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$46+ Cheap flights from Washington to Illinois

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
nov. 5 — nov. 121
1 adult
mar. 11/5
mar. 11/12
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Find flight deals from Washington to Illinois

Cheapest flights from Washington to Illinois
Explore the most affordable flight options available from Washington to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 31, 2024.

This Frontier deal was found by Cheapflights users on 10/31. 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.
vie. 12/62:34 pmSEA - ORD
1 stop8h 01mFrontier
vie. 12/137:25 amORD - SEA
1 stop8h 09mFrontier
Deal found 10/31$167
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
sáb. 11/97:08 pmSEA - ORD
1 stop11h 24mMultiple Airlines
lun. 11/181:09 pmORD - SEA
1 stop7h 30mMultiple Airlines
Deal found 10/30$168
This Frontier deal was found by Cheapflights users on 10/30. 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.
vie. 11/1510:34 amSEA - MDW
1 stop9h 51mFrontier
dom. 11/176:00 amMDW - SEA
1 stop11h 51mFrontier
Deal found 10/30$168
This Gotogate deal was found by Cheapflights users on 10/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/512:50 pmSEA - ORD
1 stop14h 40mSpirit Airlines
mié. 12/119:10 pmORD - SEA
1 stop16h 45mSpirit Airlines
Deal found 10/29$171
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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.
dom. 12/86:00 amSEA - ORD
Nonstop4h 07mAlaska Airlines
lun. 12/96:32 amORD - SEA
Nonstop4h 48mAlaska Airlines
Deal found 10/30$172
This Delta deal was found by Cheapflights users on 10/30. 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.
mié. 11/205:59 pmSEA - ORD
Nonstop3h 59mDelta
lun. 11/256:45 pmORD - SEA
Nonstop5h 03mDelta
Deal found 10/30$174
This American Airlines deal was found by Cheapflights users on 10/30. 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.
mar. 11/1912:35 amSEA - ORD
Nonstop4h 01mAmerican Airlines
lun. 11/259:55 amORD - SEA
Nonstop4h 45mAmerican Airlines
Deal found 10/30$175
This Orbitz deal was found by Cheapflights users on 10/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/812:03 pmPDX - ORD
1 stop10h 36mMultiple Airlines
mié. 12/111:07 pmORD - PDX
1 stop11h 48mMultiple Airlines
Deal found 10/30$197
This Frontier deal was found by Cheapflights users on 10/31. 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.
dom. 11/106:05 amPDX - ORD
1 stop12h 17mFrontier
mar. 11/194:44 pmORD - PDX
1 stop9h 30mFrontier
Deal found 10/31$198
This FlightHub deal was found by Cheapflights users on 10/30. 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.
jue. 12/1212:03 pmPDX - MDW
1 stop10h 10mFrontier
lun. 12/1612:43 pmMDW - PDX
1 stop25h 51mFrontier
Deal found 10/30$198
This FareScan deal was found by Cheapflights users on 10/30. 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/249:33 pmPDX - ORD
1 stop12h 19mSpirit Airlines
mar. 12/39:10 pmORD - PDX
2 stops25h 18mSpirit Airlines
Deal found 10/30$200
This United Airlines deal was found by Cheapflights users on 10/30. 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.
dom. 11/1711:55 pmSEA - ORD
Nonstop3h 57mUnited Airlines
jue. 11/219:20 amORD - SEA
Nonstop4h 48mUnited Airlines
Deal found 10/30$208

Find flights from Washington to Illinois within your budget

Customize your flight search to find flights from Washington to Illinois 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 2,570,725 searches. Data last updated octubre 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

lun. 11/18

10:25 am-7:38 pm

1 stop7h 13m

$52

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

mar. 12/3

9:35 pm-5:28 pm

2 stops17h 53m

$84

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

mié. 11/20

11:45 am-5:47 pm

Nonstop4h 02m

$85

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

dom. 11/24

10:30 pm-4:30 am

Nonstop4h 00m

$90

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

mié. 12/11

12:15 am-6:17 am

Nonstop4h 02m

$94

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

jue. 11/21

9:05 am-3:10 pm

Nonstop4h 05m

$94

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

vie. 3/7

11:59 pm-5:53 am

Nonstop3h 54m

$97

PortlandChicago

PDX - ORD

PDXORD

Portland

mié. 12/18

6:04 pm-10:45 am

1 stop14h 41m

$120

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

jue. 12/5

12:50 pm-7:55 pm

3 stops29h 05m

$154

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

sáb. 2/15

10:05 pm-10:42 am

1 stop10h 37m

$84

Flights are sorted by cheapest first

Deals found on 10/30

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

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

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

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

Currently, September is the cheapest month in which you can book a flight from State of Washington to Illinois (average of $232). Flying from State of Washington to Illinois in June is currently the most expensive (average of $308). 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 WA to IL?

