Washington

$54+ Cheap flights from Illinois to Washington

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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
Dec 27 — Jan 31
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Cheap flight deals from Illinois to Washington

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Washington (USWA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 22, 2024.

Round-trip from

$179
(FlightHub)

One-way from

$54
(Cheapflightsfares)
From Illinois to Washington
One-way flight from Illinois to Washington

Find flight deals from Illinois to Washington

Cheapest flights from Illinois to Washington
Explore the most affordable flight options available from Illinois to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2024.

This Mytrip deal was found by Cheapflights users on 12/21. 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.
Mon 12/2310:04 pmMDW - PDX
1 stop19h 40mFrontier
Mon 1/2712:03 pmPDX - MDW
1 stop10h 14mFrontier
Deal found 12/21$286
This FlightHub deal was found by Cheapflights users on 12/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2410:00 amORD - PDX
1 stop9h 30mMultiple Airlines
Wed 12/2512:45 pmPDX - ORD
1 stop9h 01mMultiple Airlines
Deal found 12/21$310
This FlightHub deal was found by Cheapflights users on 12/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:00 amORD - SEA
1 stop9h 10mFrontier
Tue 12/319:36 pmSEA - ORD
1 stop24h 10mFrontier
Deal found 12/21$310
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Sun 12/225:21 amSTL - PDX
1 stop7h 49mAmerican Airlines
Mon 12/3012:59 amPDX - STL
1 stop7h 46mAmerican Airlines
Deal found 12/21$335
This FlightHub deal was found by Cheapflights users on 12/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:00 amORD - PDX
1 stop11h 44mFrontier
Mon 12/301:05 pmPDX - ORD
1 stop8h 41mFrontier
Deal found 12/22$336
This Expedia deal was found by Cheapflights users on 12/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:00 amORD - SEA
1 stop9h 10mMultiple Airlines
Wed 1/16:00 pmSEA - ORD
Nonstop3h 59mMultiple Airlines
Deal found 12/21$354
This Delta deal was found by Cheapflights users on 12/22. 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 12/256:29 amSTL - SEA
1 stop10h 16mDelta
Wed 1/16:00 amSEA - STL
1 stop8h 59mDelta
Deal found 12/22$363
This Delta deal was found by Cheapflights users on 12/22. 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 12/315:50 pmORD - SEA
1 stop7h 45mDelta
Sun 1/55:55 pmSEA - ORD
Nonstop4h 04mDelta
Deal found 12/22$383
This FlightHub deal was found by Cheapflights users on 12/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/258:52 amORD - SEA
1 stop15h 31mSpirit Airlines
Mon 1/66:11 amSEA - ORD
1 stop22h 47mSpirit Airlines
Deal found 12/21$389
This FlightHub deal was found by Cheapflights users on 12/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/239:29 pmSTL - PDX
1 stop17h 05mFrontier
Thu 1/212:45 pmPDX - STL
1 stop17h 28mFrontier
Deal found 12/21$400
This Cheapflightsfares deal was found by Cheapflights users on 12/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2510:00 amORD - PDX
1 stop9h 30mSun Country Air
Wed 1/16:04 pmPDX - ORD
1 stop14h 53mSun Country Air
Deal found 12/21$400
This American Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/251:45 pmSTL - SEA
1 stop9h 33mAmerican Airlines
Mon 12/3012:31 amSEA - STL
1 stop9h 01mAmerican Airlines
Deal found 12/22$403

Find flights from Illinois to Washington within your budget

Customize your flight search to find flights from Illinois to Washington 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 December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 1/8

9:54 pm-12:19 am

1 stop28h 25m

Seattle/Tacoma Intl

Fri 1/10

3:15 pm-12:35 am

1 stop7h 20m

$179

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

Fri 1/10

7:15 am-2:19 pm

1 stop9h 04m

Seattle/Tacoma Intl

Mon 1/13

3:15 pm-12:13 am

1 stop6h 58m

$180

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 1/9

10:47 pm-12:14 am

1 stop27h 27m

Seattle/Tacoma Intl

Tue 1/14

5:55 pm-5:45 am

1 stop9h 50m

$185

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

Wed 1/29

9:15 am-11:50 am

Nonstop4h 35m

Seattle/Tacoma Intl

Tue 2/4

10:40 am-4:40 pm

Nonstop4h 00m

$187

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 1/23

7:15 am-10:11 am

Nonstop4h 56m

Seattle/Tacoma Intl

Mon 1/27

7:25 am-1:30 pm

Nonstop4h 05m

$187

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 1/18

6:55 pm-9:46 pm

Nonstop4h 51m

Seattle/Tacoma Intl

Sat 1/25

8:59 pm-1:07 pm

1 stop14h 08m

$188

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 2/14

8:25 pm-11:06 pm

Nonstop4h 41m

Seattle/Tacoma Intl

Tue 2/18

1:33 pm-7:43 pm

Nonstop4h 10m

$197

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Fri 1/10

1:39 pm-4:35 pm

1 stop28h 56m

Portland

Sun 1/12

12:03 pm-2:20 pm

1 stop24h 17m

$197

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 1/11

10:35 am-6:15 pm

1 stop9h 40m

Seattle/Tacoma Intl

Tue 1/14

11:59 pm-6:00 am

Nonstop4h 01m

$198

ChicagoPortland

MDW - PDX

MDWPDX

Chicago Midway

Wed 2/19

7:05 am-12:37 am

1 stop19h 32m

Portland

Sat 2/22

6:32 am-12:17 am

1 stop15h 45m

$198

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Washington

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

Travel insights for flights from Illinois to Washington

Get recent, data-driven insights about flights from Illinois to Washington including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Illinois to State of Washington (average of $238). Flying from Illinois to State of Washington in July is currently the most expensive (average of $411). 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 WA?

Find hourly flight availability from Illinois to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2024.

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

Weekly flight availability from Illinois to State of Washington

Explore weekly flight availability from Illinois to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 22, 2024.

The most flights from USIL to USWA are scheduled on a Friday (45 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (21 on average).

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated December 22, 2024.
Peruse reviews from past customers who have flown with Spirit Airlines, Alaska Airlines and Frontier from Illinois to Washington to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,804 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,804 reviews
8.1
Very good
4,804 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,537 reviews
8.1
Very good
4,804 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,594 reviews
8.1
Very good
4,804 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
3,265 reviews
8.1
Very good
4,804 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
9,028 reviews
8.1
Very good
4,804 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines to fly from Illinois to State of Washington one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $54. Delta flights start at $98 while deals on Spirit Airlines start at $100 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Washington 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 State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Illinois to State of Washington (average of $238). Flying from Illinois to State of Washington in July is currently the most expensive (average of $411). 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 Illinois to Washington

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Illinois to Washington

Discover the top 7 airlines that operate flights from Illinois to Washington. 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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$112Average$395FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$114Average$576FlexibilityNo cancel feeOn-time75%
FrontierCheapest$118Average$223FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$121Average$242FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$144Average$527FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$154Average$520FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$444FlexibilityNo cancel feeOn-time63%
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