Cheap flights from Chicago (CHI) to Seattle (SEA)

CHI — SEA
Feb 4 — Feb 111

The best prices from Chicago to Seattle/Tacoma Intl are usually found in February or January, booked 22 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

How to find the cheapest flight from Chicago (CHI) to Seattle (SEA)

All the information you need to plan the best CHI to SEA flight in 2023: compare Chicago to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.

CHI - SEA

Price

$186 - $553

SEA

Temperature

41 - 66.2 °F

SEA

Rainfall

0.7 - 6.6 inches

Popular inJuneHigh demand for flights, 39% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 45% potential price drop
Round-trip from$186From Chicago (CHI) to Seattle/Tacoma Intl
One-way from$88One-way flight from Chicago (CHI) to Seattle/Tacoma Intl

What is the cheapest day to fly round-trip from Chicago to Seattle?

Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 12% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Chicago to Seattle?

Travelers have found it’s best to book a flight 20 days in advance to save up to 21% 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 20 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 Chicago to Seattle 1-2 weeks in advance for as low as $394, or $493 for flights within the next 24 hours.

What is the cheapest month to fly from Chicago to Seattle?

Our data shows that February tends to be the cheapest month to fly to Seattle from Chicago. Users have commonly found prices around $340 for the month, but tickets can be as low as $157. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Chicago to Seattle (CHI - SEA)?

It’s typically best to fly out from Chicago to Seattle in the afternoon. Doing so could potentially save you 18% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from Chicago to Seattle in January, February 2023

The best prices found for CHI to SEA flights for January, February
Feb 14 - Feb 28
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

8h 48m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

25h 09m
$119

Multiple Airlines

Pick Dates

Deal found 1/28

Feb 28 - Mar 3
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

15h 00m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

13h 23m
$122

Frontier

Pick Dates

Deal found 1/28

Feb 28 - Mar 7
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

15h 00m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

21h 18m
$123

Frontier

Pick Dates

Deal found 1/29

Chicago to Seattle 2023 flight deals

Cheap flights to Seattle from Chicago found for this year
Feb 14 - Feb 28
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

8h 48m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

25h 09m
$119

Multiple Airlines

Pick Dates

Deal found 1/28

Feb 28 - Mar 3
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

15h 00m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

13h 23m
$122

Frontier

Pick Dates

Deal found 1/28

Mar 21 - Mar 22
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

12h 40m
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

7h 21m
$122

Spirit Airlines

Pick Dates

Deal found 1/28

Cheap Frontier flights from Chicago to Seattle

Feb 28 - Mar 3
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

15h 00m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

13h 23m
$122

Frontier

Pick Dates

Deal found 1/28

Feb 28 - Mar 7
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

15h 00m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

21h 18m
$123

Frontier

Pick Dates

Deal found 1/29

Feb 8 - Feb 14
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

25h 03m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

11h 25m
$130

Frontier

Pick Dates

Deal found 1/27

  • One of the most popular airlines traveling from Chicago to Seattle is Frontier. Flights from Frontier traveling this route typically cost $435.70 RT. This price is typically 28% cheaper than other airlines that offer Chicago to Seattle flights. When booking this route, the cheapest RT price found was $119. Chicago O'Hare Intl Airport is the most common Chicago airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from Chicago to Seattle, Frontier flights are 29% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from Chicago to Seattle

Mar 21 - Mar 22
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

12h 40m
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

7h 21m
$122

Spirit Airlines

Pick Dates

Deal found 1/28

Feb 28 - Mar 8
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

13h 52m
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

15h 50m
$125

Spirit Airlines

Pick Dates

Deal found 1/29

Feb 22 - Feb 24
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 43m
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

14h 43m
$134

Spirit Airlines

Pick Dates

Deal found 1/29

  • If you’re traveling from Chicago to Seattle, one of the more common airlines traveling that route is Spirit Airlines. Chicago to Seattle flights are typically 27% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $460.45 RT. The cheapest Spirit Airlines flight found for this route was $125. When traveling from Chicago to Seattle on Spirit Airlines, the most popular airport to depart from is Chicago O'Hare Intl Airport and the most popular airport to arrive at is Seattle/Tacoma Intl Airport. When flying from Chicago to Seattle, Spirit Airlines flights are 27% more popular than any other airline flying that same route.

