How can I find cheap flights from Chicago Rockford International Airport to Seattle-Tacoma International Airport?
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 SGD 275 and round-trip from SGD 511. Based on Trip.com's latest 7-day flight data.
- Return
- Cheapest
- Fastest
RFD 12:3726h1 stopSEA 12:37Chicago - Seattle | Thu, Nov 19 | Allegiant Air
SEA 17:244h 21mDirectORD 23:45Seattle - Chicago | Fri, Nov 27 | American AirlinesSGD 511 SGD 58813% off13% offSGD 588 SGD 511
CHI 13:0017h 25m1 stopSEA 14:00Chicago - Seattle | Fri, Nov 6 | Normal Airline
SEA 15:006hDirectCHI 16:00Seattle - Chicago | Sun, Nov 8 | Normal AirlineFind more flightsFind more flights
- Cheapest
RFD 12:228h 53m1 stopSEA 19:15Chicago - Seattle | Mon, Dec 7 | Allegiant AirSGD 275 SGD 31713% off13% offSGD 317 SGD 275
CHI 13:0017h 25m1 stopSEA 14:00Chicago - Seattle | Fri, Nov 6 | Normal AirlineFind more flightsFind more flights
RFD 12:228h 53m1 stopSEA 19:15Chicago - Seattle | Mon, Dec 7 | Allegiant AirSGD 275 SGD 31713% off13% offSGD 317 SGD 275
CHI 13:0017h 25m1 stopSEA 14:00Chicago - Seattle | Fri, Nov 6 | Normal AirlineFind more flightsFind 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 SGD 275) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.

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About Chicago Rockford International Airport and Seattle-Tacoma International Airport
Learn about Chicago Rockford International Airport (RFD) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.
| Flight distance | 2,650.29km |
|---|---|
| Cheapest one-way ticket price | SGD 275 |
| Cheapest return ticket price | SGD 511 |
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 17km, by taxi about 30 minutes.
What are the cheapest flights from Chicago Rockford International Airport to Seattle-Tacoma International Airport?
One-way flights from Chicago Rockford International Airport to Seattle-Tacoma International Airport currently start from SGD 275, and round-trip fares start from SGD 511. The current lowest fare is a Allegiant Air flight departing on Mon, Dec 7; prices may vary depending on availability.What is the average price of a flight from Chicago Rockford International Airport to Seattle-Tacoma International Airport?
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 SGD 345. Prices may vary depending on the departure date, airline, and availability.How do I book flights from Chicago Rockford International Airport to Seattle-Tacoma International Airport on Trip.com?
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 estimated lowest price and include all taxes and fees found in the last 24 hours.