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Chicago Rockford International Airport to Seattle-Tacoma International Airport flight
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Chicago Rockford International Airport to Seattle-Tacoma International Airport Flights Info

Cheapest one-way
£135
Allegiant Air Allegiant Air 25h 29m · 1 stop Tue, Dec 15
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Cheapest round-trip
£303
Allegiant Air Allegiant Air 26h · 1 stop Thu, Nov 19 - Fri, Nov 27
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Recommended airlines
Allegiant Air Allegiant AirCheapest· From £135 American Airlines American AirlinesMost booked

Explore the cheapest one-way and round-trip flights from Chicago Rockford International Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from £135 and round-trip from £303. Based on Trip.com's latest 7-day flight data.

    • Cheapest
      RFD 12:47 PM
      25h 29m
      1 stop
      SEA 12:16 PM
      Chicago - Seattle | Tue, Dec 15 | Allegiant Air
      £135 £199
      32% off
      32% off
      £199 £135
    • RFD 12:47 PM
      22h 6m
      1 stop
      SEA 8:53 AM
      Chicago - Seattle | Tue, Dec 8 | Allegiant Air
      £173 £199
      13% off
      13% off
      £199 £173
    • CHI 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Chicago - Seattle | Mon, Nov 16 | Normal Airline
      Find more flights
      Find more flights
    • RFD 12:37 PM
      26h
      1 stop
      SEA 12:37 PM
      Chicago - Seattle | Thu, Nov 19 | Allegiant Air
      SEA 5:24 PM
      4h 21m
      Nonstop
      ORD 11:45 PM
      Seattle - Chicago | Fri, Nov 27 | American Airlines
      £303 £349
      13% off
      13% off
      £349 £303
    • CHI 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Chicago - Seattle | Mon, Nov 16 | Normal Airline
      SEA 3:00 PM
      6h
      Nonstop
      CHI 4:00 PM
      Seattle - Chicago | Wed, Nov 18 | Normal Airline
      Find more flights
      Find more flights
    • RFD 12:47 PM
      22h 6m
      1 stop
      SEA 8:53 AM
      Chicago - Seattle | Tue, Dec 8 | Allegiant Air
      £173 £199
      13% off
      13% off
      £199 £173
    • RFD 12:47 PM
      25h 29m
      1 stop
      SEA 12:16 PM
      Chicago - Seattle | Tue, Dec 15 | Allegiant Air
      £135 £199
      32% off
      32% off
      £199 £135
    • CHI 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Chicago - Seattle | Mon, Nov 16 | Normal Airline
      Find more flights
      Find more flights

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.

Which airline offers the cheapest flights from Chicago Rockford International Airport to Seattle-Tacoma International Airport?

The cheapest airline flying from Chicago Rockford International Airport to Seattle-Tacoma International Airport is Allegiant Air (from £135) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.
Cebu Pacific logo Cebu Pacific Philippine Airlines logo Philippine Airlines Philippines AirAsia logo Philippines AirAsia Cebgo logo Cebgo Sunlight Air logo Sunlight Air
American Airlines logo American Airlines

FAQs for Chicago Rockford International Airport to Seattle-Tacoma International Airport Flights

  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
  • One-way flights from Chicago Rockford International Airport to Seattle-Tacoma International Airport currently start from £135, and round-trip fares start from £303. The current lowest fare is a Allegiant Air flight departing on Tue, Dec 15; prices may vary depending on availability.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Chicago Rockford International Airport to Seattle-Tacoma International Airport is £260. Prices may vary depending on the departure date, airline, and availability.
  • Enter Chicago Rockford 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.