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Flights from Chicago to Seattle

Cheapest airlines flights from Chicago to Seattle

You can choose from 5 airlines that fly from Chicago to Seattle, including Alaska Airlines, Delta Air Lines, and Hawaiian Airlines. American Airlines has lowest fares on this route.
Alaska Airlines logo Alaska Airlines
Delta Air Lines logo Delta Air Lines
Hawaiian Airlines logo Hawaiian Airlines
American Airlines logo American Airlines
United Airlines logo United Airlines
Airlines are determined based on actual purchased flight tickets from Chicago to Seattle according to previous 12 months data from Trip.com.

Search for direct flights from Chicago to Seattle in the next 3 months. Based on Trip.com's latest 7-day flight data, one-way direct flights start at US$81, and round-trip direct flights start at US$98.

      • Cheapest nonstop
        ORD 20:20
        4h 44m
        Nonstop
        SEA 23:04
        Chicago - Seattle | Sat, Mar 14 | American Airlines
        SEA 13:37
        4h 20m
        Nonstop
        ORD 19:57
        Seattle - Chicago | Thu, Mar 19 | American Airlines
        US$98 US$208
        53% off
        53% off
        US$208 US$98
      • ORD 20:20
        4h 44m
        Nonstop
        SEA 23:04
        Chicago - Seattle | Tue, Mar 24 | American Airlines
        SEA 00:07
        4h 16m
        Nonstop
        ORD 06:23
        Seattle - Chicago | Wed, Apr 1 | American Airlines
        US$99 US$208
        52% off
        52% off
        US$208 US$99
      • ORD 07:30
        4h 44m
        Nonstop
        SEA 10:14
        Chicago - Seattle | Thu, Apr 30 | American Airlines
        SEA 07:00
        4h 17m
        Nonstop
        ORD 13:17
        Seattle - Chicago | Mon, May 4 | American Airlines
        US$115 US$208
        45% off
        45% off
        US$208 US$115
      • ORD 21:40
        4h 44m
        Nonstop
        SEA 00:24
        Chicago - Seattle | Sat, Apr 4 | American Airlines
        SEA 23:28
        4h 6m
        Nonstop
        ORD 05:34
        Seattle - Chicago | Sat, Apr 11 | American Airlines
        US$119
        43% off
        US$208 US$119
      • ORD 07:30
        4h 44m
        Nonstop
        SEA 10:14
        Chicago - Seattle | Fri, May 1 | American Airlines
        SEA 07:00
        4h 17m
        Nonstop
        ORD 13:17
        Seattle - Chicago | Wed, May 6 | American Airlines
        US$121
        42% off
        US$208 US$121
      • ORD 07:30
        4h 44m
        Nonstop
        SEA 10:14
        Chicago - Seattle | Mon, Apr 27 | American Airlines
        SEA 11:16
        4h 30m
        Nonstop
        ORD 17:46
        Seattle - Chicago | Sat, May 2 | American Airlines
        US$121
        42% off
        US$208 US$121
      • ORD 07:30
        4h 44m
        Nonstop
        SEA 10:14
        Chicago - Seattle | Fri, Apr 24 | American Airlines
        SEA 07:00
        4h 17m
        Nonstop
        ORD 13:17
        Seattle - Chicago | Sun, Apr 26 | American Airlines
        US$122
        41% off
        US$208 US$122
      • ORD 07:25
        4h 40m
        Nonstop
        SEA 10:05
        Chicago - Seattle | Thu, Apr 9 | Delta Air Lines
        SEA 17:59
        3h 59m
        Nonstop
        ORD 23:58
        Seattle - Chicago | Fri, Apr 17 | Delta Air Lines
        US$187
        10% off
        US$208 US$187
      • ORD 19:05
        6h 58m
        1 stop
        SEA 00:03
        Chicago - Seattle | Sun, Mar 22 | Delta Air Lines
        SEA 17:55
        3h 57m
        Nonstop
        ORD 23:52
        Seattle - Chicago | Mon, Mar 23 | Delta Air Lines
        US$93
        55% off
        US$208 US$93
      • ORD 07:25
        4h 40m
        Nonstop
        SEA 10:05
        Chicago - Seattle | Wed, Mar 18 | Delta Air Lines
        SEA 23:59
        6h 41m
        1 stop
        ORD 08:40
        Seattle - Chicago | Thu, Mar 26 | Delta Air Lines
        US$97
        53% off
        US$208 US$97
      • CHI 13:00
        17h 25m
        1 stop
        SEA Invalid Date
        Chicago - Seattle | Mon, Mar 16 | Normal Airline
        SEA 15:00
        6h
        Nonstop
        CHI 16:00
        Seattle - Chicago | Wed, Mar 18 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        ORD 19:05
        4h 49m
        Nonstop
        SEA 21:54
        Chicago - Seattle | Thu, Mar 19 | American Airlines
        US$81 US$103
        21% off
        21% off
        US$103 US$81
      • ORD 18:50
        4h 44m
        Nonstop
        SEA 21:34
        Chicago - Seattle | Wed, Apr 15 | Hawaiian Airlines
        US$86 US$103
        17% off
        17% off
        US$103 US$86
      • ORD 18:00
        4h 43m
        Nonstop
        SEA 20:43
        Chicago - Seattle | Tue, Apr 21 | Delta Air Lines
        US$86 US$103
        17% off
        17% off
        US$103 US$86
      • ORD 18:50
        4h 44m
        Nonstop
        SEA 21:34
        Chicago - Seattle | Wed, Apr 15 | Alaska Airlines
        US$87
        16% off
        US$103 US$87
      • ORD 08:00
        4h 43m
        Nonstop
        SEA 10:43
        Chicago - Seattle | Wed, Apr 8 | Alaska Airlines
        US$88
        15% off
        US$103 US$88
      • ORD 22:00
        4h 36m
        Nonstop
        SEA 00:36
        Chicago - Seattle | Tue, Apr 21 | American Airlines
        US$88
        15% off
        US$103 US$88
      • ORD 14:20
        4h 37m
        Nonstop
        SEA 16:57
        Chicago - Seattle | Wed, Apr 15 | Delta Air Lines
        US$89
        14% off
        US$103 US$89
      • ORD 14:20
        4h 40m
        Nonstop
        SEA 17:00
        Chicago - Seattle | Wed, Apr 8 | Delta Air Lines
        US$89
        14% off
        US$103 US$89
      • ORD 14:20
        4h 40m
        Nonstop
        SEA 17:00
        Chicago - Seattle | Sat, Apr 4 | Delta Air Lines
        US$90
        13% off
        US$103 US$90
      • ORD 20:25
        4h 40m
        Nonstop
        SEA 23:05
        Chicago - Seattle | Wed, Apr 15 | American Airlines
        US$92
        11% off
        US$103 US$92
      • CHI 13:00
        17h 25m
        1 stop
        SEA Invalid Date
        Chicago - Seattle | Mon, Mar 16 | Normal Airline
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Displayed flight fares from Chicago to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Chicago to Seattle Flight Details

The distance between Chicago and Seattle is about 2,785.86 km. The average flying time from Chicago to Seattle is around 4 hours 43 minutes. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is October.

Cheapest one-way flight priceUS$81
Cheapest return ticket priceUS$93
Cheapest monthOctober
Peak season for travelJuly
Flight distance2,785.86 km
Average flight time4 hours 43 minutes
Popular airlineAlaska Airlines
Flight statistics for the Chicago–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Chicago to Seattle

Which month has the cheapest one-way flights from Chicago to Seattle?

The average price of one-way flights from Chicago to Seattle purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Chicago to Seattle is June, with an average price of US$161; while the month with the highest flight price is usually January, with an average price of up to US$230.

US$230
US$196
US$161
US$127
    Cheapest
  • US$200
    Mar
  • US$181
    Apr
  • US$174
    May
  • US$161
    Jun
  • US$187
    Jul
  • US$207
    Aug
  • US$183
    Sep
  • US$162
    Oct
  • US$187
    Nov
  • US$222
    Dec
  • US$230
    Jan
  • US$173
    Feb

Which month has the cheapest round-trip flights from Chicago to Seattle?

The average price of round-trip flights from Chicago to Seattle purchased by Trip.com users by month over the past 12 months.

Based on data from Trip.com, the lowest prices for round-trip flights from Chicago to Seattle are found during February, with an average price of US$192. Conversely, the highest prices are found during April, with an average price of up to US$374.

US$374
US$283
US$192
US$101
    Cheapest
  • US$315
    Mar
  • US$374
    Apr
  • US$288
    May
  • US$304
    Jun
  • US$316
    Jul
  • US$282
    Aug
  • US$237
    Sep
  • US$252
    Oct
  • US$347
    Nov
  • US$223
    Dec
  • US$344
    Jan
  • US$192
    Feb

What is the cheapest day of the week to fly from Chicago to Seattle?

