HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$54+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
nov. 25 — dic. 21
lun. 11/25
lun. 12/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Illinois with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) to Illinois (USIL). 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 noviembre 20, 2024.

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 noviembre 20, 2024.

This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/124:58 pmSEA - MDW
1 stop25h 16mFrontier
lun. 12/164:27 pmMDW - SEA
2 stops30h 19mFrontier
Deal found 11/18$174
This CheapTickets 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/121:40 pmSEA - ORD
1 stop27h 50mMultiple Airlines
lun. 12/166:32 amORD - SEA
Nonstop4h 48mMultiple Airlines
Deal found 11/19$175
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/139:57 amSEA - ORD
1 stop7h 33mFrontier
lun. 12/168:25 pmORD - SEA
1 stop23h 56mFrontier
Deal found 11/20$176
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/3112:31 amSEA - ORD
Nonstop4h 03mAmerican Airlines
vie. 1/109:55 amORD - SEA
Nonstop4h 47mAmerican Airlines
Deal found 11/19$178
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.
sáb. 12/145:51 pmSEA - ORD
Nonstop3h 56mAlaska Airlines
lun. 12/166:32 amORD - SEA
Nonstop4h 48mAlaska Airlines
Deal found 11/19$183
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.
vie. 12/135:59 pmSEA - ORD
Nonstop4h 00mDelta
lun. 12/166:05 amORD - SEA
Nonstop4h 50mDelta
Deal found 11/20$187
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/105:15 amSEA - ORD
1 stop10h 13mSpirit Airlines
jue. 12/129:53 pmORD - SEA
1 stop16h 02mSpirit Airlines
Deal found 11/19$190
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/259:40 pmPDX - ORD
1 stop12h 12mMultiple Airlines
jue. 11/286:00 amORD - PDX
1 stop20h 29mMultiple Airlines
Deal found 11/19$210
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/77:16 pmPDX - ORD
1 stop8h 14mSpirit Airlines
mar. 12/106:35 amORD - PDX
3 stops15h 53mSpirit Airlines
Deal found 11/19$211
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/47:35 amPDX - MDW
1 stop14h 38mFrontier
jue. 12/1212:43 pmMDW - PDX
1 stop23h 04mFrontier
Deal found 11/20$213
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.
mié. 12/1812:45 pmPDX - ORD
1 stop28h 49mFrontier
jue. 1/28:34 pmORD - PDX
1 stop23h 45mFrontier
Deal found 11/19$216
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/103:20 pmPDX - STL
2 stops7h 37mDelta
mié. 12/112:10 pmSTL - PDX
1 stop9h 53mDelta
Deal found 11/19$226

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

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

mié. 1/29

10:13 am-5:30 am

1 stop17h 17m

Chicago O'Hare Intl

jue. 2/6

6:36 pm-8:50 am

1 stop16h 14m

$174

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

jue. 12/12

4:58 pm-8:14 pm

1 stop25h 16m

Chicago Midway

lun. 12/16

4:27 pm-8:46 pm

2 stops30h 19m

$174

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

vie. 12/13

9:57 am-7:30 pm

1 stop7h 33m

Chicago O'Hare Intl

lun. 12/16

8:25 pm-6:21 pm

1 stop23h 56m

$176

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

mié. 1/15

7:10 am-1:15 pm

Nonstop4h 05m

Chicago O'Hare Intl

dom. 1/19

7:00 am-9:58 am

Nonstop4h 58m

$178

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

mar. 1/14

10:40 am-4:40 pm

Nonstop4h 00m

Chicago Midway

jue. 1/16

5:35 pm-8:10 pm

Nonstop4h 35m

$179

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

sáb. 12/14

5:51 pm-11:47 pm

Nonstop3h 56m

Chicago O'Hare Intl

lun. 12/16

6:32 am-9:20 am

Nonstop4h 48m

$183

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

mar. 12/10

5:15 am-5:28 pm

1 stop10h 13m

Chicago O'Hare Intl

jue. 12/12

9:53 pm-11:55 am

1 stop16h 02m

$190

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

dom. 12/8

12:15 am-6:17 am

Nonstop4h 02m

Chicago O'Hare Intl

jue. 12/12

8:25 pm-11:15 pm

Nonstop4h 50m

$209

PortlandChicago

PDX - ORD

PDXORD

Portland

sáb. 12/7

7:16 pm-5:30 am

1 stop8h 14m

Chicago O'Hare Intl

mar. 12/10

6:35 am-8:28 pm

3 stops15h 53m

$211

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

jue. 1/16

5:29 am-1:18 pm

1 stop5h 49m

Lambert-St Louis

mar. 1/21

6:00 am-12:55 pm

1 stop8h 55m

$212

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 60 results
1
2
3
...
6

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 noviembre 20, 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.

Weekly flight availability from State of Washington to Illinois

Explore weekly flight availability from Washington to Illinois. 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 noviembre 20, 2024.

The most flights from USWA to USIL are scheduled on a Monday (34 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

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 noviembre 20, 2024.
Read through reviews of airlines operating flights from Washington to Illinois, such as American Airlines, Spirit Airlines and Delta. 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
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

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

JetBlue
7.5
Good
3,394 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

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 Washington to Illinois. 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 State of Washington to Illinois one-way?

    One-way options have recently been found by users for as low as $54 on Frontier. Other airlines that offer cheap prices include Delta from $85 and Spirit Airlines from $86 one-way.

  • 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.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Fort Lauderdale flights
LaGuardia to Miami flights
Newark to Fort Lauderdale flights
Dallas/Fort Worth to LaGuardia flights
John F Kennedy Intl to Miami flights
Newark to Miami flights
John F Kennedy Intl to Orlando flights
Los Angeles to John F Kennedy Intl flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
Los Angeles to Newark flights
Dallas/Fort Worth to John F Kennedy Intl flights
Newark to Orlando flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Fort Lauderdale flights
Dallas/Fort Worth to Newark flights
LaGuardia to Orlando flights
San Francisco to John F Kennedy Intl flights
Miami to LaGuardia flights
Miami to John F Kennedy Intl flights
Fort Lauderdale to LaGuardia flights
Newark to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
John F Kennedy Intl to Atlanta flights
Fort Lauderdale to Newark flights
Atlanta to John F Kennedy Intl flights
John F Kennedy Intl to San Francisco flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Honolulu flights
Dallas/Fort Worth to Orlando flights
Seattle to Los Angeles flights
O'Hare Intl to Orlando flights
Dallas/Fort Worth to Las Vegas flights
Boston to Orlando flights
Dallas/Fort Worth to Los Angeles flights
Miami to Newark flights
O'Hare Intl to Miami flights
Los Angeles to LaGuardia flights
Fort Lauderdale to John F Kennedy Intl flights
John F Kennedy Intl to West Palm Beach flights
O'Hare Intl to Dallas/Fort Worth flights
Orlando to John F Kennedy Intl flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Fort Lauderdale flights
LaGuardia to Los Angeles flights
San Francisco to Newark flights
LaGuardia to Atlanta flights
Baltimore to Fort Lauderdale flights

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 2,629,791 searches. Data last updated noviembre 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$100Average$398FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$116Average$245FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$127Average$507FlexibilityNo cancel feeOn-time75%
FrontierCheapest$131Average$267FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$136Average$517FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$154Average$531FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$200Average$401FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines