Cheap flights from Illinois to Washington from $48
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Washington departing on 2/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap round-trip flights
These are some of the best round-trip flight deals from Illinois to Washington that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Illinois to Washington.
Cheap last minute flights
Planning a quick getaway from Illinois to Washington? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Washington, so you can enjoy a seamless trip without layovers.
Cheap bus & train deals from Illinois to Washington
Find recent round-trip train or bus tickets from Illinois to Washington.
All round-trip flight deals from Illinois to Washington
The cheapest plane tickets from Illinois to Washington found on KAYAK recently.
Alaska Airlines flights from Illinois to State of Washington
Our best Alaska Airlines deals on Illinois to State of Washington flight tickets
Alaska Airlines![Alaska Airlines]()
Feb 15![Alaska Airlines]()
Feb 22
ORD7:45 amChicago O'Hare Intl
4h 43m
SEA10:28 amSeattle/Tacoma Intl
SEA8:55 amSeattle/Tacoma Intl
4h 14m
ORD3:09 pmChicago O'Hare Intl
Alaska Airlines![Alaska Airlines]()
Feb 15![Alaska Airlines]()
Feb 22
ORD7:00 pmChicago O'Hare Intl
15h 15m
1 stop
SEA8:15 amSeattle/Tacoma Intl
SEA8:55 amSeattle/Tacoma Intl
4h 14m
ORD3:09 pmChicago O'Hare Intl
Frontier flights from Illinois to State of Washington
Our best Frontier deals on Illinois to State of Washington flight tickets
Frontier![Frontier]()
Mar 1![Frontier]()
Mar 5
MDW6:40 amChicago Midway
8h 06m
1 stop
SEA12:46 pmSeattle/Tacoma Intl
SEA1:36 pmSeattle/Tacoma Intl
8h 41m
1 stop
MDW12:17 amChicago Midway
Frontier![Frontier]()
Mar 3![Frontier]()
Mar 6
ORD6:50 amChicago O'Hare Intl
7h 46m
1 stop
SEA12:36 pmSeattle/Tacoma Intl
SEA2:02 pmSeattle/Tacoma Intl
8h 21m
1 stop
ORD12:23 amChicago O'Hare Intl
See travel insights to Washington from
How to get the cheapest flight ticket from Illinois to State of Washington
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
Other information
What is the cheapest month to fly to State of Washington?
The month of February is, on average, the cheapest month to fly to State of Washington from Illinois, with most prices found around $197. If you aren’t able to travel to State of Washington during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $226.
What is the cheapest day to depart on your flight to State of Washington?
The cheapest day to depart from Illinois to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $349. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to State of Washington for around $448.
What is the cheapest time of day to depart on your flight to State of Washington?
The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $319. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $400 on average. Flights to State of Washington from Illinois at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Illinois to Washington flight route?
Fly from Chicago Midway to Seattle/Tacoma Intl for the best Illinois - Washington flight prices
How far in advance should I book a flight to State of Washington?
You are more likely to see cheaper flights to State of Washington from Illinois when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $284 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Illinois for as low as $231 on momondo.
What cabin class options are available on Illinois to Washington flights?
There are 4 cabin classes available to choose from on Illinois to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Illinois to Washington?
Frontier, Spirit Airlines, and United Airlines are the most popular carriers operating from Illinois to Washington
What airlines fly to State of Washington?
Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to State of Washington from Illinois according to our data. Alaska Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 8 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.
How many flights depart from Illinois to State of Washington on average per day?
As of January 2025, there are 31 flights per day flying from Illinois to State of Washington. The most common time of day flights depart is 7:00AM, with 41% of flights taking off at noon.
How many flights depart from Illinois to State of Washington on average per week?
As of January 2025, 219 flights take off from Illinois and land in State of Washington each week. The most common flight departure day for this route is Mon, with 21% of weekly flights taking off on this day.
Cheap Illinois to State of Washington flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to State of Washington
Best Price Found | $48 |
|---|---|
Fastest flight time | 3h 55m |
Direct flights | Every day |
Airports in State of Washington | 3 airports |
When did momondo last update prices for flights from Illinois to Washington?
Prices for flights from Illinois to Washington were last updated today.
How many operators does momondo search for flights from Illinois to Washington?
As of January 2025, there are 8 operators available to choose from for flights from Illinois to Washington.
How old do you have to be to fly from Illinois to Washington?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to State of Washington?
momondo data reveals that the most frequently booked plane model on the route from Illinois to State of Washington is Boeing 737-800, representing 24.81% of all bookings. The subsequent popular models are Boeing 737-900 at 15.93%, Airbus A320-100/200 at 15.51%, and Boeing 737 MAX 8 at 12.55%.
Best airlines flying from Illinois to State of Washington
Compare and see reviews for airlines that fly from Illinois to State of Washington with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $118 | Free Cancellation | Rating 8.0 9,707 reviews | |||
| PriceFrom $122 | Free Cancellation | Rating 6.0 3,441 reviews | |||
| PriceFrom $124 | Free Cancellation | Rating 6.3 8,111 reviews | |||
| PriceFrom $126 | Free Cancellation | Rating 8.0 8,512 reviews | |||
| PriceFrom $147 | Free Cancellation | Rating 7.4 8,975 reviews | |||
| PriceFrom $157 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $186 | Free Cancellation | Rating 8.1 4,654 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Washington?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Washington. momondo saves you time and could save you money on your trip.
Can I find flights from Illinois to Washington with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Illinois to Washington flights to just show those with flexible booking policies.
How can momondo help me find flights from Illinois to Washington?
Once you have performed a search for Illinois to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Illinois to Washington right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from Illinois and alert you when they change.
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