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Cheap flights from Chicago O'Hare Intl Airport to Seattle from £74

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 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
23 7月 — 30 7月1
1 adult

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in September or February, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from O'Hare Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 18 7月 2025.

Round-trip from

£127

One-way from

£74

Popular in

December

Cheapest in

September

Average price

£245
Hawaiian Airlines
  • Hawaiian Airlines
  • 30/8-6/9
  • Nonstop
  • 8h 40m total
  • Chicago to Seattle
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Hawaiian Airlines
  • Hawaiian Airlines
  • 30/8
  • 1 total stop
  • 6h 38m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from O'Hare Intl to Seattle

Cheapest flights from O'Hare Intl to Seattle
Explore the most affordable flight options available from O'Hare Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 7月 2025.

週六 30/817:45ORD - SEA
Nonstop4h 32mHawaiian Airlines
週六 6/915:59SEA - ORD
Nonstop4h 08mHawaiian Airlines
Deal found 15/7£127
週二 28/1008:00ORD - SEA
Nonstop4h 44mAlaska Airlines
週二 28/1014:03SEA - ORD
1 stop7h 56mAlaska Airlines
Deal found 18/7£128
週六 30/818:13ORD - SEA
Nonstop4h 37mDelta
週六 6/917:50SEA - ORD
Nonstop4h 01mDelta
Deal found 16/7£137
週六 18/1013:08ORD - SEA
Nonstop4h 37mUnited Airlines
週二 21/1013:00SEA - ORD
1 stop8h 12mUnited Airlines
Deal found 16/7£145
週六 23/816:20ORD - SEA
1 stop8h 10mSouthwest
週六 30/808:10SEA - ORD
1 stop7h 45mSouthwest
Deal found 16/7£151

Cheapflights Fare Finder

Customise your flight search to find flights from O'Hare Intl 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 18 7月 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Seattle that are best for you.

Fly from

O'Hare Intl

Fly to

Seattle

Route

Depart

Return

Price

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週六 30/8

17:45-20:17

Nonstop4h 32m

Seattle/Tacoma Intl

週六 6/9

15:59-22:07

Nonstop4h 08m

£127

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週二 28/10

08:00-10:44

Nonstop4h 44m

Seattle/Tacoma Intl

週二 28/10

14:03-23:59

1 stop7h 56m

£128

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週六 30/8

18:13-20:50

Nonstop4h 37m

Seattle/Tacoma Intl

週三 3/9

17:50-23:51

Nonstop4h 01m

£137

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週六 18/10

13:08-15:45

Nonstop4h 37m

Seattle/Tacoma Intl

週二 21/10

13:00-23:12

1 stop8h 12m

£145

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週六 23/8

15:10-21:30

1 stop8h 20m

Seattle/Tacoma Intl

週六 30/8

08:10-17:55

1 stop7h 45m

£151

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週六 30/8

14:07-18:45

1 stop6h 38m

£74

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週二 30/9

14:35-23:15

1 stop10h 40m

£75

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週三 15/10

08:20-15:08

1 stop8h 48m

£78

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週三 15/10

06:15-16:05

2 stops11h 50m

£82

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

週六 16/8

18:13-20:50

Nonstop4h 37m

£87

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Showing 1-10 of 11 results
1
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Best time to book a flight from O'Hare Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from O'Hare Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Seattle

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Seattle?

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to Seattle. Price data was last updated on 11 July 2025.

The best time to book flights from Chicago O'Hare Intl Airport to Seattle is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of £622). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of £946). 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 ORD to SEA?

Find hourly flight availability from O'Hare Intl 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 18 7月 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight at midday.

Weekly flight availability from Chicago O'Hare Intl Airport to Seattle

Explore weekly flight availability from O'Hare Intl to Seattle. 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 18 7月 2025.

The most flights from ORD to SEA are scheduled on a Thursday (72 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 on average).

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 18 7月 2025.
See what other customers who have flown with Alaska Airlines, Southwest, andDelta from Chicago O'Hare Intl Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very Good
4,239 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very Good
7,958 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,583 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,865 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl 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 O'Hare Intl?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Chicago O'Hare Intl; the airport handles an average of 55 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Seattle airport from Chicago O'Hare Intl. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Seattle round-trip?

    According to our current data, Hawaiian Airlines (£127), Alaska Airlines (£128), and Delta (£137) offers the cheapest pricing from Chicago O'Hare Intl Airport to Seattle. Hawaiian Airlines is priced at 39% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Seattle one-way?

    To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at £74. United Airlines flights start at £75 while deals on Alaska Airlines start at £81 one-way.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Seattle?

    Before booking your flight to Seattle from Chicago O'Hare Intl Airport, check out the most reliable airlines to get you to your destination on time: KLM (100%), Air France (86%), Delta( 85%).

  • Can I find deals for flights from O'Hare Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Seattle?

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

  • Can I find deals for business class flights from O'Hare Intl to Seattle?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 O'Hare Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of £622). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

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Can Cheapflights notify me if prices for flights from O'Hare Intl to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from O'Hare Intl today and book when prices fit your budget.

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