Average weekly flight prices from Chicago to Seattle by travel date (Based on Trip.com’s past 12 months of data)

Based on Trip.com’s past 12 months of flight data, the cheapest day to fly from Chicago to Seattle is Wednesday, with average prices lower than on other days. Avoid Monday, as prices are usually highest then.

US$219
US$187
US$154
US$122
    Cheapest
  • US$219
    Mon
  • US$161
    Tue
  • US$154
    Wed
  • US$183
    Thu
  • US$185
    Fri
  • US$187
    Sat
  • US$219
    Sun

What is the cheapest day to fly from Chicago to Seattle during Easter Day?

Based on Trip.com's data over the past 3 days, these are the lowest one-way flight prices from Chicago to Seattle during Easter Day.

During the Easter Day period, the cheapest flights from Chicago to Seattle were available on Apr 13 with the lowest price being US$94.

US$194
US$144
US$94
US$44
    Cheapest
  • US$117
    Apr 8
  • US$115
    Apr 9
  • US$160
    Apr 10
  • US$194
    Apr 11
  • US$100
    Apr 12
  • US$94
    Apr 13
  • US$99
    Apr 14

Frequently Asked Questions

  • What are the cheapest flights from Chicago to Seattle (CHI-SEA)?

    Based on Trip.com data, American Airlines offers one-way fares as low as US$81 on Cheapest nonstop routes (e.g. ORD to SEA on Thu, Mar 19), while Delta Air Lines offers Cheapest nonstop round-trips from US$93 departing on Sun, Mar 22 and returning on Mon, Mar 23.
  • At the moment, you can catch a nonstop flight from Chicago to Seattle with the following airlines, including: Alaska Airlines Delta Air Lines Hawaiian Airlines United Airlines American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 4 hours 43 minutes to fly from Chicago to Seattle.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 50 flight per week flying from Chicago to Seattle. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL2041 (08:21) Hawaiian Airlines: S/M/T/W/T/F/S -- HA6299 (07:36)
  • To find best deals on flights from Chicago to Seattle, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Mar 19, with one-way flights priced at just US$81.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is American Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Chicago to Seattle is October, when demand for travel is lower.
  • After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Chicago to Seattle on March 31, 2026 with American Airlines, with prices starting at US$45.
  • You can land at any one of the following hubs in Seattle, with O'Hare International Airport to Seattle-Tacoma International Airport (ORD-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air - Lake Union (LKE) Seattle-Tacoma International Airport (SEA).
  • The time difference between Seattle and Chicago is 2h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Trip.com Airline Insights on Flights from Chicago to Seattle

Which airline offers the cheapest direct flights from Chicago to Seattle?

Data is based on the average price of all nonstop flights from Chicago to Seattle on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, Hawaiian Airlines provides the lowest-priced direct flights from Chicago to Seattle, with fares starting at US$185.

US$148
US$185
US$223
US$260
US$297
Hawaiian Airlines
US$185
Hawaiian Airlines
Delta Air Lines
US$190
Delta Air Lines
Alaska Airlines
US$201
Alaska Airlines
American Airlines
US$241
American Airlines
United Airlines
US$297
United Airlines

Which airline operates the most flights from Chicago to Seattle?

Total flights from Chicago to Seattle across all airlines. (Based on Trip.com data from the past month)

Based on Trip.com’s data from the past month, United Airlines operates the most frequent flights from Chicago to Seattle, with 28 flights per week.

18
21
25
28
United Airlines
28
United Airlines
Alaska Airlines
26
Alaska Airlines
Hawaiian Airlines
25
Hawaiian Airlines
Air Tahiti Nui
25
Air Tahiti Nui
Qatar Airways
22
Qatar Airways
American Airlines
21
American Airlines

How many flights fly from Chicago to Seattle daily?

The data is based on the flight numbers for each day of the week from Chicago to Seattle within the Trip.com database over the past month.

Based on the past month's historical data from Trip.com, the number of flights from Chicago to Seattle is the highest on Friday and the lowest on Tuesday.

218
181
144
107
Highest
167
Mon
144
Tue
156
Wed
169
Thu
218
Fri
178
Sat
168
Sun

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

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

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed 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.