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Cheap flights from Washington (WA) to Illinois (IL)

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How to find the cheapest flight from
Washington to Illinois

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

Travelers have found it’s best to book a flight 37 days in advance to save up to 10% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 37 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Washington to Illinois 1-2 weeks in advance for as low as $177, or $177 for flights within the next 24 hours.

Cheap flights from Washington to Illinois in August, September 2020

The best prices found for Washington to Illinois flights for August, September
17 Aug - 24 Aug
$89pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
3 Aug - 5 Aug
$93pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
22 Aug - 6 Sep
$97pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Washington to Illinois 2020 flight deals

Cheap flights to Illinois from Washington found for this year
17 Aug - 24 Aug
$89pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
3 Aug - 6 Aug
$93pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
22 Aug - 6 Sep
$97pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Illinois from Washington

Save time with Washington to Illinois direct flight deals
15 Oct - 18 Oct
$105pp
SEA
Seattle/Tacoma Intl
Major Airline
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Major Airline
Non-Stop
SEA
Seattle/Tacoma Intl
15 Sep - 20 Sep
$111pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
10 Sep - 14 Sep
$117pp
SEA
Seattle/Tacoma Intl
Delta
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Delta
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Washington to Illinois

Late deals on round-trip flights to Illinois from Washington, departing today and this week
26 Jul - 29 Jul
$98pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Jul - 3 Aug
$108pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Jul - 28 Aug
$117pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

One-way flights to Illinois from Washington

The cheapest one-way flights from Washington to Illinois
6:30 pm - 4:53 am
Sun Country Air
1 Stop
8h 23m
SEA - ORD
Sun Country Air
$63
Ovago
8:40 pm - 4:36 am
Delta
1 Stop
5h 56m
SEA - MDW
Delta
$64
Delta
4:14 pm - 3:11 pm
Spirit Airlines
1 Stop
20h 57m
SEA - ORD
Spirit Airlines
$75
Kiwi.com

Related info for your journey

Useful info, stats and facts about Washington to Illinois flights.

Flight FAQs

From Washington to Illinois

Are flight prices decreasing from Washington to Illinois due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Washington and Illinois for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

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

Yes, there are multiple flights from Washington to Illinois for under $100. The cheapest flight booked recently is on Multiple Airlines for just $93, but on average you can expect to pay $108.

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

Cheapflights has at least 20 direct flights from Washington to Illinois under $200. A good price for a nonstop flight from Washington to Illinois is less than $141.

Are there last-minute flights available from Washington to Illinois for under $100?

There are currently 20+ open flights from Washington to Illinois within the next 7 days for less than $100.

What days are nonstop flights available from Washington to Illinois?

Nonstop flights can be found on the following days: Sunday, Thursday, Friday, Saturday.

What are the most popular airlines that fly from Washington to Illinois?

The most popular airlines flying from Washington to Illinois are Major Airline, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

What are the most popular routes from Washington to Illinois?

The most popular route from Washington to Illinois is Seattle/Tacoma Intl - Chicago O'Hare Intl. You may also consider Seattle/Tacoma Intl - Chicago Midway or Seattle/Tacoma Intl - Moline Quad-City.

What are the cheapest Flights from Washington to Illinois?

Looking for the cheapest flight from Washington to Illinois? While on average our users pay $223, our data indicates the cheapest price to be $82. The most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl), is priced around $88.

What are the most reliable airlines from Washington to Illinois?

The top 3 most reliable airlines when flying from Washington to Illinois are Royal Jordanian (100%), Iberia (100%) and Singapore Airlines (100%).

How long is the flight from Washington to Illinois?

A quick flight from Washington to Illinois can take about 3h 42m. Delta provides one of the quickest options available for as low as $123. Generally, flights for this route are nonstop.

What are the cheapest airlines flying from Washington to Illinois round-trip?

Flying on Spirit Airlines is currently your cheapest option to Illinois, with prices starting at $101. Additional round-trip tickets that might be worth considering are offered by Allegiant Air and Delta, with the lowest prices starting at $119 and $121, respectively.

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

$31 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and Sun Country Air, with prices starting from $59 and $63, respectively.

Destination information for Illinois

Things to know before you go. Useful info for your trip from Washington to Illinois
Flight duration
4h 10m

Airports servicing

Deer Harbor (DHB)
Wenatchee (EAT)
Eastsound Orcas Island (ESD)
Friday Harbor SPB (FBS)
Port Angeles (FRD)

Airports servicing

Bloomington (BMI)
Champaign (CMI)
Decatur (DEC)
Moline (MLI)
Marion (MWA)
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