11:29 pm

1 stop7h 17m

$368

PascoChicago

PSC - MDW

PSCMDW

Pasco Tri Cities

mar. 7/21

5:00 pm-8:42 am

2 stops13h 42m

Chicago Midway

mar. 7/28

1:00 pm-11:44 pm

2 stops12h 44m

$384

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

dim. 3/1

7:00 pm-7:52 pm

1 stop22h 52m

Lambert-St Louis

dim. 3/8

6:19 pm-8:35 pm

1 stop28h 16m

$395

PascoChicago

PSC - MDW

PSCMDW

Pasco Tri Cities

mer. 2/11

6:00 am-6:36 pm

2 stops10h 36m

Chicago Midway

dim. 2/15

1:29 pm-11:03 pm

2 stops11h 34m

$490

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 23 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 $693). 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 janvier 29, 2026.
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
11,808 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,808 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,127 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,215 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 6h 08m. Fly via Alaska Airlines, Delta, or United Airlines to get the fastest option. Airlines will cover a distance of 1565 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 $693). 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 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 janvier 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$173Average$402FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$258Average$450FlexibilityNo cancel feeOn-time75%

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