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Cheap flights from Chicago to Seattle from £82

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SEA
24 Dec — 31 Dec1
1 adult

Cheap flight deals from Chicago to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Seattle (SEA). 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 19 December 2024.

Round-trip from

£141

One-way from

£82

Popular in

July

Cheapest in

February

Average price

£278
Delta
  • Delta
  • 23/1-27/1
  • Nonstop
  • 8h 50m total
  • Chicago to Seattle
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Alaska Airlines
  • Alaska Airlines
  • 14/1
  • Nonstop
  • 4h 51m total
  • Chicago to Seattle
Search Deals
High demand for flights, 20% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Chicago to Seattle

Cheapest flights from Chicago to Seattle
Explore the most affordable flight options available from Chicago to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 December 2024.

Wed 25/1207:30ORD - SEA
1 stop7h 14mDelta
Wed 1/117:55SEA - ORD
Nonstop4h 04mDelta
Deal found 18/12£263
Wed 25/1219:07ORD - SEA
Nonstop4h 53mAlaska Airlines
Thu 2/122:36SEA - ORD
Nonstop4h 04mAlaska Airlines
Deal found 17/12£302
Tue 24/1212:15ORD - SEA
2 stops12h 45mSouthwest
Wed 8/110:10SEA - ORD
2 stops10h 25mSouthwest
Deal found 17/12£352
Tue 24/1210:00ORD - SEA
1 stop9h 29mSun Country Air
Mon 30/1223:59SEA - ORD
1 stop15h 39mSun Country Air
Deal found 18/12£355
Thu 26/1206:15ORD - SEA
1 stop8h 26mUnited Airlines
Fri 3/123:51SEA - ORD
Nonstop4h 00mUnited Airlines
Deal found 18/12£433

Find flights from Chicago to Seattle within your budget

Customise your flight search to find flights from Chicago to Seattle 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 858,174 searches. Data last updated 19 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 23/1

14:25-17:10

Nonstop4h 45m

Seattle/Tacoma Intl

Mon 27/1

07:25-13:30

Nonstop4h 05m

£141

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 9/1

17:28-20:11

Nonstop4h 43m

Seattle/Tacoma Intl

Mon 13/1

09:47-19:25

1 stop7h 38m

£143

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 31/1

15:35-22:00

1 stop8h 25m

Seattle/Tacoma Intl

Tue 4/2

18:00-23:59

Nonstop3h 59m

£144

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 16/1

07:15-14:00

1 stop8h 45m

Seattle/Tacoma Intl

Thu 23/1

23:59-06:00

Nonstop4h 01m

£158

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 27/1

22:47-17:00

2 stops20h 13m

Seattle/Tacoma Intl

Thu 30/1

07:10-21:52

1 stop12h 42m

£185

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 20/2

05:45-15:10

2 stops11h 25m

Seattle/Tacoma Intl

Wed 26/2

13:40-23:05

1 stop7h 25m

£203

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 27/1

09:55-12:42

Nonstop4h 47m

Seattle/Tacoma Intl

Wed 29/1

00:45-11:12

1 stop8h 27m

£274

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 24/4

19:13-16:52

1 stop23h 39m

Seattle/Tacoma Intl

Sun 27/4

18:20-17:39

1 stop21h 19m

£292

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 14/1

18:55-21:46

Nonstop4h 51m

£82

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 7/1

07:15-10:11

Nonstop4h 56m

£85

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Showing 1-10 of 15 results
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Best time to book a flight from Chicago to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Chicago with our price prediction graph.
Estimated return 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 Chicago to Seattle

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

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

Use this chart to determine the optimal time to book a return flight from Chicago to Seattle. Price data was last updated on 13 December 2024.

Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago to Seattle?

Currently, January is the cheapest month in which you can book a flight from Chicago to Seattle (average of £622). Flying from Chicago to Seattle in July is currently the most expensive (average of £845). 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 CHI to SEA?

Find hourly flight availability from Chicago to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 December 2024.

When flying from Chicago to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 3% versus a flight in the morning.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 19 December 2024.
Peruse reviews from past customers who have flown with Delta, Alaska Airlines and United Airlines from Chicago to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,836 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very Good
4,836 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very Good
9,552 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very Good
8,604 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,279 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,048 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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. 0 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 7 inbound flights from Chicago per day.

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

    According to our current data, Delta (£141), Alaska Airlines (£144), and United Airlines (£158) offers the cheapest pricing from Chicago to Seattle. Delta is currently priced 35% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Chicago to Seattle one-way?

    £82 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from £85 and £89, respectively.

  • What are the most reliable airlines from Chicago to Seattle?

    The top 3 most reliable airlines when flying from Chicago to Seattle are Air France (96%), Brussels Airlines (96%) and Korean Air (93%).

  • Can I find deals for flights from Chicago to Seattle that include hotel bookings?

    Yes. In addition to deals on Chicago to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Seattle?

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

  • Can I find deals for business class flights from Chicago to Seattle?

    Yes. Cheapflights offers flight deals from Chicago to Seattle 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 Chicago to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Seattle (average of £622). Flying from Chicago to Seattle in July is currently the most expensive (average of £845). 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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Alternative routes for Chicago to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Seattle flights

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