Non-stop flights to Seattle from Chicago

Save time with Chicago to Seattle direct flight deals
Feb 22 - Feb 28
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 39m
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 54m
$180

Multiple Airlines

Pick Dates

Deal found 1/28

Feb 22 - Feb 23
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 39m
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

4h 02m
$190

Multiple Airlines

Pick Dates

Deal found 1/29

Mar 4 - Mar 8
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 42m
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

4h 05m
$197

Multiple Airlines

Pick Dates

Deal found 1/28

Last minute flights from Chicago to Seattle

Late deals on return flights to Seattle from Chicago, departing today and this week
Feb 8 - Feb 14
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

25h 03m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

11h 25m
$130

Frontier

Pick Dates

Deal found 1/27

Feb 7 - Feb 14
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

8h 29m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

11h 25m
$140

Frontier

Pick Dates

Deal found 1/27

Feb 8 - Feb 13
MDW

Chicago Midway

SEA

Seattle/Tacoma Intl

1 stop

25h 03m
SEA

Seattle/Tacoma Intl

MDW

Chicago Midway

1 stop

23h 02m
$141

Frontier

Pick Dates

Deal found 1/27

One-way flights to Seattle from Chicago

The cheapest one-way flights from Chicago to Seattle
Mar 7
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

31h 09m
$54

Frontier

Pick Dates

Deal found 1/29

Feb 28
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

31h 06m
$55

Frontier

Pick Dates

Deal found 1/27

Feb 14
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 43m
$61

Spirit Airlines

Pick Dates

Deal found 1/27

Reviews of Airlines Servicing Seattle

Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

The outlet at my seat did not work so I was not able to enjoy the in flight entertainment because my phone was dying.

Alaska Airlines
8.0
Very good
1,360 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

The outlet at my seat did not work so I was not able to enjoy the in flight entertainment because my phone was dying.

American Airlines
7.4
Good
1,667 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

The outlet at my seat did not work so I was not able to enjoy the in flight entertainment because my phone was dying.

Spirit Airlines
6.9
Okay
714 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

The outlet at my seat did not work so I was not able to enjoy the in flight entertainment because my phone was dying.

Frontier
6.1
Okay
536 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

The outlet at my seat did not work so I was not able to enjoy the in flight entertainment because my phone was dying.

Related info for your journey

Useful info, stats and facts about Chicago to Seattle flights.

What airport do you fly into for flights to Seattle from Chicago?

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Chicago to Seattle. 10 airlines have flights to Seattle/Tacoma Intl from Chicago on a regular basis. Booking flights from Chicago to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 22 inbound flights from Chicago per day.

Which airlines flying from Chicago to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Chicago to Seattle/Tacoma Intl that may be offering flexible cancellation policies are Alaska Airlines, Delta, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Chicago to Seattle for under $200 on Cheapflights?

Yes, there are multiple flights from Chicago to Seattle for under $200. The cheapest flight booked recently is on Multiple Airlines for just $119, but on average you can expect to pay $131.

Are there nonstop flights from Chicago to Seattle for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Chicago to Seattle under $200. A good price for a nonstop flight from Chicago to Seattle is less than $211.

Are there last-minute flights available from Chicago to Seattle for under $200?

There are currently 20+ open flights from Chicago to Seattle within the next 7 days for less than $200.

What days are nonstop flights available from Chicago to Seattle?

Nonstop flights are available for this route on the following days: Monday, Tuesday, Wednesday, Friday, Saturday.

How many flights depart from Chicago to Seattle on average per day?

On average, you can expect to see 8 flights from Chicago to Seattle a day.
Morning (6am - Noon) - 38% of flight departures
Afternoon (Noon - 6pm) - 13% of flight departures
Evening (6pm - Midnight) - 50% of flight departures

How long is the flight from Chicago to Seattle?

For as low as $122, Frontier can have you in Seattle from Chicago in 12h 40m. The distance from Chicago to Seattle is about 1725 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Chicago to Seattle round-trip?

Our cheapest airline available from Chicago to Seattle is Frontier. Our recent data shows that you can find tickets from as low as $122 on this airline. An additional option worth looking into is Spirit Airlines, starting at $122. Frontier is priced at 64% lower than the current average price of a flight leaving 3 months from now.

What are the most popular airlines that fly from Chicago to Seattle?

Before booking your flight from Chicago to Seattle check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

What are the most reliable airlines from Chicago to Seattle?

No one likes to see their flight delayed. When booking a flight from Chicago to Seattle consider choosing LOT (100%), United Airlines (80%) or American Airlines (78%) as they are the most reliable in getting you off to your destination on time.

What are the cheapest flights from Chicago to Seattle?

Looking at all options, your cheapest flight can be booked for $100. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for $125 on average our data indicates $746 when flying from Chicago to Seattle.

Alternative routes for Chicago to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Chicago to Seattle

The chart below displays the airlines Cheapflights users traveling from Chicago to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$14Average$21FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Alaska AirlinesCheapest$119Average$436FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
DeltaCheapest$125Average$460FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$129Average$338FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
United AirlinesCheapest$149Average$388FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
FrontierCheapest$178Average$400FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Spirit AirlinesCheapest$190Average$414FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights

Hourly flight availability from Chicago to Seattle

See what time of day planes typically take off from Chicago to Seattle
14%of flight departuresEarly morningMidnight to 6 am
23%of flight departuresMorning6 am to noon
44%of flight departuresAfternoonNoon to 6 pm
19%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Chicago to Seattle

See how many times per day planes take to the skies headed from Chicago to Seattle
Sunday24daily flights
Monday20daily flights
Tuesday22daily flights
Wednesday24daily flights
Thursday23daily flights
Friday23daily flights
Saturday19daily flights
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.