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O'Hare International Airport to Seattle-Tacoma International Airport flight

Explore the cheapest one-way and round-trip flights from O'Hare International Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from HK$704 and round-trip from HK$1,412. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        ORD 7:00 AM
        4h 42m
        Nonstop
        SEA 9:42 AM
        Chicago - Seattle | Tue, Nov 10 | Alaska Airlines
        SEA 10:33 AM
        4h 17m
        Nonstop
        ORD 4:50 PM
        Seattle - Chicago | Tue, Nov 17 | Alaska Airlines
        HK$1,412 HK$3,443
        59% off
        59% off
        HK$3,443 HK$1,412
      • ORD 5:46 PM
        4h 42m
        Nonstop
        SEA 8:28 PM
        Chicago - Seattle | Fri, Nov 6 | Alaska Airlines
        SEA 10:33 AM
        4h 17m
        Nonstop
        ORD 4:50 PM
        Seattle - Chicago | Tue, Nov 10 | Alaska Airlines
        HK$1,427 HK$3,443
        59% off
        59% off
        HK$3,443 HK$1,427
      • ORD 3:49 PM
        4h 39m
        Nonstop
        SEA 6:28 PM
        Chicago - Seattle | Fri, Nov 13 | Alaska Airlines
        SEA 8:32 AM
        4h 21m
        Nonstop
        ORD 2:53 PM
        Seattle - Chicago | Fri, Nov 20 | Alaska Airlines
        HK$1,467 HK$3,443
        56% off
        56% off
        HK$3,443 HK$1,467
      • ORD 6:35 AM
        4h 45m
        Nonstop
        SEA 9:20 AM
        Chicago - Seattle | Wed, Nov 4 | Delta Air Lines
        SEA 5:30 PM
        4h 4m
        Nonstop
        ORD 11:34 PM
        Seattle - Chicago | Fri, Nov 6 | Delta Air Lines
        HK$1,503
        56% off
        HK$3,443 HK$1,503
      • ORD 9:55 PM
        4h 41m
        Nonstop
        SEA 12:36 AM
        Chicago - Seattle | Tue, Nov 10 | American Airlines
        SEA 6:12 AM
        4h 14m
        Nonstop
        ORD 12:26 PM
        Seattle - Chicago | Tue, Nov 17 | American Airlines
        HK$1,505
        56% off
        HK$3,443 HK$1,505
      • ORD 9:00 AM
        4h 44m
        Nonstop
        SEA 11:44 AM
        Chicago - Seattle | Thu, Nov 5 | Alaska Airlines
        SEA 11:56 AM
        4h 24m
        Nonstop
        ORD 6:20 PM
        Seattle - Chicago | Mon, Nov 9 | Alaska Airlines
        HK$2,410
        30% off
        HK$3,443 HK$2,410
      • ORD 1:21 PM
        22h 21m
        1 stop
        SEA 9:42 AM
        Chicago - Seattle | Wed, Oct 14 | Frontier Airlines
        SEA 7:45 PM
        7h 53m
        1 stop
        ORD 5:38 AM
        Seattle - Chicago | Mon, Oct 19 | Frontier Airlines
        HK$1,415
        59% off
        HK$3,443 HK$1,415
      • ORD 6:30 AM
        10h 42m
        1 stop
        SEA 3:12 PM
        Chicago - Seattle | Sat, Nov 21 | Frontier Airlines
        SEA 4:27 PM
        5h 54m
        1 stop
        ORD 12:21 AM
        Seattle - Chicago | Sat, Nov 28 | Frontier Airlines
        HK$1,428
        59% off
        HK$3,443 HK$1,428
      • ORD 6:30 AM
        10h 38m
        1 stop
        SEA 3:08 PM
        Chicago - Seattle | Sat, Oct 24 | Frontier Airlines
        SEA 8:00 PM
        8h 34m
        1 stop
        ORD 6:34 AM
        Seattle - Chicago | Sat, Oct 31 | Frontier Airlines
        HK$1,498
        56% off
        HK$3,443 HK$1,498
      • ORD 6:30 AM
        10h 42m
        1 stop
        SEA 3:12 PM
        Chicago - Seattle | Tue, Nov 10 | Frontier Airlines
        SEA 8:00 PM
        8h 34m
        1 stop
        ORD 6:34 AM
        Seattle - Chicago | Fri, Nov 13 | Frontier Airlines
        HK$1,499
        56% off
        HK$3,443 HK$1,499
      • ORD 6:30 AM
        10h 38m
        1 stop
        SEA 3:08 PM
        Chicago - Seattle | Tue, Oct 27 | Frontier Airlines
        SEA 8:00 PM
        8h 34m
        1 stop
        ORD 6:34 AM
        Seattle - Chicago | Tue, Nov 3 | Frontier Airlines
        HK$1,500
        56% off
        HK$3,443 HK$1,500
      • ORD 6:30 AM
        10h 38m
        1 stop
        SEA 3:08 PM
        Chicago - Seattle | Sat, Oct 10 | Frontier Airlines
        SEA 9:45 PM
        29h 53m
        1 stop
        ORD 5:38 AM
        Seattle - Chicago | Wed, Oct 14 | Frontier Airlines
        HK$1,501
        56% off
        HK$3,443 HK$1,501
      • CHI 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Chicago - Seattle | Mon, Oct 5 | Normal Airline
        SEA 3:00 PM
        6h
        Nonstop
        CHI 4:00 PM
        Seattle - Chicago | Wed, Oct 7 | Normal Airline
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        Find more flights
      • Cheapest nonstop
        ORD 6:00 AM
        4h 37m
        Nonstop
        SEA 8:37 AM
        Chicago - Seattle | Sun, Oct 25 | Alaska Airlines
        HK$704 HK$1,415
        50% off
        50% off
        HK$1,415 HK$704
      • ORD 7:00 AM
        4h 35m
        Nonstop
        SEA 9:35 AM
        Chicago - Seattle | Sun, Oct 25 | Delta Air Lines
        HK$714 HK$1,415
        50% off
        50% off
        HK$1,415 HK$714
      • ORD 9:24 PM
        4h 47m
        Nonstop
        SEA 12:11 AM
        Chicago - Seattle | Sun, Oct 25 | American Airlines
        HK$749 HK$1,415
        47% off
        47% off
        HK$1,415 HK$749
      • ORD 6:35 AM
        4h 45m
        Nonstop
        SEA 9:20 AM
        Chicago - Seattle | Sun, Nov 8 | Delta Air Lines
        HK$774
        45% off
        HK$1,415 HK$774
      • ORD 6:00 AM
        4h 30m
        Nonstop
        SEA 8:30 AM
        Chicago - Seattle | Thu, Oct 8 | Alaska Airlines
        HK$932
        34% off
        HK$1,415 HK$932
      • ORD 7:00 AM
        4h 35m
        Nonstop
        SEA 9:35 AM
        Chicago - Seattle | Thu, Oct 8 | Delta Air Lines
        HK$988
        30% off
        HK$1,415 HK$988
      • ORD 6:30 AM
        10h 42m
        1 stop
        SEA 3:12 PM
        Chicago - Seattle | Wed, Nov 25 | Frontier Airlines
        HK$721
        49% off
        HK$1,415 HK$721
      • ORD 6:30 AM
        10h 42m
        1 stop
        SEA 3:12 PM
        Chicago - Seattle | Sat, Nov 21 | Frontier Airlines
        HK$727
        49% off
        HK$1,415 HK$727
      • ORD 6:30 AM
        10h 42m
        1 stop
        SEA 3:12 PM
        Chicago - Seattle | Mon, Nov 23 | Frontier Airlines
        HK$883
        38% off
        HK$1,415 HK$883
      • ORD 5:15 PM
        18h 30m
        1 stop
        SEA 9:45 AM
        Chicago - Seattle | Thu, Nov 26 | Frontier Airlines
        HK$964
        32% off
        HK$1,415 HK$964
      • ORD 11:06 AM
        24h 45m
        1 stop
        SEA 9:51 AM
        Chicago - Seattle | Sat, Nov 28 | Frontier Airlines
        HK$988
        30% off
        HK$1,415 HK$988
      • ORD 6:30 AM
        10h 38m
        1 stop
        SEA 3:08 PM
        Chicago - Seattle | Wed, Oct 21 | Frontier Airlines
        HK$990
        30% off
        HK$1,415 HK$990
      • CHI 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Chicago - Seattle | Mon, Oct 5 | Normal Airline
        Find more flights
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Flight fares from O'Hare International Airport to Seattle-Tacoma International Airport are based on average airline prices for the next 3 months, according to Trip.com’s latest data.

