$50 Find Cheap Flights from Illinois to Washington

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Low seasonFebruary
High seasonJuly
Cheapest flight$50
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Chicago O'Hare Airport to Seattle

Flights from Illinois to Washington: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Illinois to Washington 
PaulFlew with Alaska AirlinesORD-SEAApr 2024
The flight is long, at over four hours. I would try to get a window or aisle seat to be more comfortable. I would check with other airlines that allow you to choose your seat even if you are in the economy section. I would bring your own food on the plane as the service was sometimes sketchy.
Verified travelerFlew with Alaska AirlinesORD-SEAApr 2024
If you miss your flight ask any alaska agent to how and where to rebook the flight.

FAQs for booking flights from Illinois to Washington

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

    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 Illinois to Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Washington 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 Illinois to Washington?

    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 Illinois to Washington 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 Illinois to Washington?

    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 Illinois to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Washington?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington is Spokane Airport (GEG), with an average flight price of $164.

  • What is the cheapest day to fly to Washington?

    Based on KAYAK data, the cheapest day to fly to Washington is Wednesday where round-trip tickets can be as cheap as $330. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $444 on average.

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

    The cheapest time of day to fly to Washington is generally at night, when round-trip flights cost $327 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $379.

  • What is the cheapest flight to Washington?

    The cheapest ticket to Washington from Illinois found in the last 72 hours was to Seattle, at $135 round-trip. The most popular route is Chicago Midway Airport (MDW) to Seattle (SEA) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $135.

  • What is the cheapest month to fly from Illinois to Washington?

    The cheapest month for flights from Illinois to Washington is August, when tickets cost $294 (return) on average. On the other hand, the most expensive months are January and July, when the average cost of round-trip tickets is $622 and $616 respectively.

  • How far in advance should I book a flight from Illinois to Washington?

    To get a below average price on the flight from Illinois to Washington, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to Washington?

    An average nonstop flight from Illinois to Washington takes 9h 36m, covering a distance of 1627 miles. The shortest route is Chicago Midway Airport (MDW) to Spokane (GEG) with an average flight time of 3h 55m.

  • What are the most popular destinations in Washington?

    Based on KAYAK flight searches, the most popular destination is Seattle (78% of total searches to Washington). The next most popular destinations are Portland (18%) and Spokane (3%). Searches for flights to Pasco (0%), to Bellingham (0%) and to Walla Walla (0%) are also popular.

Reviews of the top 5 airlines serving from Illinois to Washington

 
Need help choosing which airline to fly with from Illinois to Washington? 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 10000 reviews
8.1Boarding
7.8Comfort
7.1Food
8.5Crew
7.1Entertainment
Airline reviews

Paying for first class and then they want $8:00 for wifi.

4.0 OkayGreg, Jul 2025SFO - SEA
Read more Alaska Airlines reviews

Paying for first class and then they want $8:00 for wifi.

10 hour delay. Fuel spill. Crew had to drive to Indianapolis to a get a plane. The longest day of travel ever. Poor service.Little to no communication.

I'm so glad that Alaska still keeps this little "puddle-jumper" route going between SEA>ALW; my daughter lives on Walla Walla, and it's so much quicker to be able to fly right in to Walla Walla than to have to fly into Tri-Cities and then make her drive 40 minutes each way. This flight is usually only 50%-75% full when I fly it, but that's because it doesn't get in to ALW until MIDNIGHT! But thanks for continuing to service the Walla Walla area, Alaska!

Easy flight, crew was polite & observant of all passenger needs as well as safety.

fine. only problem,,,, for some,,,,was that many people started trying to exit from the back of the plane,, . lots of irate people. there should be a flight attendant mid plane..to be sure that doesn't happen. The crew up front had no idea what was happening. One big guy started it..then a bunch of others followed his lead. could have gotten ugly... One man stepped in and questioned those rule breakers.. nothing bad happened,,,but......

We were delayed. We spent more time waiting on the plane than actually flying (it’s only a 37 minute flight). Other than that, it was fine.

