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$145+ Cheap flights from Illinois to Pasco (PSC)

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PSC
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Illinois to Pasco

Keep the following information in mind while searching for Illinois to Pasco flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$323
(Delta)

One-way from

$145
(Kiwi.com)

Popular in

January

Cheapest in

August

Average price

$479
Provider with most accurate pricing for Chicago (CHI)-Pasco Tri Cities flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Pasco Tri Cities flights.
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From Illinois to Pasco Tri Cities
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One-way flight from Illinois to Pasco Tri Cities
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Highest demand for flights based on searches. 24% potential increase in price ($166 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Illinois to Pasco

Cheapest flights from Illinois to Pasco
Explore the most affordable flight options available from Illinois to Pasco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This KAYAK deal was found by Cheapflights users on 10/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/83:23 pmSTL - PSC
1 stop7h 30mAlaska Airlines
Fri 12/122:39 pmPSC - STL
1 stop7h 20mAlaska Airlines
Deal found 10/27$330
This Delta deal was found by Cheapflights users on 10/27. 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.
Mon 12/82:20 pmSTL - PSC
2 stops10h 39mDelta
Fri 12/126:15 amPSC - STL
2 stops10h 55mDelta
Deal found 10/27$334
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Sun 11/236:00 amORD - PSC
1 stop29h 13mAlaska Airlines
Tue 12/22:39 pmPSC - ORD
1 stop7h 20mAlaska Airlines
Deal found 10/26$392
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sun 12/2110:49 pmORD - PSC
1 stop17h 33mMultiple Airlines
Sun 12/289:28 pmPSC - ORD
2 stops19h 05mMultiple Airlines
Deal found 10/27$418
This Delta deal was found by Cheapflights users on 10/29. 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.
Wed 11/121:47 pmMDW - PSC
1 stop8h 02mDelta
Wed 11/195:10 amPSC - MDW
2 stops11h 08mDelta
Deal found 10/29$427
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 12/186:15 amSTL - PSC
1 stop7h 58mDelta
Sun 1/1111:35 amPSC - STL
1 stop8h 00mDelta
Deal found 10/27$444
This Delta deal was found by Cheapflights users on 10/27. 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.
Tue 11/117:40 pmORD - PSC
1 stop5h 59mDelta
Sat 11/156:00 amPSC - ORD
1 stop7h 04mDelta
Deal found 10/27$445
This Delta deal was found by Cheapflights users on 10/27. 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.
Tue 11/111:47 pmMDW - PSC
1 stop8h 02mDelta
Sat 11/155:10 amPSC - MDW
2 stops10h 58mDelta
Deal found 10/27$450
This Orbitz deal was found by Cheapflights users on 10/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:53 pmORD - PSC
1 stop8h 20mAlaska Airlines
Fri 11/143:49 pmPSC - ORD
1 stop6h 35mAlaska Airlines
Deal found 10/28$457
This Delta deal was found by Cheapflights users on 10/27. 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.
Tue 11/256:13 pmORD - PSC
1 stop6h 48mDelta
Sat 11/295:10 amPSC - ORD
1 stop5h 28mDelta
Deal found 10/27$461
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 11/128:00 amORD - PSC
1 stop6h 59mAlaska Airlines
Thu 11/131:36 pmPSC - ORD
1 stop8h 48mAlaska Airlines
Deal found 10/28$470
This Delta deal was found by Cheapflights users on 10/28. 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.
Wed 11/125:23 amORD - PSC
2 stops13h 38mDelta
Sun 11/165:10 amPSC - ORD
1 stop5h 28mDelta
Deal found 10/28$476

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Pasco 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 October 29, 2025.
Use the filters below to find and compare flights from Illinois to Pasco that are best for you.

