$207 Find Cheap Flights from Pasco to Illinois - Compare and Save

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 7/22. 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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Cheap Flights from Pasco to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$353
St. Louis
St. Louis1 stop$249
Chicago
Chicago1 stop$353
St. Louis
St. Louis1 stop$249

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

Mon, Jul 27 - Thu, Jul 30
Multiple Airlines Logo
8:48 pm - 6:05 pm
PSC
-
STL
19h 17m
1 stop
Multiple Airlines Logo
7:10 pm - 7:58 pm
STL
-
PSC
26h 48m
1 stop
$249Multiple Airlines
Mon, Jul 27 - Thu, Jul 30
Multiple Airlines Logo
8:48 pm - 7:23 pm
PSC
-
STL
20h 35m
2 stops
Multiple Airlines Logo
7:10 pm - 7:58 pm
STL
-
PSC
26h 48m
1 stop
$326Multiple Airlines
Wed, Jul 1 - Sat, Jul 4
Delta Logo
12:30 pm - 11:39 pm
PSC
-
ORD
9h 09m
1 stop
Delta Logo
1:00 pm - 6:43 pm
ORD
-
PSC
7h 43m
1 stop
$353Delta
Wed, Jul 1 - Sat, Jul 4
Delta Logo
3:25 pm - 11:39 pm
PSC
-
ORD
6h 14m
1 stop
Delta Logo
8:36 am - 4:41 pm
ORD
-
PSC
10h 05m
2 stops
$358Delta
Fri, Jul 3 - Wed, Jul 8
Delta Logo
12:30 pm - 11:39 pm
PSC
-
ORD
9h 09m
1 stop
Delta Logo
5:55 pm - 11:53 pm
ORD
-
PSC
7h 58m
1 stop
$383Delta
Sat, Jul 4 - Thu, Jul 9
Delta Logo
3:25 pm - 11:39 pm
PSC
-
ORD
6h 14m
1 stop
Delta Logo
5:54 pm - 11:54 pm
ORD
-
PSC
8h 00m
2 stops
$388Delta
Sat, Jul 4 - Sat, Jul 4
Alaska Airlines Logo
6:15 am - 4:44 pm
PSC
-
ORD
8h 29m
1 stop
Alaska Airlines Logo
7:17 pm - 11:39 pm
ORD
-
PSC
6h 22m
1 stop
$395Alaska Airlines
Tue, Sep 15 - Sat, Sep 19
American Airlines Logo
5:05 am - 1:46 pm
PSC
-
STL
6h 41m
1 stop
American Airlines Logo
5:43 am - 2:51 pm
STL
-
PSC
11h 08m
2 stops
$430American Airlines
Tue, Oct 20 - Sat, Oct 24
Alaska Airlines Logo
1:55 pm - 11:59 pm
PSC
-
STL
8h 04m
1 stop
Alaska Airlines Logo
6:00 am - 1:18 pm
STL
-
PSC
9h 18m
1 stop
$434Alaska Airlines
Tue, Sep 15 - Sat, Sep 19
American Airlines Logo
5:05 am - 7:07 pm
PSC
-
STL
12h 02m
2 stops
American Airlines Logo
11:01 am - 7:46 pm
STL
-
PSC
10h 45m
2 stops
$435American Airlines
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.

How much is a round-trip flight from Pasco to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Pasco to Illinois departing in July.

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 September, when tickets cost $187 (return) on average. On the other hand, the most expensive months are May and November, when the average cost of round-trip tickets is $476 and $470 respectively.

Good to know

Low seasonMarch
Cheapest flight$207
Best time to beat the crowds but there is an average 32% increase in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Pasco to Chicago O'Hare Airport

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.

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.
7.9
Alaska AirlinesOverall score based on 12525 reviews
8.5Crew
7.0Entertainment
8.1Boarding
7.1Food
7.8Comfort
Airline reviews

Airport security lines in Seattle were awful. The only staff that was pleasant and made the trip more enjoyable was the young woman at the gate in Seattle. She was so pleasant and helpful. Flight attendant on the plane seemed like she would rather be anywhere but on that plane.

8.0 ExcellentAnonymous, Jun 2026
SEA - ICT
Read more Alaska Airlines reviews

Airport security lines in Seattle were awful. The only staff that was pleasant and made the trip more enjoyable was the young woman at the gate in Seattle. She was so pleasant and helpful. Flight attendant on the plane seemed like she would rather be anywhere but on that plane.

My flight was several times rescheduled and then finally canceled.

People were friendly. Flight was a little delayed. Maybe I missed the reason for it. Overall a nice experience.

Crews were friendly enough. To help the airline I checked my carry on baggage. Typical "gonna be a full flight we need 19 carry on bags to be checked to help out". So I helped out only to have to wait 30+ mins for my luggage and risked not getting to my car rental on time. The return flight was delayed. Kept hearing employees say something about "they didn't have any power" which is kind of concerning. The air flow and air conditioning was insufficient. It was warm and stuffy during the flight. Plus no free wi-fi......Booooooo!

Flight maintenance was on so that flight didn’t go able to fly out to Seattle and Inhad to get another flight,,

Didn’t even get on, check my flight to Seattle for details. Do better Alaska.

A five hour nonstop flight traveling over a few time zones and over the dinner hour and you get a small bag of pretzels. And no screens to watch movies. I

The flight kept getting delayed due to a maintenance issue. That happens, but there is no excuse for changing the gate FIVE TIMES, including one time nearly all the way across SeaTac. After we were delayed for 3+ hours, they did send us (via email) a $12 meal voucher...except you can't find a $12 meal anywhere in that airport, unless you consider a bag of M&M's and a bottle of water a meal. The plane had one problem after another but finally took off 4.5 hours late. This caused us to miss our hotel shuttle at ORD (they didn't run past midnight and it was 3 am) so we had to wait 25 minutes and pay for an Uber. I did get a $50 flight voucher from Alaska...big deal. Barely covers my Uber ride that I shouldn't have needed.

I upgraded to a better seat and it was much more comfortable. Nobody serves food anymore and actually on a 2+ hr flight not necessary. I didn’t even get water.

It was good. Too long for older people. Service and support was great! Friendly crew!

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

The cabin temperature was nice and cool. The wifi was not working.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

First flight out and was 85 minutes delayed. Notification came out way too late

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

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

Information on your arrival and departure airports