Only offered water, no snacks provided, and it was cold on the plane, everyone was wearing sweatshirt or jacket in June. I asked for blanket, but crew said they didnt have anything and would turn the heat up, that didn't happen, so for 6 hours I remained cold.

Flight from New Orleans to Seattle to Anchorage was delayed for 3 hours My flight from Seattle to Anchorage was not rescheduled. I had to call the airlines to tell them to get a flight from Seattle to Anchorage they finally got me a flight If I hadn’t been aware of this problem I don’t know how long I would of waited in Seattle to get a flight to Anchorage!!!!!! Return trip from Anchorage to New Orleans in Seattle to New Orleans I was at the right gate when I realized something was wrong they had changed the gate without notifying the change l finally made it on time with minutes to spare & exhausted

I was at risk of not getting on the flight, as when I presented my boarding pass at the gate, it showed me as not having checked in. I was sent to the desk as the last of the other passengers boarded. The agent there said he could see that I had done all of my part and allowed times recommended, but it showed me as not checked in and he couldn't figure out how to correct it. He actually asked them to hold the flight as he struggled with it. He called for support, someone corrected it, and he printed boarding passes for both flights to reduce further issues. I did get on, and needed to ask someone to exit my seat.

Same crew flew with us from Palm Springs to Bellingham, so they were great! Friendly and kind from start to finish. Great experience!

Very late arrival at PWM. Late jet getting to ATL. Equipment problem with aircraft - could not get enough water onto plane., Another delay getting FAA approval for flight with bottled H2O. Not the crew’s problem.

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

At first, we were on the runway for about an hour, literally. The Captain did explain that the Control Tower just had a change shift (sounds like an unrealistic excuse) and then that we had to change a runway. A regular economy seat is made for 12 yo twiggy. I understand Delta wants to push for an upgrade, but after sitting in a Comfort seat and in First class. I would say First class is not worthy of my money. The landing was delayed because of the weather in NYC, I don't hold that against Delta, of course. The Captain did alert us to that upon takeoff in Vegas and again as we reached NY.

No one fussed at me about my pap machine as a 3rd pice on the plane. Boarding was pleasant and smooth. The boarding agent in Anchorage was a fun character- he could be in a movie. :~) The on-board crew were downright pleasant. No militant attitudes on Delta. Like all planes these days the seats are too narrow for standard Americans and at 5’2” there is barely enough leg room. I don’t know how tall people fold themselves into the seats. But that’s nothing specific to Delta

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

After all the weather issues at least they got me to my destination the next day

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

Really disappointed with in flight entertainment, 6 hr flight with no built in screens

I was put in a middle seat with the people on either side of me kept passing their grandchild over me and talking back and forth while I was trying to rest or watch a movie. So inconsiderate and totally disturbing. I asked if they would sit next to each other to alleviate the constant impeding my comfort but they refused.

The flight crew were great. Very helpful and friendly. Seats comfy. Thanks

Overall it was a good flight, but the food should be looked at. No options. The seat was also uncomfortable and very tight.

Late boarding, full flight. Absolutely no food and barely a bag of pretzels. No video screens and slim pickings of movies. No live tv and poor selection of shows.

It’s great, I’ve always fly & ride with Hawaiian Airlines going Inter island or to the mainland.

Flight delays - issues with delays waiting for a gate in Denver

Pre-Flight check-in Staff did a terrific job correcting a seat mis-assignment problem after I checked in the night before my flight. They really stepped up to make my flight home a joy. It was also my birthday, so the flight crew made me feel special a little treat.

Our flight delayed 2 hours, no WiFi in flight and the snack option isn’t great either.

