$139 Find Cheap Flights from Pasco to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Pasco to Illinois departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Pasco to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Pasco to Illinois, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Pasco to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$323
St. Louis
St. Louis1 stop$330
Chicago
Chicago1 stop$323
St. Louis
St. Louis1 stop$330

Book Cheap Pasco to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Pasco to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Pasco to Illinois

Tue, Mar 10 - Wed, Mar 11
Delta Logo
12:35 pm - 11:44 pmPSC-ORD
9h 09m1 stop
Delta Logo
7:30 am - 11:55 amORD-PSC
6h 25m1 stop
$323Delta
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Tue, Mar 3 - Wed, Mar 4
Hawaiian Airlines Logo
6:01 am - 1:52 pmPSC-STL
5h 51m1 stop
Hawaiian Airlines Logo
2:55 pm - 8:56 pmSTL-PSC
8h 01m1 stop
$330Hawaiian Airlines
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Wed, Jan 14 - Sat, Jan 17
Alaska Airlines Logo
5:59 am - 11:55 pmPSC-ORD
15h 56m1 stop
Alaska Airlines Logo
3:35 pm - 8:57 pmORD-PSC
7h 22m1 stop
$332Alaska Airlines
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Thu, Dec 11 - Fri, Dec 12
Multiple Airlines Logo
3:14 pm - 11:42 amPSC-ORD
18h 28m1 stop
Multiple Airlines Logo
10:05 pm - 3:49 pmORD-PSC
19h 44m2 stops
$333Multiple Airlines
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Wed, Jan 14 - Sat, Jan 17
Alaska Airlines Logo
5:59 am - 5:10 pmPSC-ORD
9h 11m1 stop
Alaska Airlines Logo
9:00 am - 8:57 pmORD-PSC
13h 57m2 stops
$338Alaska Airlines
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Thu, Dec 11 - Fri, Dec 12
Multiple Airlines Logo
3:14 pm - 12:39 pmPSC-ORD
19h 25m2 stops
Multiple Airlines Logo
9:14 pm - 3:49 pmORD-PSC
20h 35m2 stops
$419Multiple Airlines
Find Deal
Mon, Nov 10 - Fri, Nov 14
American Airlines Logo
2:47 pm - 12:12 amPSC-ORD
7h 25m1 stop
American Airlines Logo
1:28 pm - 9:06 pmORD-PSC
9h 38m1 stop
$457American Airlines
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Fri, Nov 14 - Mon, Nov 17
United Airlines Logo
12:45 pm - 9:54 pmPSC-STL
7h 09m1 stop
United Airlines Logo
11:05 am - 11:07 pmSTL-PSC
14h 02m2 stops
$594United Airlines
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Thu, Feb 12 - Tue, Feb 17
United Airlines Logo
5:00 am - 5:10 pmPSC-ORD
10h 10m2 stops
United Airlines Logo
12:50 pm - 8:50 pmORD-PSC
10h 00m2 stops
$908United Airlines
Find Deal
Sun, Dec 21 - Sat, Dec 27
American Airlines Logo
5:00 am - 4:12 pmPSC-ORD
9h 12m2 stops
American Airlines Logo
12:00 pm - 7:42 pmORD-PSC
9h 42m2 stops
$1,148American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Pasco to Illinois flights

Get data-powered insights and trends into flights from Pasco to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Pasco to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Pasco to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Pasco to Illinois is February, when tickets cost $346 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $772 and $751 respectively.

What’s the cheapest day of the week to fly from Pasco to Illinois?

The average price of all round-trip flights from Pasco to Illinois clicked on KAYAK for each day over the last 12 months.

For Pasco to Illinois, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Illinois back to Pasco, the best deals are generally found on Saturday, with Tuesday being the most expensive.

Good to know

Low seasonJune
Cheapest flight$139
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Pasco to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Pasco to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pasco to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pasco to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Pasco to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Pasco to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Pasco to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pasco to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Pasco to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $465 on average. Morning departures are around 8% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $541.

Reviews of the top airlines flying from Pasco to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Pasco to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Pasco to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11214 reviews
7.8Comfort
7.0Entertainment
8.5Crew
8.1Boarding
7.1Food
Airline reviews

Its bumpy but I can say its safe flight ,Thanks Alaska airline for bringing me in my destination😊.

8.0 ExcellentMary Grace, Oct 2025SEA - BNA
Read more Alaska Airlines reviews

Its bumpy but I can say its safe flight ,Thanks Alaska airline for bringing me in my destination😊.

Almost 3 hr delay in Settle with very little information available to passengers. They boarded the plane and we waited for a long time inside the plane as well.

Check in online didn't accept my confirmation number so i could only check in with assistance at the airport and ended up with s creepy middle seat.

It was the most expensive Alaska Airlines ticket I’ve ever purchased. I had a middle seat with no legroom or space compared to any other middle seat I’ve hadThere was a silver box under the seat that took up 70% of my legroom on the most narrow 737 max the crew flat out would not help they would not help with bags they would not help with garbage there was no coffee,It was definitely not one of my better experiences on Alaska.

This was our first time flying with Alaska. It was a seamless experience, with comfortable seats and leg room. Staff were friendly and helpful.

Flight on time. Crew good. Seating Bad. Have to pay extra on a not cheap flight to avoid being next to toilet.

The crew was great! Passengers were nice. Just an fyi that I heard several of them complain that the snack was not gluten free. Many people got handed the snack and then promptly gave it back to the flight attendant. Might be good to look into another option as such a high percentage of people in CO and WA are gf. Cheers!

The flight was fine, but the Kayak app is terrible. I could not input my flight. I couldn’t use it for anything and it would not even let me try to add a seat once you purchased the ticket you might as well. Delete the Kayak app as far as I’m concerned. I’m done with kayak. Com

Food and entertainment not applicable - standard drinks and cinnamon cookies; crew did not do a song and dance for us so no entertainment. I like the slightly better leg room than American Airlines - at least it felt that way. Flight crew and atmosphere seemed more welcoming than American, too.

this was the THIRD time in four Alaska flights that were 2 hours late. Only one was due to weather. The intentionally posted each flight as only 1 hour and 55 minutes late so that they wouldn't have to give out vouchers. And then the flights all ended up more than 2 hours late. Makes United look like a premium carrier.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

Everything you need to know for your flight from Pasco to Illinois

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