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$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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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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 November 20, 2024.

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 November 20, 2024.

This KAYAK deal was found by Cheapflights users on 11/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/102:10 pmORD - SEA
Nonstop4h 48mDelta
Wed 12/117:10 amSEA - ORD
Nonstop4h 05mDelta
Deal found 11/19$167
This Frontier deal was found by Cheapflights users on 11/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/97:25 amORD - SEA
1 stop8h 09mFrontier
Fri 12/139:57 amSEA - ORD
1 stop7h 33mFrontier
Deal found 11/20$168
This Booking.com deal was found by Cheapflights users on 11/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:36 pmORD - SEA
1 stop16h 21mMultiple Airlines
Tue 12/105:15 amSEA - ORD
1 stop10h 13mMultiple Airlines
Deal found 11/19$171
This FlightHub deal was found by Cheapflights users on 11/20. 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 12/119:10 pmORD - SEA
1 stop16h 45mSpirit Airlines
Sun 12/1512:50 pmSEA - ORD
1 stop14h 40mSpirit Airlines
Deal found 11/20$176
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/254:48 pmORD - PDX
1 stop9h 41mMultiple Airlines
Mon 12/29:40 pmPDX - ORD
1 stop12h 12mMultiple Airlines
Deal found 11/18$182
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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.
Thu 12/126:32 amORD - SEA
Nonstop4h 48mAlaska Airlines
Sat 12/145:51 pmSEA - ORD
Nonstop3h 56mAlaska Airlines
Deal found 11/19$183
This FlightHub deal was found by Cheapflights users on 11/19. 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.
Thu 11/286:00 amORD - PDX
1 stop20h 29mFrontier
Fri 12/612:03 pmPDX - ORD
1 stop10h 32mFrontier
Deal found 11/19$189
This FlightHub deal was found by Cheapflights users on 11/19. 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 12/109:10 pmORD - PDX
1 stop25h 18mSpirit Airlines
Fri 12/135:00 amPDX - ORD
1 stop7h 26mSpirit Airlines
Deal found 11/19$190
This United Airlines deal was found by Cheapflights users on 11/18. 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.
Wed 12/119:20 amORD - SEA
Nonstop4h 48mUnited Airlines
Sat 1/119:00 amSEA - ORD
1 stop8h 31mUnited Airlines
Deal found 11/18$193
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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.
Wed 12/257:00 amORD - PDX
Nonstop4h 38mAlaska Airlines
Wed 1/17:00 amPDX - ORD
Nonstop4h 05mAlaska Airlines
Deal found 11/19$197
This Frontier deal was found by Cheapflights users on 11/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/217:00 amMDW - PDX
1 stop10h 44mFrontier
Sat 1/47:06 pmPDX - MDW
1 stop12h 43mFrontier
Deal found 11/19$208
This Delta deal was found by Cheapflights users on 11/20. 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.
Sat 12/147:20 amSTL - SEA
1 stop7h 15mDelta
Mon 12/165:30 amSEA - STL
1 stop5h 54mDelta
Deal found 11/20$211

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 2,629,791 searches. Data last updated November 20, 2024.

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Route

Depart

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Price

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 12/10

2:10 pm-4:58 pm

Nonstop4h 48m

Seattle/Tacoma Intl

Wed 12/11

7:10 am-1:15 pm

Nonstop4h 05m

$167

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

Fri 1/10

7:15 am-2:19 pm

1 stop9h 04m

Seattle/Tacoma Intl

Sun 1/12

3:17 pm-12:13 am

1 stop6h 56m

$168

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 12/9

7:25 am-1:34 pm

1 stop8h 09m

Seattle/Tacoma Intl

Fri 12/13

9:57 am-7:30 pm

1 stop7h 33m

$168

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 12/5

6:36 pm-8:57 am

1 stop16h 21m

Seattle/Tacoma Intl

Tue 12/10

5:15 am-5:28 pm

1 stop10h 13m

$171

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 12/11

9:10 pm-11:55 am

1 stop16h 45m

Seattle/Tacoma Intl

Sun 12/15

12:50 pm-5:30 am

1 stop14h 40m

$176

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

Thu 1/30

9:15 am-11:50 am

Nonstop4h 35m

Seattle/Tacoma Intl

Tue 2/4

10:40 am-4:40 pm

Nonstop4h 00m

$179

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Sat 1/18

10:47 pm-9:21 am

1 stop12h 34m

Portland

Wed 1/22

7:00 am-1:07 pm

Nonstop4h 07m

$181

ChicagoPortland

ORD - PDX

ORDPDX

Chicago O'Hare Intl

Sat 2/22

6:30 pm-12:37 am

1 stop8h 07m

Portland

Fri 2/28

9:18 pm-5:05 am

1 stop29h 47m

$182

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 12/12

6:32 am-9:20 am

Nonstop4h 48m

Seattle/Tacoma Intl

Sat 12/14

5:51 pm-11:47 pm

Nonstop3h 56m

$183

ChicagoPortland

MDW - PDX

MDWPDX

Chicago Midway

Mon 2/17

6:40 am-12:37 am

1 stop19h 57m

Portland

Wed 2/19

6:32 am-12:17 am

1 stop15h 45m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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 November 20, 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 November 20, 2024.

The most flights from USIL to USWA are scheduled on a Monday (35 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 November 20, 2024.
Peruse reviews from past customers who have flown with Delta, Frontier and Spirit Airlines 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.
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

WestJet
7.3
Good
2,811 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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. Spirit Airlines flights start at $91 while deals on Southwest start at $94 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.

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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.
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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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$109Average$393FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$112Average$574FlexibilityNo cancel feeOn-time75%
FrontierCheapest$118Average$223FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$125Average$243FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$142Average$521FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$143Average$530FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$203Average$333FlexibilityNo cancel feeOn-time63%
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