I was unable to get a check im and get a boarding pass. I tried at the desk of the flight operator Alaska, was told to go to Hawaiian and almost had to go back to Alaskan. In the end inwas told to go thru security and directly to the gate without checking in. It would have been more helpful to have the details rather than walking all over the terminals trying to check in.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

Book cheap flights from Illinois to Washington

Recent round-trip flight deals

8/7Thu
nonstopAlaska Airlines
4h 42mORD-SEA
8/13Wed
nonstopAlaska Airlines
4h 05mSEA-ORD
$94
8/14Thu
nonstopHawaiian Airlines
4h 42mORD-SEA
8/18Mon
nonstopHawaiian Airlines
4h 07mSEA-ORD
$96
8/23Sat
nonstopDelta
4h 37mORD-SEA
8/30Sat
nonstopDelta
4h 01mSEA-ORD
$105
10/21Tue
nonstopSouthwest
4h 25mMDW-PDX
10/29Wed
nonstopSouthwest
3h 55mPDX-MDW
$105
9/10Wed
nonstopSouthwest
4h 30mMDW-SEA
9/17Wed
nonstopSouthwest
3h 55mSEA-MDW
$105
8/23Sat
nonstopAmerican Airlines
4h 37mORD-PDX
8/30Sat
nonstopAmerican Airlines
3h 58mPDX-ORD
$106
8/20Wed
nonstopAmerican Airlines
4h 29mORD-SEA
8/26Tue
nonstopAmerican Airlines
4h 06mSEA-ORD
$106
9/4Thu
nonstopDelta
4h 30mORD-SEA
9/11Thu
nonstopDelta
4h 00mSEA-ORD
$107
11/6Thu
nonstopUnited Airlines
4h 34mORD-SEA
11/11Tue
1 stopUnited Airlines
7h 50mSEA-ORD
$111
8/12Tue
nonstopUnited Airlines
4h 43mORD-SEA
8/19Tue
nonstopUnited Airlines
4h 00mSEA-ORD
$127

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Recent one-way flight deals

8/25Mon
nonstopHawaiian Airlines
4h 30mORD-SEA
$50
8/14Thu
nonstopHawaiian Airlines
4h 25mORD-PDX
$52
8/11Mon
nonstopAlaska Airlines
4h 25mORD-PDX
$53
8/12Tue
nonstopDelta
4h 30mORD-SEA
$53
9/8Mon
nonstopDelta
4h 30mORD-SEA
$55
9/20Sat
nonstopUnited Airlines
4h 12mORD-GEG
$57
9/27Sat
1 stopUnited Airlines
8h 58mORD-PDX
$58
10/11Sat
nonstopAlaska Airlines
4h 27mORD-SEA
$66
8/19Tue
1 stopAmerican Airlines
8h 17mSTL-SEA
$80
9/6Sat
1 stopAmerican Airlines
7h 16mSTL-PDX
$87

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Last minute flights from Illinois to Washington

Last minute flight, train and bus deals

7/13Sun
multi-stopFrontier
7h 23mORD-GEG
7/15Tue
multi-stopFrontier
10h 19mGEG-ORD
$195
7/15Tue
multi-stop
18h 24mORD-PDX
7/25Fri
multi-stop
12h 53mPDX-ORD
$203
7/15Tue
multi-stopDelta
7h 49mORD-GEG
7/23Wed
multi-stopDelta
6h 18mGEG-ORD
$297
7/12Sat
multi-stopDelta
7h 22mORD-GEG
7/15Tue
multi-stopDelta
8h 53mGEG-ORD
$300
7/15Tue
nonstopAlaska Airlines
4h 42mORD-SEA
7/23Wed
nonstopAlaska Airlines
4h 05mSEA-ORD
$313
7/15Tue
nonstopAlaska Airlines
4h 34mORD-SEA
7/25Fri
multi-stopAlaska Airlines
13h 39mSEA-ORD
$323
7/15Tue
nonstopUnited Airlines
4h 21mORD-GEG
7/23Wed
nonstopUnited Airlines
3h 39mGEG-ORD
$326
7/11Fri
nonstopAmerican Airlines
3h 50mORD-GEG
7/14Mon
nonstopAmerican Airlines
3h 41mGEG-ORD
$329
7/11Fri
multi-stopAmerican Airlines
7h 08mORD-GEG
7/16Wed
nonstopAmerican Airlines
3h 41mGEG-ORD
$333
7/15Tue
nonstopUnited Airlines
4h 21mORD-GEG
8/12Tue
multi-stopUnited Airlines
7h 02mGEG-ORD
$356

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Everything you need to know for your flight to Washington

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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