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$123+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
PSC — ORD
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Pasco to Illinois

Keep the following information in mind while searching for Pasco to Illinois flight deals. Data was last updated junio 12, 2025.

Round-trip from

$236
(Alaska Airlines)

One-way from

$123
(Alaska Airlines)

Popular in

January

Cheapest in

February

Average price

$385
From Pasco Tri Cities to Illinois
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One-way flight from Pasco Tri Cities to Illinois
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Highest demand for flights based on searches. 18% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 junio 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
mié. 9/171:05 pmPSC - ORD
1 stop8h 54mAlaska Airlines
mié. 9/246:20 amORD - PSC
1 stop11h 06mAlaska Airlines
Deal found 6/10$236
This Delta deal was found by Cheapflights users on 6/10. 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.
vie. 7/41:00 pmPSC - ORD
1 stop6h 35mDelta
vie. 7/116:15 pmORD - PSC
1 stop6h 50mDelta
Deal found 6/10$259
This Delta deal was found by Cheapflights users on 6/10. 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. 8/125:18 pmPSC - STL
1 stop5h 20mDelta
mié. 8/207:11 pmSTL - PSC
1 stop6h 15mDelta
Deal found 6/10$261
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/281:05 pmPSC - STL
1 stop8h 54mHawaiian Airlines
mar. 9/23:35 pmSTL - PSC
1 stop7h 40mHawaiian Airlines
Deal found 6/10$317
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/81:30 pmPSC - ORD
1 stop8h 29mHawaiian Airlines
vie. 7/116:00 amORD - PSC
1 stop8h 36mHawaiian Airlines
Deal found 6/10$343
This Delta deal was found by Cheapflights users on 6/10. 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.
mié. 9/176:00 amPSC - MDW
2 stops13h 44mDelta
mié. 9/242:00 pmMDW - PSC
1 stop7h 52mDelta
Deal found 6/10$344
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
jue. 8/287:00 amPSC - STL
2 stops14h 59mAlaska Airlines
mar. 9/26:00 amSTL - PSC
1 stop8h 28mAlaska Airlines
Deal found 6/10$387
This American Airlines deal was found by Cheapflights users on 6/10. 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.
sáb. 7/262:55 pmPSC - ORD
1 stop7h 53mAmerican Airlines
sáb. 8/27:22 amORD - PSC
1 stop8h 10mAmerican Airlines
Deal found 6/10$396
This United Airlines deal was found by Cheapflights users on 6/10. 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.
lun. 6/306:38 amPSC - STL
1 stop8h 07mUnited Airlines
mar. 7/86:00 amSTL - PSC
1 stop7h 30mUnited Airlines
Deal found 6/10$423
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/302:55 pmPSC - STL
1 stop7h 04mAmerican Airlines
mar. 7/87:44 amSTL - PSC
1 stop7h 48mAmerican Airlines
Deal found 6/12$449
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mar. 6/241:36 pmPSC - ORD
1 stop9h 23mUnited Airlines
sáb. 6/284:20 pmORD - PSC
1 stop6h 41mUnited Airlines
Deal found 6/10$521
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/2512:11 pmPSC - STL
2 stops26h 53mMultiple Airlines
dom. 6/296:12 amSTL - PSC
2 stops28h 34mMultiple Airlines
Deal found 6/10$569

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 junio 12, 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

mié. 9/17

1:05 pm-11:59 pm

1 stop8h 54m

Chicago O'Hare Intl

mié. 9/24

6:20 am-3:26 pm

1 stop11h 06m

$236

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

vie. 7/4

1:00 pm-9:35 pm

1 stop6h 35m

Chicago O'Hare Intl

vie. 7/11

6:15 pm-11:05 pm

1 stop6h 50m

$259

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

mar. 8/12

5:18 pm-12:38 am

1 stop5h 20m

Lambert-St Louis

mié. 8/20

7:11 pm-11:26 pm

1 stop6h 15m

$261

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

jue. 8/28

1:05 pm-11:59 pm

1 stop8h 54m

Lambert-St Louis

mar. 9/2

3:35 pm-9:15 pm

1 stop7h 40m

$317

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

mar. 7/8

1:30 pm-11:59 pm

1 stop8h 29m

Chicago O'Hare Intl

vie. 7/11

6:00 am-12:36 pm

1 stop8h 36m

$343

PascoChicago

PSC - MDW

PSCMDW

Pasco Tri Cities

mié. 9/17

6:00 am-9:44 pm

2 stops13h 44m

Chicago Midway

mié. 9/24

2:00 pm-7:52 pm

1 stop7h 52m

$344

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

jue. 8/28

7:00 am-11:59 pm

2 stops14h 59m

Lambert-St Louis

mar. 9/2

6:00 am-12:28 pm

1 stop8h 28m

$387

PascoChicago

PSC - ORD

PSCORD

Pasco Tri Cities

sáb. 7/26

2:55 pm-12:48 am

1 stop7h 53m

Chicago O'Hare Intl

sáb. 8/2

7:22 am-1:32 pm

1 stop8h 10m

$396

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

lun. 6/30

6:38 am-4:45 pm

1 stop8h 07m

Lambert-St Louis

mar. 7/8

6:00 am-11:30 am

1 stop7h 30m

$423

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

lun. 6/30

2:55 pm-11:59 pm

1 stop7h 04m

Lambert-St Louis

mar. 7/8

7:44 am-1:32 pm

1 stop7h 48m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, August is the cheapest month in which you can book a flight from Pasco to Illinois (average of $245). Flying from Pasco to Illinois in March is currently the most expensive (average of $321). 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 PSC to IL?

Find hourly flight availability from Pasco 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 junio 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pasco to Illinois as you normally would.

Rainfall in Illinois by month

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

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.

Temperature in Illinois by month

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

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).

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 junio 12, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Pasco to Illinois have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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.

  • What are the cheapest airlines to fly from Pasco to Illinois one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $123. Delta flights start at $130 while deals on American Airlines start at $170 one-way.

  • 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, August is the cheapest month in which you can book a flight from Pasco to Illinois (average of $245). Flying from Pasco to Illinois in March is currently the most expensive (average of $321). 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$177Average$412FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$359Average$524FlexibilityNo cancel feeOn-time75%

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