Fly from

Illinois

Fly to

Pasco

Route

Depart

Return

Price

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Mon 12/8

3:23 pm-8:53 pm

1 stop7h 30m

Pasco Tri Cities

Fri 12/12

2:39 pm-11:59 pm

1 stop7h 20m

$330

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Mon 12/8

2:20 pm-10:59 pm

2 stops10h 39m

Pasco Tri Cities

Fri 12/12

6:15 am-7:10 pm

2 stops10h 55m

$334

ChicagoPasco

MDW - PSC

MDWPSC

Chicago Midway

Tue 3/10

1:00 pm-11:39 pm

2 stops12h 39m

Pasco Tri Cities

Wed 3/11

6:30 am-6:34 pm

2 stops10h 04m

$341

ChicagoPasco

ORD - PSC

ORDPSC

Chicago O'Hare Intl

Sun 11/23

6:00 am-9:13 am

1 stop29h 13m

Pasco Tri Cities

Tue 12/2

2:39 pm-11:59 pm

1 stop7h 20m

$392

ChicagoPasco

MDW - PSC

MDWPSC

Chicago Midway

Wed 11/12

1:47 pm-7:49 pm

1 stop8h 02m

Pasco Tri Cities

Wed 11/19

5:10 am-6:18 pm

2 stops11h 08m

$427

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 12/18

6:15 am-12:13 pm

1 stop7h 58m

Pasco Tri Cities

Sun 1/11

11:35 am-9:35 pm

1 stop8h 00m

$444

ChicagoPasco

ORD - PSC

ORDPSC

Chicago O'Hare Intl

Tue 11/11

8:00 am-3:12 pm

1 stop9h 12m

Pasco Tri Cities

Sat 11/15

1:36 pm-12:24 am

1 stop8h 48m

$445

ChicagoPasco

ORD - PSC

ORDPSC

Chicago O'Hare Intl

Tue 11/11

7:40 pm-11:39 pm

1 stop5h 59m

Pasco Tri Cities

Sat 11/15

6:00 am-3:04 pm

1 stop7h 04m

$445

ChicagoPasco

MDW - PSC

MDWPSC

Chicago Midway

Tue 11/11

1:47 pm-7:49 pm

1 stop8h 02m

Pasco Tri Cities

Sat 11/15

5:10 am-6:08 pm

2 stops10h 58m

$450

ChicagoPasco

ORD - PSC

ORDPSC

Chicago O'Hare Intl

Thu 11/13

5:53 pm-12:13 am

1 stop8h 20m

Pasco Tri Cities

Fri 11/14

3:49 pm-12:24 am

1 stop6h 35m

$457

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 38 results
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Best time to book a flight from Illinois to Pasco

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

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Pasco (average of $278). Flying from Illinois to Pasco in February is currently the most expensive (average of $848). 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 IL to PSC?

Find hourly flight availability from Illinois to Pasco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s typically best to fly out from Illinois to Pasco in the evening. Doing so could potentially save you 36% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Pasco. 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 into for flights to Pasco from Illinois?

    Pasco Tri Cities (PSC) is the airport you will fly into if you book a flight from Illinois to Pasco. It is only a 1.9 mi journey from Tri Cities (PSC) to Pasco’s city center.

  • How long is the flight from Illinois to Pasco?

    A quick flight from Illinois to Pasco can take about 7h 30m. Alaska Airlines provides one of the quickest options available for as low as $330. Airlines will cover a distance of 1542 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The most popular flight routes from Illinois to Pasco are Lambert-St Louis - Pasco Tri Cities, Chicago O'Hare Intl - Pasco Tri Cities and Greater Peoria - Pasco Tri Cities.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Illinois to Pasco (average of $278). Flying from Illinois to Pasco in February is currently the most expensive (average of $848). 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

Traveling to a place near Pasco?

Book flights to Pasco if you plan to visit one of these locations
Kennewick
Richland

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Top 2 airlines flying from Illinois to Pasco

Discover the top 2 airlines that operate flights from Illinois to Pasco. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$278Average$436FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$337Average$455FlexibilityNo cancel feeOn-time75%

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