Trip.com Price Insights: Flights from O'Hare International Airport to Seattle-Tacoma International Airport

Which month has the lowest one-way flight price from O'Hare International Airport to Seattle-Tacoma International Airport?

The data is based on the average one-way flight prices on Trip.com for flights from O'Hare International Airport to Seattle-Tacoma International Airport across different months over the past 12 months.

Based on Trip.com data from the past 12 months, if you’re looking for low one-way flight fares from O'Hare International Airport to Seattle-Tacoma International Airport, the best time to book is in September, with an average price of HK$1,253. Try to avoid January, when prices are highest, averaging around HK$1,852.

HK$1,852
HK$1,553
HK$1,253
HK$954
  • HK$1,253
    Sep
  • HK$1,307
    Oct
  • HK$1,503
    Nov
  • HK$1,786
    Dec
  • HK$1,852
    Jan
  • HK$1,392
    Feb
  • HK$1,481
    Mar
  • HK$1,621
    Apr
  • HK$1,704
    May
  • HK$1,624
    Jun
  • HK$1,702
    Jul
  • HK$1,784
    Aug

What is the cheapest day of the week to fly from O'Hare International Airport to Seattle-Tacoma International Airport?

The data is based on the average flight prices on Trip.com from O'Hare International Airport to Seattle-Tacoma International Airport across different days of the week over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to depart from O'Hare International Airport to Seattle-Tacoma International Airport is usually Friday, with average fares typically lower than other days. Try to avoid departing on Sunday, as prices are usually the highest on that day.