Find hourly flight availability from Washington to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 31, 2024.

When flying from State of Washington to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated octubre 31, 2024.
Read through reviews of airlines operating flights from Washington to Illinois, such as Frontier, Southwest and Alaska Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,116 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.3

Reviews

1 / 10

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

Southwest
8.1
Very good
5,116 reviews
Southwest
8.1
Very good
5,116 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.3

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,420 reviews
Southwest
8.1
Very good
5,116 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.3

Reviews

1 / 10

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

Delta
8.0
Very good
8,835 reviews
Southwest
8.1
Very good
5,116 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.3

Reviews

1 / 10

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

Aeromexico
7.5
Good
2,032 reviews
Southwest
8.1
Very good
5,116 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.3

Reviews

1 / 10

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

United Airlines
7.4
Good
9,240 reviews
Southwest
8.1
Very good
5,116 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.3

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 Washington to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from State of Washington to Illinois for under $100 on Cheapflights?

    Yes, there are multiple flights from State of Washington to Illinois for under $100. The cheapest flight booked recently is on Frontier for just $98, but on average you can expect to pay $150.

  • Are there nonstop flights from State of Washington to Illinois for under $200 on Cheapflights?

    Cheapflights has at least 11 direct flights from State of Washington to Illinois under $200. A good price for a nonstop flight from State of Washington to Illinois is less than $230.

  • Are there last-minute flights available from State of Washington to Illinois for under $200?

    There are currently 20+ open flights from State of Washington to Illinois within the next 7 days for less than $200.

  • What days are nonstop flights available from State of Washington to Illinois?

    You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

  • How many flights depart from State of Washington to Illinois on average per day?

    Travelers can expect 70 flights from State of Washington to Illinois on average per day.
    Early Morning (Midnight to 6am) - 17% of flight departures
    Morning (6am - Noon) - 36% of flight departures
    Afternoon (Noon - 6pm) - 16% of flight departures
    Evening (6pm - Midnight) - 31% of flight departures

  • How long is the flight from State of Washington to Illinois?

    For as low as $98, Frontier can have you in Illinois from State of Washington in 3h 59m. The distance between State of Washington and Illinois is about 1725 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Illinois one-way?

    One-way options have recently been found by users for as low as $46 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $52 and Alaska Airlines from $69 one-way.

  • What does SEA to ORD mean?

    This is defined as Seattle/Tacoma Intl Airport (SEA) and Chicago O'Hare Intl Airport (ORD). Codes like Chicago O'Hare Intl Airport are often used to just call airports uniquely. Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Champaign University-Willard Airport (CMI) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Washington to Illinois that include extra baggage allowance?

    The amount of baggage you can bring on your Washington to Illinois flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Washington to Illinois with specific airlines?

    Yes, Cheapflights allows you to browse and filter Washington to Illinois flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Washington to Illinois that allow pets onboard?

    Many airlines flying from Washington to Illinois offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Washington to Illinois?

    Yes, you can often find last-minute deals on Washington to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the State of Washington to Illinois flight deals updated?

    The State of Washington to Illinois flight deals you see on this page were last updated on 10/31.

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

    Currently, September is the cheapest month in which you can book a flight from State of Washington to Illinois (average of $232). Flying from State of Washington to Illinois in June is currently the most expensive (average of $308). 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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Top 7 airlines flying from Washington to Illinois

Discover the top 7 airlines that operate flights from Washington to Illinois. 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 2,570,725 searches. Data last updated octubre 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$103Average$405FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$116Average$560FlexibilityNo cancel feeOn-time75%
FrontierCheapest$118Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$137Average$516FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$148Average$243FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$154Average$523FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$170Average$388FlexibilityNo cancel feeOn-time63%
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