HK$1,910
HK$1,711
HK$1,511
HK$1,312
    Cheapest
  • HK$1,837
    Mon
  • HK$1,564
    Tue
  • HK$1,567
    Wed
  • HK$1,587
    Thu
  • HK$1,511
    Fri
  • HK$1,537
    Sat
  • HK$1,910
    Sun

Which airline offers the cheapest flights from O'Hare International Airport to Seattle-Tacoma International Airport?

The cheapest airline flying from O'Hare International Airport to Seattle-Tacoma International Airport is Alaska Airlines (from HK$704) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Alaska Airlines
From HK$704
Delta Air Lines
From HK$714
Frontier Airlines
From HK$721
American Airlines
From HK$749
United Airlines
From HK$1,126
Hahn Air
From HK$1,436
Sun Country Airlines
From HK$1,549

Find more flights and airlines

What is the flight schedule from O'Hare International Airport to Seattle-Tacoma International Airport?

Check the schedule for flights from Chicago to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL1564

    O'Hare International Airport

    12:40 PM

    ORD

    4h 39m

    3:19 PM

    SEA

    S M T W T F S
    Search

  2. AS579

    O'Hare International Airport

    7:16 PM

    ORD

    4h 43m

    9:59 PM

    SEA

    S - - W T - S
    Search

  3. AS583

    O'Hare International Airport

    9:00 AM

    ORD

    4h 44m

    11:44 AM

    SEA

    S M T W T F S
    Search

  4. DL2041

    O'Hare International Airport

    7:20 AM

    ORD

    4h 45m

    10:05 AM

    SEA

    S M T W T F S
    Search

  5. DL1818

    O'Hare International Airport

    5:30 PM

    ORD

    4h 46m

    8:16 PM

    SEA

    - M T W T F -
    Search

  6. AA2392

    O'Hare International Airport

    9:52 PM

    ORD

    4h 51m

    12:43 AM

    SEA

    S M T W T F S
    Search

  7. DL1940

    O'Hare International Airport

    2:04 PM

    ORD

    3h 46m

    Nonstop

    4:50 PM

    SLC

    - M T W T F -
    Search

  8. DL871

    Salt Lake City International Airport

    5:10 PM

    SLC

    2h 20m

    Nonstop

    6:30 PM

    SEA

    S M T W T F S

  9. F92145

    O'Hare International Airport

    5:15 AM

    ORD

    4h 12m

    Nonstop

    7:27 AM

    LAS

    S - - - - - S
    Search

  10. F94203

    Harry Reid International Airport

    9:39 AM

    LAS

    2h 58m

    Nonstop

    12:37 PM

    SEA

    S - - - - - -

  11. F91483

    O'Hare International Airport

    7:25 AM

    ORD

    3h 9m

    Nonstop

    9:34 AM

    DEN

    S M T W T F S
    Search

  12. F91175

    Denver International Airport

    1:07 PM

    DEN

    3h 5m

    Nonstop

    3:12 PM

    SEA

    S M T W T F S

  13. F92145

    O'Hare International Airport

    5:15 AM

    ORD

    4h 12m

    Nonstop

    7:27 AM

    LAS

    S - - - - - S
    Search

  14. F92407

    Harry Reid International Airport

    8:05 AM

    LAS

    2h 54m

    Nonstop

    10:59 AM

    SEA

    S M T W T - S
Find more flights and airlines

About O'Hare International Airport and Seattle-Tacoma International Airport

Learn about O'Hare International Airport (ORD) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 2,764.37 km
Cheapest one-way ticket price HK$704
Cheapest return ticket price HK$1,412

FAQs for O'Hare International Airport to Seattle-Tacoma International Airport Flights

  • How long is the flight from O'Hare International Airport to Seattle-Tacoma International Airport?

    O'Hare International Airport to Seattle-Tacoma International Airport takes about 4 hours 20 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 17 daily flights from O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA).
  • The earliest flight from O'Hare International Airport to Seattle-Tacoma International Airport departs at 06:00, and the last departs at 21:24, with about 24 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around HK$2,139 in October, the most expensive month to book this route.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
  • American Airlines is a very popular airline operating an average of 4546 flights per month.
  • One-way flights from O'Hare International Airport to Seattle-Tacoma International Airport currently start from HK$704, and round-trip fares start from HK$1,412. The current lowest fare is a Alaska Airlines flight departing on Sun, Oct 25; prices may vary depending on availability.
  • Yes. United Airlines, Alaska Airlines, American Airlines and Delta Air Lines operate direct flights from O'Hare International Airport to Seattle-Tacoma International Airport, with an average flight time of 5 hours 14 minutes, and around 152 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from O'Hare International Airport to Seattle-Tacoma International Airport is HK$1,645. Prices may vary depending on the departure date, airline, and availability.
  • O'Hare International Airport to Seattle-Tacoma International Airport operates around 154 weekly flights, mainly by United Airlines, American Airlines and Alaska Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter O'Hare International Airport and Seattle-Tacoma International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before payment. Charges for checked baggage, onboard meals, Wi-Fi, and other optional services may also appear in the flight cards where applicable.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and for many routes the data may refresh in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.